org.geotools.data.gen

Class PreGeneralizedSimpleFeature

Object

PreGeneralizedSimpleFeature

All Implemented Interfaces:

Attribute, ComplexAttribute, Feature, Property, SimpleFeature

public class PreGeneralizedSimpleFeature
extends Object
implements SimpleFeature

Author:

Christian Mueller

Decorator Class for Simple Feature objects having pregeneralized geometries

This feature object is read only, modifying calls result in a UnsupportedOperationException

The special thing is that a generalized geometry is returned.

Constructor Summary

Constructors

Constructor and Description
PreGeneralizedSimpleFeature(SimpleFeatureType featureTyp, int[] indexMapping, SimpleFeature feature, String geomPropertyName, String backendGeomPropertyName)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
Object	getAttribute(int index) Gets an attribute value by index.
Object	getAttribute(Name name) Gets an attribute value by name.
Object	getAttribute(String attrName) Gets an attribute value by name.
int	getAttributeCount() The number of attributes the feature is composed of.
List<Object>	getAttributes() Returns a list of the values of the attributes contained by the feature.
BoundingBox	getBounds() The bounds of this Feature, if available.
Object	getDefaultGeometry() Returns the value of the default geometry of the feature.
GeometryAttribute	getDefaultGeometryProperty() The default geometric attribute of the feature.
AttributeDescriptor	getDescriptor() Override of Property.getDescriptor() which type narrows to AttributeDescriptor.
SimpleFeatureType	getFeatureType() The type of the feature.
String	getID() Unique Identifier for the SimpleFeature This value is non-null and should be the same as getIdentifier().toString().
FeatureId	getIdentifier() A unique identifier for the feature.
Name	getName() The name of the property with respect to its descriptor.
Collection<Property>	getProperties() Complete collection of properties.
Collection<Property>	getProperties(Name name) Returns a subset of the properties of the complex attribute which match the specified name.
Collection<Property>	getProperties(String name) Returns a subset of the properties of the complex attribute which match the specified name.
Property	getProperty(Name name) Returns single property of the complex attribute which matches the specified name.
Property	getProperty(String name) Returns single property of the complex attribute which matches the specified name.
SimpleFeatureType	getType() Override and type narrow to SimpleFeatureType.
Map<Object,Object>	getUserData() A map of "user data" which enables applications to store "application-specific" information against a property.
Collection<? extends Property>	getValue() Override of Property.getValue() which returns the collection of Property which make up the value of the complex attribute.
int	hashCode()
boolean	isNillable() Flag indicating if null is an acceptable value for the property.
void	setAttribute(int arg0, Object arg1) Sets an attribute value by index.
void	setAttribute(Name arg0, Object arg1) Sets an attribute value by name.
void	setAttribute(String arg0, Object arg1) Sets an attribute value by name.
void	setAttributes(List<Object> arg0) Sets the values of the attributes contained by the feature.
void	setAttributes(Object[] arg0) Sets the values of the attributes contained by the feature.
void	setDefaultGeometry(Object arg0) Sets the value of the default geometry for the feature.
void	setDefaultGeometryProperty(GeometryAttribute arg0) Sets the default geometric attribute of the feature.
void	setValue(Collection<Property> arg0) Sets the contained properties of the complex attribute.
void	setValue(Object arg0) Sets the value or content of the property.
void	validate() Check the properties against the constraints provided by their AttributeDescriptors.

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PreGeneralizedSimpleFeature

public PreGeneralizedSimpleFeature(SimpleFeatureType featureTyp,
                                   int[] indexMapping,
                                   SimpleFeature feature,
                                   String geomPropertyName,
                                   String backendGeomPropertyName)

Method Detail

getAttribute

public Object getAttribute(String attrName)

Description copied from interface: SimpleFeature

Gets an attribute value by name.

This method is a convenience for:

 Property p = getProperty( name );
 return p.getValue();
 

Specified by:

getAttribute in interface SimpleFeature

Parameters:

attrName - The name of the attribute whose value to retrieve.

Returns:

The attribute value, or null if no such attribute exists with the specified name.

getAttribute

public Object getAttribute(Name name)

Description copied from interface: SimpleFeature

Gets an attribute value by name.

