home | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Lucene example source code file (TestFileSwitchDirectory.java)

This example Lucene source code file (TestFileSwitchDirectory.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Lucene tags/keywords

fileswitchdirectory, fileswitchdirectory, hashset, indexreader, indexwriter, indexwriterconfig, io, mockanalyzer, mockdirectorywrapper, mockdirectorywrapper, ramdirectory, ramdirectory, set, string, string, util

The Lucene TestFileSwitchDirectory.java source code

package org.apache.lucene.store;

/**
 * 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 "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.io.IOException;
import java.util.HashSet;
import java.util.Set;

import org.apache.lucene.analysis.MockAnalyzer;
import org.apache.lucene.index.IndexFileNames;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.index.TestIndexWriterReader;
import org.apache.lucene.util.LuceneTestCase;

public class TestFileSwitchDirectory extends LuceneTestCase {
  /**
   * Test if writing doc stores to disk and everything else to ram works.
   * @throws IOException
   */
  public void testBasic() throws IOException {
    Set<String> fileExtensions = new HashSet();
    fileExtensions.add(IndexFileNames.FIELDS_EXTENSION);
    fileExtensions.add(IndexFileNames.FIELDS_INDEX_EXTENSION);
    
    MockDirectoryWrapper primaryDir = new MockDirectoryWrapper(random, new RAMDirectory());
    primaryDir.setCheckIndexOnClose(false); // only part of an index
    MockDirectoryWrapper secondaryDir = new MockDirectoryWrapper(random, new RAMDirectory());
    secondaryDir.setCheckIndexOnClose(false); // only part of an index
    
    FileSwitchDirectory fsd = new FileSwitchDirectory(fileExtensions, primaryDir, secondaryDir, true);
    IndexWriter writer = new IndexWriter(
        fsd,
        new IndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random)).
            setMergePolicy(newLogMergePolicy(false))
    );
    TestIndexWriterReader.createIndexNoClose(true, "ram", writer);
    IndexReader reader = IndexReader.open(writer, true);
    assertEquals(100, reader.maxDoc());
    writer.commit();
    // we should see only fdx,fdt files here
    String[] files = primaryDir.listAll();
    assertTrue(files.length > 0);
    for (int x=0; x < files.length; x++) {
      String ext = FileSwitchDirectory.getExtension(files[x]);
      assertTrue(fileExtensions.contains(ext));
    }
    files = secondaryDir.listAll();
    assertTrue(files.length > 0);
    // we should not see fdx,fdt files here
    for (int x=0; x < files.length; x++) {
      String ext = FileSwitchDirectory.getExtension(files[x]);
      assertFalse(fileExtensions.contains(ext));
    }
    reader.close();
    writer.close();

    files = fsd.listAll();
    for(int i=0;i<files.length;i++) {
      assertNotNull(files[i]);
    }
    fsd.close();
  }
}

Other Lucene examples (source code examples)

Here is a short list of links related to this Lucene TestFileSwitchDirectory.java source code file:



my book on functional programming

 

new blog posts

 

Copyright 1998-2019 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.