org.elasticsearch.painless.SimilarityScriptTests.java Source code

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Here is the source code for org.elasticsearch.painless.SimilarityScriptTests.java

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/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch 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.painless;

import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field.Store;
import org.apache.lucene.document.StringField;
import org.apache.lucene.document.TextField;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.BooleanClause.Occur;
import org.apache.lucene.search.BooleanQuery;
import org.apache.lucene.search.BoostQuery;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.RAMDirectory;
import org.elasticsearch.index.similarity.ScriptedSimilarity;
import org.elasticsearch.script.ScriptContext;
import org.elasticsearch.script.SimilarityScript;
import org.elasticsearch.script.SimilarityWeightScript;

import java.io.IOException;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;

public class SimilarityScriptTests extends ScriptTestCase {

    @Override
    protected Collection<ScriptContext<?>> scriptContexts() {
        return Arrays.asList(SimilarityScript.CONTEXT, SimilarityWeightScript.CONTEXT);
    }

    public void testBasics() throws IOException {
        SimilarityScript.Factory factory = scriptEngine.compile("foobar",
                "return query.boost * doc.freq / doc.length", SimilarityScript.CONTEXT, Collections.emptyMap());
        ScriptedSimilarity sim = new ScriptedSimilarity("foobar", null, "foobaz", factory::newInstance, true);
        Directory dir = new RAMDirectory();
        IndexWriter w = new IndexWriter(dir, newIndexWriterConfig().setSimilarity(sim));

        Document doc = new Document();
        doc.add(new TextField("f", "foo bar", Store.NO));
        doc.add(new StringField("match", "no", Store.NO));
        w.addDocument(doc);

        doc = new Document();
        doc.add(new TextField("f", "foo foo bar", Store.NO));
        doc.add(new StringField("match", "yes", Store.NO));
        w.addDocument(doc);

        doc = new Document();
        doc.add(new TextField("f", "bar", Store.NO));
        doc.add(new StringField("match", "no", Store.NO));
        w.addDocument(doc);

        IndexReader r = DirectoryReader.open(w);
        w.close();
        IndexSearcher searcher = new IndexSearcher(r);
        searcher.setSimilarity(sim);
        Query query = new BoostQuery(
                new BooleanQuery.Builder().add(new TermQuery(new Term("f", "foo")), Occur.SHOULD)
                        .add(new TermQuery(new Term("match", "yes")), Occur.FILTER).build(),
                3.2f);
        TopDocs topDocs = searcher.search(query, 1);
        assertEquals(1, topDocs.totalHits);
        assertEquals((float) (3.2 * 2 / 3), topDocs.scoreDocs[0].score, 0);
        w.close();
        dir.close();
    }

    public void testWeightScript() throws IOException {
        SimilarityWeightScript.Factory weightFactory = scriptEngine.compile("foobar", "return query.boost",
                SimilarityWeightScript.CONTEXT, Collections.emptyMap());
        SimilarityScript.Factory factory = scriptEngine.compile("foobar", "return weight * doc.freq / doc.length",
                SimilarityScript.CONTEXT, Collections.emptyMap());
        ScriptedSimilarity sim = new ScriptedSimilarity("foobar", weightFactory::newInstance, "foobaz",
                factory::newInstance, true);
        Directory dir = new RAMDirectory();
        IndexWriter w = new IndexWriter(dir, newIndexWriterConfig().setSimilarity(sim));

        Document doc = new Document();
        doc.add(new TextField("f", "foo bar", Store.NO));
        doc.add(new StringField("match", "no", Store.NO));
        w.addDocument(doc);

        doc = new Document();
        doc.add(new TextField("f", "foo foo bar", Store.NO));
        doc.add(new StringField("match", "yes", Store.NO));
        w.addDocument(doc);

        doc = new Document();
        doc.add(new TextField("f", "bar", Store.NO));
        doc.add(new StringField("match", "no", Store.NO));
        w.addDocument(doc);

        IndexReader r = DirectoryReader.open(w);
        w.close();
        IndexSearcher searcher = new IndexSearcher(r);
        searcher.setSimilarity(sim);
        Query query = new BoostQuery(
                new BooleanQuery.Builder().add(new TermQuery(new Term("f", "foo")), Occur.SHOULD)
                        .add(new TermQuery(new Term("match", "yes")), Occur.FILTER).build(),
                3.2f);
        TopDocs topDocs = searcher.search(query, 1);
        assertEquals(1, topDocs.totalHits);
        assertEquals((float) (3.2 * 2 / 3), topDocs.scoreDocs[0].score, 0);
        w.close();
        dir.close();
    }
}