pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / contrib / analyzers / common / src / java / org / apache / lucene / analysis / payloads / IdentityEncoder.java

diff --git a/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/payloads/IdentityEncoder.java b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/payloads/IdentityEncoder.java
new file mode 100644 (file)
index 0000000..0f30443
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+++ b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/payloads/IdentityEncoder.java
@@ -0,0 +1,59 @@
+package org.apache.lucene.analysis.payloads;
+/**
+ * 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 org.apache.lucene.index.Payload;
+
+import java.nio.ByteBuffer;
+import java.nio.CharBuffer;
+import java.nio.charset.Charset;
+
+
+/**
+ *  Does nothing other than convert the char array to a byte array using the specified encoding.
+ *
+ **/
+public class IdentityEncoder extends AbstractEncoder implements PayloadEncoder{
+
+  protected Charset charset = Charset.forName("UTF-8");
+  
+  /** @deprecated This field is no longer used. Use {@link #charset} instead. */
+  @Deprecated
+  protected String charsetName = charset.name();
+
+  public IdentityEncoder() {
+  }
+
+  public IdentityEncoder(Charset charset) {
+    this.charset = charset;
+    // @deprecated, remove this in 4.0:
+    charsetName = charset.name();
+  }
+
+
+  public Payload encode(char[] buffer, int offset, int length) {
+    final ByteBuffer bb = charset.encode(CharBuffer.wrap(buffer, offset, length));
+    if (bb.hasArray()) {
+      return new Payload(bb.array(), bb.arrayOffset() + bb.position(), bb.remaining());
+    } else {
+      // normally it should always have an array, but who knows?
+      final byte[] b = new byte[bb.remaining()];
+      bb.get(b);
+      return new Payload(b);
+    }
+  }
+}