org.geotools.data.complex.filter

Class UnmappingFilterVisitor

Object

UnmappingFilterVisitor

All Implemented Interfaces:

ExpressionVisitor, FilterVisitor

public class UnmappingFilterVisitor
extends Object
implements FilterVisitor, ExpressionVisitor

A Filter visitor that traverse a Filter or Expression made against a complex FeatureType, and that uses the attribute and type mapping information given by a FeatureTypeMapping object to produce an equivalent Filter that operates against the original FeatureType.

Usage:

 <code>
    Filter filterOnTargetType = ...
    FeatureTypeMappings schemaMapping = ....

    UnMappingFilterVisitor visitor = new UnmappingFilterVisitor(schemaMapping);
    Filter filterOnSourceType = (Filter)filterOnTargetType.accept(visitor, null);

 </code>
 

Since:

2.4

Author:

Gabriel Roldan (Axios Engineering), Rini Angreani (CSIRO Earth Science and Resource Engineering)

Field Summary

Fields

Modifier and Type	Field and Description
protected FeatureTypeMapping	mappings

Constructor Summary

Constructors

Constructor and Description
UnmappingFilterVisitor(FeatureTypeMapping mappings) visit(*Expression) holds the unmapped expression here.

Method Summary

Modifier and Type	Method and Description
Object	visit(Add expr, Object arg1)
Object	visit(After after, Object extraData)
Object	visit(And filter, Object arg1)
Object	visit(AnyInteracts anyInteracts, Object extraData)
Object	visit(BBOX filter, Object arg1)
Object	visit(Before before, Object extraData)
Object	visit(Begins begins, Object extraData)
Object	visit(BegunBy begunBy, Object extraData)
Object	visit(Beyond filter, Object arg1)
protected Object	visit(BinaryTemporalOperator filter, Object data)
Object	visit(Contains filter, Object arg1)
Object	visit(Crosses filter, Object arg1)
Object	visit(Disjoint filter, Object arg1)
Object	visit(Divide expr, Object arg1)
Object	visit(During during, Object extraData)
Object	visit(DWithin filter, Object arg1)
Object	visit(EndedBy endedBy, Object extraData)
Object	visit(Ends ends, Object extraData)
Object	visit(Equals filter, Object arg1)
Object	visit(ExcludeFilter filter, Object arg1) Visit Filter.EXCLUDE (often used during data structure transformations).
Object	visit(Function function, Object arg1)
Object	visit(Id filter, Object arg1)
Object	visit(IncludeFilter filter, Object arg1) Visit Filter.INCLUDE (often used during data structure transformations).
Object	visit(Intersects filter, Object arg1)
Object	visit(Literal expr, Object arg1)
Object	visit(Meets meets, Object extraData)
Object	visit(MetBy metBy, Object extraData)
Object	visit(Multiply expr, Object arg1)
Object	visit(NilExpression expr, Object arg1) Used to visit a Expression.NIL, also called for null where an expression is expected.
Object	visit(Not filter, Object arg1)
Object	visit(Or filter, Object arg1)
Object	visit(OverlappedBy overlappedBy, Object extraData)
Object	visit(Overlaps filter, Object arg1)
Object	visit(PropertyIsBetween filter, Object arg1)
Object	visit(PropertyIsEqualTo filter, Object arg1)
Object	visit(PropertyIsGreaterThan filter, Object arg1)
Object	visit(PropertyIsGreaterThanOrEqualTo filter, Object arg1)
Object	visit(PropertyIsLessThan filter, Object arg1)
Object	visit(PropertyIsLessThanOrEqualTo filter, Object arg1)
Object	visit(PropertyIsLike filter, Object arg1)
Object	visit(PropertyIsNil filter, Object extraData)
Object	visit(PropertyIsNotEqualTo filter, Object arg1)
Object	visit(PropertyIsNull filter, Object arg1)
List<Expression>	visit(PropertyName expr, Object arg1)
Object	visit(Subtract expr, Object arg1)
Object	visit(TContains contains, Object extraData)
Object	visit(TEquals equals, Object extraData)
Object	visit(Touches filter, Object arg1)
Object	visit(TOverlaps contains, Object extraData)
Object	visit(Within filter, Object arg1)
Expression[][]	visitBinaryComparisonOperator(BinaryComparisonOperator filter) Returns a CompareFilter of the same type than filter, but built on the unmapped expressions pointing to the surrogate type attributes.
Expression[][]	visitBinaryExpression(BinaryExpression expression)
List<Filter>	visitBinaryLogicOp(BinaryLogicOperator filter)
Expression[][]	visitBinarySpatialOp(BinarySpatialOperator filter)
Object	visitNullFilter(Object arg0) Used to account for a null filter value.

