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annotate lucene/src/luan/modules/lucene/LuceneIndex.java @ 232:9ce18106f95a

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more lucene work git-svn-id: https://luan-java.googlecode.com/svn/trunk@233 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Wed, 01 Oct 2014 06:55:14 +0000
parents 4438cb2e04d0
children ef39bc4d3f70
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rev   line source
230
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
1 package luan.modules.lucene;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
2
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
3 import java.io.File;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
4 import java.io.FileOutputStream;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
5 import java.io.FileInputStream;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
6 import java.io.IOException;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
7 import java.util.concurrent.locks.Lock;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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8 import java.util.concurrent.locks.ReentrantLock;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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9 import java.util.zip.ZipOutputStream;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
10 import java.util.zip.ZipEntry;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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11 import org.apache.lucene.analysis.Analyzer;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
12 import org.apache.lucene.analysis.standard.StandardAnalyzer;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
13 import org.apache.lucene.index.IndexWriter;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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14 import org.apache.lucene.index.IndexWriterConfig;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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15 import org.apache.lucene.index.DirectoryReader;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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16 import org.apache.lucene.index.Term;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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17 import org.apache.lucene.index.SnapshotDeletionPolicy;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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18 import org.apache.lucene.store.Directory;
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19 import org.apache.lucene.store.FSDirectory;
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20 import org.apache.lucene.util.Version;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
21 import org.apache.lucene.search.TermQuery;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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22 import org.apache.lucene.search.TopDocs;
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23 import luan.modules.Utils;
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24 import luan.Luan;
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25 import luan.LuanState;
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26 import luan.LuanTable;
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27 import luan.LuanFunction;
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28 import luan.LuanJavaFunction;
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29 import luan.LuanException;
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30
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31
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32 public final class LuceneIndex {
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33 private static final String FLD_TYPE = LuceneWriter.FLD_TYPE;
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34 private static final String FLD_NEXT_ID = "nextId";
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35
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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36 final Lock writeLock = new ReentrantLock();
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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37 private final File indexDir;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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38 final SnapshotDeletionPolicy snapshotDeletionPolicy;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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39 final IndexWriter writer;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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40 private DirectoryReader reader;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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41 private LuceneSearcher searcher;
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42
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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43 public LuceneIndex(String indexDirStr) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
44 try {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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45 File indexDir = new File(indexDirStr);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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46 this.indexDir = indexDir;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
47 Directory dir = FSDirectory.open(indexDir);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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48 Version version = Version.LUCENE_4_9;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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49 Analyzer analyzer = new StandardAnalyzer(version);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
50 IndexWriterConfig conf = new IndexWriterConfig(version,analyzer);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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51 snapshotDeletionPolicy = new SnapshotDeletionPolicy(conf.getIndexDeletionPolicy());
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52 conf.setIndexDeletionPolicy(snapshotDeletionPolicy);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
53 writer = new IndexWriter(dir,conf);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
54 writer.commit(); // commit index creation
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
55 reader = DirectoryReader.open(dir);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
56 searcher = new LuceneSearcher(reader);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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57 initId();
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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58 } catch(IOException e) {
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59 throw new RuntimeException(e);
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60 }
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61 }
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62
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63 public LuceneWriter openWriter() {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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64 return new LuceneWriter(this);
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65 }
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66
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67 public synchronized LuceneSearcher openSearcher() {
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68 try {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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69 DirectoryReader newReader = DirectoryReader.openIfChanged(reader);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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70 if( newReader != null ) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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71 reader.decRef();
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72 reader = newReader;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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73 searcher = new LuceneSearcher(reader);
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74 }
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75 reader.incRef();
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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76 return searcher;
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77 } catch(IOException e) {
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78 throw new RuntimeException(e);
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79 }
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80 }
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81
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82 public LuceneSnapshot openSnapshot() {
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83 return new LuceneSnapshot(this);
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84 }
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85
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86
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87 private long id = 0;
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88 private long idLim = 0;
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89 private final int idBatch = 10;
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90
232
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parents: 230
diff changeset
91 private void initId() throws IOException {
230
