eclipse/eclipse-lucene-4.patch

From f93bcfb45708895f90396552677f11881f342dc9 Mon Sep 17 00:00:00 2001
From: Mat Booth <mat.booth@redhat.com>
Date: Wed, 4 Mar 2015 15:10:27 +0000
Subject: [PATCH] Port to Lucene 4.

---
 org.eclipse.help.base/META-INF/MANIFEST.MF         |  4 +-
 .../eclipse/help/internal/search/Analyzer_en.java  | 27 +++++---
 .../help/internal/search/DefaultAnalyzer.java      | 13 ++--
 .../search/LowerCaseAndDigitsTokenizer.java        |  7 +-
 .../eclipse/help/internal/search/QueryBuilder.java | 15 +++-
 .../eclipse/help/internal/search/SearchIndex.java  | 81 ++++++++++------------
 .../help/internal/search/SmartAnalyzer.java        | 14 ++--
 .../help/internal/search/WordTokenStream.java      |  2 +
 org.eclipse.ua.tests/META-INF/MANIFEST.MF          |  7 +-
 .../help/search/PrebuiltIndexCompatibility.java    |  6 +-
 10 files changed, 94 insertions(+), 82 deletions(-)

diff --git a/eclipse.platform.ua/org.eclipse.help.base/META-INF/MANIFEST.MF b/eclipse.platform.ua/org.eclipse.help.base/META-INF/MANIFEST.MF
index ee34c8e..fdef3e6 100644
--- a/eclipse.platform.ua/org.eclipse.help.base/META-INF/MANIFEST.MF
+++ b/eclipse.platform.ua/org.eclipse.help.base/META-INF/MANIFEST.MF
@@ -43,8 +43,8 @@ Require-Bundle: org.eclipse.ant.core;bundle-version="3.2.200";resolution:=option
  org.eclipse.core.runtime;bundle-version="[3.11.0,4.0.0)",
  org.eclipse.help;bundle-version="[3.5.0,4.0.0)";visibility:=reexport,
  org.eclipse.core.expressions;bundle-version="[3.4.200,4.0.0)",
- org.apache.lucene.analysis;bundle-version="[3.5.0,4.0.0)",
- org.apache.lucene.core;bundle-version="[3.5.0,4.0.0)",
+ org.apache.lucene.analysis;bundle-version="[4.7.0,5.0.0)",
+ org.apache.lucene.core;bundle-version="[4.7.0,5.0.0)",
  org.eclipse.core.net;bundle-version="1.2.200"
 Import-Package: com.ibm.icu.text,
  org.eclipse.equinox.http.jetty;resolution:=optional
diff --git a/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/Analyzer_en.java b/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/Analyzer_en.java
index a066aa4..6c41103 100644
--- a/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/Analyzer_en.java
+++ b/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/Analyzer_en.java
@@ -11,10 +11,15 @@
  *******************************************************************************/
 package org.eclipse.help.internal.search;
 import java.io.*;
-import java.util.HashSet;
-import java.util.Set;
+import java.util.ArrayList;
+import java.util.List;
 
-import org.apache.lucene.analysis.*;
+import org.apache.lucene.analysis.Analyzer;
+import org.apache.lucene.analysis.TokenStream;
+import org.apache.lucene.analysis.Tokenizer;
+import org.apache.lucene.analysis.core.StopFilter;
+import org.apache.lucene.analysis.en.PorterStemFilter;
+import org.apache.lucene.analysis.util.CharArraySet;
 import org.apache.lucene.util.Version;
 /**
  * Lucene Analyzer for English. LowerCaseTokenizer->StopFilter->PorterStemFilter
@@ -27,18 +32,22 @@ public final class Analyzer_en extends Analyzer {
 		super();
 	}
 	/**
-	 * Creates a TokenStream which tokenizes all the text in the provided
+	 * Creates a TokenStreamComponents which tokenizes all the text in the provided
 	 * Reader.
 	 */
-	public final TokenStream tokenStream(String fieldName, Reader reader) {
-		return new PorterStemFilter(new StopFilter(Version.LUCENE_30, new LowerCaseAndDigitsTokenizer(reader), getStopWords(), false));
+	@Override
+	public final TokenStreamComponents createComponents(String fieldName, Reader reader) {
+		CharArraySet stopWordsSet = StopFilter.makeStopSet(Version.LUCENE_47, getStopWords(), true);
+		Tokenizer source = new LowerCaseAndDigitsTokenizer(reader);
+		TokenStream filter = new PorterStemFilter(new StopFilter(Version.LUCENE_47, source, stopWordsSet));
+		return new TokenStreamComponents(source, filter);
 	}
 