This method is a convenience for:

 Property p = getProperty( name );
 return p.getValue();
 

Since attribute names in simple features do not have a namespace uri this method is equivalent to calling getAttribute(name.getLocalPart()).

Specified by:

getAttribute in interface SimpleFeature

Parameters:

name - The name of the attribute whose value to retrieve.

Returns:

The attribute value, or null if no such attribute exists with the specified name.

getAttribute

public Object getAttribute(int index)
                    throws IndexOutOfBoundsException

Description copied from interface: SimpleFeature

Gets an attribute value by index.

This method is a convenience for:

 Property p = ((List)getProperties()).get( i ) ;
 return p.getValue();
 

Specified by:

getAttribute in interface SimpleFeature

Parameters:

index - The index of the attribute whose value to get.

Returns:

The attribute value at the specified index.

Throws:

IndexOutOfBoundsException - If the specified index is out of bounds.

getAttributeCount

public int getAttributeCount()

Description copied from interface: SimpleFeature

The number of attributes the feature is composed of.

This is a convenience for:

   return getAttributes().size();
 

Specified by:

getAttributeCount in interface SimpleFeature

Returns:

Number of attributes of the feature.

getAttributes

public List<Object> getAttributes()

Description copied from interface: SimpleFeature

Returns a list of the values of the attributes contained by the feature.

This method is a convenience for:

 List values = new ArrayList();
 for ( Property p : getProperties(); ) {
   values.add( p.getValue() );
 }

 return values;
 

Specified by:

getAttributes in interface SimpleFeature

Returns:

List of attribute values for the feature.

getDefaultGeometry

public Object getDefaultGeometry()

Description copied from interface: SimpleFeature

Returns the value of the default geometry of the feature.

This method is convenience for:

 return getDefaultGeometryProperty().getValue();
 

Specified by:

getDefaultGeometry in interface SimpleFeature

Returns:

The default geometry, or null if no default geometry attribute exists.

getFeatureType

public SimpleFeatureType getFeatureType()

Description copied from interface: SimpleFeature

The type of the feature.

This method is a synonym for SimpleFeature.getType().

Specified by:

getFeatureType in interface SimpleFeature

See Also:

SimpleFeature.getType()

getID

public String getID()

Description copied from interface: SimpleFeature

Unique Identifier for the SimpleFeature

This value is non-null and should be the same as getIdentifier().toString(). Please note that an ID may be provided

Specified by:

getID in interface SimpleFeature

Returns:

A unique identifier for the attribute, or null if the attribute is non-identifiable.

getType

public SimpleFeatureType getType()

Description copied from interface: SimpleFeature

Override and type narrow to SimpleFeatureType.

Specified by:

getType in interface Attribute

Specified by:

getType in interface ComplexAttribute

Specified by:

getType in interface Feature

Specified by:

getType in interface Property

Specified by:

getType in interface SimpleFeature

Returns:

The feature type

See Also:

Attribute.getType()

setAttribute

public void setAttribute(String arg0,
                         Object arg1)

Description copied from interface: SimpleFeature

Sets an attribute value by name.

This method is a convenience for:

 Property p = getProperty( name );
 p.setValue(value);
 

Specified by:

setAttribute in interface SimpleFeature

Parameters:

arg0 - The name of the attribute whose value to set.

arg1 - The new value of the attribute.

setAttribute

public void setAttribute(Name arg0,
                         Object arg1)

Description copied from interface: SimpleFeature

Sets an attribute value by name.

This method is a convenience for:

 Property p = getProperty( name );
 p.setValue(value);
 

Since attribute names in simple features do not have a namespace uri this method is equivalent to calling setAttribute(name.getLocalPart(), value).

Specified by:

setAttribute in interface SimpleFeature

Parameters:

arg0 - The name of the attribute whose value to set.

arg1 - The new value of the attribute.

setAttribute

public void setAttribute(int arg0,
                         Object arg1)
                  throws IndexOutOfBoundsException

Description copied from interface: SimpleFeature

Sets an attribute value by index.

This method is a convenience for:

 Property p = ((List)getProperties()).get( i ) ;
 p.setValue(value);
 

Specified by:

setAttribute in interface SimpleFeature

Parameters:

arg0 - The index of the attribute whose value to set.

arg1 - The new value of the attribute.

