Java Doc for DirectoryIndexReader.java in  » Search-Engine » lucene » org » apache » lucene » index » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Search Engine » lucene » org.apache.lucene.index   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.apache.lucene.index.IndexReader       org.apache.lucene.index.DirectoryIndexReader All known Subclasses:   org.apache.lucene.index.MultiSegmentReader,  org.apache.lucene.index.SegmentReader, DirectoryIndexReader abstract class DirectoryIndexReader extends IndexReader (Code) IndexReader implementation that has access to a Directory. Instances that have a SegmentInfos object (i. e. segmentInfos != null) "own" the directory, which means that they try to acquire a write lock whenever index modifications are performed. Field Summary protected  boolean closeDirectory      protected  Directory directory      Constructor Summary protected   DirectoryIndexReader()        DirectoryIndexReader(Directory directory, SegmentInfos segmentInfos, boolean closeDirectory)      Method Summary protected  void acquireWriteLock()      Tries to acquire the WriteLock on this directory. abstract protected  void commitChanges()      public  Directory directory()      Returns the directory this index resides in. protected  void doClose()      protected  void doCommit()      Commit changes resulting from delete, undeleteAll, or setNorm operations If an exception is hit, then either no changes or all changes will have been committed to the index (transactional semantics). abstract protected  DirectoryIndexReader doReopen(SegmentInfos infos)      protected  void finalize()      Release the write lock, if needed. public  long getVersion()      Version number when this IndexReader was opened.  void init(Directory directory, SegmentInfos segmentInfos, boolean closeDirectory)      public  boolean isCurrent()      Check whether this IndexReader is still using the current (i.e., most recently committed) version of the index. public  boolean isOptimized()      static  DirectoryIndexReader open(Directory directory, boolean closeDirectory, IndexDeletionPolicy deletionPolicy)      final public synchronized  IndexReader reopen()       void rollbackCommit()      Rolls back state to just before the commit (this is called by commit() if there is some exception while committing). public  void setDeletionPolicy(IndexDeletionPolicy deletionPolicy)       void startCommit()      Should internally checkpoint state that will change during commit so that we can rollback if necessary. Field Detail closeDirectory protected boolean closeDirectory(Code) directory protected Directory directory(Code) Constructor Detail DirectoryIndexReader protected DirectoryIndexReader()(Code) DirectoryIndexReader DirectoryIndexReader(Directory directory, SegmentInfos segmentInfos, boolean closeDirectory)(Code) Method Detail acquireWriteLock protected void acquireWriteLock() throws StaleReaderException, CorruptIndexException, LockObtainFailedException, IOException(Code) Tries to acquire the WriteLock on this directory. this method is only valid if this IndexReader is directory owner. throws:   StaleReaderException - if the index has changedsince this reader was opened throws:   CorruptIndexException - if the index is corrupt throws:   LockObtainFailedException - if another writerhas this index open (write.lock could notbe obtained) throws:   IOException - if there is a low-level IO error commitChanges abstract protected void commitChanges() throws IOException(Code) directory public Directory directory()(Code) Returns the directory this index resides in. doClose protected void doClose() throws IOException(Code) doCommit protected void doCommit() throws IOException(Code) Commit changes resulting from delete, undeleteAll, or setNorm operations If an exception is hit, then either no changes or all changes will have been committed to the index (transactional semantics). throws:   IOException - if there is a low-level IO error doReopen abstract protected DirectoryIndexReader doReopen(SegmentInfos infos) throws CorruptIndexException, IOException(Code) Re-opens the index using the passed-in SegmentInfos finalize protected void finalize() throws Throwable(Code) Release the write lock, if needed. getVersion public long getVersion()(Code) Version number when this IndexReader was opened. init void init(Directory directory, SegmentInfos segmentInfos, boolean closeDirectory)(Code) isCurrent public boolean isCurrent() throws CorruptIndexException, IOException(Code) Check whether this IndexReader is still using the current (i.e., most recently committed) version of the index. If a writer has committed any changes to the index since this reader was opened, this will return false, in which case you must open a new IndexReader in order to see the changes. See the description of the autoCommit flag which controls when the IndexWriter actually commits changes to the index. throws:   CorruptIndexException - if the index is corrupt throws:   IOException - if there is a low-level IO error isOptimized public boolean isOptimized()(Code) Checks is the index is optimized (if it has a single segment and no deletions) true if the index is optimized; false otherwise open static DirectoryIndexReader open(Directory directory, boolean closeDirectory, IndexDeletionPolicy deletionPolicy) throws CorruptIndexException, IOException(Code) reopen final public synchronized IndexReader reopen() throws CorruptIndexException, IOException(Code) rollbackCommit void rollbackCommit()(Code) Rolls back state to just before the commit (this is called by commit() if there is some exception while committing). setDeletionPolicy public void setDeletionPolicy(IndexDeletionPolicy deletionPolicy)(Code) startCommit void startCommit()(Code) Should internally checkpoint state that will change during commit so that we can rollback if necessary. Fields inherited