-	private Set<String> stopWords;
+	private List<String> stopWords;
 
-	private Set<String> getStopWords() {
+	private List<String> getStopWords() {
 		if ( stopWords == null ) {
-			stopWords = new HashSet<String>();
+			stopWords = new ArrayList<String>();
 			for (int i = 0; i < STOP_WORDS.length; i++) {
 			    stopWords.add(STOP_WORDS[i]);
 			}
diff --git a/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/DefaultAnalyzer.java b/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/DefaultAnalyzer.java
index 4109474..2718307 100644
--- a/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/DefaultAnalyzer.java
+++ b/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/DefaultAnalyzer.java
@@ -17,8 +17,8 @@ import java.util.StringTokenizer;
 import com.ibm.icu.text.BreakIterator;
 
 import org.apache.lucene.analysis.Analyzer;
-import org.apache.lucene.analysis.LowerCaseFilter;
-import org.apache.lucene.analysis.TokenStream;
+import org.apache.lucene.analysis.Tokenizer;
+import org.apache.lucene.analysis.core.LowerCaseFilter;
 import org.apache.lucene.util.Version;
 import org.eclipse.help.internal.base.HelpBasePlugin;
 
@@ -84,11 +84,14 @@ public final class DefaultAnalyzer extends Analyzer {
 	}
 
 	/**
-	 * Creates a TokenStream which tokenizes all the text in the provided
+	 * Creates a TokenStreamComponents which tokenizes all the text in the provided
 	 * Reader.
 	 */
-	public final TokenStream tokenStream(String fieldName, Reader reader) {
-		return new LowerCaseFilter(Version.LUCENE_30, new WordTokenStream(fieldName, reader, locale));
+	@Override
+	public final TokenStreamComponents createComponents(String fieldName, Reader reader) {
+		Tokenizer source = new WordTokenStream(fieldName, reader, locale);
+		LowerCaseFilter filter = new LowerCaseFilter(Version.LUCENE_47, source);
+		return new TokenStreamComponents(source, filter);
 	}
 
 	/**
diff --git a/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/LowerCaseAndDigitsTokenizer.java b/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/LowerCaseAndDigitsTokenizer.java
index a475688..91e3cb4 100644
--- a/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/LowerCaseAndDigitsTokenizer.java
+++ b/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/LowerCaseAndDigitsTokenizer.java
@@ -13,7 +13,7 @@ package org.eclipse.help.internal.search;
 
 import java.io.*;
 
-import org.apache.lucene.analysis.*;
+import org.apache.lucene.analysis.util.CharTokenizer;
 import org.apache.lucene.util.Version;
 
 /**
@@ -22,13 +22,14 @@ import org.apache.lucene.util.Version;
 public class LowerCaseAndDigitsTokenizer extends CharTokenizer {
 
     public LowerCaseAndDigitsTokenizer(Reader input) {
-        super(Version.LUCENE_30, input);
+        super(Version.LUCENE_47, input);
     }
     protected char normalize(char c) {
         return Character.toLowerCase(c);
     }
 
-    protected boolean isTokenChar(char c) {
+    @Override
+    public boolean isTokenChar(int c) {
         return Character.isLetterOrDigit(c);
     }
 
diff --git a/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/QueryBuilder.java b/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/QueryBuilder.java
index 9cc690e..6449adb 100644
--- a/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/QueryBuilder.java
+++ b/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/QueryBuilder.java
@@ -243,16 +243,25 @@ public class QueryBuilder {
 	private List<String> analyzeText(Analyzer analyzer, String fieldName, String text) {
 		List<String> words = new ArrayList<String>(1);
 		Reader reader = new StringReader(text);
-		TokenStream tStream = analyzer.tokenStream(fieldName, reader);
 
