openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/conf/TestAutoDetachProperty.java

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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,
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package org.apache.openjpa.conf;

import java.util.EnumSet;
import java.util.HashMap;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;

import org.apache.openjpa.persistence.AutoDetachType;
import org.apache.openjpa.persistence.OpenJPAEntityManagerFactory;
import org.apache.openjpa.persistence.OpenJPAPersistence;

import junit.framework.TestCase;

public class TestAutoDetachProperty extends TestCase {
    private EntityManager em;
    private EntityManagerFactory emf;

    @Override
    public void setUp() throws Exception {
        // Don't modify system props, as we are trying to get as close as
        // possible to testing props in persistence.xml
        HashMap props = new HashMap(System.getProperties());
        props.put("openjpa.AutoDetach", "commit,close,nontx-read");
        emf = (OpenJPAEntityManagerFactory) Persistence
                .createEntityManagerFactory("test", props);

        em = emf.createEntityManager();
    }

    @Override
    public void tearDown() throws Exception {
        em.close();
        em = null;
        emf.close();
        emf = null;
    }

    public void testIsAutoDetachingOnClose() {
        assertTrue("not autodetaching on close as expected",
                isAutoDetachingOnClose());
    }

    public void testIsAutoDetachingOnCommit() {
        assertTrue("not autodetaching on commit as expected",
                isAutoDetachingOnCommit());
    }

    public void testIsAutoDetachingOnNonTxRead() {
        assertTrue("not autodetaching on nontransactional read as expected",
                isAutoDetachingOnNonTxRead());
    }

    private boolean isAutoDetachingOnClose() {
        EnumSet<AutoDetachType> autoDetachFlags =
            OpenJPAPersistence.cast(em).getAutoDetach();
        return autoDetachFlags.contains(AutoDetachType.CLOSE);
    }

    private boolean isAutoDetachingOnCommit() {
        EnumSet<AutoDetachType> autoDetachFlags =
            OpenJPAPersistence.cast(em).getAutoDetach();
        return autoDetachFlags.contains(AutoDetachType.COMMIT);
    }

    private boolean isAutoDetachingOnNonTxRead() {
        EnumSet<AutoDetachType> autoDetachFlags =
            OpenJPAPersistence.cast(em).getAutoDetach();
        return autoDetachFlags.contains(AutoDetachType.NON_TRANSACTIONAL_READ);
    }
}