from org.apache.lucene.index.IndexReader protected boolean hasChanges(Code)(Java Doc) Methods inherited from org.apache.lucene.index.IndexReader protected synchronized void acquireWriteLock() throws IOException(Code)(Java Doc) final public synchronized void close() throws IOException(Code)(Java Doc) final protected synchronized void commit() throws IOException(Code)(Java Doc) protected synchronized void decRef() throws IOException(Code)(Java Doc) final public synchronized void deleteDocument(int docNum) throws StaleReaderException, CorruptIndexException, LockObtainFailedException, IOException(Code)(Java Doc) final public int deleteDocuments(Term term) throws StaleReaderException, CorruptIndexException, LockObtainFailedException, IOException(Code)(Java Doc) public Directory directory()(Code)(Java Doc) abstract protected void doClose() throws IOException(Code)(Java Doc) abstract protected void doCommit() throws IOException(Code)(Java Doc) abstract protected void doDelete(int docNum) throws CorruptIndexException, IOException(Code)(Java Doc) abstract protected void doSetNorm(int doc, String field, byte value) throws CorruptIndexException, IOException(Code)(Java Doc) abstract protected void doUndeleteAll() throws CorruptIndexException, IOException(Code)(Java Doc) abstract public int docFreq(Term t) throws IOException(Code)(Java Doc) public Document document(int n) throws CorruptIndexException, IOException(Code)(Java Doc) abstract public Document document(int n, FieldSelector fieldSelector) throws CorruptIndexException, IOException(Code)(Java Doc) final protected void ensureOpen() throws AlreadyClosedException(Code)(Java Doc) final public synchronized void flush() throws IOException(Code)(Java Doc) public static long getCurrentVersion(String directory) throws CorruptIndexException, IOException(Code)(Java Doc) public static long getCurrentVersion(File directory) throws CorruptIndexException, IOException(Code)(Java Doc) public static long getCurrentVersion(Directory directory) throws CorruptIndexException, IOException(Code)(Java Doc) abstract public Collection getFieldNames(FieldOption fldOption)(Code)(Java Doc) synchronized int getRefCount()(Code)(Java Doc) abstract public TermFreqVector getTermFreqVector(int docNumber, String field) throws IOException(Code)(Java Doc) abstract public void getTermFreqVector(int docNumber, String field, TermVectorMapper mapper) throws IOException(Code)(Java Doc) abstract public void getTermFreqVector(int docNumber, TermVectorMapper mapper) throws IOException(Code)(Java Doc) abstract public TermFreqVector[] getTermFreqVectors(int docNumber) throws IOException(Code)(Java Doc) public int getTermInfosIndexDivisor()(Code)(Java Doc) public long getVersion()(Code)(Java Doc) abstract public boolean hasDeletions()(Code)(Java Doc) public boolean hasNorms(String field) throws IOException(Code)(Java Doc) protected synchronized void incRef()(Code)(Java Doc) public static boolean indexExists(String directory)(Code)(Java Doc) public static boolean indexExists(File directory)(Code)(Java Doc) public static boolean indexExists(Directory directory) throws IOException(Code)(Java Doc) public boolean isCurrent() throws CorruptIndexException, IOException(Code)(Java Doc) abstract public boolean isDeleted(int n)(Code)(Java Doc) public static boolean isLocked(Directory directory) throws IOException(Code)(Java Doc) public static boolean isLocked(String directory) throws IOException(Code)(Java Doc) public boolean isOptimized()(Code)(Java Doc) public static long lastModified(String directory) throws CorruptIndexException, IOException(Code)(Java Doc) public static long lastModified(File fileDirectory) throws CorruptIndexException, IOException(Code)(Java Doc) public static long lastModified(Directory directory2) throws CorruptIndexException, IOException(Code)(Java Doc) public static void main(String[] args)(Code)(Java Doc) abstract public int maxDoc()(Code)(Java Doc) abstract public byte[] norms(String field) throws IOException(Code)(Java Doc) abstract public void norms(String field, byte[] bytes, int offset) throws IOException(Code)(Java Doc) abstract public int numDocs()(Code)(Java Doc) public static IndexReader open(String path) throws CorruptIndexException, IOException(Code)(Java Doc) public static IndexReader open(File path) throws CorruptIndexException, IOException(Code)(Java Doc) public static IndexReader open(Directory directory) throws CorruptIndexException, IOException(Code)(Java Doc) public static IndexReader open(Directory directory, IndexDeletionPolicy deletionPolicy) throws CorruptIndexException, IOException(Code)(Java Doc) public synchronized IndexReader reopen() throws CorruptIndexException, IOException(Code)(Java Doc) final public synchronized void setNorm(int doc, String field, byte value) throws StaleReaderException, CorruptIndexException, LockObtainFailedException, IOException(Code)(Java Doc) public void setNorm(int doc, String field, float value) throws StaleReaderException, CorruptIndexException, LockObtainFailedException, IOException(Code)(Java Doc) public void setTermInfosIndexDivisor(int indexDivisor) throws IllegalStateException(Code)(Java Doc) public TermDocs termDocs(Term term) throws IOException(Code)(Java Doc) abstract public TermDocs termDocs() throws IOException(Code)(Java Doc) public TermPositions termPositions(Term term) throws IOException(Code)(Java Doc) abstract public TermPositions termPositions() throws IOException(Code)(Java Doc) abstract public TermEnum terms() throws IOException(Code)(Java Doc) abstract public TermEnum terms(Term t) throws IOException(Code)(Java Doc) final public synchronized void undeleteAll() throws StaleReaderException, CorruptIndexException, LockObtainFailedException, IOException(Code)(Java Doc) public static void unlock(Directory directory) throws IOException(Code)(Java Doc) 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)