/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
package org.teiid.language;
import org.teiid.language.Comparison.Operator;
import org.teiid.language.visitor.LanguageObjectVisitor;
/**
* Represents a quantified comparison criteria. This criteria has an expression on the left,
* a comparison operator (such as =, <, etc), a quantification operator (ALL, ANY),
* and a subquery.
*/
public class SubqueryComparison extends Condition implements Predicate, SubqueryContainer {
public enum Quantifier {
SOME,
ALL
}
private Expression leftExpr;
private Operator operator;
private Quantifier quantifier;
private QueryExpression query;
/**
*
*/
public SubqueryComparison(Expression leftExpr, Operator operator, Quantifier quantifier, QueryExpression query) {
this.leftExpr = leftExpr;
this.operator = operator;
this.quantifier = quantifier;
this.query = query;
}
public Expression getLeftExpression() {
return this.leftExpr;
}
public Operator getOperator() {
return this.operator;
}
public Quantifier getQuantifier() {
return this.quantifier;
}
public QueryExpression getSubquery() {
return this.query;
}
public void acceptVisitor(LanguageObjectVisitor visitor) {
visitor.visit(this);
}
public void setLeftExpression(Expression expression) {
this.leftExpr = expression;
}
public void setOperator(Operator operator) {
this.operator = operator;
}
public void setQuantifier(Quantifier quantifier) {
this.quantifier = quantifier;
}
public void setSubquery(QueryExpression query) {
this.query = query;
}
}