org.elasticsearch.common.lucene.uid.UidFieldTests.java Source code

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Here is the source code for org.elasticsearch.common.lucene.uid.UidFieldTests.java

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/*
 * Licensed to Elastic Search and Shay Banon under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. Elastic Search 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.
 */

package org.elasticsearch.common.lucene.uid;

import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.index.Term;
import org.apache.lucene.store.RAMDirectory;
import org.elasticsearch.common.lucene.Lucene;
import org.testng.annotations.Test;

import static org.hamcrest.MatcherAssert.*;
import static org.hamcrest.Matchers.*;

/**
 * @author kimchy (shay.banon)
 */
public class UidFieldTests {

    @Test
    public void testUidField() throws Exception {
        IndexWriter writer = new IndexWriter(new RAMDirectory(),
                new IndexWriterConfig(Lucene.VERSION, Lucene.STANDARD_ANALYZER));

        IndexReader reader = IndexReader.open(writer, true);
        assertThat(UidField.loadVersion(reader, new Term("_uid", "1")), equalTo(-1l));

        Document doc = new Document();
        doc.add(new Field("_uid", "1", Field.Store.YES, Field.Index.NOT_ANALYZED));
        writer.addDocument(doc);
        reader = reader.reopen();
        assertThat(UidField.loadVersion(reader, new Term("_uid", "1")), equalTo(-2l));
        assertThat(UidField.loadDocIdAndVersion(reader, new Term("_uid", "1")).version, equalTo(-2l));

        doc = new Document();
        doc.add(new UidField("_uid", "1", 1));
        writer.updateDocument(new Term("_uid", "1"), doc);
        reader = reader.reopen();
        assertThat(UidField.loadVersion(reader, new Term("_uid", "1")), equalTo(1l));
        assertThat(UidField.loadDocIdAndVersion(reader, new Term("_uid", "1")).version, equalTo(1l));

        doc = new Document();
        UidField uid = new UidField("_uid", "1", 2);
        doc.add(uid);
        writer.updateDocument(new Term("_uid", "1"), doc);
        reader = reader.reopen();
        assertThat(UidField.loadVersion(reader, new Term("_uid", "1")), equalTo(2l));
        assertThat(UidField.loadDocIdAndVersion(reader, new Term("_uid", "1")).version, equalTo(2l));

        // test reuse of uid field
        doc = new Document();
        uid.version(3);
        doc.add(uid);
        writer.updateDocument(new Term("_uid", "1"), doc);
        reader = reader.reopen();
        assertThat(UidField.loadVersion(reader, new Term("_uid", "1")), equalTo(3l));
        assertThat(UidField.loadDocIdAndVersion(reader, new Term("_uid", "1")).version, equalTo(3l));

        writer.deleteDocuments(new Term("_uid", "1"));
        reader = reader.reopen();
        assertThat(UidField.loadVersion(reader, new Term("_uid", "1")), equalTo(-1l));
        assertThat(UidField.loadDocIdAndVersion(reader, new Term("_uid", "1")), nullValue());
    }
}