/*
* 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.visitor;
import static org.junit.Assert.*;
import java.util.Arrays;
import java.util.LinkedList;
import org.junit.Test;
import org.teiid.query.resolver.TestResolver;
import org.teiid.query.resolver.util.ResolverUtil;
import org.teiid.query.rewriter.QueryRewriter;
import org.teiid.query.sql.lang.Command;
import org.teiid.query.sql.lang.ExistsCriteria;
import org.teiid.query.sql.lang.Query;
import org.teiid.query.sql.symbol.GroupSymbol;
import org.teiid.query.sql.symbol.Reference;
import org.teiid.query.unittest.RealMetadataFactory;
@SuppressWarnings("nls")
public class TestCorrelatedReferenceCollectorVisitor {
@Test public void testDeepNesting() throws Exception {
String sql = "select * from bqt1.smalla where exists (select intnum from bqt1.smalla x where smalla.intnum = x.intnum and exists (select intnum from bqt1.smalla where exists (select intnum from bqt1.smalla x where smalla.intnum = x.intnum)))";
Command command = TestResolver.helpResolve(sql, RealMetadataFactory.exampleBQTCached());
command = QueryRewriter.rewrite(command, RealMetadataFactory.exampleBQTCached(), null);
command = ((ExistsCriteria)((Query)command).getCriteria()).getCommand();
LinkedList<Reference> correlatedReferences = new LinkedList<Reference>();
GroupSymbol gs = new GroupSymbol("bqt1.smalla");
ResolverUtil.resolveGroup(gs, RealMetadataFactory.exampleBQTCached());
CorrelatedReferenceCollectorVisitor.collectReferences(command, Arrays.asList(gs), correlatedReferences, RealMetadataFactory.exampleBQTCached());
assertEquals(1, correlatedReferences.size());
}
}