Package org.geotools.filter.visitor

Class AbstractFilterVisitor

Object

AbstractFilterVisitor

All Implemented Interfaces:

FilterVisitor

public class AbstractFilterVisitor
extends Object
implements FilterVisitor

Base implementation of the FilterVisitor used for inorder traversal of expressions.

This class implements the full FilterVisitor interface and will visit every member of a Filter object. This class performs no actions and is not intended to be used directly, instead extend it and overide the methods for the expression types you are interested in. Remember to call the super method if you want to ensure that the entire filter tree is still visited.

You may still need to implement FilterVisitor directly if the visit order set out in this class does not meet your needs. This class visits in sequence i.e. Left - Middle - Right for all expressions which have sub-expressions.

Author:

James Macgill, Penn State, Justin Deoliveira, The Open Planning Project

Constructor Summary

Constructors

Constructor	Description
AbstractFilterVisitor()	Empty constructor
AbstractFilterVisitor(ExpressionVisitor expressionVisitor)	Constructs the filter visitor with an expression visitor.

Method Summary

Modifier and Type	Method	Description
String	toString()
Object	visit(And filter, Object data)	Visits elements of filter.getChildren().
protected Object	visit(BinaryComparisonOperator filter, Object data)	Visits filter.getExpression1(), and filter.getExpression2() if an expression visitor was set.
protected Object	visit(BinaryLogicOperator filter, Object data)	Visits elements of filter.getChildren().
Object	visit(ExcludeFilter filter, Object data)	Does nothing; will return provided data unmodified.
Object	visit(Id filter, Object data)	Does nothing.
Object	visit(IncludeFilter filter, Object data)	Does nothing; will return provided data unmodified.
Object	visit(NativeFilter filter, Object extraData)
Object	visit(Not filter, Object data)	Visits filter.getFilter().
Object	visit(Or filter, Object data)	Visits elements of filter.getChildren().
Object	visit(PropertyIsBetween filter, Object data)	Visits filter.getLowerBoundary(),filter.getExpression(),filter.getUpperBoundary() if an expression visitor was set.
Object	visit(PropertyIsEqualTo filter, Object data)	Visits filter.getExpression1(), and filter.getExpression2() if an expression visitor was set.
Object	visit(PropertyIsGreaterThanOrEqualTo filter, Object data)	Visits filter.getExpression1(), and filter.getExpression2() if an expression visitor was set.
Object	visit(PropertyIsGreaterThan filter, Object data)	Visits filter.getExpression1(), and filter.getExpression2() if an expression visitor was set.
Object	visit(PropertyIsLessThanOrEqualTo filter, Object data)	Visits filter.getExpression1(), and filter.getExpression2() if an expression visitor was set.
Object	visit(PropertyIsLessThan filter, Object data)	Visits filter.getExpression1(), and filter.getExpression2() if an expression visitor was set.
Object	visit(PropertyIsLike filter, Object data)	Visits filter.getExpression() if an expression visitor was set.
Object	visit(PropertyIsNil filter, Object extraData)	Visits filter.getExpression() if an expression visitor was set.
Object	visit(PropertyIsNotEqualTo filter, Object data)	Visits filter.getExpression1(), and filter.getExpression2() if an expression visitor was set.
Object	visit(PropertyIsNull filter, Object data)	Visits filter.getExpression() if an expression visitor was set.
Object	visit(BBOX filter, Object data)	does nothing
Object	visit(Beyond filter, Object data)	Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.
protected Object	visit(BinarySpatialOperator filter, Object data)	Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.
Object	visit(Contains filter, Object data)	Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.
Object	visit(Crosses filter, Object data)	Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.
Object	visit(Disjoint filter, Object data)	Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.
Object	visit(DWithin filter, Object data)	Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.
Object	visit(Equals filter, Object data)	Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.
Object	visit(Intersects filter, Object data)	Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.
Object	visit(Overlaps filter, Object data)	Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.
Object	visit(Touches filter, Object data)	Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.
Object	visit(Within filter, Object data)	Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.
Object	visit(After after, Object extraData)
Object	visit(AnyInteracts anyInteracts, Object extraData)
Object	visit(Before before, Object extraData)
Object	visit(Begins begins, Object extraData)
Object	visit(BegunBy begunBy, Object extraData)
protected Object	visit(BinaryTemporalOperator filter, Object data)
Object	visit(During during, Object extraData)
Object	visit(EndedBy endedBy, Object extraData)
Object	visit(Ends ends, Object extraData)
Object	visit(Meets meets, Object extraData)
Object	visit(MetBy metBy, Object extraData)
Object	visit(OverlappedBy overlappedBy, Object extraData)
Object	visit(TContains contains, Object extraData)
Object	visit(TEquals equals, Object extraData)
Object	visit(TOverlaps contains, Object extraData)
Object	visitNullFilter(Object data)	Does nothing.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

AbstractFilterVisitor

public AbstractFilterVisitor()

Empty constructor

AbstractFilterVisitor

public AbstractFilterVisitor(ExpressionVisitor expressionVisitor)

Constructs the filter visitor with an expression visitor.

Using this constructor allows expressions of a filter to be visited as well.

