/******************************************************************************* | |
* Copyright (c) 2006, 2013 Oracle and/or its affiliates. All rights reserved. | |
* This program and the accompanying materials are made available under the | |
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 | |
* which accompanies this distribution. | |
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html | |
* and the Eclipse Distribution License is available at | |
* http://www.eclipse.org/org/documents/edl-v10.php. | |
* | |
* Contributors: | |
* Oracle - initial API and implementation | |
* | |
******************************************************************************/ | |
package org.eclipse.persistence.jpa.jpql.parser; | |
import java.util.List; | |
import org.eclipse.persistence.jpa.jpql.WordParser; | |
/** | |
* This expression contains a portion of the query that is unknown to the parser. This can happen | |
* when the query is malformed or incomplete. | |
* | |
* @version 2.5 | |
* @since 2.3 | |
* @author Pascal Filion | |
*/ | |
public final class UnknownExpression extends AbstractExpression { | |
/** | |
* Creates a new <code>UnknownExpression</code>. | |
* | |
* @param parent The parent of this expression | |
* @param text The text to be stored in this expression | |
*/ | |
public UnknownExpression(AbstractExpression parent, String text) { | |
super(parent, text); | |
} | |
/** | |
* {@inheritDoc} | |
*/ | |
public void accept(ExpressionVisitor visitor) { | |
visitor.visit(this); | |
} | |
/** | |
* {@inheritDoc} | |
*/ | |
public void acceptChildren(ExpressionVisitor visitor) { | |
// No children to visit | |
} | |
/** | |
* {@inheritDoc} | |
*/ | |
@Override | |
protected void addOrderedChildrenTo(List<Expression> children) { | |
children.add(buildStringExpression(getText())); | |
} | |
/** | |
* {@inheritDoc} | |
*/ | |
@Override | |
public JPQLQueryBNF findQueryBNF(Expression expression) { | |
return getParent().findQueryBNF(expression); | |
} | |
/** | |
* {@inheritDoc} | |
*/ | |
public JPQLQueryBNF getQueryBNF() { | |
return getParent().getQueryBNF(); | |
} | |
/** | |
* {@inheritDoc} | |
*/ | |
@Override | |
public String getText() { | |
return super.getText(); | |
} | |
/** | |
* {@inheritDoc} | |
*/ | |
@Override | |
protected boolean isUnknown() { | |
return true; | |
} | |
/** | |
* {@inheritDoc} | |
*/ | |
@Override | |
protected void parse(WordParser wordParser, boolean tolerant) { | |
wordParser.moveForward(getText()); | |
} | |
/** | |
* {@inheritDoc} | |
*/ | |
@Override | |
public String toParsedText() { | |
return getText(); | |
} | |
/** | |
* {@inheritDoc} | |
*/ | |
@Override | |
protected void toParsedText(StringBuilder writer, boolean actual) { | |
writer.append(getText()); | |
} | |
} |