Java Doc for IndexFileDeleter.java in  » Net » lucene-connector » org » apache » lucene » index » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Net » lucene connector » org.apache.lucene.index   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.apache.lucene.index.IndexFileDeleter IndexFileDeleter final class IndexFileDeleter (Code) Field Summary public static  boolean VERBOSE_REF_COUNTS      Constructor Summary public   IndexFileDeleter(Directory directory, IndexDeletionPolicy policy, SegmentInfos segmentInfos, PrintStream infoStream, DocumentsWriter docWriter)      Initialize the deleter: find all previous commits in the Directory, incref the files they reference, call the policy to let it delete commits. Method Summary public  void checkpoint(SegmentInfos segmentInfos, boolean isCommit)      For definition of "check point" see IndexWriter comments: "Clarification: Check Points (and commits)". Writer calls this when it has made a "consistent change" to the index, meaning new files are written to the index and the in-memory SegmentInfos have been modified to point to those files. This may or may not be a commit (segments_N may or may not have been written). We simply incref the files referenced by the new SegmentInfos and decref the files we had previously seen (if any). If this is a commit, we also call the policy to give it a chance to remove other commits. public  void close()       void decRef(List files)       void decRef(SegmentInfos segmentInfos)       void deleteFile(String fileName)       void deleteFiles(List files)       void deleteNewFiles(List files)      Delets the specified files, but only if they are new (have not yet been incref'd).  void incRef(SegmentInfos segmentInfos, boolean isCommit)       void incRef(List files)      public  void refresh(String segmentName)      Writer calls this when it has hit an error and had to roll back, to tell us that there may now be unreferenced files in the filesystem. public  void refresh()       void setInfoStream(PrintStream infoStream)      Field Detail VERBOSE_REF_COUNTS public static boolean VERBOSE_REF_COUNTS(Code) Change to true to see details of reference counts when infoStream != null Constructor Detail IndexFileDeleter public IndexFileDeleter(Directory directory, IndexDeletionPolicy policy, SegmentInfos segmentInfos, PrintStream infoStream, DocumentsWriter docWriter) throws CorruptIndexException, IOException(Code) Initialize the deleter: find all previous commits in the Directory, incref the files they reference, call the policy to let it delete commits. The incoming segmentInfos must have been loaded from a commit point and not yet modified. This will remove any files not referenced by any of the commits. throws:   CorruptIndexException - if the index is corrupt throws:   IOException - if there is a low-level IO error Method Detail checkpoint public void checkpoint(SegmentInfos segmentInfos, boolean isCommit) throws IOException(Code) For definition of "check point" see IndexWriter comments: "Clarification: Check Points (and commits)". Writer calls this when it has made a "consistent change" to the index, meaning new files are written to the index and the in-memory SegmentInfos have been modified to point to those files. This may or may not be a commit (segments_N may or may not have been written). We simply incref the files referenced by the new SegmentInfos and decref the files we had previously seen (if any). If this is a commit, we also call the policy to give it a chance to remove other commits. If any commits are removed, we decref their files as well. close public void close() throws IOException(Code) decRef void decRef(List files) throws IOException(Code) decRef void decRef(SegmentInfos segmentInfos) throws IOException(Code) deleteFile void deleteFile(String fileName) throws IOException(Code) deleteFiles void deleteFiles(List files) throws IOException(Code) deleteNewFiles void deleteNewFiles(List files) throws IOException(Code) Delets the specified files, but only if they are new (have not yet been incref'd). incRef void incRef(SegmentInfos segmentInfos, boolean isCommit) throws IOException(Code) incRef void incRef(List files) throws IOException(Code) refresh public void refresh(String segmentName) throws IOException(Code) Writer calls this when it has hit an error and had to roll back, to tell us that there may now be unreferenced files in the filesystem. So we re-list the filesystem and delete such files. If segmentName is non-null, we will only delete files corresponding to that segment. refresh public void refresh() throws IOException(Code) setInfoStream void setInfoStream(PrintStream infoStream)(Code) Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)