org.apache.openjpa.kernel.exps.SubQ 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
* regarding copyright ownership. The ASF licenses this file
* 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
* under the License.
*/
package org.apache.openjpa.kernel.exps;
import org.apache.openjpa.kernel.StoreContext;
import org.apache.openjpa.lib.util.Localizer;
import org.apache.openjpa.util.UnsupportedException;
/**
* An in-memory representation of a {@link Subquery}. Currently
* subqueries aren't supported for in-memory use.
*
* @author Abe White
*/
class SubQ
extends Val
implements Subquery {
private static final Localizer _loc = Localizer.forPackage(Subquery.class);
private final String _alias;
private String _subqAlias = null;
private Class _type = null;
public SubQ(String alias) {
_alias = alias;
_subqAlias = alias;
}
public Object getSelect() {
return null;
}
public String getCandidateAlias() {
return _alias;
}
public void setSubqAlias(String subqAlias) {
_subqAlias = subqAlias;
}
public String getSubqAlias() {
return _subqAlias;
}
public void setQueryExpressions(QueryExpressions q) {
}
public Class getType() {
return _type;
}
public void setImplicitType(Class type) {
_type = type;
}
protected Object eval(Object candidate, Object orig,
StoreContext ctx, Object[] params) {
throw new UnsupportedException(_loc.get("in-mem-subquery"));
}
}