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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (GORA-266) Lucene datastore for Gora
Date Thu, 15 Mar 2018 15:53:01 GMT

    [ https://issues.apache.org/jira/browse/GORA-266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16400603#comment-16400603
] 

ASF GitHub Bot commented on GORA-266:
-------------------------------------

Github user renato2099 commented on a diff in the pull request:

    https://github.com/apache/gora/pull/131#discussion_r174718538
  
    --- Diff: gora-lucene/src/main/java/org/apache/gora/lucene/query/LuceneResult.java ---
    @@ -0,0 +1,122 @@
    +/**
    + * 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.
    + */
    +package org.apache.gora.lucene.query;
    +
    +import com.google.common.primitives.Ints;
    +import org.apache.gora.lucene.store.LuceneStore;
    +import org.apache.gora.persistency.impl.PersistentBase;
    +import org.apache.gora.query.Query;
    +import org.apache.gora.query.impl.PartitionQueryImpl;
    +import org.apache.gora.query.impl.ResultBase;
    +import org.apache.gora.store.DataStore;
    +import org.apache.lucene.document.Document;
    +import org.apache.lucene.search.IndexSearcher;
    +import org.apache.lucene.search.ScoreDoc;
    +import org.apache.lucene.search.SearcherManager;
    +
    +import java.io.IOException;
    +import java.util.Arrays;
    +import java.util.Collection;
    +import java.util.HashSet;
    +import java.util.Set;
    +
    +public class LuceneResult<K, T extends PersistentBase> extends ResultBase<K,
T> {
    +
    +  private ScoreDoc[] scoreDocs = null;
    +  private final LuceneStore<K, T> store;
    +  private String[] fields;
    +  private int pos = 0;
    +  private final SearcherManager searcherManager;
    +  private IndexSearcher searcher;
    +
    +  public LuceneResult(DataStore<K, T> dataStore, Query<K, T> query,
    +      SearcherManager sm) throws IOException {
    +    super(dataStore, query);
    +
    +    searcherManager = sm;
    +    store = (LuceneStore<K, T>)dataStore;
    +    if (query instanceof PartitionQueryImpl) {
    +      query = ((PartitionQueryImpl<K, T>)query).getBaseQuery();
    +    }
    +    fields = query.getFields();
    +    if (fields != null) {
    +      HashSet<String> uniqFields = new HashSet<>(Arrays.asList(fields));
    +      String keyFld = ((LuceneStore<K, T>)dataStore).getMapping().getPrimaryKey();
    +      uniqFields.add(keyFld); // return also primary key
    +      query.setFields(fields);
    +    }
    +    else {
    +      Collection<String> c = ((LuceneStore<K, T>)dataStore).getMapping().getLuceneFields();
    --- End diff --
    
    same here.


> Lucene datastore for Gora
> -------------------------
>
>                 Key: GORA-266
>                 URL: https://issues.apache.org/jira/browse/GORA-266
>             Project: Apache Gora
>          Issue Type: New Feature
>          Components: gora-lucene
>            Reporter: Lewis John McGibbney
>            Assignee: Lewis John McGibbney
>            Priority: Minor
>              Labels: features
>             Fix For: 0.9
>
>         Attachments: GORA-266.patch
>
>
> Sometimes we don't need to set up, administer, maintain and configure a running solr
server(s).
> Sometime we just want to write to Lucene index files and read directly from them. 



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