org.apache.openjpa.jdbc.kernel.exps.ContainsExpression Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* distributed with this work for additional information
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* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
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*/
package org.apache.openjpa.jdbc.kernel.exps;
import java.util.Map;
import org.apache.openjpa.jdbc.sql.Select;
/**
* Tests whether one value contains another.
*
* @author Abe White
*/
class ContainsExpression
extends EqualExpression {
private static final long serialVersionUID = 1L;
/**
* Constructor. Supply values to test.
*/
public ContainsExpression(Val val1, Val val2) {
super(val1, val2);
}
@Override
public ExpState initialize(Select sel, ExpContext ctx, Map contains) {
Val val1 = getValue1();
if (contains != null && val1 instanceof PCPath) {
PCPath sql = (PCPath) val1;
String path = sql.getPCPathString();
// update the count for this path
Integer count = (Integer) contains.get(path);
if (count == null)
count = 0;
else
count = count + 1;
contains.put(path, count);
sql.setContainsId(count.toString());
}
return super.initialize(sel, ctx, contains);
}
@Override
protected boolean isDirectComparison() {
return false;
}
}