JDBCDataStore (Geotools modules 21.0 API)

Object
- ContentDataStore
- - JDBCDataStore

All Implemented Interfaces:

DataAccess<SimpleFeatureType,SimpleFeature>, DataStore, GmlObjectStore
```
public final class JDBCDataStore
extends ContentDataStore
implements GmlObjectStore
```
Datastore implementation for jdbc based relational databases.
This class is not intended to be subclassed on a per database basis. Instead the notion of a "dialect" is used.

Dialects
A dialect (SQLDialect) encapsulates all the operations that are database specific. Therefore to implement a jdbc based datastore one must extend SQLDialect. The specific dialect to use is set using setSQLDialect(SQLDialect).

Database Connections
Connections to the underlying database are obtained through a DataSource. A datastore must be specified using setDataSource(DataSource).

Schemas
This datastore supports the notion of database schemas, which is more or less just a grouping of tables. When a schema is specified, only those tables which are part of the schema are provided by the datastore. The schema is specified using setDatabaseSchema(String).

Spatial Functions
The set of spatial operations or functions that are supported by the specific database are reported with a FilterCapabilities instance. This is specified using #setFilterCapabilities(FilterCapabilities).

Author:

Justin Deoliveira, The Open Planning Project

Field Summary

Fields
Modifier and Type	Field and Description
`protected HashMap<Class<? extends FeatureVisitor>,String>`	`aggregateFunctions` Feature visitor to aggregate function name
`protected boolean`	`associations` flag controlling if the datastore is supporting feature and geometry relationships with associations
`protected int`	`batchInsertSize` The number of features to bufferize while inserting in order to do batch inserts.
`protected JDBCCallbackFactory`	`callbackFactory`
`protected HashMap<Class<?>,Integer>`	`classToSqlTypeMappings` java class to sql type mappings;
`protected List<ConnectionLifecycleListener>`	`connectionLifecycleListeners` The listeners that are allowed to handle the connection lifecycle
`protected String`	`databaseSchema` The database schema.
`protected DataSource`	`dataSource` data source
`SQLDialect`	`dialect` the dialect of sql
`protected static ReferencedEnvelope`	`EMPTY_ENVELOPE` The envelope returned when bounds is called against a geometryless feature type
`protected boolean`	`exposePrimaryKeyColumns` flag controlling whether primary key columns of a table are exposed via the feature type.
`protected static String`	`FEATURE_ASSOCIATION_TABLE` name of table to use to store feature associations when `associations` is set.
`protected static String`	`FEATURE_RELATIONSHIP_TABLE` name of table to use to store feature relationships (information about associations) when `associations` is set.
`int`	`fetchSize` The fetch size for this datastore, defaulting to 1000.
`protected static String`	`GEOMETRY_ASSOCIATION_TABLE` name of table to use to store geometry associations when `associations` is set.
`protected static String`	`GEOMETRY_TABLE` name of table to use to store geometries when `associations` is set.
`static String`	`JDBC_COLUMN_ALIAS` Used to specify the column alias to use when encoding a column in a select
`static String`	`JDBC_NATIVE_SRID` The native SRID associated to a certain descriptor TODO: qualify this key with 'org.geotools.jdbc'
`static String`	`JDBC_NATIVE_TYPE` The key for attribute descriptor user data which specifies the original database column data type, as a `Types` value.
`static String`	`JDBC_NATIVE_TYPENAME` The key for attribute descriptor user data which specifies the original database column data type.
`static String`	`JDBC_PRIMARY_KEY_COLUMN` Boolean marker stating whether an attribute is part of the primary key
`static String`	`JDBC_READ_ONLY` Boolean marker stating whether the feature type is to be considered read only
`static int`	`MAX_IDS_IN_FILTER` Max number of ids to use for the optimized locks checking filter.
`protected static String`	`MULTI_GEOMETRY_TABLE` name of table to use to store multi geometries made up of non-multi geometries when `associations` is set.
`protected PrimaryKeyFinder`	`primaryKeyFinder` Finds the primary key definitions (instantiated here because the finders might keep state)
`protected HashMap<String,Class<?>>`	`sqlTypeNameToClassMappings` sql type name to java class mappings
`protected HashMap<Integer,Class<?>>`	`sqlTypeToClassMappings` sql type to java class mappings
`protected HashMap<Integer,String>`	`sqlTypeToSqlTypeNameOverrides` sql type to sql type name overrides
`protected HashMap<String,String>`	`supportedFunctions` java supported filter function mappings to dialect name;
`protected static Boolean`	`TRACE_ENABLED` When true, record a stack trace documenting who disposed the JDBCDataStore.
`protected Map<String,VirtualTable>`	`virtualTables` Contains the SQL definition of the various virtual tables

Fields inherited from class ContentDataStore
dataStoreFactory, entries, featureFactory, filterFactory, geometryFactory, JOINED_FEATURE_TYPE, lockingManager, LOGGER, namespaceURI, typeFactory, WRITER_ADD, WRITER_COMMIT, WRITER_UPDATE

Constructor Summary

Constructors
Constructor and Description

JDBCDataStore()