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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92 TopDocs td = searcher.search(new TermQuery(new Term(FLD_TYPE,"next_id")),1);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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93 switch(td.totalHits) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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94 case 0:
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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95 break; // do nothing
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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96 case 1:
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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97 LuanTable doc = searcher.doc(td.scoreDocs[0].doc);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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98 idLim = (Long)doc.get(FLD_NEXT_ID);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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99 id = idLim;
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parents:
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100 break;
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101 default:
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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102 throw new RuntimeException();
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103 }
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104 }
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105
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106 synchronized String nextId() {
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107 try {
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108 String rtn = Long.toString(++id);
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parents:
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109 if( id > idLim ) {
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parents:
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110 idLim += idBatch;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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111 LuanTable doc = Luan.newTable();
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112 doc.put( FLD_TYPE, "next_id" );
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113 doc.put( FLD_NEXT_ID, idLim );
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114 writer.updateDocument(new Term(FLD_TYPE,"next_id"),LuceneDocument.toLucene(doc));
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115 }
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116 return rtn;
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117 } catch(IOException e) {
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118 throw new RuntimeException(e);
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119 }
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120 }
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121
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122
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123 public void backup(String zipFile) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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124 if( !zipFile.endsWith(".zip") )
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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125 throw new RuntimeException("file "+zipFile+" doesn't end with '.zip'");
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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126 LuceneSnapshot snapshot = openSnapshot();
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127 try {
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128 ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFile));
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129 for( String fileName : snapshot.getFileNames() ) {
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130 out.putNextEntry(new ZipEntry(fileName));
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131 FileInputStream in = new FileInputStream(new File(indexDir,fileName));
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132 Utils.copyAll(in,out);
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133 in.close();
4438cb2e04d0 start lucene
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134 out.closeEntry();
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135 }
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136 out.close();
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parents:
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137 } catch(IOException e) {
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138 throw new RuntimeException(e);
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parents:
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139 } finally {
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140 snapshot.close();
4438cb2e04d0 start lucene
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141 }
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142 }
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143
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144
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145
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146 // luan
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147
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148 public String to_string() {
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149 return writer.getDirectory().toString();
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150 }
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151
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152 public void Writer(LuanState luan,LuanFunction fn) throws LuanException, IOException {
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153 LuceneWriter writer = openWriter();
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diff changeset
154 try {
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parents:
diff changeset
155 luan.call( fn, new Object[]{writer.table()} );
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156 writer.commit();
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157 } finally {
4438cb2e04d0 start lucene
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parents:
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158 writer.close();
4438cb2e04d0 start lucene
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159 }
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160 }
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parents:
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161
232
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parents: 230
diff changeset
162 public void Searcher(LuanState luan,LuanFunction fn) throws LuanException, IOException {
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parents: 230
diff changeset
163 LuceneSearcher searcher = openSearcher();
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parents: 230
diff changeset
164 try {
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parents: 230
diff changeset
165 luan.call( fn, new Object[]{searcher.table()} );
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parents: 230
diff changeset
166 } finally {
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parents: 230
diff changeset
167 searcher.close();
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parents: 230
diff changeset
168 }
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parents: 230
diff changeset
169 }
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parents: 230
diff changeset
170
230
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
171 private void add(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException {
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
172 t.put( method, new LuanJavaFunction(LuceneIndex.class.getMethod(method,parameterTypes),this) );
4438cb2e04d0 start lucene
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parents:
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173 }
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174
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175 public LuanTable table() {
4438cb2e04d0 start lucene
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parents:
diff changeset
176 LuanTable tbl = Luan.newTable();
4438cb2e04d0 start lucene
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parents:
diff changeset
177 try {
4438cb2e04d0 start lucene
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parents:
diff changeset
178 add( tbl, "to_string" );
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
179 add( tbl, "backup", String.class );
232
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parents: 230
diff changeset
180 add( tbl, "Writer", LuanState.class, LuanFunction.class );
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parents: 230
diff changeset
181 add( tbl, "Searcher", LuanState.class, LuanFunction.class );
230
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parents:
diff changeset
182 } catch(NoSuchMethodException e) {
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
183 throw new RuntimeException(e);
4438cb2e04d0 start lucene
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parents:
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184 }
4438cb2e04d0 start lucene
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parents:
diff changeset
185 return tbl;
4438cb2e04d0 start lucene
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parents:
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186 }
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187
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188 }