Method Detail

visit

public Object visit(IncludeFilter filter,
                    Object data)

Does nothing; will return provided data unmodified.

Specified by:

visit in interface FilterVisitor

Parameters:

filter - Filter.INCLUDE.

data - Value object provided to visitor

Returns:

subclass supplied

visit

public Object visit(ExcludeFilter filter,
                    Object data)

Does nothing; will return provided data unmodified.

Specified by:

visit in interface FilterVisitor

Parameters:

filter - Filter.EXCLUDE.

data - Value object provided to visitor

Returns:

subclass supplied

visitNullFilter

public Object visitNullFilter(Object data)

Does nothing.

Specified by:

visitNullFilter in interface FilterVisitor

Parameters:

data - Value object provided to visitor

Returns:

subclass defined

visit

public Object visit(PropertyIsBetween filter,
                    Object data)

Visits filter.getLowerBoundary(),filter.getExpression(),filter.getUpperBoundary() if an expression visitor was set.

Specified by:

visit in interface FilterVisitor

visit

protected Object visit(BinaryComparisonOperator filter,
                       Object data)

Visits filter.getExpression1(), and filter.getExpression2() if an expression visitor was set.

visit

public Object visit(PropertyIsEqualTo filter,
                    Object data)

Visits filter.getExpression1(), and filter.getExpression2() if an expression visitor was set.

Specified by:

visit in interface FilterVisitor

visit

public Object visit(PropertyIsNotEqualTo filter,
                    Object data)

Visits filter.getExpression1(), and filter.getExpression2() if an expression visitor was set.

Specified by:

visit in interface FilterVisitor

visit

public Object visit(PropertyIsLessThan filter,
                    Object data)

Visits filter.getExpression1(), and filter.getExpression2() if an expression visitor was set.

Specified by:

visit in interface FilterVisitor

visit

public Object visit(PropertyIsLessThanOrEqualTo filter,
                    Object data)

Visits filter.getExpression1(), and filter.getExpression2() if an expression visitor was set.

Specified by:

visit in interface FilterVisitor

visit

public Object visit(PropertyIsGreaterThan filter,
                    Object data)

Visits filter.getExpression1(), and filter.getExpression2() if an expression visitor was set.

Specified by:

visit in interface FilterVisitor

visit

public Object visit(PropertyIsGreaterThanOrEqualTo filter,
                    Object data)

Visits filter.getExpression1(), and filter.getExpression2() if an expression visitor was set.

Specified by:

visit in interface FilterVisitor

visit

public Object visit(BBOX filter,
                    Object data)

does nothing

Specified by:

visit in interface FilterVisitor

visit

protected Object visit(BinarySpatialOperator filter,
                       Object data)

Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.

visit

public Object visit(Beyond filter,
                    Object data)

Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Contains filter,
                    Object data)

Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Crosses filter,
                    Object data)

Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Disjoint filter,
                    Object data)

Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.

Specified by:

visit in interface FilterVisitor

visit

public Object visit(DWithin filter,
                    Object data)

Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Equals filter,
                    Object data)

Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Intersects filter,
                    Object data)

Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Overlaps filter,
                    Object data)

Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Touches filter,
                    Object data)

Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Within filter,
                    Object data)

Visits filter.getExpression1(),filter.getExpression2() if an expression visitor has been set.

Specified by:

visit in interface FilterVisitor

visit

public Object visit(PropertyIsLike filter,
                    Object data)

Visits filter.getExpression() if an expression visitor was set.

Specified by:

visit in interface FilterVisitor

visit

protected Object visit(BinaryLogicOperator filter,
                       Object data)

Visits elements of filter.getChildren().

visit

public Object visit(And filter,
                    Object data)

Visits elements of filter.getChildren().

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Or filter,
                    Object data)

Visits elements of filter.getChildren().

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Not filter,
                    Object data)

Visits filter.getFilter().

Specified by:

visit in interface FilterVisitor

visit

public Object visit(PropertyIsNull filter,
                    Object data)

Visits filter.getExpression() if an expression visitor was set.

Specified by:

visit in interface FilterVisitor

visit

public Object visit(PropertyIsNil filter,
                    Object extraData)

Visits filter.getExpression() if an expression visitor was set.

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Id filter,
                    Object data)

Does nothing.

Specified by:

visit in interface FilterVisitor

visit

public Object visit(After after,
                    Object extraData)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(AnyInteracts anyInteracts,
                    Object extraData)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Before before,
                    Object extraData)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Begins begins,
                    Object extraData)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(BegunBy begunBy,
                    Object extraData)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(During during,
                    Object extraData)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(EndedBy endedBy,
                    Object extraData)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Ends ends,
                    Object extraData)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Meets meets,
                    Object extraData)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(MetBy metBy,
                    Object extraData)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(OverlappedBy overlappedBy,
                    Object extraData)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(TContains contains,
                    Object extraData)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(TEquals equals,
                    Object extraData)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(TOverlaps contains,
                    Object extraData)

Specified by:

visit in interface FilterVisitor

visit

protected Object visit(BinaryTemporalOperator filter,
                       Object data)

toString

public String toString()

Overrides:

toString in class Object

visit

public Object visit(NativeFilter filter,
                    Object extraData)

Specified by:

visit in interface FilterVisitor