Constructors
Constructor and Description
`JDBCDataStore()`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`void`	`addVirtualTable(VirtualTable vtable)` Deprecated. Use createVirtualTable instead
`void`	`applyLimitOffset(StringBuffer sql, Query query)` Applies the limit/offset elements to the query if they are specified and if the dialect supports them
`Transaction`	`buildTransaction(Connection cx)` Builds a transaction object around a user provided connection.
`void`	`closeSafe(Connection cx)` Utility method for closing a connection.
`void`	`closeSafe(ResultSet rs)` Utility method for closing a result set.
`void`	`closeSafe(Statement st)` Utility method for closing a statement.
`protected String`	`createAssociationTableSQL(Connection cx)` Creates the sql for the association table.
`protected Connection`	`createConnection()` Creates a new connection.
`protected ContentState`	`createContentState(ContentEntry entry)` Creates an instanceof `JDBCState`.
`protected ContentFeatureSource`	`createFeatureSource(ContentEntry entry)` Creates a new instance of `JDBCFeatureStore`.
`FilterToSQL`	`createFilterToSQL(SimpleFeatureType featureType)` Creates a new instance of a filter to sql encoder.
`protected String`	`createGeometryAssociationTableSQL(Connection cx)` Creates the sql for the geometry association table.
`protected String`	`createGeometryTableSQL(Connection cx)` Creates the sql for the geometry table.
`void`	`createIndex(Index index)` Creates a new database index
`protected String`	`createMultiGeometryTableSQL(Connection cx)` Creates the sql for the multi_geometry table.
`PreparedFilterToSQL`	`createPreparedFilterToSQL(SimpleFeatureType featureType)` Creates a new instance of a filter to sql encoder to be used in a prepared statement.
`protected String`	`createRelationshipTableSQL(Connection cx)` Creates the sql for the relationship table.
`void`	`createSchema(SimpleFeatureType featureType)` Creates a table in the underlying database from the specified table.
`protected String`	`createTableSQL(SimpleFeatureType featureType, Connection cx)` Generates a 'CREATE TABLE' sql statement.
`protected List`	`createTypeNames()` Generates the list of type names provided by the database.
`void`	`createVirtualTable(VirtualTable vtable)` Adds a virtual table to the data store.
`protected static List<Object>`	`decodeFID(PrimaryKey key, String FID, boolean strict)` Decodes a fid into its components based on a primary key.
`protected void`	`delete(SimpleFeatureType featureType, Filter filter, Connection cx)` Deletes an existing feature(s) in the database for a particular feature type / table.
`protected void`	`delete(SimpleFeatureType featureType, String fid, Connection cx)` Deletes an existing feature in the database for a particular feature type / fid.
`protected String`	`deleteSQL(SimpleFeatureType featureType, Filter filter)` Generates a 'DELETE FROM' sql statement.
`protected PreparedStatement`	`deleteSQLPS(SimpleFeatureType featureType, Filter filter, Connection cx)` Generates a 'DELETE FROM' prepared statement.
`void`	`dispose()` Disposes of this data store and releases any resource that it is using.
`void`	`dropIndex(String typeName, String indexName)` Creates a new database index
`protected String`	`dropTableSQL(SimpleFeatureType featureType, Connection cx)` Generates a 'DROP TABLE' sql statement.
`VirtualTable`	`dropVirtualTable(String name)` Removes and returns the specified virtual table
`void`	`encodeAliasedTableName(String tableName, StringBuffer sql, Hints hints, String alias)` Helper method to encode table name which checks if a schema is set and prefixes the table name with it, with the addition of an alias to the name
`protected static String`	`encodeFID(List<Object> keyValues)`
`protected String`	`encodeFID(PrimaryKey pkey, ResultSet rs)` Calls through to: `encodeFID(pkey, rs, 0);`
`protected String`	`encodeFID(PrimaryKey pkey, ResultSet rs, int offset)` Encodes a feature id from a primary key and result set values.
`protected void`	`encodeFunction(String function, Expression expression, StringBuffer sql, FilterToSQL filterToSQL)`
`void`	`encodeGeometryColumn(GeometryDescriptor gatt, StringBuffer sql, Hints hints)` Encoding a geometry column with respect to hints Supported Hints are provided by `SQLDialect.addSupportedHints(Set)`
`protected void`	`encodeGeometryColumn(GeometryDescriptor gatt, String prefix, StringBuffer sql, Hints hints)`
`protected void`	`encodeGroupByStatement(List<Expression> groupByExpressions, StringBuffer sql, FilterToSQL filterToSQL, boolean aggregateOnExpression)` Helper method that adds a group by statement to the SQL query.
`protected void`	`encodeTableJoin(SimpleFeatureType featureType, JoinInfo join, Query query, StringBuffer sql)` Helper method to encode the join clause(s) of a query.
`void`	`encodeTableName(String tableName, StringBuffer sql, Hints hints)` Helper method to encode table name which checks if a schema is set and prefixes the table name with it.
`protected List<FilterToSQL>`	`encodeWhereJoin(SimpleFeatureType featureType, JoinInfo join, StringBuffer sql)`
`protected void`	`ensureAssociationTablesExist(Connection cx)` Helper method for creating geometry association table if it does not exist.
`protected void`	`ensureAuthorization(SimpleFeatureType featureType, Filter filter, Transaction tx, Connection cx)` Ensures that that the specified transaction has access to features specified by a filter.
`String`	`escapeNamePattern(DatabaseMetaData metaData, String name)` Escapes a name pattern used in e.g.
`protected List<Expression>`	`extractGroupByExpressions(FeatureVisitor visitor)` Helper method that extracts a list of group by attributes from a group by visitor.
`protected GroupByVisitor.GroupByRawResult`	`extractValuesFromResultSet(ResultSet resultSet, int numberOfGroupByAttributes)` Helper method that translate the result set to the appropriate group by visitor result format
`protected void`	`finalize()`
`protected String`	`findPrimaryKeyColumnName(SimpleFeatureType featureType)`
`JDBCFeatureSource`	`getAbsoluteFeatureSource(String typeName)`
`Map<Class<? extends FeatureVisitor>,String>`	`getAggregateFunctions()` Returns the supported aggregate functions and the visitors they map to.
`protected Object`	`getAggregateValue(FeatureVisitor visitor, SimpleFeatureType featureType, Query query, Connection cx)` Results the value of an aggregate function over a query.
`int`	`getBatchInsertSize()`
`protected ReferencedEnvelope`	`getBounds(SimpleFeatureType featureType, Query query, Connection cx)` Returns the bounds of the features for a particular feature type / table.
`JDBCCallbackFactory`	`getCallbackFactory()`
`Map<Class<?>,Integer>`	`getClassToSqlTypeMappings()` The java type to sql type mappings that the datastore uses when reading and writing objects to and from the database.
`protected static LinkedHashSet<String>`	`getColumnNames(PrimaryKey key)` Returns the set of the primary key column names.
`protected Class`	`getColumnType(DatabaseMetaData metaData, String databaseSchema2, String tableName, String columnName)` Returns the type of the column by inspecting the metadata, with the collaboration of the dialect
`protected Connection`	`getConnection(JDBCState state)` Gets a database connection for the specified feature store.
`Connection`	`getConnection(Transaction t)` Returns a JDBC Connection to the underlying database for the specified GeoTools `Transaction`.
`List<ConnectionLifecycleListener>`	`getConnectionLifecycleListeners()` Returns a modifiable list of connection lifecycle listeners
`protected int`	`getCount(SimpleFeatureType featureType, Query query, Connection cx)` Returns the count of the features for a particular feature type / table.
`String`	`getDatabaseSchema()` The schema from which this datastore is serving tables from.
`DataSource`	`getDataSource()` The data source the datastore uses to obtain connections to the underlying database.
`protected int`	`getDescriptorDimension(AttributeDescriptor descriptor)` Extracts the eventual native dimension user property from the descriptor, returns -1 if not found
`protected int`	`getDescriptorSRID(AttributeDescriptor descriptor)` Extracts the eventual native SRID user property from the descriptor, returns -1 if not found
`int`	`getFetchSize()` The current fetch size.
`FilterCapabilities`	`getFilterCapabilities()` The filter capabilities which reports which spatial operations the underlying database can handle natively.
`protected int`	`getGeometryDimension(Geometry g, AttributeDescriptor descriptor)` Looks up the geometry dimension by trying a number of heuristics.
`protected int`	`getGeometrySRID(Geometry g, AttributeDescriptor descriptor)` Looks up the geometry srs by trying a number of heuristics.
`Object`	`getGmlObject(GmlObjectId id, Hints hints)` Looks up an object by its gml id.
`List<Index>`	`getIndexes(String typeName)` Lists all indexes associated to the given feature type
`Integer`	`getMapping(Class<?> clazz)` Returns the sql type mapped to the specified java type.
`Class<?>`	`getMapping(int sqlType)` Returns the java type mapped to the specified sql type.
`Class<?>`	`getMapping(String sqlTypeName)` Returns the java type mapped to the specified sql type name.
`protected PrimaryKey`	`getPrimaryKey(ContentEntry entry)` Returns the primary key object for a particular entry, deriving it from the underlying database metadata.
`PrimaryKey`	`getPrimaryKey(SimpleFeatureType featureType)` Returns the primary key object for a particular feature type / table, deriving it from the underlying database metadata.
`PrimaryKeyFinder`	`getPrimaryKeyFinder()` Returns the finder used to build `PrimaryKey` representations
`protected String`	`getPropertyName(SimpleFeatureType featureType, PropertyName propertyName)` Helper method for executing a property name against a feature type.
`SQLDialect`	`getSQLDialect()` The dialect the datastore uses to generate sql statements in order to communicate with the underlying database.
`Map<String,Class<?>>`	`getSqlTypeNameToClassMappings()` The sql type name to java type mappings that the dialect uses when reading and writing objects to and from the database.
`Map<Integer,Class<?>>`	`getSqlTypeToClassMappings()` The sql type to java type mappings that the datastore uses when reading and writing objects to and from the database.
`Map<Integer,String>`	`getSqlTypeToSqlTypeNameOverrides()` Returns any ovverides which map integer constants for database types (from `Types`) to database type names.
`Map<String,String>`	`getSupportedFunctions()` Returns the supported functions and the dialect name they map to.
`Map<String,VirtualTable>`	`getVirtualTables()` Returns a live, immutable view of the virtual tables map (from name to definition)
`protected <F extends FilterToSQL> F`	`initializeFilterToSQL(F toSQL, SimpleFeatureType featureType)` Helper method to initialize a filter encoder instance.
`protected void`	`insert(Collection<? extends SimpleFeature> features, SimpleFeatureType featureType, Connection cx)` Inserts a collection of new features into the database for a particular feature type / table.
`protected void`	`insert(SimpleFeature feature, SimpleFeatureType featureType, Connection cx)` Inserts a new feature into the database for a particular feature type / table.
`protected String`	`insertSQL(SimpleFeatureType featureType, SimpleFeature feature, KeysFetcher keysFetcher, Connection cx)` Generates a 'INSERT INFO' sql statement.
`boolean`	`isAssociations()` Flag controlling if the datastore is supporting feature and geometry relationships with associations
`protected boolean`	`isCountVisitor(FeatureVisitor visitor)`
`boolean`	`isExposePrimaryKeyColumns()` Determines if the datastore creates feature types which include those columns / attributes which compose the primary key.
`protected boolean`	`isExposePrimaryKeyColumns(SimpleFeatureType featureType)` Returns the expose primary key columns flag for the specified feature type
`protected boolean`	`isGeneralizationRequired(Hints hints, GeometryDescriptor gatt)` Checks if geometry generalization required and makes sense
`protected boolean`	`isGenerated(PrimaryKey pkey)` Determines if a primary key is made up entirely of column which are generated via an auto-generating column or a sequence.
`protected boolean`	`isGeometryReduceRequired(Hints hints, GeometryDescriptor gatt, Hints.Key param)` Checks if reduction required and makes sense
`protected boolean`	`isGroupByVisitor(FeatureVisitor visitor)` Helper method the checks if a feature visitor is a group by visitor,
`protected boolean`	`isSimplificationRequired(Hints hints, GeometryDescriptor gatt)` Checks if geometry simplification required and makes sense
`protected String`	`matchAggregateFunction(FeatureVisitor visitor)` Helper method that will try to match a feature visitor with an aggregate function.
`protected void`	`releaseConnection(Connection cx, JDBCState state)` Releases an existing connection (paying special attention to `Transaction.AUTO_COMMIT`.
`void`	`removeSchema(Name typeName)` Used to permanently remove a schema from the underlying storage This functionality is similar to an "drop table" statement in SQL.
`void`	`removeSchema(String typeName)` Used to permanently remove a schema from the underlying storage This functionality is similar to an "drop table" statement in SQL.
`VirtualTable`	`removeVirtualTable(String name)` Deprecated. Use dropVirtualTable instead
`protected String`	`selectAggregateSQL(String function, Expression att, List<Expression> groupByExpressions, SimpleFeatureType featureType, Query query, LimitingVisitor visitor)`
`protected PreparedStatement`	`selectAggregateSQLPS(String function, Expression att, List<Expression> groupByExpressions, SimpleFeatureType featureType, Query query, LimitingVisitor visitor, Connection cx)`
`protected String`	`selectAssociationSQL(String fid)` Creates the sql for the association table.
`protected PreparedStatement`	`selectAssociationSQLPS(String fid, Connection cx)` Creates the prepared statement for the association table.
`protected String`	`selectBoundsSQL(SimpleFeatureType featureType, Query query)` Generates a 'SELECT' sql statement which selects bounds.
`protected PreparedStatement`	`selectBoundsSQLPS(SimpleFeatureType featureType, Query query, Connection cx)` Generates a 'SELECT' prepared statement which selects bounds.
`protected String`	`selectGeometryAssociationSQL(String fid, String gid, String gname)` Creates the sql for a select from the geometry association table.
`protected PreparedStatement`	`selectGeometryAssociationSQLPS(String fid, String gid, String gname, Connection cx)` Creates the prepared statement for a select from the geometry association table.
`protected String`	`selectGeometrySQL(String gid)` Creates the sql for a select from the geometry table.
`protected PreparedStatement`	`selectGeometrySQLPS(String gid, Connection cx)` Creates the prepared for a select from the geometry table.
`protected String`	`selectJoinSQL(SimpleFeatureType featureType, JoinInfo join, Query query)`
`protected PreparedStatement`	`selectJoinSQLPS(SimpleFeatureType featureType, JoinInfo join, Query query, Connection cx)`
`protected String`	`selectMultiGeometrySQL(String gid)` Creates the sql for a select from the multi geometry table.
`protected PreparedStatement`	`selectMultiGeometrySQLPS(String gid, Connection cx)` Creates the prepared statement for a select from the multi geometry table.
`protected String`	`selectRelationshipSQL(String table, String column)` Creates the sql for the relationship table.
`protected PreparedStatement`	`selectRelationshipSQLPS(String table, String column, Connection cx)` Creates the prepared statement for a query against the relationship table.
`protected String`	`selectSQL(SimpleFeatureType featureType, Query query)` Generates a 'SELECT p1, p2, ...
`protected PreparedStatement`	`selectSQLPS(SimpleFeatureType featureType, Query query, Connection cx)` Generates a 'SELECT p1, p2, ...
`void`	`setAssociations(boolean foreignKeyGeometries)` Sets the flag controlling if the datastore is supporting feature and geometry relationships with associations
`void`	`setBatchInsertSize(int batchInsertSize)` Set the number of features to bufferize while inserting in order to do batch inserts.
`void`	`setCallbackFactory(JDBCCallbackFactory factory)`
`void`	`setDatabaseSchema(String databaseSchema)` Set the database schema for the datastore.
`void`	`setDataSource(DataSource dataSource)` Sets the data source the datastore uses to obtain connections to the underlying database.
`void`	`setExposePrimaryKeyColumns(boolean exposePrimaryKeyColumns)` Sets the flag controlling if the datastore creates feature types which include those columns / attributes which compose the primary key.
`void`	`setFetchSize(int fetchSize)` Changes the fetch size.
`protected void`	`setGmlProperties(Geometry g, String gid, String name, String description)` Helper method for setting the gml:id of a geometry as user data.
`protected void`	`setPreparedFilterValues(PreparedStatement ps, List toSQLs, Connection cx)` Helper method for setting the values of the WHERE class of a prepared statement from a list of PreparedFilterToSQL.
`void`	`setPreparedFilterValues(PreparedStatement ps, PreparedFilterToSQL toSQL, int offset, Connection cx)` Helper method for setting the values of the WHERE class of a prepared statement.
`void`	`setPrimaryKeyFinder(PrimaryKeyFinder primaryKeyFinder)` Sets the finder used to build `PrimaryKey` representations
`void`	`setSQLDialect(SQLDialect dialect)` Sets the dialect the datastore uses to generate sql statements in order to communicate with the underlying database.
`protected void`	`update(SimpleFeatureType featureType, AttributeDescriptor[] attributes, Object[] values, Filter filter, Connection cx)` Updates an existing feature(s) in the database for a particular feature type / table.
`protected void`	`update(SimpleFeatureType featureType, List<AttributeDescriptor> attributes, List<Object> values, Filter filter, Connection cx)` Updates an existing feature(s) in the database for a particular feature type / table.
`protected String`	`updateSQL(SimpleFeatureType featureType, AttributeDescriptor[] attributes, Object[] values, Filter filter, Set<String> pkColumnNames)` Generates an 'UPDATE' sql statement.
`protected PreparedStatement`	`updateSQLPS(SimpleFeatureType featureType, AttributeDescriptor[] attributes, Object[] values, Filter filter, Set<String> pkColumnNames, Connection cx)` Generates an 'UPDATE' prepared statement.

