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annotate lucene/src/luan/modules/lucene/LuceneIndex.java @ 527:ef0336efe33c

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minor
author Franklin Schmidt <fschmidt@gmail.com>
date Wed, 27 May 2015 03:29:04 -0600
parents 70bda9184158
children c5a93767cc5c
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1 package luan.modules.lucene;
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2
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3 import java.io.Closeable;
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4 import java.io.File;
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5 import java.io.FileOutputStream;
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6 import java.io.FileInputStream;
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7 import java.io.IOException;
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8 import java.util.concurrent.locks.Lock;
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9 import java.util.concurrent.locks.ReentrantLock;
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10 import java.util.zip.ZipOutputStream;
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11 import java.util.zip.ZipEntry;
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12 import org.apache.lucene.analysis.Analyzer;
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13 import org.apache.lucene.analysis.standard.StandardAnalyzer;
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14 import org.apache.lucene.document.Document;
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15 import org.apache.lucene.index.IndexWriter;
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16 import org.apache.lucene.index.IndexWriterConfig;
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17 import org.apache.lucene.index.DirectoryReader;
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18 import org.apache.lucene.index.Term;
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19 import org.apache.lucene.index.SnapshotDeletionPolicy;
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20 import org.apache.lucene.store.Directory;
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21 import org.apache.lucene.store.FSDirectory;
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22 import org.apache.lucene.util.Version;
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23 import org.apache.lucene.search.Query;
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24 import org.apache.lucene.search.TermQuery;
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25 import org.apache.lucene.search.TopDocs;
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26 import org.apache.lucene.queryparser.flexible.standard.StandardQueryParser;
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27 import org.apache.lucene.queryparser.flexible.core.QueryNodeException;
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28 import luan.modules.Utils;
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29 import luan.Luan;
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30 import luan.LuanState;
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31 import luan.LuanTable;
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32 import luan.LuanFunction;
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33 import luan.LuanJavaFunction;
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34 import luan.LuanException;
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35 import org.slf4j.Logger;
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36 import org.slf4j.LoggerFactory;
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38
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39 public final class LuceneIndex implements Closeable {
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40 private static final Logger logger = LoggerFactory.getLogger(LuceneIndex.class);
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41
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42 private static final String FLD_NEXT_ID = "nextId";
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44 final Lock writeLock = new ReentrantLock();
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45 private final File indexDir;
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46 final SnapshotDeletionPolicy snapshotDeletionPolicy;
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47 final IndexWriter writer;
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48 private DirectoryReader reader;
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49 private LuceneSearcher searcher;
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50 public final FieldTable fields = new FieldTable();
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51 private boolean isClosed = false;
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52
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53 public LuceneIndex(LuanState luan,String indexDirStr) throws LuanException, IOException {
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54 File indexDir = new File(indexDirStr);
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55 this.indexDir = indexDir;
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56 Directory dir = FSDirectory.open(indexDir);
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57 Version version = Version.LUCENE_4_9;
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58 Analyzer analyzer = new StandardAnalyzer(version);
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59 IndexWriterConfig conf = new IndexWriterConfig(version,analyzer);
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60 snapshotDeletionPolicy = new SnapshotDeletionPolicy(conf.getIndexDeletionPolicy());
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61 conf.setIndexDeletionPolicy(snapshotDeletionPolicy);
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62 writer = new IndexWriter(dir,conf);
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63 writer.commit(); // commit index creation
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64 reader = DirectoryReader.open(dir);
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65 luan.onClose(this);
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66 searcher = new LuceneSearcher(this,reader);
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67 initId(luan);
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68 }
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70 Document toLucene(LuanState luan,LuanTable table) throws LuanException {
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71 return LuceneDocument.toLucene(luan,table,fields.map);
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72 }
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74 LuanTable toTable(LuanState luan,Document doc) throws LuanException {
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75 return LuceneDocument.toTable(luan,doc,fields.reverseMap);
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76 }
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78 public String map_field_name(String fld) {
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79 String s = fields.map.get(fld);
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80 return s!=null ? s : fld;
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81 }
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82
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83 Term newTerm(String fld,String text) {
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84 return new Term(map_field_name(fld),text);
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85 }
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87 public LuceneWriter openWriter() {
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88 return new LuceneWriter(this);
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89 }
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90
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91 synchronized LuceneSearcher openSearcher() throws IOException {
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92 DirectoryReader newReader = DirectoryReader.openIfChanged(reader);
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93 if( newReader != null ) {
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94 reader.decRef();
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95 reader = newReader;
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96 searcher = new LuceneSearcher(this,reader);
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97 }
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98 reader.incRef();
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99 return searcher;
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100 }
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101
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102 LuceneSnapshot openSnapshot() throws IOException {
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103 return new LuceneSnapshot(this);
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parents:
diff changeset
104 }
4438cb2e04d0 start lucene
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parents:
diff changeset
105
252
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parents: 233
diff changeset
106 public void delete_all() throws IOException {
3896138955b1 web testing...
