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LUCENE-3661: make Lucene3x codec really completely readonly 

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene3661@1237070 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Robert Muir 2012-01-28 15:13:36 +00:00
parent df204bc54b
commit 1e538244af
2 changed files with 41 additions and 2 deletions
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17
lucene/src/java/org/apache/lucene/codecs/lucene3x/Lucene3xCodec.java
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@ -30,6 +30,7 @@ import org.apache.lucene.codecs.PerDocProducer;
import org.apache.lucene.codecs.PostingsFormat;
import org.apache.lucene.codecs.SegmentInfosFormat;
import org.apache.lucene.codecs.StoredFieldsFormat;
import org.apache.lucene.codecs.StoredFieldsWriter;
import org.apache.lucene.codecs.TermVectorsFormat;
import org.apache.lucene.codecs.lucene40.Lucene40LiveDocsFormat;
import org.apache.lucene.codecs.lucene40.Lucene40StoredFieldsFormat;
@ -37,6 +38,8 @@ import org.apache.lucene.index.PerDocWriteState;
import org.apache.lucene.index.SegmentInfo;
import org.apache.lucene.index.SegmentReadState;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.IOContext;
import org.apache.lucene.util.MutableBits;
/**
* Supports the Lucene 3.x index format (readonly)
@ -49,7 +52,12 @@ public class Lucene3xCodec extends Codec {
private final PostingsFormat postingsFormat = new Lucene3xPostingsFormat();
// TODO: this should really be a different impl
private final StoredFieldsFormat fieldsFormat = new Lucene40StoredFieldsFormat();
private final StoredFieldsFormat fieldsFormat = new Lucene40StoredFieldsFormat() {
@Override
public StoredFieldsWriter fieldsWriter(Directory directory, String segment, IOContext context) throws IOException {
throw new UnsupportedOperationException("this codec can only be used for reading");
}
};
private final TermVectorsFormat vectorsFormat = new Lucene3xTermVectorsFormat();
@ -60,7 +68,12 @@ public class Lucene3xCodec extends Codec {
private final NormsFormat normsFormat = new Lucene3xNormsFormat();
// TODO: this should really be a different impl
private final LiveDocsFormat liveDocsFormat = new Lucene40LiveDocsFormat();
private final LiveDocsFormat liveDocsFormat = new Lucene40LiveDocsFormat() {
@Override
public void writeLiveDocs(MutableBits bits, Directory dir, SegmentInfo info, IOContext context) throws IOException {
throw new UnsupportedOperationException("this codec can only be used for reading");
}
};
// 3.x doesn't support docvalues
private final DocValuesFormat docValuesFormat = new DocValuesFormat() {

26
lucene/src/test-framework/java/org/apache/lucene/codecs/preflexrw/PreFlexRWCodec.java
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@ -18,11 +18,15 @@ package org.apache.lucene.codecs.preflexrw;
*/
import org.apache.lucene.codecs.FieldInfosFormat;
import org.apache.lucene.codecs.LiveDocsFormat;
import org.apache.lucene.codecs.NormsFormat;
import org.apache.lucene.codecs.PostingsFormat;
import org.apache.lucene.codecs.SegmentInfosFormat;
import org.apache.lucene.codecs.StoredFieldsFormat;
import org.apache.lucene.codecs.TermVectorsFormat;
import org.apache.lucene.codecs.lucene3x.Lucene3xCodec;
import org.apache.lucene.codecs.lucene40.Lucene40LiveDocsFormat;
import org.apache.lucene.codecs.lucene40.Lucene40StoredFieldsFormat;
import org.apache.lucene.util.LuceneTestCase;
/**
@ -35,6 +39,10 @@ public class PreFlexRWCodec extends Lucene3xCodec {
private final FieldInfosFormat fieldInfos = new PreFlexRWFieldInfosFormat();
private final TermVectorsFormat termVectors = new PreFlexRWTermVectorsFormat();
private final SegmentInfosFormat segmentInfos = new PreFlexRWSegmentInfosFormat();
// TODO: this should really be a different impl
private final LiveDocsFormat liveDocs = new Lucene40LiveDocsFormat();
// TODO: this should really be a different impl
private final StoredFieldsFormat storedFields = new Lucene40StoredFieldsFormat();
@Override
public PostingsFormat postingsFormat() {
@ -80,4 +88,22 @@ public class PreFlexRWCodec extends Lucene3xCodec {
return super.termVectorsFormat();
}
}
@Override
public LiveDocsFormat liveDocsFormat() {
if (LuceneTestCase.PREFLEX_IMPERSONATION_IS_ACTIVE) {
return liveDocs;
} else {
return super.liveDocsFormat();
}
}
@Override
public StoredFieldsFormat storedFieldsFormat() {
if (LuceneTestCase.PREFLEX_IMPERSONATION_IS_ACTIVE) {
return storedFields;
} else {
return super.storedFieldsFormat();
}
}
}