org.mycore.services.fieldquery.MCRQueryCondition Maven / Gradle / Ivy
/*
* This file is part of *** M y C o R e ***
* See http://www.mycore.de/ for details.
*
* MyCoRe is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* MyCoRe 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.
*
* You should have received a copy of the GNU General Public License
* along with MyCoRe. If not, see .
*/
package org.mycore.services.fieldquery;
import org.jdom2.Element;
import org.mycore.parsers.bool.MCRCondition;
/**
* Represents a simple query condition, which consists of a search field,
* a value and a comparison operator.
*
* @author Frank Lützenkirchen
*/
public class MCRQueryCondition extends MCRFieldBaseValue implements MCRCondition {
/** The comparison operator used in this condition */
private String operator;
public MCRQueryCondition(String fieldName, String operator, String value) {
super(fieldName, value);
this.operator = operator;
}
public void setOperator(String operator) {
this.operator = operator;
}
/** Returns the comparison operator used in this condition */
public String getOperator() {
return this.operator;
}
@Override
public String toString() {
return getFieldName() + " " + getOperator() + " \"" + getValue() + "\"";
}
public Element toXML() {
Element condition = new Element("condition");
condition.setAttribute("field", getFieldName());
condition.setAttribute("operator", operator);
condition.setAttribute("value", getValue());
return condition;
}
public boolean evaluate(Void o) {
//there is no 'void' instance
throw new UnsupportedOperationException();
}
}