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parents: 233
diff changeset
107 writeLock.lock();
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parents: 233
diff changeset
108 try {
3896138955b1 web testing...
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parents: 233
diff changeset
109 writer.deleteAll();
3896138955b1 web testing...
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parents: 233
diff changeset
110 writer.commit();
3896138955b1 web testing...
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parents: 233
diff changeset
111 id = idLim = 0;
3896138955b1 web testing...
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parents: 233
diff changeset
112 } finally {
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parents: 233
diff changeset
113 writeLock.unlock();
3896138955b1 web testing...
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parents: 233
diff changeset
114 }
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parents: 233
diff changeset
115 }
3896138955b1 web testing...
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parents: 233
diff changeset
116
230
4438cb2e04d0 start lucene
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parents:
diff changeset
117
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parents:
diff changeset
118 private long id = 0;
4438cb2e04d0 start lucene
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parents:
diff changeset
119 private long idLim = 0;
4438cb2e04d0 start lucene
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parents:
diff changeset
120 private final int idBatch = 10;
4438cb2e04d0 start lucene
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parents:
diff changeset
121
233
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parents: 232
diff changeset
122 private void initId(LuanState luan) throws LuanException, IOException {
ef39bc4d3f70 basic lucene works
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parents: 232
diff changeset
123 TopDocs td = searcher.search(new TermQuery(newTerm("type","next_id")),1);
230
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
124 switch(td.totalHits) {
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
125 case 0:
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
126 break; // do nothing
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
127 case 1:
233
ef39bc4d3f70 basic lucene works
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parents: 232
diff changeset
128 LuanTable doc = searcher.doc(luan,td.scoreDocs[0].doc);
426
23a93c118042 fix LuanTable.get() to use metatables
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parents: 411
diff changeset
129 idLim = (Long)doc.rawGet(FLD_NEXT_ID);
230
4438cb2e04d0 start lucene
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parents:
diff changeset
130 id = idLim;
4438cb2e04d0 start lucene
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parents:
diff changeset
131 break;
4438cb2e04d0 start lucene
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parents:
diff changeset
132 default:
4438cb2e04d0 start lucene
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parents:
diff changeset
133 throw new RuntimeException();
4438cb2e04d0 start lucene
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parents:
diff changeset
134 }
4438cb2e04d0 start lucene
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parents:
diff changeset
135 }
4438cb2e04d0 start lucene
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parents:
diff changeset
136
233
ef39bc4d3f70 basic lucene works
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parents: 232
diff changeset
137 synchronized String nextId(LuanState luan) throws LuanException, IOException {
ef39bc4d3f70 basic lucene works
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 232
diff changeset
138 String rtn = Long.toString(++id);
ef39bc4d3f70 basic lucene works
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 232
diff changeset
139 if( id > idLim ) {
ef39bc4d3f70 basic lucene works
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 232
diff changeset
140 idLim += idBatch;
411
23b99a5039b5 remove Luan.newTable()
Franklin Schmidt <fschmidt@gmail.com>
parents: 312
diff changeset
141 LuanTable doc = new LuanTable();
427
dae264ad6a7b fix LuanTable.put() to use metatables
Franklin Schmidt <fschmidt@gmail.com>
parents: 426
diff changeset
142 doc.rawPut( "type", "next_id" );
dae264ad6a7b fix LuanTable.put() to use metatables
Franklin Schmidt <fschmidt@gmail.com>
parents: 426
diff changeset
143 doc.rawPut( FLD_NEXT_ID, idLim );
233
ef39bc4d3f70 basic lucene works
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parents: 232
diff changeset
144 writer.updateDocument(newTerm("type","next_id"),toLucene(luan,doc));
230
4438cb2e04d0 start lucene
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parents:
diff changeset
145 }
233
ef39bc4d3f70 basic lucene works
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parents: 232
diff changeset
146 return rtn;
230
4438cb2e04d0 start lucene
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parents:
diff changeset
147 }
4438cb2e04d0 start lucene
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parents:
diff changeset
148
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diff changeset
149
233
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parents: 232
diff changeset
150 public void backup(LuanState luan,String zipFile) throws LuanException, IOException {
230
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
151 if( !zipFile.endsWith(".zip") )
233
ef39bc4d3f70 basic lucene works
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parents: 232
diff changeset
152 throw luan.exception("file "+zipFile+" doesn't end with '.zip'");
230
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
153 LuceneSnapshot snapshot = openSnapshot();
4438cb2e04d0 start lucene
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parents:
diff changeset
154 try {
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
155 ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFile));
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
156 for( String fileName : snapshot.getFileNames() ) {
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
157 out.putNextEntry(new ZipEntry(fileName));
4438cb2e04d0 start lucene
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parents:
