pylucene 3.5.0-3

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

diff --git a/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/payloads/NumericPayloadTokenFilter.java b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/payloads/NumericPayloadTokenFilter.java
new file mode 100644 (file)
index 0000000..8ec5f70
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+++ b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/payloads/NumericPayloadTokenFilter.java
@@ -0,0 +1,58 @@
+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.analysis.TokenFilter;
+import org.apache.lucene.analysis.TokenStream;
+import org.apache.lucene.analysis.tokenattributes.PayloadAttribute;
+import org.apache.lucene.analysis.tokenattributes.TypeAttribute;
+import org.apache.lucene.index.Payload;
+
+import java.io.IOException;
+
+
+/**
+ * Assigns a payload to a token based on the {@link org.apache.lucene.analysis.Token#type()}
+ *
+ **/
+public class NumericPayloadTokenFilter extends TokenFilter {
+
+  private String typeMatch;
+  private Payload thePayload;
+
+  private final PayloadAttribute payloadAtt = addAttribute(PayloadAttribute.class);
+  private final TypeAttribute typeAtt = addAttribute(TypeAttribute.class);
+
+  public NumericPayloadTokenFilter(TokenStream input, float payload, String typeMatch) {
+    super(input);
+    //Need to encode the payload
+    thePayload = new Payload(PayloadHelper.encodeFloat(payload));
+    this.typeMatch = typeMatch;
+  }
+
+  @Override
+  public final boolean incrementToken() throws IOException {
+    if (input.incrementToken()) {
+      if (typeAtt.type().equals(typeMatch))
+        payloadAtt.setPayload(thePayload);
+      return true;
+    } else {
+      return false;
+    }
+  }
+}