-		CharTermAttribute termAttribute = tStream.getAttribute(CharTermAttribute.class);
+		TokenStream tStream = null;
 		try {
+			tStream = analyzer.tokenStream(fieldName, reader);
+			tStream.reset();
+			CharTermAttribute termAttribute = (CharTermAttribute) tStream
+					.getAttribute(CharTermAttribute.class);
 			while (tStream.incrementToken()) {
 				String term = termAttribute.toString();
 				words.add(term);
 			}
-			reader.close();
 		} catch (IOException ioe) {
+		} finally {
+			if (tStream != null) {
+				try {
+					tStream.close();
+				} catch (IOException e) {
+				}
+			}
 		}
 
 		return words;
diff --git a/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/SearchIndex.java b/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/SearchIndex.java
index 33c9476..5a46fe5 100644
--- a/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/SearchIndex.java
+++ b/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/SearchIndex.java
@@ -33,17 +33,20 @@ import java.util.Set;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipInputStream;
 
-import org.apache.lucene.analysis.LimitTokenCountAnalyzer;
+import org.apache.lucene.analysis.miscellaneous.LimitTokenCountAnalyzer;
 import org.apache.lucene.document.Document;
 import org.apache.lucene.document.Field;
+import org.apache.lucene.index.AtomicReader;
+import org.apache.lucene.index.DirectoryReader;
+import org.apache.lucene.index.DocsEnum;
 import org.apache.lucene.index.IndexReader;
 import org.apache.lucene.index.IndexWriter;
-import org.apache.lucene.index.Term;
-import org.apache.lucene.index.TermDocs;
 import org.apache.lucene.index.IndexWriterConfig.OpenMode;
 import org.apache.lucene.index.IndexWriterConfig;
 import org.apache.lucene.index.LogByteSizeMergePolicy;
 import org.apache.lucene.index.LogMergePolicy;
+import org.apache.lucene.index.SlowCompositeReaderWrapper;
+import org.apache.lucene.index.Term;
 import org.apache.lucene.search.BooleanQuery;
 import org.apache.lucene.search.IndexSearcher;
 import org.apache.lucene.search.Query;
@@ -283,7 +286,7 @@ public class SearchIndex implements IHelpSearchIndex {
 			indexedDocs.restore();
 			setInconsistent(true);
 			LimitTokenCountAnalyzer analyzer = new LimitTokenCountAnalyzer(analyzerDescriptor.getAnalyzer(), 1000000);
-			IndexWriterConfig writerConfig = new IndexWriterConfig(org.apache.lucene.util.Version.LUCENE_31, analyzer);
+			IndexWriterConfig writerConfig = new IndexWriterConfig(org.apache.lucene.util.Version.LUCENE_47, analyzer);
 			writerConfig.setOpenMode(create ? OpenMode.CREATE : OpenMode.APPEND);
 			LogMergePolicy mergePolicy = new LogByteSizeMergePolicy();
 			mergePolicy.setMergeFactor(20);
@@ -307,7 +310,7 @@ public class SearchIndex implements IHelpSearchIndex {
 			indexedDocs = new HelpProperties(INDEXED_DOCS_FILE, indexDir);
 			indexedDocs.restore();
 			setInconsistent(true);
-			ir = IndexReader.open(luceneDirectory, false);
+			ir = DirectoryReader.open(luceneDirectory);
 			return true;
 		} catch (IOException e) {
 			HelpBasePlugin.logError("Exception occurred in search indexing at beginDeleteBatch.", e); //$NON-NLS-1$
@@ -323,7 +326,7 @@ public class SearchIndex implements IHelpSearchIndex {
 			if (ir != null) {
 				ir.close();
 			}
-			ir = IndexReader.open(luceneDirectory, false);
+			ir = DirectoryReader.open(luceneDirectory);
 			return true;
 		} catch (IOException e) {
 			HelpBasePlugin.logError("Exception occurred in search indexing at beginDeleteBatch.", e); //$NON-NLS-1$
@@ -341,7 +344,7 @@ public class SearchIndex implements IHelpSearchIndex {
 	public IStatus removeDocument(String name) {
 		Term term = new Term(FIELD_NAME, name);
 		try {
-			ir.deleteDocuments(term);
+			iw.deleteDocuments(term);
 			indexedDocs.remove(name);
 		} catch (IOException e) {
 			return new Status(IStatus.ERROR, HelpBasePlugin.PLUGIN_ID, IStatus.ERROR,
@@ -379,7 +382,7 @@ public class SearchIndex implements IHelpSearchIndex {
 			 * know about this change. Close it so that it gets reloaded next search.
 			 */
 			if (searcher != null) {
-				searcher.close();
+				searcher.getIndexReader().close();
 				searcher = null;
 			}
 			return true;
@@ -411,7 +414,7 @@ public class SearchIndex implements IHelpSearchIndex {
 			 * know about this change. Close it so that it gets reloaded next search.
 			 */
 			if (searcher != null) {
-				searcher.close();
+				searcher.getIndexReader().close();
 				searcher = null;
 			}
 			return true;
@@ -525,18 +528,19 @@ public class SearchIndex implements IHelpSearchIndex {
 	}
 
