/**
* Copyright (C) 2008 - 2014 52°North Initiative for Geospatial Open Source
* Software GmbH
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* If the program is linked with libraries which are licensed under one of
* the following licenses, the combination of the program with the linked
* library is not considered a "derivative work" of the program:
*
* - Apache License, version 2.0
* - Apache Software License, version 1.0
* - GNU Lesser General Public License, version 3
* - Mozilla Public License, versions 1.0, 1.1 and 2.0
* - Common Development and Distribution License (CDDL), version 1.0
*
* Therefore the distribution of the program linked with libraries licensed
* under the aforementioned licenses, is permitted by the copyright holders
* if the distribution is compliant with both the GNU General Public
* icense version 2 and the aforementioned licenses.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*/
/**
* Part of the diploma thesis of Thomas Everding.
* @author Thomas Everding
*/
package org.n52.ses.eml.v002.filter.comparison;
import java.util.HashSet;
import net.opengis.fes.x20.BinaryComparisonOpType;
/**
* filters via !=
*
* @author Thomas Everding
*
*/
public class NotEqualToFilter extends ABinaryComparisonFilter {
/**
*
* Constructor
*
* @param binaryOp filter definition
* @param propertyNames names of the properties used in this filter / pattern
*/
public NotEqualToFilter(BinaryComparisonOpType binaryOp, HashSet<Object> propertyNames) {
this.initialize(binaryOp, propertyNames);
}
@Override
public String createExpressionString(boolean complexPatternGuard) {
String result = "";
if (this.first.getUsedProperty() != null || this.second.getUsedProperty() != null) {
result += createUsedPropertyString();
}
String firstString = this.first.createExpressionString(complexPatternGuard);
String secondString = this.second.createExpressionString(complexPatternGuard);
/*
* check if the format is parsable with esper. otherwise
* change it (add quotes etc.)
*/
String[] a = checkDataTypes(complexPatternGuard, firstString, secondString);
firstString = a[0];
secondString = a[1];
result += "("
+ firstString
+ " != "
+ secondString
+")";
return result;
}
}