Methods inherited from class Object
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - TRACE_ENABLED
```
protected static final Boolean TRACE_ENABLED
```
    When true, record a stack trace documenting who disposed the JDBCDataStore. If dispose() is called a second time we can identify the offending parties.
  - JDBC_NATIVE_SRID
```
public static final String JDBC_NATIVE_SRID
```
    The native SRID associated to a certain descriptor TODO: qualify this key with 'org.geotools.jdbc'
    
    See Also:
    
    Constant Field Values
  - JDBC_READ_ONLY
```
public static final String JDBC_READ_ONLY
```
    Boolean marker stating whether the feature type is to be considered read only
    
    See Also:
    
    Constant Field Values
  - JDBC_PRIMARY_KEY_COLUMN
```
public static final String JDBC_PRIMARY_KEY_COLUMN
```
    Boolean marker stating whether an attribute is part of the primary key
    
    See Also:
    
    Constant Field Values
  - JDBC_NATIVE_TYPENAME
```
public static final String JDBC_NATIVE_TYPENAME
```
    The key for attribute descriptor user data which specifies the original database column data type.
    
    See Also:
    
    Constant Field Values
  - JDBC_NATIVE_TYPE
```
public static final String JDBC_NATIVE_TYPE
```
    The key for attribute descriptor user data which specifies the original database column data type, as a Types value.
    
    See Also:
    
    Constant Field Values
  - JDBC_COLUMN_ALIAS
```
public static final String JDBC_COLUMN_ALIAS
```
    Used to specify the column alias to use when encoding a column in a select
    
    See Also:
    
    Constant Field Values
  - GEOMETRY_TABLE
```
protected static final String GEOMETRY_TABLE
```
    name of table to use to store geometries when associations is set.
    
    See Also:
    
    Constant Field Values
  - MULTI_GEOMETRY_TABLE
```
protected static final String MULTI_GEOMETRY_TABLE
```
    name of table to use to store multi geometries made up of non-multi geometries when associations is set.
    
    See Also:
    
    Constant Field Values
  - GEOMETRY_ASSOCIATION_TABLE
```
protected static final String GEOMETRY_ASSOCIATION_TABLE
```
    name of table to use to store geometry associations when associations is set.
    
    See Also:
    
    Constant Field Values
  - FEATURE_RELATIONSHIP_TABLE
```
protected static final String FEATURE_RELATIONSHIP_TABLE
```
    name of table to use to store feature relationships (information about associations) when associations is set.
    
    See Also:
    
    Constant Field Values
  - FEATURE_ASSOCIATION_TABLE
```
protected static final String FEATURE_ASSOCIATION_TABLE
```
    name of table to use to store feature associations when associations is set.
    
    See Also:
    
    Constant Field Values
  - EMPTY_ENVELOPE
```
protected static final ReferencedEnvelope EMPTY_ENVELOPE
```
    The envelope returned when bounds is called against a geometryless feature type
  - MAX_IDS_IN_FILTER
```
public static final int MAX_IDS_IN_FILTER
```
    Max number of ids to use for the optimized locks checking filter.
    
    See Also:
    
    Constant Field Values
  - dataSource
```
protected DataSource dataSource
```
    data source
  - dialect
```
public SQLDialect dialect
```
    the dialect of sql
  - databaseSchema
```
protected String databaseSchema
```
    The database schema.
  - sqlTypeToClassMappings
```
protected HashMap<Integer,Class<?>> sqlTypeToClassMappings
```
    sql type to java class mappings
  - sqlTypeNameToClassMappings
```
protected HashMap<String,Class<?>> sqlTypeNameToClassMappings
```
    sql type name to java class mappings
  - classToSqlTypeMappings
```
protected HashMap<Class<?>,Integer> classToSqlTypeMappings
```
    java class to sql type mappings;
  - sqlTypeToSqlTypeNameOverrides
```
protected HashMap<Integer,String> sqlTypeToSqlTypeNameOverrides
```
    sql type to sql type name overrides
  - aggregateFunctions
```
protected HashMap<Class<? extends FeatureVisitor>,String> aggregateFunctions
```
    Feature visitor to aggregate function name
  - supportedFunctions
```
protected HashMap<String,String> supportedFunctions
```
    java supported filter function mappings to dialect name;
  - associations
```
protected boolean associations
```
    flag controlling if the datastore is supporting feature and geometry relationships with associations
  - fetchSize
```
public int fetchSize
```
    The fetch size for this datastore, defaulting to 1000. Set to a value less or equal to 0 to disable fetch size limit and grab all the records in one shot.
  - batchInsertSize
```
protected int batchInsertSize
```
    The number of features to bufferize while inserting in order to do batch inserts.
    By default 1 to avoid backward compatibility with badly written code that forgets to close the JDBCInsertFeatureWriter or does it after closing the DB connection.
  - exposePrimaryKeyColumns
```
protected boolean exposePrimaryKeyColumns
```
    flag controlling whether primary key columns of a table are exposed via the feature type.
  - primaryKeyFinder
```
protected PrimaryKeyFinder primaryKeyFinder
```
    Finds the primary key definitions (instantiated here because the finders might keep state)
  - virtualTables
```
protected Map<String,VirtualTable> virtualTables
```
    Contains the SQL definition of the various virtual tables
  - connectionLifecycleListeners
```
protected List<ConnectionLifecycleListener> connectionLifecycleListeners
```
    The listeners that are allowed to handle the connection lifecycle
  - callbackFactory
```
protected JDBCCallbackFactory callbackFactory
```
- Constructor Detail
  - JDBCDataStore
```
public JDBCDataStore()
```
- Method Detail
  - setCallbackFactory
```
public void setCallbackFactory(JDBCCallbackFactory factory)
```
  - getCallbackFactory
```
public JDBCCallbackFactory getCallbackFactory()
```
  - getAbsoluteFeatureSource
```
public JDBCFeatureSource getAbsoluteFeatureSource(String typeName)
                                           throws IOException
```
    Throws:
    
    IOException
  - addVirtualTable
```
public void addVirtualTable(VirtualTable vtable)
                     throws IOException
```
    Deprecated. Use createVirtualTable instead
    
    Adds a virtual table to the data store. If a virtual table with the same name was registered this method will replace it with the new one. * @param vt
    
    Throws:
    
    IOException - If the view definition is not valid
  - createVirtualTable
```
public void createVirtualTable(VirtualTable vtable)
                        throws IOException
```
    Adds a virtual table to the data store. If a virtual table with the same name was registered this method will replace it with the new one. * @param vt
    
    Throws:
    
    IOException - If the view definition is not valid
  - getConnectionLifecycleListeners
```
public List<ConnectionLifecycleListener> getConnectionLifecycleListeners()
```
    Returns a modifiable list of connection lifecycle listeners
    
    Returns:
  - removeVirtualTable
```
public VirtualTable removeVirtualTable(String name)
```
    Deprecated. Use dropVirtualTable instead
    
    Removes and returns the specified virtual table
    
    Parameters:
    
    name -
    
    Returns:
  - dropVirtualTable
```
public VirtualTable dropVirtualTable(String name)
```
    Removes and returns the specified virtual table
    
    Parameters:
    
    name -
    
    Returns:
  - getVirtualTables
```
public Map<String,VirtualTable> getVirtualTables()
```
    Returns a live, immutable view of the virtual tables map (from name to definition)
    
    Returns:
  - getPrimaryKeyFinder
```
public PrimaryKeyFinder getPrimaryKeyFinder()
```
    Returns the finder used to build PrimaryKey representations
    
    Returns:
  - setPrimaryKeyFinder
```
public void setPrimaryKeyFinder(PrimaryKeyFinder primaryKeyFinder)
```
    Sets the finder used to build PrimaryKey representations
    
    Parameters:
    
    primaryKeyFinder -
  - getFetchSize
```
public int getFetchSize()
```
    The current fetch size. The fetch size influences how many records are read from the dbms at a time. If set to a value less or equal than zero, all the records will be read in one shot, severily increasing the memory requirements to read a big number of features.
    
    Returns:
  - setFetchSize
```
public void setFetchSize(int fetchSize)
```
    Changes the fetch size.
    
    Parameters:
    
    fetchSize -
  - getBatchInsertSize
```
public int getBatchInsertSize()
```
    Returns:
    
    the number of features to bufferize while inserting in order to do batch inserts.
  - setBatchInsertSize
```
public void setBatchInsertSize(int batchInsertSize)
```
    Set the number of features to bufferize while inserting in order to do batch inserts.
    Warning: when changing this value from its default of 1, the behavior of the JDBCInsertFeatureWriter is changed in non backward compatible ways. If your code closes the writer before closing the connection, you are fine. Plus, the feature added events will be delayed until a batch is actually inserted.
    
