pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.4.0 / lucene / src / java / org / apache / lucene / document / CompressionTools.java

diff --git a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/document/CompressionTools.java b/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/document/CompressionTools.java
deleted file mode 100644 (file)
index ecd768b..0000000
--- a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/document/CompressionTools.java
+++ /dev/null
@@ -1,124 +0,0 @@
-package org.apache.lucene.document;
-
-/**
- * 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.util.zip.Deflater;
-import java.util.zip.Inflater;
-import java.util.zip.DataFormatException;
-import java.io.ByteArrayOutputStream;
-import org.apache.lucene.util.UnicodeUtil;
-
-/** Simple utility class providing static methods to
- *  compress and decompress binary data for stored fields.
- *  This class uses java.util.zip.Deflater and Inflater
- *  classes to compress and decompress.
- */
-
-public class CompressionTools {
-
-  // Export only static methods
-  private CompressionTools() {}
-
-  /** Compresses the specified byte range using the
-   *  specified compressionLevel (constants are defined in
-   *  java.util.zip.Deflater). */
-  public static byte[] compress(byte[] value, int offset, int length, int compressionLevel) {
-
-    /* Create an expandable byte array to hold the compressed data.
-     * You cannot use an array that's the same size as the orginal because
-     * there is no guarantee that the compressed data will be smaller than
-     * the uncompressed data. */
-    ByteArrayOutputStream bos = new ByteArrayOutputStream(length);
-
-    Deflater compressor = new Deflater();
-
-    try {
-      compressor.setLevel(compressionLevel);
-      compressor.setInput(value, offset, length);
-      compressor.finish();
-
-      // Compress the data
-      final byte[] buf = new byte[1024];
-      while (!compressor.finished()) {
-        int count = compressor.deflate(buf);
-        bos.write(buf, 0, count);
-      }
-    } finally {
-      compressor.end();
-    }
-
-    return bos.toByteArray();
-  }
-
-  /** Compresses the specified byte range, with default BEST_COMPRESSION level */
-  public static byte[] compress(byte[] value, int offset, int length) {
-    return compress(value, offset, length, Deflater.BEST_COMPRESSION);
-  }
-  
-  /** Compresses all bytes in the array, with default BEST_COMPRESSION level */
-  public static byte[] compress(byte[] value) {
-    return compress(value, 0, value.length, Deflater.BEST_COMPRESSION);
-  }
-
-  /** Compresses the String value, with default BEST_COMPRESSION level */
-  public static byte[] compressString(String value) {
-    return compressString(value, Deflater.BEST_COMPRESSION);
-  }
-
-  /** Compresses the String value using the specified
-   *  compressionLevel (constants are defined in
-   *  java.util.zip.Deflater). */
-  public static byte[] compressString(String value, int compressionLevel) {
-    UnicodeUtil.UTF8Result result = new UnicodeUtil.UTF8Result();
-    UnicodeUtil.UTF16toUTF8(value, 0, value.length(), result);
-    return compress(result.result, 0, result.length, compressionLevel);
-  }
-
-  /** Decompress the byte array previously returned by
-   *  compress */
-  public static byte[] decompress(byte[] value) throws DataFormatException {
-    // Create an expandable byte array to hold the decompressed data
-    ByteArrayOutputStream bos = new ByteArrayOutputStream(value.length);
-
-    Inflater decompressor = new Inflater();
-
-    try {
-      decompressor.setInput(value);
-
-      // Decompress the data
-      final byte[] buf = new byte[1024];
-      while (!decompressor.finished()) {
-        int count = decompressor.inflate(buf);
-        bos.write(buf, 0, count);
-      }
-    } finally {  
-      decompressor.end();
-    }
-    
-    return bos.toByteArray();
-  }
-
-  /** Decompress the byte array previously returned by
-   *  compressString back into a String */
-  public static String decompressString(byte[] value) throws DataFormatException {
-    UnicodeUtil.UTF16Result result = new UnicodeUtil.UTF16Result();
-    final byte[] bytes = decompress(value);
-    UnicodeUtil.UTF8toUTF16(bytes, 0, bytes.length, result);
-    return new String(result.result, 0, result.length);
-  }
-}