Lucene example source code file (TestFieldInfos.java)

This example Lucene source code file (TestFieldInfos.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

directory, document, document, exception, fieldinfo, fieldinfos, fieldinfos, indexoutput, io, ioexception, ioexception, lucenetestcase, lucenetestcase, override, string

The Lucene TestFieldInfos.java source code

package org.apache.lucene.index;

/**
 * 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 org.apache.lucene.util.LuceneTestCase;
import org.apache.lucene.document.Document;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.IndexOutput;

import java.io.IOException;

//import org.cnlp.utils.properties.ResourceBundleHelper;

public class TestFieldInfos extends LuceneTestCase {

  private Document testDoc = new Document();

  @Override
  public void setUp() throws Exception {
    super.setUp();
    DocHelper.setupDoc(testDoc);
  }

  public void test() throws IOException {
    //Positive test of FieldInfos
    assertTrue(testDoc != null);
    FieldInfos fieldInfos = new FieldInfos();
    fieldInfos.add(testDoc);
    //Since the complement is stored as well in the fields map
    assertTrue(fieldInfos.size() == DocHelper.all.size()); //this is all b/c we are using the no-arg constructor
    Directory dir = newDirectory();
    String name = "testFile";
    IndexOutput output = dir.createOutput(name);
    assertTrue(output != null);
    //Use a RAMOutputStream
    
      fieldInfos.write(output);
      output.close();
      assertTrue(dir.fileLength(name) > 0);
      FieldInfos readIn = new FieldInfos(dir, name);
      assertTrue(fieldInfos.size() == readIn.size());
      FieldInfo info = readIn.fieldInfo("textField1");
      assertTrue(info != null);
      assertTrue(info.storeTermVector == false);
      assertTrue(info.omitNorms == false);

      info = readIn.fieldInfo("textField2");
      assertTrue(info != null);
      assertTrue(info.storeTermVector == true);
      assertTrue(info.omitNorms == false);

      info = readIn.fieldInfo("textField3");
      assertTrue(info != null);
      assertTrue(info.storeTermVector == false);
      assertTrue(info.omitNorms == true);

      info = readIn.fieldInfo("omitNorms");
      assertTrue(info != null);
      assertTrue(info.storeTermVector == false);
      assertTrue(info.omitNorms == true);

      dir.close();
  }
}