    Parameters:
    
    batchInsertSize -
  - isExposePrimaryKeyColumns
```
public boolean isExposePrimaryKeyColumns()
```
    Determines if the datastore creates feature types which include those columns / attributes which compose the primary key.
  - setExposePrimaryKeyColumns
```
public void setExposePrimaryKeyColumns(boolean exposePrimaryKeyColumns)
```
    Sets the flag controlling if the datastore creates feature types which include those columns / attributes which compose the primary key.
  - getSQLDialect
```
public SQLDialect getSQLDialect()
```
    The dialect the datastore uses to generate sql statements in order to communicate with the underlying database.
    
    Returns:
    
    The dialect, never null.
  - setSQLDialect
```
public void setSQLDialect(SQLDialect dialect)
```
    Sets the dialect the datastore uses to generate sql statements in order to communicate with the underlying database.
    
    Parameters:
    
    dialect - The dialect, never null.
  - getDataSource
```
public DataSource getDataSource()
```
    The data source the datastore uses to obtain connections to the underlying database.
    
    Returns:
    
    The data source, never null.
  - setDataSource
```
public void setDataSource(DataSource dataSource)
```
    Sets the data source the datastore uses to obtain connections to the underlying database.
    
    Parameters:
    
    dataSource - The data source, never null.
  - getDatabaseSchema
```
public String getDatabaseSchema()
```
    The schema from which this datastore is serving tables from.
    
    Returns:
    
    the schema, or null if non specified.
  - setDatabaseSchema
```
public void setDatabaseSchema(String databaseSchema)
```
    Set the database schema for the datastore.
    When this value is set only those tables which are part of the schema are served through the datastore. This value can be set to null to specify no particular schema.
    
    Parameters:
    
    databaseSchema - The schema, may be null.
  - getFilterCapabilities
```
public FilterCapabilities getFilterCapabilities()
```
    The filter capabilities which reports which spatial operations the underlying database can handle natively.
    
    Returns:
    
    The filter capabilities, never null.
  - isAssociations
```
public boolean isAssociations()
```
    Flag controlling if the datastore is supporting feature and geometry relationships with associations
  - setAssociations
```
public void setAssociations(boolean foreignKeyGeometries)
```
    Sets the flag controlling if the datastore is supporting feature and geometry relationships with associations
  - getSqlTypeToClassMappings
```
public Map<Integer,Class<?>> getSqlTypeToClassMappings()
```
    The sql type to java type mappings that the datastore uses when reading and writing objects to and from the database.
    These mappings are derived from SQLDialect.registerSqlTypeToClassMappings(java.util.Map)
    
    Returns:
    
    The mappings, never null.
  - getSqlTypeNameToClassMappings
```
public Map<String,Class<?>> getSqlTypeNameToClassMappings()
```
    The sql type name to java type mappings that the dialect uses when reading and writing objects to and from the database.
    These mappings are derived from SQLDialect.registerSqlTypeNameToClassMappings(Map)
    
    Returns:
    
