org.geotools.data.mongodb.complex

Class JsonSelectFunction

Object

ExpressionAbstract

DefaultExpression

FunctionExpressionImpl

JsonSelectFunction

All Implemented Interfaces:

FunctionExpression, Factory, Expression, Function, PropertyName

public final class JsonSelectFunction
extends FunctionExpressionImpl
implements PropertyName

Function that selects a JSON object using a JSON path. This function implements the PropertyName interface for compatibility with the filtering processing stack.

Field Summary

Fields inherited from class FunctionExpressionImpl

fallback, functionName, name, params

Fields inherited from interface Expression

NIL

Constructor Summary

Constructors

Constructor and Description
JsonSelectFunction()

Method Summary

Modifier and Type	Method and Description
Object	accept(ExpressionVisitor visitor, Object extraData) Accepts a visitor.
Object	evaluate(Object object) Evaluates this function against the provided object.
String	getJsonPath() Returns the JSON path to be selected.
NamespaceSupport	getNamespaceContext() Returns namespace context information, or null if unavailable/inapplicable
String	getPropertyName() Returns the name of the property whose value will be returned by the evaluate method.

Methods inherited from class FunctionExpressionImpl

equals, functionName, getExpression, getFallbackValue, getFunctionName, getImplementationHints, getName, getParameters, hashCode, setFallbackValue, setParameters, toString

Methods inherited from class DefaultExpression

isAttributeExpression, isExpression, isFunctionExpression, isGeometryExpression, isLiteralExpression, isMathExpression

Methods inherited from class ExpressionAbstract

evaluate

Methods inherited from class Object

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

Methods inherited from interface Expression

evaluate

Constructor Detail

JsonSelectFunction

public JsonSelectFunction()

Method Detail

evaluate

public Object evaluate(Object object)

Evaluates this function against the provided object. If a NULL object is provided and attribute expression will be returned.

Specified by:

evaluate in interface Expression

Overrides:

evaluate in class FunctionExpressionImpl

Returns:

default implementation returns null

getJsonPath

public String getJsonPath()

Returns the JSON path to be selected.

getPropertyName

public String getPropertyName()

Description copied from interface: PropertyName

Returns the name of the property whose value will be returned by the evaluate method.

Specified by:

getPropertyName in interface PropertyName

getNamespaceContext

public NamespaceSupport getNamespaceContext()

Description copied from interface: PropertyName

Returns namespace context information, or null if unavailable/inapplicable

Specified by:

getNamespaceContext in interface PropertyName

Returns:

namespace context information, or null if unavailable/inapplicable

accept

public Object accept(ExpressionVisitor visitor,
                     Object extraData)

Description copied from interface: Expression

Accepts a visitor. Subclasses must implement with a method whose content is the following:

return visitor.visit(this, extraData);

Specified by:

accept in interface Expression

Overrides:

accept in class FunctionExpressionImpl

See Also:

Expression.accept(ExpressionVisitor, Object)