 	public IStatus removeDuplicates(String name, String[] index_paths) {
-		TermDocs hrefDocs = null;
-		TermDocs indexDocs = null;
-		Term hrefTerm = new Term(FIELD_NAME, name);
 		try {
+			AtomicReader ar = SlowCompositeReaderWrapper.wrap(ir);
+			DocsEnum hrefDocs = null;
+			DocsEnum indexDocs = null;
+			Term hrefTerm = new Term(FIELD_NAME, name);
 			for (int i = 0; i < index_paths.length; i++) {
 				Term indexTerm = new Term(FIELD_INDEX_ID, index_paths[i]);
 				if (i == 0) {
-					hrefDocs = ir.termDocs(hrefTerm);
-					indexDocs = ir.termDocs(indexTerm);
+					hrefDocs = ar.termDocsEnum(hrefTerm);
+					indexDocs = ar.termDocsEnum(indexTerm);
 				} else {
-					hrefDocs.seek(hrefTerm);
-					indexDocs.seek(indexTerm);
+					hrefDocs = ar.termDocsEnum(hrefTerm);
+					indexDocs = ar.termDocsEnum(indexTerm);
 				}
 				removeDocuments(hrefDocs, indexDocs);
 			}
@@ -545,19 +549,6 @@ public class SearchIndex implements IHelpSearchIndex {
 					"IO exception occurred while removing duplicates of document " + name //$NON-NLS-1$
 							+ " from index " + indexDir.getAbsolutePath() + ".", //$NON-NLS-1$ //$NON-NLS-2$
 					ioe);
-		} finally {
-			if (hrefDocs != null) {
-				try {
-					hrefDocs.close();
-				} catch (IOException e) {
-				}
-			}
-			if (indexDocs != null) {
-				try {
-					indexDocs.close();
-				} catch (IOException e) {
-				}
-			}
 		}
 		return Status.OK_STATUS;
 	}
@@ -569,33 +560,33 @@ public class SearchIndex implements IHelpSearchIndex {
 	 * @param docs2
 	 * @throws IOException
 	 */
-	private void removeDocuments(TermDocs doc1, TermDocs docs2) throws IOException {
-		if (!doc1.next()) {
+	private void removeDocuments(DocsEnum doc1, DocsEnum docs2) throws IOException {
+		if (doc1.nextDoc() == DocsEnum.NO_MORE_DOCS) {
 			return;
 		}
-		if (!docs2.next()) {
+		if (docs2.nextDoc() == DocsEnum.NO_MORE_DOCS) {
 			return;
 		}
 		while (true) {
-			if (doc1.doc() < docs2.doc()) {
-				if (!doc1.skipTo(docs2.doc())) {
-					if (!doc1.next()) {
+			if (doc1.docID() < docs2.docID()) {
+				if (doc1.advance(docs2.docID()) == DocsEnum.NO_MORE_DOCS) {
+					if (doc1.nextDoc() == DocsEnum.NO_MORE_DOCS) {
 						return;
 					}
 				}
-			} else if (doc1.doc() > docs2.doc()) {
-				if (!docs2.skipTo(doc1.doc())) {
-					if (!doc1.next()) {
+			} else if (doc1.docID() > docs2.docID()) {
+				if (docs2.advance(doc1.docID()) == DocsEnum.NO_MORE_DOCS) {
+					if (doc1.nextDoc() == DocsEnum.NO_MORE_DOCS) {
 						return;
 					}
 				}
 			}
-			if (doc1.doc() == docs2.doc()) {
-				ir.deleteDocument(doc1.doc());
-				if (!doc1.next()) {
+			if (doc1.docID() == docs2.docID()) {
+				iw.tryDeleteDocument(ir, doc1.docID());
+				if (doc1.nextDoc() == DocsEnum.NO_MORE_DOCS) {
 					return;
 				}
-				if (!docs2.next()) {
+				if (docs2.nextDoc() == DocsEnum.NO_MORE_DOCS) {
 					return;
 				}
 			}
@@ -802,7 +793,7 @@ public class SearchIndex implements IHelpSearchIndex {
 	public void openSearcher() throws IOException {
 		synchronized (searcherCreateLock) {
 			if (searcher == null) {
-				searcher = new IndexSearcher(IndexReader.open(luceneDirectory, false));
+				searcher = new IndexSearcher(DirectoryReader.open(luceneDirectory));
 			}
 		}
 	}
@@ -820,7 +811,7 @@ public class SearchIndex implements IHelpSearchIndex {
 				if (searches.isEmpty()) {
 					if (searcher != null) {
 						try {
-							searcher.close();
+							searcher.getIndexReader().close();
 						} catch (IOException ioe) {
 						}
 					}
@@ -903,7 +894,7 @@ public class SearchIndex implements IHelpSearchIndex {
 		IndexWriter cleaner = null;
 		LimitTokenCountAnalyzer analyzer = new LimitTokenCountAnalyzer(analyzerDescriptor.getAnalyzer(), 10000);
 		try {
-			cleaner = new IndexWriter(luceneDirectory, new IndexWriterConfig(org.apache.lucene.util.Version.LUCENE_31, analyzer).setOpenMode(
+			cleaner = new IndexWriter(luceneDirectory, new IndexWriterConfig(org.apache.lucene.util.Version.LUCENE_47, analyzer).setOpenMode(
 			        OpenMode.CREATE));
 		} catch (IOException ioe) {
 		} finally {
diff --git a/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/SmartAnalyzer.java b/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/SmartAnalyzer.java
index d0a7bb7..1b20d3b 100644
--- a/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/SmartAnalyzer.java
+++ b/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/SmartAnalyzer.java
@@ -10,15 +10,13 @@
  *******************************************************************************/
 package org.eclipse.help.internal.search;
 
