/*
* 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.query.sql.lang;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import org.teiid.query.sql.LanguageObject;
import org.teiid.query.sql.LanguageVisitor;
import org.teiid.query.sql.symbol.ElementSymbol;
import org.teiid.query.sql.symbol.Expression;
import org.teiid.query.sql.visitor.SQLStringVisitor;
public class SetClauseList implements LanguageObject {
private static final long serialVersionUID = 8174681510498719451L;
private List<SetClause> setClauses;
public SetClauseList() {
this.setClauses = new ArrayList<SetClause>();
}
public SetClauseList(List<SetClause> setClauses) {
this.setClauses = setClauses;
}
public void addClause(ElementSymbol symbol, Expression expression) {
this.setClauses.add(new SetClause(symbol, expression));
}
public void addClause(SetClause clause) {
this.setClauses.add(clause);
}
public void acceptVisitor(LanguageVisitor visitor) {
visitor.visit(this);
}
@Override
public String toString() {
return SQLStringVisitor.getSQLString(this);
}
@Override
public Object clone() {
SetClauseList copy = new SetClauseList();
for (SetClause clause : this.setClauses) {
copy.addClause((SetClause)clause.clone());
}
return copy;
}
/**
* @return a non-updateable map representation
*/
public LinkedHashMap<ElementSymbol, Expression> getClauseMap() {
LinkedHashMap<ElementSymbol, Expression> result = new LinkedHashMap<ElementSymbol, Expression>();
for (SetClause clause : this.setClauses) {
result.put(clause.getSymbol(), clause.getValue());
}
return result;
}
public List<SetClause> getClauses() {
return this.setClauses;
}
public boolean isEmpty() {
return this.setClauses.isEmpty();
}
@Override
public boolean equals(Object obj) {
if(this == obj) {
return true;
}
if(!(obj instanceof SetClauseList)) {
return false;
}
SetClauseList other = (SetClauseList) obj;
return this.setClauses.equals(other.setClauses);
}
@Override
public int hashCode() {
return setClauses.hashCode();
}
}