org.deegree.filter.logical
Class And

java.lang.Object
  org.deegree.filter.logical.LogicalOperator
      org.deegree.filter.logical.And

All Implemented Interfaces:

Operator

public class And
extends LogicalOperator

The API for the And logical operator. For the schema model, see http://schemas.opengis.net/filter/1.1.0/filter.xsd

Version:

$Revision:$, $Date:$

Author:

Markus Schneider , Andrei Ionita , last edited by: $Author:$

Nested Class Summary

Nested classes/interfaces inherited from class org.deegree.filter.logical.LogicalOperator

LogicalOperator.SubType

Nested classes/interfaces inherited from interface org.deegree.filter.Operator

Operator.Type

Constructor Summary

And(Operator... paramsArray)
Creates an And operator by providing an arbitrary number of parameters

Method Summary

<T> boolean	evaluate(T obj, XPathEvaluator<T> xpathEvaluator) Determines the value of the boolean operator.
Operator	getParameter(int n)
Operator[]	getParams()
int	getSize() Return the number of parameters in the And operator
LogicalOperator.SubType	getSubType()
String	toString(String indent)

Methods inherited from class org.deegree.filter.logical.LogicalOperator

getType

Methods inherited from class java.lang.Object

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

Constructor Detail

And

public And(Operator... paramsArray)
    throws IllegalArgumentException

Creates an And operator by providing an arbitrary number of parameters

Parameters:

paramsArray - an arbitrary number of parameters

Throws:

IllegalArgumentException - when less than 2 parameters are provided

Method Detail

getSize

public int getSize()

Return the number of parameters in the And operator

Returns:

the number of parameters

getParameter

public Operator getParameter(int n)

Parameters:

n - the index of the wanted argument. Starting from 0.

Returns:

returns the nth parameter of the And operator. In order to prevent the IndexOutOfBoundsException from occurring, one can call getSize() first and check...

getSubType

public LogicalOperator.SubType getSubType()

Specified by:

getSubType in class LogicalOperator

evaluate

public <T> boolean evaluate(T obj,
                            XPathEvaluator<T> xpathEvaluator)
                 throws FilterEvaluationException

Description copied from interface: Operator

Determines the value of the boolean operator.

Type Parameters:

T - type of the context object

Parameters:

obj - object that the operator is evaluated upon, must not be null

xpathEvaluator - used for evaluation of XPath expressions, must not be null

Returns:

true, if the operator evaluates to true, false otherwise

Throws:

FilterEvaluationException - if the evaluation fails

toString

public String toString(String indent)

getParams

public Operator[] getParams()

Specified by:

getParams in class LogicalOperator