Throws:

IndexOutOfBoundsException - If the specified index is out of bounds.

setAttributes

public void setAttributes(List<Object> arg0)

Description copied from interface: SimpleFeature

Sets the values of the attributes contained by the feature.

The values must be in the order of the attributes defined by the feature type.

This method is a convenience for:

 int i = 0;
 for ( Property p : getProperties() ) {
   p.setValue( values.get( i++ ) );
 }
 

Specified by:

setAttributes in interface SimpleFeature

Parameters:

arg0 - The attribute values to set.

setAttributes

public void setAttributes(Object[] arg0)

Description copied from interface: SimpleFeature

Sets the values of the attributes contained by the feature.

The values must be in the order of the attributes defined by the feature type.

This method is a convenience for:

 for ( Property p : getProperties() ) {
   p.setValue( values[i] );
 }
 

Specified by:

setAttributes in interface SimpleFeature

Parameters:

arg0 - The attribute values to set.

setDefaultGeometry

public void setDefaultGeometry(Object arg0)

Description copied from interface: SimpleFeature

Sets the value of the default geometry for the feature.

This method is convenience for:

 getDefaultGeometryProperty().setValue(geometry);
 

Specified by:

setDefaultGeometry in interface SimpleFeature

Parameters:

arg0 - The new default geometry value.

getBounds

public BoundingBox getBounds()

Description copied from interface: Feature

The bounds of this Feature, if available.

This value is derived from any geometric attributes that the feature is composed of.

In the case that the feature has no geometric attributes this method should return an empty bounds, ie, bounds.isEmpty() == true. This method should never return null.

The coordinate reference system of the returned bounds is derived from the geometric attributes which were used to compute the bounds. In the event that the feature contains multiple geometric attributes which have different crs's, the one defined by #getGeometryDescriptor() should take precedence and the others should be reprojected accordingly.

Specified by:

getBounds in interface Feature

Returns:

the feature bounds, possibly empty.

getDefaultGeometryProperty

public GeometryAttribute getDefaultGeometryProperty()

Description copied from interface: Feature

The default geometric attribute of the feature.

This method returns null in the case where no such attribute exists.

Specified by:

getDefaultGeometryProperty in interface Feature

Returns:

The default geometry attribute, or null.

getIdentifier

public FeatureId getIdentifier()

Description copied from interface: Feature

A unique identifier for the feature.

getType().isIdentifiable() must return true so this value must not return null.

Generation of the identifier is dependent on the underlying data storage medium. Often this identifier is not persistent. Mediums such shapefiles and database tables have "keys" built in which map naturally to persistent feature identifiers. But other mediums do not have such keys and may have to generate feature identifiers "on-the-fly". This means that client code being able to depend on this value as a persistent entity is dependent on which storage medium or data source is being used.

Specified by:

getIdentifier in interface Attribute

Specified by:

getIdentifier in interface Feature

Returns:

The feature identifier, never null.

setDefaultGeometryProperty

public void setDefaultGeometryProperty(GeometryAttribute arg0)

Description copied from interface: Feature

Sets the default geometric attribute of the feature.

This value must be an attribute which is already defined for the feature. In other words, this method can not be used to add a new attribute to the feature.

Specified by:

setDefaultGeometryProperty in interface Feature

Parameters:

arg0 - The new geomtric attribute.

getProperties

public Collection<Property> getProperties()

Description copied from interface: ComplexAttribute

Complete collection of properties.

This method is a convenience method for calling (Collection) getValue().

Specified by:

getProperties in interface ComplexAttribute

Returns:

The complete collection of properties.

getProperties

public Collection<Property> getProperties(Name name)

Description copied from interface: ComplexAttribute

Returns a subset of the properties of the complex attribute which match the specified name.

The name parameter is matched against each contained Property.getName(), those that are equal are returned.

Specified by:

getProperties in interface ComplexAttribute

Parameters:

name - The name of the properties to return.

Returns:

The collection of properties which match the specified name, or an empty collection if no such properties match.

getProperties

public Collection<Property> getProperties(String name)

Description copied from interface: ComplexAttribute

Returns a subset of the properties of the complex attribute which match the specified name.

This method is a convenience for ComplexAttribute.getProperties(Name) in which Name.getNamespaceURI() is null.

Note: Special care should be taken when using this method in the case that two properties with the same local name but different namespace uri exist. For this reason using ComplexAttribute.getProperties(Name) is safer.