-import java.io.*;
-
 import org.apache.lucene.analysis.*;
 
 /**
  * Smart Analyzer. Chooses underlying implementation based on the field which
  * text is analyzed.
  */
-public final class SmartAnalyzer extends Analyzer {
+public final class SmartAnalyzer extends AnalyzerWrapper {
 	Analyzer pluggedInAnalyzer;
 	Analyzer exactAnalyzer;
 
@@ -31,14 +29,14 @@ public final class SmartAnalyzer extends Analyzer {
 		this.exactAnalyzer = new DefaultAnalyzer(locale);
 	}
 	/**
-	 * Creates a TokenStream which tokenizes all the text in the provided
-	 * Reader. Delegates to DefaultAnalyzer when field used to search for exact
+	 * Delegates to DefaultAnalyzer when field used to search for exact
 	 * match, and to plugged-in analyzer for other fields.
 	 */
-	public final TokenStream tokenStream(String fieldName, Reader reader) {
+	@Override
+	public final Analyzer getWrappedAnalyzer(String fieldName) {
 		if (fieldName != null && fieldName.startsWith("exact_")) { //$NON-NLS-1$
-			return exactAnalyzer.tokenStream(fieldName, reader);
+			return exactAnalyzer;
 		}
-		return pluggedInAnalyzer.tokenStream(fieldName, reader);
+		return pluggedInAnalyzer;
 	}
 }
diff --git a/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/WordTokenStream.java b/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/WordTokenStream.java
index 0b70cf7..106775a 100644
--- a/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/WordTokenStream.java
+++ b/eclipse.platform.ua/org.eclipse.help.base/src/org/eclipse/help/internal/search/WordTokenStream.java
@@ -35,6 +35,7 @@ public final class WordTokenStream extends Tokenizer {
 	 * Constructor
 	 */
 	public WordTokenStream(String fieldName, Reader reader, Locale locale) {
+		super(reader);
 		this.reader = reader;
 		boundary = BreakIterator.getWordInstance(locale);
 
