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remove dead code / 3.x hacks 

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1370876 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Robert Muir 2012-08-08 18:36:34 +00:00
parent 38c1b46817
commit 7d90e98c77
1 changed files with 9 additions and 34 deletions
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43
lucene/core/src/java/org/apache/lucene/index/IndexWriter.java
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@ -2312,9 +2312,7 @@ public class IndexWriter implements Closeable, TwoPhaseCommit {
}
SegmentInfos sis = new SegmentInfos(); // read infos from dir
sis.read(dir);
final Set<String> dsFilesCopied = new HashSet<String>();
final Map<String, String> dsNames = new HashMap<String, String>();
final Set<String> copiedFiles = new HashSet<String>();
for (SegmentInfoPerCommit info : sis) {
assert !infos.contains(info): "dup info dir=" + info.info.dir + " name=" + info.info.name;
@ -2327,7 +2325,7 @@ public class IndexWriter implements Closeable, TwoPhaseCommit {
IOContext context = new IOContext(new MergeInfo(info.info.getDocCount(), info.info.sizeInBytes(), true, -1));
infos.add(copySegmentAsIs(info, newSegName, dsNames, dsFilesCopied, context, copiedFiles));
infos.add(copySegmentAsIs(info, newSegName, context));
}
}
@ -2463,25 +2461,9 @@ public class IndexWriter implements Closeable, TwoPhaseCommit {
}
/** Copies the segment files as-is into the IndexWriter's directory. */
// TODO: this can be substantially simplified now that 3.x support/shared docstores is removed!
private SegmentInfoPerCommit copySegmentAsIs(SegmentInfoPerCommit info, String segName,
Map<String, String> dsNames, Set<String> dsFilesCopied, IOContext context,
Set<String> copiedFiles)
private SegmentInfoPerCommit copySegmentAsIs(SegmentInfoPerCommit info, String segName, IOContext context)
throws IOException {
// Determine if the doc store of this segment needs to be copied. It's
// only relevant for segments that share doc store with others,
// because the DS might have been copied already, in which case we
// just want to update the DS name of this SegmentInfo.
final String dsName = info.info.name;
assert dsName != null;
final String newDsName;
if (dsNames.containsKey(dsName)) {
newDsName = dsNames.get(dsName);
} else {
dsNames.put(dsName, segName);
newDsName = segName;
}
// note: we don't really need this fis (its copied), but we load it up
// so we don't pass a null value to the si writer
FieldInfos fis = getFieldInfos(info.info);
@ -2496,7 +2478,7 @@ public class IndexWriter implements Closeable, TwoPhaseCommit {
}
//System.out.println("copy seg=" + info.info.name + " version=" + info.info.getVersion());
// Same SI as before but we change directory, name and docStoreSegment:
// Same SI as before but we change directory and name
SegmentInfo newInfo = new SegmentInfo(directory, info.info.getVersion(), segName, info.info.getDocCount(),
info.info.getUseCompoundFile(),
info.info.getCodec(), info.info.getDiagnostics(), attributes);
@ -2513,16 +2495,10 @@ public class IndexWriter implements Closeable, TwoPhaseCommit {
}
newInfo.setFiles(segFiles);
// We must rewrite the SI file because it references
// segment name (its own name, if its 3.x, and doc
// store segment name):
// We must rewrite the SI file because it references segment name in its list of files, etc
TrackingDirectoryWrapper trackingDir = new TrackingDirectoryWrapper(directory);
try {
newInfo.getCodec().segmentInfoFormat().getSegmentInfoWriter().write(trackingDir, newInfo, fis, context);
} catch (UnsupportedOperationException uoe) {
// OK: 3x codec cannot write a new SI file;
// SegmentInfos will write this on commit
}
newInfo.getCodec().segmentInfoFormat().getSegmentInfoWriter().write(trackingDir, newInfo, fis, context);
final Collection<String> siFiles = trackingDir.getCreatedFiles();
@ -2537,8 +2513,7 @@ public class IndexWriter implements Closeable, TwoPhaseCommit {
}
assert !directory.fileExists(newFileName): "file \"" + newFileName + "\" already exists; siFiles=" + siFiles;
assert !copiedFiles.contains(file): "file \"" + file + "\" is being copied more than once";
copiedFiles.add(file);
info.info.dir.copy(directory, file, newFileName, context);
}