    The mappings, never null.
  getClassToSqlTypeMappings public Map<Class<?>,Integer> getClassToSqlTypeMappings() The java type to sql type mappings that the datastore uses when reading and writing objects to and from the database. These mappings are derived from SQLDialect.registerClassToSqlMappings(Map) Returns: The mappings, never null. getSqlTypeToSqlTypeNameOverrides public Map<Integer,String> getSqlTypeToSqlTypeNameOverrides() Returns any ovverides which map integer constants for database types (from Types) to database type names. This method will return an empty map when there are no overrides. getAggregateFunctions public Map<Class<? extends FeatureVisitor>,String> getAggregateFunctions() Returns the supported aggregate functions and the visitors they map to. getSupportedFunctions public Map<String,String> getSupportedFunctions() Returns the supported functions and the dialect name they map to. getMapping public Class<?> getMapping(int sqlType) Returns the java type mapped to the specified sql type. If there is no such type mapped to sqlType, null is returned. Parameters: sqlType - The integer constant for the sql type from Types. Returns: The mapped java class, or null. if no such mapping exists. getMapping public Class<?> getMapping(String sqlTypeName) Returns the java type mapped to the specified sql type name. If there is no such type mapped to sqlTypeName, null is returned. Parameters: sqlTypeName - The name of the sql type. Returns: The mapped java class, or null. if no such mapping exists. getMapping public Integer getMapping(Class<?> clazz) Returns the sql type mapped to the specified java type. If there is no such type mapped to clazz, Types.OTHER is returned. Parameters: clazz - The java class. Returns: The mapped sql type from Types, Types.OTHER if no such mapping exists. createSchema public void createSchema(SimpleFeatureType featureType) throws IOException Creates a table in the underlying database from the specified table. This method will map the classes of the attributes of featureType to sql types and generate a 'CREATE TABLE' statement against the underlying database. Specified by: createSchema in interface DataAccess<SimpleFeatureType,SimpleFeature> Overrides: createSchema in class ContentDataStore Parameters: featureType - FetureType to add to DataStore Throws: IllegalArgumentException - If the table already exists. IOException - If the table cannot be created due to an error. See Also: DataStore#createSchema(SimpleFeatureType) removeSchema public void removeSchema(String typeName) throws IOException Description copied from interface: DataStore Used to permanently remove a schema from the underlying storage This functionality is similar to an "drop table" statement in SQL. Implementation is optional; it may not be supported by all servers or files. Specified by: removeSchema in interface DataStore Overrides: removeSchema in class ContentDataStore Throws: IOException - if the operation failed See Also: DataStore.removeSchema(String) removeSchema public void removeSchema(Name typeName) throws IOException Description copied from interface: DataAccess Used to permanently remove a schema from the underlying storage This functionality is similar to an "drop table" statement in SQL. Implementation is optional; it may not be supported by all servers or files. Specified by: removeSchema in interface DataAccess<SimpleFeatureType,SimpleFeature> Overrides: removeSchema in class ContentDataStore Throws: IOException - if the operation failed See Also: DataAccess.removeSchema(Name) getGmlObject public Object getGmlObject(GmlObjectId id, Hints hints) throws IOException Description copied from interface: GmlObjectStore Looks up an object by its gml id. This method returns null if no such object exists. Specified by: getGmlObject in interface GmlObjectStore Parameters: id - The id of the object, must not be null. hints - Any hints to use when looking up the gml object, this value may be null . Returns: The gml object, or null if one could not be found matching the specified id. Throws: IOException - Any I/O errors that occur. createFeatureSource protected ContentFeatureSource createFeatureSource(ContentEntry entry) throws IOException Creates a new instance of JDBCFeatureStore. Specified by: createFeatureSource in class ContentDataStore Parameters: entry - The entry. Returns: An new instance of ContentFeatureSource for the entry. Throws: IOException See Also: ContentDataStore.createFeatureSource(ContentEntry) createContentState protected ContentState createContentState(ContentEntry entry) Creates an instanceof JDBCState. Overrides: createContentState in class ContentDataStore Parameters: entry - The entry. Returns: A new instance of ContentState for the entry. See Also: ContentDataStore.createContentState(ContentEntry) createTypeNames protected List createTypeNames() throws IOException Generates the list of type names provided by the database. The list is generated from the underlying database metadata. Specified by: createTypeNames in class ContentDataStore Returns: A list of Name. Throws: IOException - Any errors occuring connecting to data. getPrimaryKey protected PrimaryKey getPrimaryKey(ContentEntry entry) throws IOException Returns the primary key object for a particular entry, deriving it from the underlying database metadata. Throws: IOException getColumnType protected Class getColumnType(DatabaseMetaData metaData, String databaseSchema2, String tableName, String columnName) throws SQLException Returns the type of the column by inspecting the metadata, with the collaboration of the dialect Throws: SQLException getPrimaryKey public PrimaryKey getPrimaryKey(SimpleFeatureType featureType) throws IOException Returns the primary key object for a particular feature type / table, deriving it from the underlying database metadata. Throws: IOException isExposePrimaryKeyColumns protected boolean isExposePrimaryKeyColumns(SimpleFeatureType featureType) throws IOException Returns the expose primary key columns flag for the specified feature type Parameters: featureType - Returns: Throws: IOException getBounds protected ReferencedEnvelope getBounds(SimpleFeatureType featureType, Query query, Connection cx) throws IOException Returns the bounds of the features for a particular feature type / table. Parameters: featureType - The feature type / table. query - Specifies rows to include in bounds calculation, as well as how many features and the offset if needed Throws: IOException getCount protected int getCount(SimpleFeatureType featureType, Query query, Connection cx) throws IOException Returns the count of the features for a particular feature type / table. Throws: IOException getAggregateValue protected Object getAggregateValue(FeatureVisitor visitor, SimpleFeatureType featureType, Query query, Connection cx) throws IOException Results the value of an aggregate function over a query. Returns: generated result, or null if unsupported Throws: IOException isCountVisitor protected boolean isCountVisitor(FeatureVisitor visitor) isGroupByVisitor protected boolean isGroupByVisitor(FeatureVisitor visitor) Helper method the checks if a feature visitor is a group by visitor, Parameters: visitor - the feature visitor Returns: TRUE if the visitor is a group by visitor otherwise FALSE matchAggregateFunction protected String matchAggregateFunction(FeatureVisitor visitor) Helper method that will try to match a feature visitor with an aggregate function. If no aggregate function machs the visitor NULL will be returned. Parameters: visitor - the feature visitor Returns: the match aggregate function name, or NULL if no match extractGroupByExpressions protected List<Expression> extractGroupByExpressions(FeatureVisitor visitor) Helper method that extracts a list of group by attributes from a group by visitor. If the visitor is not a group by visitor an empty list will be returned. Parameters: visitor - the feature visitor Returns: the list of the group by attributes or an empty list extractValuesFromResultSet protected GroupByVisitor.GroupByRawResult extractValuesFromResultSet(ResultSet resultSet, int numberOfGroupByAttributes) throws SQLException Helper method that translate the result set to the appropriate group by visitor result format Throws: SQLException insert protected void insert(SimpleFeature feature, SimpleFeatureType featureType, Connection cx) throws IOException Inserts a new feature into the database for a particular feature type / table. Throws: IOException insert protected void insert(Collection<? extends SimpleFeature> features, SimpleFeatureType featureType, Connection cx) throws IOException Inserts a collection of new features into the database for a particular feature type / table. Throws: IOException update protected void update(SimpleFeatureType featureType, List<AttributeDescriptor> attributes, List<Object> values, Filter filter, Connection cx) throws IOException, SQLException Updates an existing feature(s) in the database for a particular feature type / table. Throws: IOException SQLException update protected void update(SimpleFeatureType featureType, AttributeDescriptor[] attributes, Object[] values, Filter filter, Connection cx) throws IOException, SQLException Updates an existing feature(s) in the database for a particular feature type / table. Throws: IOException SQLException delete protected void delete(SimpleFeatureType featureType, String fid, Connection cx) throws IOException Deletes an existing feature in the database for a particular feature type / fid. Throws: IOException delete protected void delete(SimpleFeatureType featureType, Filter filter, Connection cx) throws IOException Deletes an existing feature(s) in the database for a particular feature type / table. Throws: IOException getConnection public Connection getConnection(Transaction t) throws IOException Returns a JDBC Connection to the underlying database for the specified GeoTools Transaction. This has two main use cases: Independently accessing the underlying database directly reusing the connection pool contained in the JDBCDataStore Performing some direct access to the database in the same JDBC transaction as the Geotools code The connection shall be used in a different way depending on the use case: If the transaction is Transaction.AUTO_COMMIT or if the transaction is not shared with this data store and originating FeatureStore objects it is the duty of the caller to properly close the connection after usage, failure to do so will result in the connection pool loose one available