org.neo4j.index.impl.lucene.legacy.WritableIndexReferenceFactoryTest.java Source code

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Here is the source code for org.neo4j.index.impl.lucene.legacy.WritableIndexReferenceFactoryTest.java

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/*
 * Copyright (c) 2002-2016 "Neo Technology,"
 * Network Engine for Objects in Lund AB [http://neotechnology.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.neo4j.index.impl.lucene.legacy;

import org.apache.lucene.document.Document;
import org.apache.lucene.index.IndexWriter;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;

import java.io.File;
import java.io.IOException;

import org.neo4j.graphdb.Node;
import org.neo4j.graphdb.index.IndexManager;
import org.neo4j.helpers.collection.MapUtil;
import org.neo4j.io.fs.DefaultFileSystemAbstraction;
import org.neo4j.kernel.impl.index.IndexConfigStore;
import org.neo4j.kernel.impl.index.IndexEntityType;
import org.neo4j.test.CleanupRule;
import org.neo4j.test.TargetDirectory;

import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertSame;

public class WritableIndexReferenceFactoryTest {
    @Rule
    public TargetDirectory.TestDirectory testDirectory = TargetDirectory.testDirForTest(getClass());
    @Rule
    public CleanupRule cleanupRule = new CleanupRule();

    private static final String INDEX_NAME = "testIndex";

    private LuceneDataSource.LuceneFilesystemFacade filesystemFacade = LuceneDataSource.LuceneFilesystemFacade.MEMORY;
    private IndexIdentifier indexIdentifier = new IndexIdentifier(IndexEntityType.Node, INDEX_NAME);
    private IndexConfigStore indexStore;

    @Before
    public void setUp() throws IOException {
        setupIndexInfrastructure();
    }

    @Test
    public void createWritableIndexReference() throws Exception {
        WritableIndexReferenceFactory indexReferenceFactory = createFactory();
        IndexReference indexReference = createIndexReference(indexReferenceFactory);

        assertNotNull("Index should have writer.", indexReference.getWriter());
    }

    @Test
    public void refreshNotChangedWritableIndexReference() throws Exception {
        WritableIndexReferenceFactory indexReferenceFactory = createFactory();
        IndexReference indexReference = createIndexReference(indexReferenceFactory);

        IndexReference refreshedInstance = indexReferenceFactory.refresh(indexReference);
        assertSame(indexReference, refreshedInstance);
    }

    @Test
    public void refreshChangedWritableIndexReference() throws Exception {
        WritableIndexReferenceFactory indexReferenceFactory = createFactory();
        IndexReference indexReference = createIndexReference(indexReferenceFactory);

        writeSomething(indexReference);

        IndexReference refreshedIndexReference = indexReferenceFactory.refresh(indexReference);
        cleanupRule.add(refreshedIndexReference);

        assertNotSame("Should return new refreshed index reference.", indexReference, refreshedIndexReference);
    }

    private void writeSomething(IndexReference indexReference) throws IOException {
        IndexWriter writer = indexReference.getWriter();
        writer.addDocument(new Document());
        writer.commit();
    }

    private IndexReference createIndexReference(WritableIndexReferenceFactory indexReferenceFactory)
            throws IOException {
        IndexReference indexReference = indexReferenceFactory.createIndexReference(indexIdentifier);
        cleanupRule.add(indexReference);
        return indexReference;
    }

    private WritableIndexReferenceFactory createFactory() {
        return new WritableIndexReferenceFactory(filesystemFacade, new File(getStoreDir(), "index"),
                new IndexTypeCache(indexStore));
    }

    private void setupIndexInfrastructure() throws IOException {
        DefaultFileSystemAbstraction fileSystemAbstraction = new DefaultFileSystemAbstraction();
        File storeDir = getStoreDir();
        indexStore = new IndexConfigStore(storeDir, fileSystemAbstraction);
        indexStore.set(Node.class, INDEX_NAME,
                MapUtil.stringMap(IndexManager.PROVIDER, "lucene", "type", "fulltext"));
    }

    private File getStoreDir() {
        return testDirectory.directory();
    }

}