/*
* 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.resolver;
import java.util.ArrayList;
import java.util.Collection;
import org.teiid.designer.runtime.version.spi.ITeiidServerVersion;
import org.teiid.query.parser.LanguageVisitor;
import org.teiid.query.sql.lang.LanguageObject;
import org.teiid.query.sql.symbol.CaseExpression;
import org.teiid.query.sql.symbol.ElementSymbol;
import org.teiid.query.sql.symbol.Function;
import org.teiid.query.sql.symbol.GroupSymbol;
import org.teiid.query.sql.symbol.Reference;
import org.teiid.query.sql.symbol.ScalarSubquery;
import org.teiid.query.sql.symbol.SearchedCaseExpression;
/**
* Used to verify that all symbols in a LanguageObject were resolved
* with respect to runtime metadata
*/
public class CheckSymbolsAreResolvedVisitor extends LanguageVisitor {
private Collection<LanguageObject> unresolvedSymbols;
/**
* @param teiidVersion
*/
public CheckSymbolsAreResolvedVisitor(ITeiidServerVersion teiidVersion) {
super(teiidVersion);
unresolvedSymbols = new ArrayList<LanguageObject>();
}
/**
* Get the Collection of any unresolved symbols
* @return Collection of any unresolved Symbols; may
* be empty but never null
*/
public Collection<LanguageObject> getUnresolvedSymbols(){
return this.unresolvedSymbols;
}
@Override
public void visit(CaseExpression obj) {
if (obj.getType() == null){
this.unresolvedSymbols.add(obj);
}
}
@Override
public void visit(ElementSymbol obj) {
if (obj.getMetadataID() == null){
this.unresolvedSymbols.add(obj);
}
}
@Override
public void visit(GroupSymbol obj) {
if (!obj.isResolved()){
this.unresolvedSymbols.add(obj);
}
}
@Override
public void visit(SearchedCaseExpression obj) {
if (obj.getType() == null){
this.unresolvedSymbols.add(obj);
}
}
@Override
public void visit(ScalarSubquery obj) {
if (obj.getType() == null){
this.unresolvedSymbols.add(obj);
}
}
@Override
public void visit(Function obj) {
if (obj.getFunctionDescriptor() == null){
this.unresolvedSymbols.add(obj);
}
}
@Override
public void visit(Reference obj) {
if (obj.getType() == null){
this.unresolvedSymbols.add(obj);
}
}
}