connection permanently If the transaction is on the other side a valid transaction is shared with Geotools the client code should refrain from closing the connection, committing or rolling back, and use the Transaction facilities to do so instead Parameters: t - The GeoTools transaction. Can be null, in that case a new connection will be returned (as if Transaction.AUTO_COMMIT was provided) Throws: IOException getConnection protected final Connection getConnection(JDBCState state) throws IOException Gets a database connection for the specified feature store. Throws: IOException createConnection protected final Connection createConnection() Creates a new connection. Callers of this method should close the connection when done with it. . releaseConnection protected final void releaseConnection(Connection cx, JDBCState state) Releases an existing connection (paying special attention to Transaction.AUTO_COMMIT. If the state is based off the AUTO_COMMIT transaction - close using closeSafe(Connection). Otherwise wait until the transaction itself is closed to close the connection. encodeFID protected String encodeFID(PrimaryKey pkey, ResultSet rs) throws SQLException, IOException Calls through to: encodeFID(pkey, rs, 0); Throws: SQLException IOException encodeFID protected String encodeFID(PrimaryKey pkey, ResultSet rs, int offset) throws SQLException, IOException Encodes a feature id from a primary key and result set values. offset specifies where in the result set to start from when reading values for the primary key. Throws: SQLException IOException encodeFID protected static String encodeFID(List<Object> keyValues) decodeFID protected static List<Object> decodeFID(PrimaryKey key, String FID, boolean strict) Decodes a fid into its components based on a primary key. Parameters: strict - If set to true the value of the fid will be validated against the type of the key columns. If a conversion can not be made, an exception will be thrown. isGenerated protected boolean isGenerated(PrimaryKey pkey) Determines if a primary key is made up entirely of column which are generated via an auto-generating column or a sequence. createTableSQL protected String createTableSQL(SimpleFeatureType featureType, Connection cx) throws Exception Generates a 'CREATE TABLE' sql statement. Throws: Exception findPrimaryKeyColumnName protected String findPrimaryKeyColumnName(SimpleFeatureType featureType) dropTableSQL protected String dropTableSQL(SimpleFeatureType featureType, Connection cx) throws Exception Generates a 'DROP TABLE' sql statement. Throws: Exception ensureAuthorization protected void ensureAuthorization(SimpleFeatureType featureType, Filter filter, Transaction tx, Connection cx) throws IOException, SQLException Ensures that that the specified transaction has access to features specified by a filter. If any features matching the filter are locked, and the transaction does not have authorization with respect to the lock, an exception is thrown. Parameters: featureType - The feature type / table. filter - The filters. tx - The transaction. cx - The database connection. Throws: IOException SQLException ensureAssociationTablesExist protected void ensureAssociationTablesExist(Connection cx) throws IOException, SQLException Helper method for creating geometry association table if it does not exist. Throws: IOException SQLException createRelationshipTableSQL protected String createRelationshipTableSQL(Connection cx) throws SQLException Creates the sql for the relationship table. This method is only called when isAssociations() is true. Throws: SQLException createAssociationTableSQL protected String createAssociationTableSQL(Connection cx) throws SQLException Creates the sql for the association table. This method is only called when isAssociations() is true. Throws: SQLException createGeometryTableSQL protected String createGeometryTableSQL(Connection cx) throws SQLException Creates the sql for the geometry table. This method is only called when isAssociations() is true. Throws: SQLException createMultiGeometryTableSQL protected String createMultiGeometryTableSQL(Connection cx) throws SQLException Creates the sql for the multi_geometry table. This method is only called when isAssociations() is true. Throws: SQLException selectRelationshipSQL protected String selectRelationshipSQL(String table, String column) throws SQLException Creates the sql for the relationship table. This method is only called when isAssociations() is true. Parameters: table - The table of the association column - The column of the association Throws: SQLException selectRelationshipSQLPS protected PreparedStatement selectRelationshipSQLPS(String table, String column, Connection cx) throws SQLException Creates the prepared statement for a query against the relationship table. This method is only called when isAssociations() is true. Parameters: table - The table of the association column - The column of the association Throws: SQLException selectAssociationSQL protected String selectAssociationSQL(String fid) throws SQLException Creates the sql for the association table. This method is only called when isAssociations() is true. Parameters: fid - The feature id of the association Throws: SQLException selectAssociationSQLPS protected PreparedStatement selectAssociationSQLPS(String fid, Connection cx) throws SQLException Creates the prepared statement for the association table. This method is only called when isAssociations() is true. Parameters: fid - The feature id of the association Throws: SQLException selectGeometrySQL protected String selectGeometrySQL(String gid) throws SQLException Creates the sql for a select from the geometry table. This method is only called when isAssociations() is true. Parameters: gid - The geometry id to select for, may be null Throws: SQLException selectGeometrySQLPS protected PreparedStatement selectGeometrySQLPS(String gid, Connection cx) throws SQLException Creates the prepared for a select from the geometry table. This method is only called when isAssociations() is true. Parameters: gid - The geometry id to select for, may be null Throws: SQLException selectMultiGeometrySQL protected String selectMultiGeometrySQL(String gid) throws SQLException Creates the sql for a select from the multi geometry table. This method is only called when isAssociations() is true. Parameters: gid - The geometry id to select for, may be null. Throws: SQLException selectMultiGeometrySQLPS protected PreparedStatement selectMultiGeometrySQLPS(String gid, Connection cx) throws SQLException Creates the prepared statement for a select from the multi geometry table. This method is only called when isAssociations() is true. Parameters: gid - The geometry id to select for, may be null. Throws: SQLException createGeometryAssociationTableSQL protected String createGeometryAssociationTableSQL(Connection cx) throws SQLException Creates the sql for the geometry association table. This method is only called when isAssociations() is true. Throws: SQLException selectGeometryAssociationSQL protected String selectGeometryAssociationSQL(String fid, String gid, String gname) throws SQLException Creates the sql for a select from the geometry association table. Parameters: fid - The fid to select for, may be null gid - The geometry id to select for, may be null gname - The geometry name to select for, may be null Throws: SQLException selectGeometryAssociationSQLPS protected PreparedStatement selectGeometryAssociationSQLPS(String fid, String gid, String gname, Connection cx) throws SQLException Creates the prepared statement for a select from the geometry association table. Parameters: fid - The fid to select for, may be null gid - The geometry id to select for, may be null gname - The geometry name to select for, may be null Throws: SQLException selectSQL protected String selectSQL(SimpleFeatureType featureType, Query query) throws IOException, SQLException Generates a 'SELECT p1, p2, ... FROM ... WHERE ...' statement. Parameters: featureType - the feature type that the query must return (may contain less attributes than the native one) attributes - the properties queried, or Query.ALL_NAMES to gather all of them query - the query to be run. The type name and property will be ignored, as they are supposed to have been already embedded into the provided feature type sort - sort conditions Throws: IOException SQLException selectJoinSQL protected String selectJoinSQL(SimpleFeatureType featureType, JoinInfo join, Query query) throws IOException, SQLException Throws: IOException SQLException selectSQLPS protected PreparedStatement selectSQLPS(SimpleFeatureType featureType, Query query, Connection cx) throws SQLException, IOException Generates a 'SELECT p1, p2, ... FROM ... WHERE ...' prepared statement. Parameters: featureType - the feature type that the query must return (may contain less attributes than the native one) attributes - the properties queried, or Query.ALL_NAMES to gather all of them query - the query to be run. The type name and property will be ignored, as they are supposed to have been already embedded into the provided feature type cx - The database connection to be used to create the prepared statement Throws: SQLException IOException selectJoinSQLPS protected PreparedStatement selectJoinSQLPS(SimpleFeatureType featureType, JoinInfo join, Query query, Connection cx) throws SQLException, IOException Throws: SQLException IOException setPreparedFilterValues protected void setPreparedFilterValues(PreparedStatement ps, List toSQLs, Connection cx) throws SQLException Helper method for setting the values of the WHERE class of a prepared statement from a list of PreparedFilterToSQL. Throws: SQLException setPreparedFilterValues public void setPreparedFilterValues(PreparedStatement ps, PreparedFilterToSQL toSQL, int offset, Connection cx) throws SQLException Helper method for setting the values of the WHERE class of a prepared statement. Throws: SQLException getPropertyName protected String getPropertyName(SimpleFeatureType featureType, PropertyName propertyName) Helper method for executing a property name against a feature type. This method will fall back on PropertyName.getPropertyName() if it does not evaulate against the feature type. selectBoundsSQL protected String selectBoundsSQL(SimpleFeatureType featureType, Query query) throws SQLException Generates a 'SELECT' sql statement which selects bounds. Parameters: featureType - The feature type / table. query - Specifies which features are to be used for the bounds