X-Git-Url: https://git.mdrn.pl/pylucene.git/blobdiff_plain/a2e61f0c04805cfcb8706176758d1283c7e3a55c..aaeed5504b982cf3545252ab528713250aa33eed:/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/store/SimpleFSDirectory.java

diff --git a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/store/SimpleFSDirectory.java b/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/store/SimpleFSDirectory.java
deleted file mode 100644
index 164d0c1..0000000
--- a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/store/SimpleFSDirectory.java
+++ /dev/null
@@ -1,171 +0,0 @@
-package org.apache.lucene.store;
-
-/**
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-import java.io.File;
-import java.io.IOException;
-import java.io.RandomAccessFile;
-
-/** A straightforward implementation of {@link FSDirectory}
- *  using java.io.RandomAccessFile.  However, this class has
- *  poor concurrent performance (multiple threads will
- *  bottleneck) as it synchronizes when multiple threads
- *  read from the same file.  It's usually better to use
- *  {@link NIOFSDirectory} or {@link MMapDirectory} instead. */
-public class SimpleFSDirectory extends FSDirectory {
-    
-  /** Create a new SimpleFSDirectory for the named location.
-   *
-   * @param path the path of the directory
-   * @param lockFactory the lock factory to use, or null for the default
-   * ({@link NativeFSLockFactory});
-   * @throws IOException
-   */
-  public SimpleFSDirectory(File path, LockFactory lockFactory) throws IOException {
-    super(path, lockFactory);
-  }
-  
-  /** Create a new SimpleFSDirectory for the named location and {@link NativeFSLockFactory}.
-   *
-   * @param path the path of the directory
-   * @throws IOException
-   */
-  public SimpleFSDirectory(File path) throws IOException {
-    super(path, null);
-  }
-
-  /** Creates an IndexInput for the file with the given name. */
-  @Override
-  public IndexInput openInput(String name, int bufferSize) throws IOException {
-    ensureOpen();
-    return new SimpleFSIndexInput(new File(directory, name), bufferSize, getReadChunkSize());
-  }
-
-  protected static class SimpleFSIndexInput extends BufferedIndexInput {
-  
-    protected static class Descriptor extends RandomAccessFile {
-      // remember if the file is open, so that we don't try to close it
-      // more than once
-      protected volatile boolean isOpen;
-      long position;
-      final long length;
-      
-      public Descriptor(File file, String mode) throws IOException {
-        super(file, mode);
-        isOpen=true;
-        length=length();
-      }
-  
-      @Override
-      public void close() throws IOException {
-        if (isOpen) {
-          isOpen=false;
-          super.close();
-        }
-      }
-    }
-  
-    protected final Descriptor file;
-    boolean isClone;
-    //  LUCENE-1566 - maximum read length on a 32bit JVM to prevent incorrect OOM 
-    protected final int chunkSize;
-    
-    public SimpleFSIndexInput(File path, int bufferSize, int chunkSize) throws IOException {
-      super(bufferSize);
-      file = new Descriptor(path, "r");
-      this.chunkSize = chunkSize;
-    }
-  
-    /** IndexInput methods */
-    @Override
-    protected void readInternal(byte[] b, int offset, int len)
-         throws IOException {
-      synchronized (file) {
-        long position = getFilePointer();
-        if (position != file.position) {
-          file.seek(position);
-          file.position = position;
-        }
-        int total = 0;
-
-        try {
-          do {
-            final int readLength;
-            if (total + chunkSize > len) {
-              readLength = len - total;
-            } else {
-              // LUCENE-1566 - work around JVM Bug by breaking very large reads into chunks
-              readLength = chunkSize;
-            }
-            final int i = file.read(b, offset + total, readLength);
-            if (i == -1) {
-              throw new IOException("read past EOF");
-            }
-            file.position += i;
-            total += i;
-          } while (total < len);
-        } catch (OutOfMemoryError e) {
-          // propagate OOM up and add a hint for 32bit VM Users hitting the bug
-          // with a large chunk size in the fast path.
-          final OutOfMemoryError outOfMemoryError = new OutOfMemoryError(
-              "OutOfMemoryError likely caused by the Sun VM Bug described in "
-              + "https://issues.apache.org/jira/browse/LUCENE-1566; try calling FSDirectory.setReadChunkSize "
-              + "with a value smaller than the current chunk size (" + chunkSize + ")");
-          outOfMemoryError.initCause(e);
-          throw outOfMemoryError;
-        }
-      }
-    }
-  
-    @Override
-    public void close() throws IOException {
-      // only close the file if this is not a clone
-      if (!isClone) file.close();
-    }
-  
-    @Override
-    protected void seekInternal(long position) {
-    }
-  
-    @Override
-    public long length() {
-      return file.length;
-    }
-  
-    @Override
-    public Object clone() {
-      SimpleFSIndexInput clone = (SimpleFSIndexInput)super.clone();
-      clone.isClone = true;
-      return clone;
-    }
-  
-    /** Method used for testing. Returns true if the underlying
-     *  file descriptor is valid.
-     */
-    boolean isFDValid() throws IOException {
-      return file.getFD().valid();
-    }
-    
-    @Override
-    public void copyBytes(IndexOutput out, long numBytes) throws IOException {
-      numBytes -= flushBuffer(out, numBytes);
-      // If out is FSIndexOutput, the copy will be optimized
-      out.copyBytes(this, numBytes);
-    }
-  }
-}