pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / src / java / org / apache / lucene / analysis / tokenattributes / OffsetAttributeImpl.java

diff --git a/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/analysis/tokenattributes/OffsetAttributeImpl.java b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/analysis/tokenattributes/OffsetAttributeImpl.java
new file mode 100644 (file)
index 0000000..0593200
--- /dev/null
+++ b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/analysis/tokenattributes/OffsetAttributeImpl.java
@@ -0,0 +1,90 @@
+package org.apache.lucene.analysis.tokenattributes;
+
+/**
+ * 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.Serializable;
+
+import org.apache.lucene.util.AttributeImpl;
+
+/**
+ * The start and end character offset of a Token. 
+ */
+public class OffsetAttributeImpl extends AttributeImpl implements OffsetAttribute, Cloneable, Serializable {
+  private int startOffset;
+  private int endOffset;
+
+  /** Returns this Token's starting offset, the position of the first character
+  corresponding to this token in the source text.
+
+  Note that the difference between endOffset() and startOffset() may not be
+  equal to termText.length(), as the term text may have been altered by a
+  stemmer or some other filter. */
+  public int startOffset() {
+    return startOffset;
+  }
+
+  
+  /** Set the starting and ending offset.
+    @see #startOffset() and #endOffset()*/
+  public void setOffset(int startOffset, int endOffset) {
+    this.startOffset = startOffset;
+    this.endOffset = endOffset;
+  }
+  
+
+  /** Returns this Token's ending offset, one greater than the position of the
+  last character corresponding to this token in the source text. The length
+  of the token in the source text is (endOffset - startOffset). */
+  public int endOffset() {
+    return endOffset;
+  }
+
+
+  @Override
+  public void clear() {
+    startOffset = 0;
+    endOffset = 0;
+  }
+  
+  @Override
+  public boolean equals(Object other) {
+    if (other == this) {
+      return true;
+    }
+    
+    if (other instanceof OffsetAttributeImpl) {
+      OffsetAttributeImpl o = (OffsetAttributeImpl) other;
+      return o.startOffset == startOffset && o.endOffset == endOffset;
+    }
+    
+    return false;
+  }
+
+  @Override
+  public int hashCode() {
+    int code = startOffset;
+    code = code * 31 + endOffset;
+    return code;
+  } 
+  
+  @Override
+  public void copyTo(AttributeImpl target) {
+    OffsetAttribute t = (OffsetAttribute) target;
+    t.setOffset(startOffset, endOffset);
+  }  
+}