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/*
* The contents of this file are subject to the terms
* of the Common Development and Distribution License
* (the "License"). You may not use this file except
* in compliance with the License.
*
* You can obtain a copy of the license at
* glassfish/bootstrap/legal/CDDLv1.0.txt or
* https://glassfish.dev.java.net/public/CDDLv1.0.html.
* See the License for the specific language governing
* permissions and limitations under the License.
*
* When distributing Covered Code, include this CDDL
* HEADER in each file and include the License file at
* glassfish/bootstrap/legal/CDDLv1.0.txt. If applicable,
* add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your
* own identifying information: Portions Copyright [yyyy]
* [name of copyright owner]
*/
// Copyright (c) 1998, 2007, Oracle. All rights reserved.
package oracle.toplink.essentials.internal.expressions;
import oracle.toplink.essentials.exceptions.*;
import oracle.toplink.essentials.queryframework.*;
import oracle.toplink.essentials.expressions.*;
import oracle.toplink.essentials.internal.sessions.AbstractRecord;
import oracle.toplink.essentials.internal.sessions.AbstractSession;
import oracle.toplink.essentials.descriptors.ClassDescriptor;
/**
* Used for logical AND and OR. This is not used by NOT.
*/
public class LogicalExpression extends CompoundExpression {
/**
* LogicalExpression constructor comment.
*/
public LogicalExpression() {
super();
}
/**
* INTERNAL:
* Used for debug printing.
*/
public String descriptionOfNodeType() {
return "Logical";
}
/**
* INTERNAL:
* Check if the object conforms to the expression in memory.
* This is used for in-memory querying.
* If the expression in not able to determine if the object conform throw a not supported exception.
*/
public boolean doesConform(Object object, AbstractSession session, AbstractRecord translationRow, InMemoryQueryIndirectionPolicy valueHolderPolicy, boolean objectIsUnregistered) {
// This should always be and or or.
if (getOperator().getSelector() == ExpressionOperator.And) {
return getFirstChild().doesConform(object, session, translationRow, valueHolderPolicy, objectIsUnregistered) && getSecondChild().doesConform(object, session, translationRow, valueHolderPolicy, objectIsUnregistered);
} else if (getOperator().getSelector() == ExpressionOperator.Or) {
return getFirstChild().doesConform(object, session, translationRow, valueHolderPolicy, objectIsUnregistered) || getSecondChild().doesConform(object, session, translationRow, valueHolderPolicy, objectIsUnregistered);
}
throw QueryException.cannotConformExpression();
}
/**
* INTERNAL:
* Extract the primary key from the expression into the row.
* Ensure that the query is quering the exact primary key.
* Return false if not on the primary key.
*/
public boolean extractPrimaryKeyValues(boolean requireExactMatch, ClassDescriptor descriptor, AbstractRecord primaryKeyRow, AbstractRecord translationRow) {
// If this is a primary key expression then it can only have and/or relationships.
if (getOperator().getSelector() != ExpressionOperator.And) {
// If this is an exact primary key expression it can not have ors.
// After fixing bug 2782991 this must now work correctly.
if (requireExactMatch || (getOperator().getSelector() != ExpressionOperator.Or)) {
return false;
}
}
boolean validExpression = getFirstChild().extractPrimaryKeyValues(requireExactMatch, descriptor, primaryKeyRow, translationRow);
if (requireExactMatch && (!validExpression)) {
return false;
}
return getSecondChild().extractPrimaryKeyValues(requireExactMatch, descriptor, primaryKeyRow, translationRow);
}
/**
* INTERNAL:
*/
public boolean isLogicalExpression() {
return true;
}
}