computation (and in particular uses filter, start index and max features) Throws: SQLException selectBoundsSQLPS protected PreparedStatement selectBoundsSQLPS(SimpleFeatureType featureType, Query query, Connection cx) throws SQLException Generates a 'SELECT' prepared statement which selects bounds. Parameters: featureType - The feature type / table. query - Specifies which features are to be used for the bounds computation (and in particular uses filter, start index and max features) cx - A database connection. Throws: SQLException selectAggregateSQL protected String selectAggregateSQL(String function, Expression att, List<Expression> groupByExpressions, SimpleFeatureType featureType, Query query, LimitingVisitor visitor) throws SQLException, IOException Throws: SQLException IOException selectAggregateSQLPS protected PreparedStatement selectAggregateSQLPS(String function, Expression att, List<Expression> groupByExpressions, SimpleFeatureType featureType, Query query, LimitingVisitor visitor, Connection cx) throws SQLException, IOException Throws: SQLException IOException encodeGroupByStatement protected void encodeGroupByStatement(List<Expression> groupByExpressions, StringBuffer sql, FilterToSQL filterToSQL, boolean aggregateOnExpression) Helper method that adds a group by statement to the SQL query. If the list of group by attributes is empty or NULL no group by statement is add. Parameters: attributes - the group by attributes to be encoded sql - the sql query buffer encodeFunction protected void encodeFunction(String function, Expression expression, StringBuffer sql, FilterToSQL filterToSQL) deleteSQL protected String deleteSQL(SimpleFeatureType featureType, Filter filter) throws SQLException Generates a 'DELETE FROM' sql statement. Throws: SQLException deleteSQLPS protected PreparedStatement deleteSQLPS(SimpleFeatureType featureType, Filter filter, Connection cx) throws SQLException Generates a 'DELETE FROM' prepared statement. Throws: SQLException insertSQL protected String insertSQL(SimpleFeatureType featureType, SimpleFeature feature, KeysFetcher keysFetcher, Connection cx) throws SQLException, IOException Generates a 'INSERT INFO' sql statement. Throws: IOException SQLException getColumnNames protected static LinkedHashSet<String> getColumnNames(PrimaryKey key) Returns the set of the primary key column names. The set is guaranteed to have the same iteration order as the primary key. getGeometrySRID protected int getGeometrySRID(Geometry g, AttributeDescriptor descriptor) throws IOException Looks up the geometry srs by trying a number of heuristics. Returns -1 if all attempts at guessing the srid failed. Throws: IOException getGeometryDimension protected int getGeometryDimension(Geometry g, AttributeDescriptor descriptor) throws IOException Looks up the geometry dimension by trying a number of heuristics. Returns 2 if all attempts at guessing the dimension failed. Throws: IOException getDescriptorSRID protected int getDescriptorSRID(AttributeDescriptor descriptor) Extracts the eventual native SRID user property from the descriptor, returns -1 if not found Parameters: descriptor - getDescriptorDimension protected int getDescriptorDimension(AttributeDescriptor descriptor) Extracts the eventual native dimension user property from the descriptor, returns -1 if not found Parameters: descriptor - updateSQL protected String updateSQL(SimpleFeatureType featureType, AttributeDescriptor[] attributes, Object[] values, Filter filter, Set<String> pkColumnNames) throws IOException, SQLException Generates an 'UPDATE' sql statement. Throws: IOException SQLException updateSQLPS protected PreparedStatement updateSQLPS(SimpleFeatureType featureType, AttributeDescriptor[] attributes, Object[] values, Filter filter, Set<String> pkColumnNames, Connection cx) throws IOException, SQLException Generates an 'UPDATE' prepared statement. Throws: IOException SQLException createFilterToSQL public FilterToSQL createFilterToSQL(SimpleFeatureType featureType) Creates a new instance of a filter to sql encoder. The featureType may be null but it is not recommended. Such a case where this may neccessary is when a literal needs to be encoded in isolation. createPreparedFilterToSQL public PreparedFilterToSQL createPreparedFilterToSQL(SimpleFeatureType featureType) Creates a new instance of a filter to sql encoder to be used in a prepared statement. initializeFilterToSQL protected <F extends FilterToSQL> F initializeFilterToSQL(F toSQL, SimpleFeatureType featureType) Helper method to initialize a filter encoder instance. encodeTableName public void encodeTableName(String tableName, StringBuffer sql, Hints hints) throws SQLException Helper method to encode table name which checks if a schema is set and prefixes the table name with it. Throws: SQLException encodeAliasedTableName public void encodeAliasedTableName(String tableName, StringBuffer sql, Hints hints, String alias) throws SQLException Helper method to encode table name which checks if a schema is set and prefixes the table name with it, with the addition of an alias to the name Throws: SQLException encodeTableJoin protected void encodeTableJoin(SimpleFeatureType featureType, JoinInfo join, Query query, StringBuffer sql) throws SQLException Helper method to encode the join clause(s) of a query. Throws: SQLException encodeWhereJoin protected List<FilterToSQL> encodeWhereJoin(SimpleFeatureType featureType, JoinInfo join, StringBuffer sql) throws IOException Throws: IOException setGmlProperties protected void setGmlProperties(Geometry g, String gid, String name, String description) Helper method for setting the gml:id of a geometry as user data. applyLimitOffset public void applyLimitOffset(StringBuffer sql, Query query) Applies the limit/offset elements to the query if they are specified and if the dialect supports them Parameters: sql - The sql to be modified the - query that holds the limit and offset parameters closeSafe public void closeSafe(ResultSet rs) Utility method for closing a result set. This method closed the result set "safely" in that it never throws an exception. Any exceptions that do occur are logged at Level.FINER. Parameters: rs - The result set to close. closeSafe public void closeSafe(Statement st) Utility method for closing a statement. This method closed the statement"safely" in that it never throws an exception. Any exceptions that do occur are logged at Level.FINER. Parameters: st - The statement to close. closeSafe public void closeSafe(Connection cx) Utility method for closing a connection. This method closed the connection "safely" in that it never throws an exception. Any exceptions that do occur are logged at Level.FINER. Parameters: cx - The connection to close. finalize protected void finalize() throws Throwable Overrides: finalize in class Object Throws: Throwable dispose public void dispose() Description copied from interface: DataAccess Disposes of this data store and releases any resource that it is using. A DataStore cannot be used after dispose has been called, neither can any data access object it helped create, such as FeatureReader, FeatureSource or FeatureCollection. This operation can be called more than once without side effects. There is no thread safety assurance associated with this method. For example, client code will have to make sure this method is not called while retrieving/saving data from/to the storage, or be prepared for the consequences. Specified by: dispose in interface DataAccess<SimpleFeatureType,SimpleFeature> Overrides: dispose in class ContentDataStore isGeneralizationRequired protected boolean isGeneralizationRequired(Hints hints, GeometryDescriptor gatt) Checks if geometry generalization required and makes sense Parameters: hints - hints hints passed in gatt - Geometry attribute descriptor Returns: true to indicate generalization isSimplificationRequired protected boolean isSimplificationRequired(Hints hints, GeometryDescriptor gatt) Checks if geometry simplification required and makes sense Parameters: hints - hints hints passed in gatt - Geometry attribute descriptor Returns: true to indicate simplification isGeometryReduceRequired protected boolean isGeometryReduceRequired(Hints hints, GeometryDescriptor gatt, Hints.Key param) Checks if reduction required and makes sense Parameters: hints - hints passed in gatt - Geometry attribute descriptor param - Hints.GEOMETRY_GENERALIZATION or Hints.GEOMETRY_SIMPLIFICATION Returns: true to indicate reducing the geometry, false otherwise encodeGeometryColumn public void encodeGeometryColumn(GeometryDescriptor gatt, StringBuffer sql, Hints hints) Encoding a geometry column with respect to hints Supported Hints are provided by SQLDialect.addSupportedHints(Set) Parameters: gatt - sql - hints - , may be null encodeGeometryColumn protected void encodeGeometryColumn(GeometryDescriptor gatt, String prefix, StringBuffer sql, Hints hints) buildTransaction public Transaction buildTransaction(Connection cx) Builds a transaction object around a user provided connection. The returned transaction allows the store to work against an externally managed transaction, such as in J2EE enviroments. It is the duty of the caller to ensure the connection is to the same database managed by this JDBCDataStore. Calls to Transaction.commit(), Transaction.rollback() and Transaction.close() will not result in corresponding calls to the provided Connection object. Parameters: conn - The externally managed connection createIndex public void createIndex(Index index) throws IOException Creates a new database index Parameters: index - Throws: IOException dropIndex public void dropIndex(String typeName, String indexName) throws IOException Creates a new database index Parameters: index - Throws: IOException getIndexes public List<Index> getIndexes(String typeName) throws IOException Lists all indexes associated to the given feature type Parameters: typeName - Name of the type for which indexes are searched. It's mandatory Returns: Throws: IOException escapeNamePattern public String escapeNamePattern(DatabaseMetaData metaData, String name) throws SQLException Escapes a name pattern used in e.g. DatabaseMetaData.getColumns(String, String, String, String) when passed in argument is an exact name and not a pattern. When a table name or column name contains underscore (or percen, but this is rare) the underscore is treated as a placeholder and not an actual character. So if our intention is to match an exact name, we must escape such characters. Throws: SQLException

