/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* // Copyright (c) 1998, 2007, Oracle. All rights reserved.
*
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
* [name of copyright owner]"
*
* Contributor(s):
*
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package oracle.toplink.essentials.internal.parsing;
// Java imports
import java.util.*;
// TopLink imports
import oracle.toplink.essentials.expressions.*;
import oracle.toplink.essentials.queryframework.ReportQuery;
import oracle.toplink.essentials.exceptions.EJBQLException;
/**
* INTERNAL
* <p><b>Purpose</b>: Represent an IN in EJBQL
* <p><b>Responsibilities</b>:<ul>
* <li> Generate the correct expression for an IN
* </ul>
* @author Jon Driscoll and Joel Lucuik
* @since TopLink 4.0
*/
public class InNode extends SimpleConditionalExpressionNode {
private List theObjects = null;
//Was NOT indicated? "WHERE emp.lastName NOT IN (...)
private boolean notIndicated = false;
/**
* InNode constructor comment.
*/
public InNode() {
super();
}
/**
* INTERNAL
* Add the passed node value to the collection of object for this node
*/
public void addNodeToTheObjects(Node theNode) {
getTheObjects().add(theNode);
}
/**
* INTERNAL
* Validate the current node and calculates its type.
*/
public void validate(ParseTreeContext context) {
Object leftType = null;
TypeHelper typeHelper = context.getTypeHelper();
if (left != null) {
left.validate(context);
leftType = left.getType();
}
for (Iterator i = getTheObjects().iterator(); i.hasNext();) {
Node node = (Node)i.next();
node.validate(context);
node.validateParameter(context, leftType);
Object nodeType = node.getType();
if ((leftType != null) && !typeHelper.isAssignableFrom(leftType, nodeType))
throw EJBQLException.invalidExpressionArgument(
context.getQueryInfo(), node.getLine(), node.getColumn(),
"IN", node.getAsString(), typeHelper.getTypeName(leftType));
}
setType(typeHelper.getBooleanType());
}
/**
* INTERNAL
* Return the TopLink expression for this node
*/
public Expression generateExpression(GenerationContext context) {
Expression whereClause = getLeft().generateExpression(context);
List arguments = getTheObjects();
Node firstArg = (Node)arguments.get(0);
if (firstArg.isSubqueryNode()) {
SubqueryNode subqueryNode = (SubqueryNode)firstArg;
ReportQuery reportQuery = subqueryNode.getReportQuery(context);
if (notIndicated()) {
whereClause = whereClause.notIn(reportQuery);
}
else {
whereClause = whereClause.in(reportQuery);
}
}
else {
Vector inArguments = new Vector(arguments.size());
for (Iterator iter = arguments.iterator(); iter.hasNext();) {
Node nextNode = (Node)iter.next();
inArguments.add(nextNode.generateExpression(context));
}
if (inArguments.size() > 0) {
if (notIndicated()) {
whereClause = whereClause.notIn(inArguments);
} else {
whereClause = whereClause.in(inArguments);
}
}
}
return whereClause;
}
/**
* INTERNAL
* Return the collection of the objects used as parameters for this node
*/
public List getTheObjects() {
if (theObjects == null) {
setTheObjects(new Vector());
}
return theObjects;
}
/**
* INTERNAL
* Set this node's object collection to the passed value
*/
public void setTheObjects(List newTheObjects) {
theObjects = newTheObjects;
}
/**
* INTERNAL
* Indicate if a NOT was found in the WHERE clause.
* Examples:
* ...WHERE ... NOT IN(...)
*/
public void indicateNot() {
notIndicated = true;
}
public boolean notIndicated() {
return notIndicated;
}
}