@@ -105,6 +106,7 @@ public final class WordTokenStream extends Tokenizer {
 	}
 
 	public void close() throws IOException {
+		super.close();
 		/// Unlikely to be called as this is a reused
 	    if (this.reader != null) {
 	    	this.reader.close();
diff --git a/eclipse.platform.ua/org.eclipse.ua.tests/META-INF/MANIFEST.MF b/eclipse.platform.ua/org.eclipse.ua.tests/META-INF/MANIFEST.MF
index a8177c3..cd99e8a 100644
--- a/eclipse.platform.ua/org.eclipse.ua.tests/META-INF/MANIFEST.MF
+++ b/eclipse.platform.ua/org.eclipse.ua.tests/META-INF/MANIFEST.MF
@@ -18,15 +18,14 @@
  org.eclipse.ui.intro.universal,
  org.eclipse.ui.forms,
  org.eclipse.ui.browser;bundle-version="3.2.300",
+ org.apache.lucene.analysis;bundle-version="[4.7.0,5.0.0)",
+ org.apache.lucene.core;bundle-version="[4.7.0,5.0.0)",
  org.eclipse.equinox.jsp.jasper;bundle-version="1.0.200",
  org.eclipse.equinox.jsp.jasper.registry;bundle-version="1.0.100"
 Bundle-ActivationPolicy: lazy
 Bundle-Vendor: Eclipse.org
 Import-Package: javax.servlet;version="3.1.0",
- javax.servlet.http;version="3.1.0",
- org.apache.lucene.index;core=split;version="[3.5.0,4.0.0)",
- org.apache.lucene.search;core=split;version="[3.5.0,4.0.0)",
- org.apache.lucene.store;core=split;version="[3.5.0,4.0.0)"
+ javax.servlet.http;version="3.1.0"
 Bundle-RequiredExecutionEnvironment: JavaSE-1.6
 Export-Package: org.eclipse.ua.tests,
  org.eclipse.ua.tests.browser,
diff --git a/eclipse.platform.ua/org.eclipse.ua.tests/help/org/eclipse/ua/tests/help/search/PrebuiltIndexCompatibility.java b/eclipse.platform.ua/org.eclipse.ua.tests/help/org/eclipse/ua/tests/help/search/PrebuiltIndexCompatibility.java
index 640d4c9..8924fa7 100644
--- a/eclipse.platform.ua/org.eclipse.ua.tests/help/org/eclipse/ua/tests/help/search/PrebuiltIndexCompatibility.java
+++ b/eclipse.platform.ua/org.eclipse.ua.tests/help/org/eclipse/ua/tests/help/search/PrebuiltIndexCompatibility.java
@@ -24,7 +24,7 @@ import junit.framework.TestSuite;
 import org.osgi.framework.Bundle;
 
 import org.apache.lucene.index.CorruptIndexException;
-import org.apache.lucene.index.IndexReader;
+import org.apache.lucene.index.DirectoryReader;
 import org.apache.lucene.search.IndexSearcher;
 import org.apache.lucene.search.Query;
 import org.apache.lucene.search.TopDocs;
@@ -157,7 +157,7 @@ public class PrebuiltIndexCompatibility extends TestCase {
 			IndexSearcher searcher = null;
 			try {
 				luceneDirectory = new NIOFSDirectory(new File(filePath));
-				searcher = new IndexSearcher(IndexReader.open(luceneDirectory, true));
+				searcher = new IndexSearcher(DirectoryReader.open(luceneDirectory));
 				TopDocs hits = searcher.search(luceneQuery, 500);
 				assertEquals(hits.totalHits, 1);
 			} finally {
@@ -167,7 +167,7 @@ public class PrebuiltIndexCompatibility extends TestCase {
 					} catch (IOException x) {
 					}
 				if (searcher != null)
-					searcher.close();
+					searcher.getIndexReader().close();
 			}
 		} else {
 			fail("Cannot resolve to file protocol");
-- 
2.1.0