Methods inherited from class Object

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

Methods inherited from interface FilterVisitor

visit

Field Detail

mappings

protected FeatureTypeMapping mappings

Constructor Detail

UnmappingFilterVisitor

public UnmappingFilterVisitor(FeatureTypeMapping mappings)

visit(*Expression) holds the unmapped expression here. Package visible just for unit tests

Method Detail

visitBinaryComparisonOperator

public Expression[][] visitBinaryComparisonOperator(BinaryComparisonOperator filter)

Returns a CompareFilter of the same type than filter, but built on the unmapped expressions pointing to the surrogate type attributes.

Returns:

the scalar product of the evaluation of both expressions

visitBinarySpatialOp

public Expression[][] visitBinarySpatialOp(BinarySpatialOperator filter)

visitBinaryLogicOp

public List<Filter> visitBinaryLogicOp(BinaryLogicOperator filter)

visitBinaryExpression

public Expression[][] visitBinaryExpression(BinaryExpression expression)

visit

public Object visit(ExcludeFilter filter,
                    Object arg1)

Description copied from interface: FilterVisitor

Visit Filter.EXCLUDE (often used during data structure transformations).

Specified by:

visit in interface FilterVisitor

Parameters:

filter - Filter.EXCLUDE.

arg1 - Value object provided to visitor

Returns:

subclass supplied

visit

public Object visit(IncludeFilter filter,
                    Object arg1)

Description copied from interface: FilterVisitor

Visit Filter.INCLUDE (often used during data structure transformations).

Specified by:

visit in interface FilterVisitor

Parameters:

filter - Filter.INCLUDE.

arg1 - Value object provided to visitor

Returns:

subclass supplied

visit

public Object visit(And filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Id filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Not filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Or filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(PropertyIsBetween filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(PropertyIsEqualTo filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(PropertyIsNotEqualTo filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(PropertyIsGreaterThan filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(PropertyIsGreaterThanOrEqualTo filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(PropertyIsLessThan filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(PropertyIsLessThanOrEqualTo filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(PropertyIsLike filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(PropertyIsNull filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(PropertyIsNil filter,
                    Object extraData)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(BBOX filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Beyond filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Contains filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Crosses filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Disjoint filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(DWithin filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Equals filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Intersects filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Overlaps filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Touches filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visit

public Object visit(Within filter,
                    Object arg1)

Specified by:

visit in interface FilterVisitor

visitNullFilter

public Object visitNullFilter(Object arg0)

Description copied from interface: FilterVisitor

Used to account for a null filter value.

This is particularly used during data structure transofrmations, however the use of null is not recommended. Please make use of Filter.NONE and Filter.ALL as placeholder objects that communicate intent.

Specified by:

visitNullFilter in interface FilterVisitor

Parameters:

arg0 - Value object provided to visitor

Returns:

subclass defined

visit

public Object visit(NilExpression expr,
                    Object arg1)

Description copied from interface: ExpressionVisitor

Used to visit a Expression.NIL, also called for null where an expression is expected.

This is particularly useful when doing data transformations, as an example when using a StyleSymbolizer Expression.NIL can be used to represent the default stroke color.

Specified by:

visit in interface ExpressionVisitor

Returns:

implementation specific

visit

public Object visit(Add expr,
                    Object arg1)

Specified by:

visit in interface ExpressionVisitor

visit

public Object visit(Divide expr,
                    Object arg1)

Specified by:

visit in interface ExpressionVisitor

visit

public Object visit(Function function,
                    Object arg1)

Specified by:

visit in interface ExpressionVisitor

visit

public Object visit(Literal expr,
                    Object arg1)

Specified by:

visit in interface ExpressionVisitor

visit

public Object visit(Multiply expr,
                    Object arg1)

Specified by:

visit in interface ExpressionVisitor

visit

public List<Expression> visit(PropertyName expr,
                              Object arg1)

Specified by:

visit in interface ExpressionVisitor

visit

public Object visit(Subtract expr,
                    Object arg1)

Specified by:

visit in interface ExpressionVisitor

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)