diff changeset
158 FileInputStream in = new FileInputStream(new File(indexDir,fileName));
4438cb2e04d0 start lucene
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parents:
diff changeset
159 Utils.copyAll(in,out);
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
160 in.close();
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
161 out.closeEntry();
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
162 }
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
163 out.close();
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
164 } finally {
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
165 snapshot.close();
4438cb2e04d0 start lucene
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parents:
diff changeset
166 }
4438cb2e04d0 start lucene
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parents:
diff changeset
167 }
4438cb2e04d0 start lucene
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parents:
diff changeset
168
4438cb2e04d0 start lucene
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parents:
diff changeset
169
4438cb2e04d0 start lucene
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parents:
diff changeset
170
4438cb2e04d0 start lucene
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parents:
diff changeset
171 // luan
4438cb2e04d0 start lucene
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parents:
diff changeset
172
4438cb2e04d0 start lucene
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parents:
diff changeset
173 public String to_string() {
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
174 return writer.getDirectory().toString();
4438cb2e04d0 start lucene
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parents:
diff changeset
175 }
4438cb2e04d0 start lucene
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parents:
diff changeset
176
4438cb2e04d0 start lucene
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parents:
diff changeset
177 public void Writer(LuanState luan,LuanFunction fn) throws LuanException, IOException {
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
178 LuceneWriter writer = openWriter();
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
179 try {
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
180 luan.call( fn, new Object[]{writer.table()} );
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
181 writer.commit();
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
182 } finally {
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
183 writer.close();
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
184 }
4438cb2e04d0 start lucene
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parents:
diff changeset
185 }
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
186
233
ef39bc4d3f70 basic lucene works
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 232
diff changeset
187 public Object Searcher(LuanState luan,LuanFunction fn) throws LuanException, IOException {
232
9ce18106f95a more lucene work
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 230
diff changeset
188 LuceneSearcher searcher = openSearcher();
9ce18106f95a more lucene work
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 230
diff changeset
189 try {
233
ef39bc4d3f70 basic lucene works
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 232
diff changeset
190 return luan.call( fn, new Object[]{searcher.table()} );
232
9ce18106f95a more lucene work
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parents: 230
diff changeset
191 } finally {
9ce18106f95a more lucene work
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 230
diff changeset
192 searcher.close();
9ce18106f95a more lucene work
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 230
diff changeset
193 }
9ce18106f95a more lucene work
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 230
diff changeset
194 }
9ce18106f95a more lucene work
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 230
diff changeset
195
303
fdb4bd391c28 add lucene close();
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 287
diff changeset
196 public void close() throws IOException {
521
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
197 if( !isClosed ) {
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
198 writer.close();
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
199 reader.close();
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
200 isClosed = true;
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
201 }
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
202 }
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
203
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
204 protected void finalize() throws Throwable {
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
205 if( !isClosed ) {
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
206 logger.error("not closed");
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
207 close();
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
208 }
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
209 super.finalize();
230
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
210 }
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
211
312
d34be4588556 add lucene query parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 303
diff changeset
212
d34be4588556 add lucene query parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 303
diff changeset
213 public Query parse(String s) throws QueryNodeException {
d34be4588556 add lucene query parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 303
diff changeset
214 StandardQueryParser qp = new StandardQueryParser();
d34be4588556 add lucene query parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 303
diff changeset
215 qp.setQueryNodeProcessor(new LuanQueryNodeProcessor(this,qp.getQueryNodeProcessor()));
d34be4588556 add lucene query parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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216 return qp.parse(s,null);
d34be4588556 add lucene query parsing
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parents: 303
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217 }
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parents: 303
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218
230
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219 }