com.github.s4ke.moar.lucene.query.test.BaseLuceneTest.java Source code

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Here is the source code for com.github.s4ke.moar.lucene.query.test.BaseLuceneTest.java

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/*
 The MIT License (MIT)
    
 Copyright (c) 2016 Martin Braun
    
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
    
 The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.
    
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 */

package com.github.s4ke.moar.lucene.query.test;

import java.io.IOException;
import java.util.Arrays;
import java.util.List;
import java.util.Random;

import org.apache.lucene.analysis.core.WhitespaceAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.FieldType;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexOptions;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.store.Directory;

import static org.junit.Assert.assertEquals;

/**
 * @author Martin Braun
 */
public class BaseLuceneTest {

    public static final List<String> WORDS = Arrays.asList("toast", "marmalade", "peanutbutter", "jelly", "moar",
            "lucene", "regex", "hello", "bye", "bread", "baguette", "pizza", "kebap", "chili", "pepperoni",
            "space");

    public static final int WORD_COUNT_PER_DOCUMENT = 50;
    public static final int BACK_REF_DOC_COUNT = 1000;

    protected Directory d;

    public Document createDocument() {
        return new Document();
    }

    public static final FieldType ID_FIELD_TYPE;

    static {
        FieldType idFieldType = new FieldType();
        idFieldType.setStored(true);
        idFieldType.setTokenized(false);
        idFieldType.setIndexOptions(IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS);
        ID_FIELD_TYPE = idFieldType;
    }

    public static final FieldType TAGS_FIELD_TYPE;

    static {
        FieldType tagsFieldType = new FieldType();
        tagsFieldType.setStored(false);
        tagsFieldType.setTokenized(true);
        tagsFieldType.setStoreTermVectors(false);
        tagsFieldType.setIndexOptions(IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS);
        TAGS_FIELD_TYPE = tagsFieldType;
    }

    protected Random random;

    public void setup(Directory directory, Random random) {
        this.d = directory;
        if (random == null) {
            this.random = new Random();
        } else {
            this.random = random;
        }
    }

    public void writeSingleDoc(Document document) throws IOException {
        try (IndexWriter iw = new IndexWriter(this.d, this.getIwc())) {
            iw.addDocument(document);
            iw.commit();
        }
    }

    public String randomString(int words) {
        StringBuilder ret = new StringBuilder();
        for (int i = 0; i < words; ++i) {
            ret.append(WORDS.get(this.random.nextInt(WORDS.size()))).append(" ");
        }
        return ret.toString();
    }

    public String repeat(String str, int count) {
        StringBuilder builder = new StringBuilder();
        for (int i = 0; i < count; ++i) {
            builder.append(str);
        }
        return builder.toString();
    }

    public void clearIndex() throws IOException {
        System.out.println("clearing index");
        {
            WhitespaceAnalyzer analyzer = new WhitespaceAnalyzer();

            IndexWriterConfig iwc = new IndexWriterConfig(analyzer);
            try (IndexWriter iw = new IndexWriter(this.d, iwc)) {
                iw.deleteAll();
            }
        }
    }

    public void assertHits(Query query, int hitCount) throws IOException {
        try (IndexReader ir = DirectoryReader.open(d)) {
            IndexSearcher searcher = new IndexSearcher(ir);
            TopDocs td = searcher.search(query, 10);
            assertEquals("hitCount didn't match expected hit count", hitCount, td.totalHits);
        }
    }

    public void setupBackRefData() throws IOException {
        this.clearIndex();

        System.out.println("writing into index");
        WhitespaceAnalyzer analyzer = new WhitespaceAnalyzer();

        IndexWriterConfig iwc = new IndexWriterConfig(analyzer);
        try (IndexWriter iw = new IndexWriter(this.d, iwc)) {

            for (int i = 0; i < BACK_REF_DOC_COUNT; ++i) {
                Document doc = createDocument();
                int repeatCount = random.nextInt(100) + 1;
                Field idField = new Field("id", String.valueOf(i), ID_FIELD_TYPE);
                Field field = new Field("tag", randomString(WORD_COUNT_PER_DOCUMENT) + " "
                        + repeat("a", repeatCount) + "b" + repeat("a", repeatCount), TAGS_FIELD_TYPE);
                doc.add(field);
                doc.add(idField);
                iw.addDocument(doc);
                if (i % 100 == 0) {
                    System.out.println(i);
                }

            }
            iw.commit();
        }
        System.out.println("finished setting up index data");
    }

    public IndexWriterConfig getIwc() {
        WhitespaceAnalyzer analyzer = new WhitespaceAnalyzer();
        return new IndexWriterConfig(analyzer);
    }
}