openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/persistence/query/TestAccessPathsOfSubqueries.java

/*
 * TestAccessPathsOfSubqueries.java
 *
 * Created on October 17, 2006, 2:51 PM
 *
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 */

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
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package org.apache.openjpa.persistence.query;

import java.util.Arrays;
import java.util.Collection;


import org.apache.openjpa.persistence.query.common.apps.RuntimeTest1;
import org.apache.openjpa.persistence.query.common.apps.RuntimeTest4;
import org.apache.openjpa.persistence.query.common.apps.RuntimeTest5;
import org.apache.openjpa.kernel.Broker;
import org.apache.openjpa.kernel.Query;
import org.apache.openjpa.kernel.jpql.JPQLParser;
import org.apache.openjpa.meta.ClassMetaData;

public class TestAccessPathsOfSubqueries extends BaseQueryTest {

    /**
     * Creates a new instance of TestAccessPathsOfSubqueries
     */

    public TestAccessPathsOfSubqueries(String name) {
        super(name);
    }

    public void testSimpleSubqueryAccessPath() {
        Broker broker = getBrokerFactory().newBroker();
        Query q = broker.newQuery(JPQLParser.LANG_JPQL,
            "SELECT o FROM RuntimeTest1 o WHERE EXISTS (SELECT rt5.name FROM RuntimeTest5 rt5 WHERE rt5.name IS NOT NULL)");
        ClassMetaData[] metas = q.getAccessPathMetaDatas();
        Collection c = Arrays.asList(metas);
        ClassMetaData rt1 = broker.getConfiguration().
            getMetaDataRepositoryInstance().getMetaData(RuntimeTest1.class,
            broker.getClassLoader(), true);
        ClassMetaData rt5 = broker.getConfiguration().
            getMetaDataRepositoryInstance().getMetaData(RuntimeTest5.class,
            broker.getClassLoader(), true);
        assertTrue(c.contains(rt1));
        assertTrue(c.contains(rt5));
        assertEquals(2, c.size());
    }

    public void testRelationTraversalSubqueryAccessPath() {
        Broker broker = getBrokerFactory().newBroker();
        Query q = broker.newQuery(JPQLParser.LANG_JPQL,
            "SELECT o FROM RuntimeTest1 o WHERE EXISTS (SELECT rt5.runtimeTest4.name FROM RuntimeTest5 rt5 WHERE rt5.name IS NOT NULL)");

        ClassMetaData[] metas = q.getAccessPathMetaDatas();
        Collection c = Arrays.asList(metas);
        ClassMetaData rt1 = broker.getConfiguration().
            getMetaDataRepositoryInstance().getMetaData(RuntimeTest1.class,
            broker.getClassLoader(), true);
        ClassMetaData rt4 = broker.getConfiguration().
            getMetaDataRepositoryInstance().getMetaData(RuntimeTest4.class,
            broker.getClassLoader(), true);
        ClassMetaData rt5 = broker.getConfiguration().
            getMetaDataRepositoryInstance().getMetaData(RuntimeTest5.class,
            broker.getClassLoader(), true);
        assertTrue(c.contains(rt1));
        assertTrue(c.contains(rt4));
        assertTrue(c.contains(rt5));
        assertEquals(3, c.size());
    }
}