Specified by:

getProperties in interface ComplexAttribute

Parameters:

name - The local name of the properties to return.

Returns:

The collection of properties which match the specified name, or an empty collection if no such properties match.

See Also:

ComplexAttribute.getProperties(Name)

getProperty

public Property getProperty(Name name)

Description copied from interface: ComplexAttribute

Returns single property of the complex attribute which matches the specified name.

Note: This method is a convenience and care should be taken when calling it if more then a single property matches name. In such a case the first encountered property in which Property.getName() is equal to name is returned, and no order is guaranteed.

This method is a safe convenience for: getProperties(name).iterator().next().

In the event that no property matches the specified name null is returned.

Specified by:

getProperty in interface ComplexAttribute

Parameters:

name - The name of the property to return.

Returns:

The property matching the specified name, or null.

getProperty

public Property getProperty(String name)

Description copied from interface: ComplexAttribute

Returns single property of the complex attribute which matches the specified name.

This method is a convenience for ComplexAttribute.getProperty(Name) in which Name.getNamespaceURI() is null.

Note: This method is a convenience and care should be taken when calling it if more then a single property matches name. In such a case the first encountered property in which Property.getName() is matches name is returned, and no order is guaranteed.

Note: Special care should be taken when using this method in the case that two properties with the same local name but different namespace uri exist. For this reason using ComplexAttribute.getProperties(Name) is safer.

Specified by:

getProperty in interface ComplexAttribute

Parameters:

name - The local name of the property to return.

Returns:

The property matching the specified name, or null.

getValue

public Collection<? extends Property> getValue()

Description copied from interface: ComplexAttribute

Override of Property.getValue() which returns the collection of Property which make up the value of the complex attribute.

Specified by:

getValue in interface ComplexAttribute

Specified by:

getValue in interface Property

Returns:

The value of the property.

setValue

public void setValue(Collection<Property> arg0)

Description copied from interface: ComplexAttribute

Sets the contained properties of the complex attribute.

The values should match the structure defined by getDescriptor().

Specified by:

setValue in interface ComplexAttribute

validate

public void validate()
              throws IllegalAttributeException

Description copied from interface: ComplexAttribute

Check the properties against the constraints provided by their AttributeDescriptors.

Please note this method checks minOccurs and maxOccurs information; and calls each Attribute.validate on each entry in turn (in order to check isNillable, binding and restrictions).

Specified by:

validate in interface Attribute

Specified by:

validate in interface ComplexAttribute

Throws:

IllegalAttributeException - If any attribute fails validation

getDescriptor

public AttributeDescriptor getDescriptor()

Description copied from interface: Attribute

Override of Property.getDescriptor() which type narrows to AttributeDescriptor.

Specified by:

getDescriptor in interface Attribute

Specified by:

getDescriptor in interface Property

Returns:

The attribute descriptor, may be null if this is a top level type

See Also:

Property.getDescriptor()

getName

public Name getName()

Description copied from interface: Property

The name of the property with respect to its descriptor.

This method is convenience for getDescriptor().getName().

Specified by:

getName in interface Property

Returns:

name of the property.

getUserData

public Map<Object,Object> getUserData()

Description copied from interface: Property

A map of "user data" which enables applications to store "application-specific" information against a property.

An example of information that may wish to be stored along with an attribute could be its srs information (in the case of a geometric attribute ).

 
  GeometryAttribute attribute = ...;

  //set the crs
  CoordinateReferenceSystem crs = CRS.decode("EPSG:4326");
  attribute.setCRS( crs );

  //set the srs
  attribute.getUserData().put( "srs", "EPSG:4326" );
 
 

Specified by:

getUserData in interface Property

Returns:

A map of user data.

isNillable

public boolean isNillable()

Description copied from interface: Property

Flag indicating if null is an acceptable value for the property.

This method is convenience for getDescriptor().isNillable().

Specified by:

isNillable in interface Property

Returns:

true if the value of the property is allowed to be null, otherwise false.

setValue

public void setValue(Object arg0)

Description copied from interface: Property

Sets the value or content of the property.

The class of newValue should be the same as or a subclass of getType().getBinding().

newValue may be null if getDescriptor().isNillable() is true.

Specified by:

setValue in interface Property

Parameters:

arg0 - The new value of the property.

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object