Package org.geotools.filter

Class BinaryComparisonAbstract

Object

FilterAbstract

AbstractFilter

BinaryComparisonAbstract

All Implemented Interfaces:

Filter, MultiValuedFilter, FilterType

Direct Known Subclasses:

CompareFilterImpl, GeometryFilterImpl

public abstract class BinaryComparisonAbstract
extends AbstractFilter
implements MultiValuedFilter

Abstract implementation for binary filters.

This implementation gathers up expression1, expression2 and match action support.

For the SAX parsers setExpression1 and setExpression2 can be used to fill in the filter after creation. Everyone else is asked to treat the filter as immutable and use the appropriate FilterFactory creation method.

Author:

Justin Deoliveira (Boundless)

Nested Class Summary

Nested classes/interfaces inherited from interface MultiValuedFilter

MultiValuedFilter.MatchAction

Field Summary

Fields

Modifier and Type	Field	Description
protected Expression	expression1
protected Expression	expression2

Fields inherited from class AbstractFilter

LOGGER

Fields inherited from interface Filter

EXCLUDE, INCLUDE

Fields inherited from interface FilterType

ALL, BETWEEN, COMPARE_EQUALS, COMPARE_GREATER_THAN, COMPARE_GREATER_THAN_EQUAL, COMPARE_LESS_THAN, COMPARE_LESS_THAN_EQUAL, COMPARE_NOT_EQUALS, FID, GEOMETRY_BBOX, GEOMETRY_BEYOND, GEOMETRY_CONTAINS, GEOMETRY_CROSSES, GEOMETRY_DISJOINT, GEOMETRY_DWITHIN, GEOMETRY_EQUALS, GEOMETRY_INTERSECTS, GEOMETRY_OVERLAPS, GEOMETRY_TOUCHES, GEOMETRY_WITHIN, LIKE, LOGIC_AND, LOGIC_NOT, LOGIC_OR, NONE, NULL

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	BinaryComparisonAbstract()	No argument constructor for use by SAX parsers.
protected	BinaryComparisonAbstract(Expression expression1, Expression expression2)	Immutable constructor for use by FilterFactory
protected	BinaryComparisonAbstract(Expression expression1, Expression expression2, boolean matchingCase)	Immutable constructor for use by FilterFactory

Method Summary

Modifier and Type	Method	Description
protected Comparable	comparable(Object value)	Wraps an object in a Comparable.
protected Object[]	eval(Object object)	Convenience method which evaluates the expressions and trys to align the values to be of the same type.
protected Object[]	eval(Object v1, Object v2)	Convenience method which evaluates the expressions and trys to align the values to be of the same type.
Expression	getExpression1()
Expression	getExpression2()
MultiValuedFilter.MatchAction	getMatchAction()	* Flag Controlling MatchAction property When one or more of the operands evaluates to multiple values rather than a single value, which action should be taken?
boolean	isMatchingCase()
void	setExpression1(Expression expression)
void	setExpression2(Expression expression)

Methods inherited from class AbstractFilter

isCompareFilter, isGeometryDistanceFilter, isGeometryFilter, isLogicFilter, isMathFilter, isSimpleFilter

Methods inherited from class FilterAbstract

accepts, eval, eval

Methods inherited from class Object

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

Methods inherited from interface Filter

accept, evaluate

Field Detail

expression1

protected Expression expression1

expression2

protected Expression expression2

Constructor Detail

BinaryComparisonAbstract

protected BinaryComparisonAbstract()

No argument constructor for use by SAX parsers.

BinaryComparisonAbstract

protected BinaryComparisonAbstract(Expression expression1,
                                   Expression expression2)

Immutable constructor for use by FilterFactory

BinaryComparisonAbstract

protected BinaryComparisonAbstract(Expression expression1,
                                   Expression expression2,
                                   boolean matchingCase)

Immutable constructor for use by FilterFactory

Method Detail

getExpression1

public Expression getExpression1()

setExpression1

public void setExpression1(Expression expression)

getExpression2

public Expression getExpression2()

setExpression2

public void setExpression2(Expression expression)

isMatchingCase

public boolean isMatchingCase()

getMatchAction

public MultiValuedFilter.MatchAction getMatchAction()

Description copied from interface: MultiValuedFilter

* Flag Controlling MatchAction property When one or more of the operands evaluates to multiple values rather than a single value, which action should be taken? If there are n values for the left operand and m values for the right operand, there are n * m possible combinations that can be compared,

ANY - if any of the possible combinations match, the result is true (aggregated OR) ALL - only if all of the possible combinations match, the result is true (aggregated AND) ONE - only if exactly one of the possible combinations match, the result is true (aggregated XOR)

Specified by:

getMatchAction in interface MultiValuedFilter

Returns:

MatchAction flag

eval

protected Object[] eval(Object object)

Convenience method which evaluates the expressions and trys to align the values to be of the same type.

If the values can not be aligned, the original values are returned.

eval

protected Object[] eval(Object v1,
                        Object v2)

Convenience method which evaluates the expressions and trys to align the values to be of the same type.

If the values can not be aligned, the original values are returned.

comparable

protected final Comparable comparable(Object value)

Wraps an object in a Comparable.

Parameters:

value - The original value.

Returns:

A comparable