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Free Java Reporting Library
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2022 TIBCO Software Inc. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see .
*/
package net.sf.jasperreports.engine.query;
/**
* SQL "EQUAL" clause function.
*
* @author Sanda Zaharia ([email protected])
* @see #apply(JRClauseTokens, JRQueryClauseContext)
*/
public class JRSqlNotEqualClause extends JRSqlAbstractEqualClause
{
protected static final String OPERATOR_NOT_EQUAL = "<>";
protected static final String OPERATOR_IS_NOT_NULL = "IS NOT NULL";
protected static final JRSqlNotEqualClause singleton = new JRSqlNotEqualClause();
/**
* Returns the singleton function instance.
*
* @return the singleton function instance
*/
public static JRSqlNotEqualClause instance()
{
return singleton;
}
@Override
protected void handleEqualOperator(StringBuffer sbuffer, String param, JRQueryClauseContext queryContext)
{
Object paramValue = queryContext.getValueParameter(param).getValue();
if(paramValue == null)
{
sbuffer.append(OPERATOR_IS_NOT_NULL);
}
else
{
sbuffer.append(OPERATOR_NOT_EQUAL);
finalizeClause(sbuffer, param, queryContext);
}
}
}