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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
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package org.apache.cayenne.ejbql.parser;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import org.apache.cayenne.ejbql.EJBQLCompiledExpression;
import org.apache.cayenne.ejbql.EJBQLExpression;
import org.apache.cayenne.map.DbRelationship;
import org.apache.cayenne.map.ObjRelationship;
import org.apache.cayenne.query.SQLResultSetMapping;
import org.apache.cayenne.reflect.ClassDescriptor;
/**
* A compiled EJBQL expression.
*
* @since 3.0
*/
class CompiledExpression implements EJBQLCompiledExpression {
private String source;
private String rootId;
private Map<String, ClassDescriptor> descriptorsById;
private Map<String, ObjRelationship> incomingById;
private EJBQLExpression expression;
private SQLResultSetMapping resultSetMapping;
public ClassDescriptor getEntityDescriptor(String idVariable) {
if (idVariable == null) {
return null;
}
return descriptorsById.get(Compiler.normalizeIdPath(idVariable));
}
public SQLResultSetMapping getResultSetMapping() {
return resultSetMapping;
}
public ClassDescriptor getRootDescriptor() {
return rootId != null ? getEntityDescriptor(rootId) : null;
}
public List<DbRelationship> getIncomingRelationships(String identifier) {
ObjRelationship relationship = incomingById.get(identifier);
if (relationship == null) {
return Collections.emptyList();
}
return relationship.getDbRelationships();
}
public EJBQLExpression getExpression() {
return expression;
}
public String getSource() {
return source;
}
void setExpression(EJBQLExpression expression) {
this.expression = expression;
}
void setDescriptorsById(Map<String, ClassDescriptor> descriptorsById) {
this.descriptorsById = descriptorsById;
}
void setIncomingById(Map<String, ObjRelationship> incomingById) {
this.incomingById = incomingById;
}
void setSource(String source) {
this.source = source;
}
void setRootId(String rootId) {
this.rootId = rootId;
}
void setResultSetMapping(SQLResultSetMapping resultSetMapping) {
this.resultSetMapping = resultSetMapping;
}
}