Class JDBCDataStore

Dialects

Database Connections

Schemas

Spatial Functions

Field Summary

Fields inherited from class ContentDataStore

Constructor Summary

Method Summary

Methods inherited from class ContentDataStore

Methods inherited from class Object

Field Detail

TRACE_ENABLED

JDBC_NATIVE_SRID

JDBC_READ_ONLY

JDBC_PRIMARY_KEY_COLUMN

JDBC_NATIVE_TYPENAME

JDBC_NATIVE_TYPE

JDBC_COLUMN_ALIAS

GEOMETRY_TABLE

MULTI_GEOMETRY_TABLE

GEOMETRY_ASSOCIATION_TABLE

FEATURE_RELATIONSHIP_TABLE

FEATURE_ASSOCIATION_TABLE

EMPTY_ENVELOPE

MAX_IDS_IN_FILTER

dataSource

dialect

databaseSchema

sqlTypeToClassMappings

sqlTypeNameToClassMappings

classToSqlTypeMappings

sqlTypeToSqlTypeNameOverrides

aggregateFunctions

supportedFunctions

associations

fetchSize

batchInsertSize

exposePrimaryKeyColumns

primaryKeyFinder

virtualTables

connectionLifecycleListeners

callbackFactory

Constructor Detail

JDBCDataStore

Method Detail

setCallbackFactory

getCallbackFactory

getAbsoluteFeatureSource

addVirtualTable

createVirtualTable

getConnectionLifecycleListeners

removeVirtualTable

dropVirtualTable

getVirtualTables

getPrimaryKeyFinder

setPrimaryKeyFinder

getFetchSize

setFetchSize

getBatchInsertSize

setBatchInsertSize

isExposePrimaryKeyColumns

setExposePrimaryKeyColumns

getSQLDialect

setSQLDialect

getDataSource

setDataSource

getDatabaseSchema

setDatabaseSchema

getFilterCapabilities

isAssociations

setAssociations

getSqlTypeToClassMappings

getSqlTypeNameToClassMappings

getClassToSqlTypeMappings

getSqlTypeToSqlTypeNameOverrides

getAggregateFunctions

getSupportedFunctions

getMapping

getMapping