pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / src / java / org / apache / lucene / index / SegmentTermVector.java

diff --git a/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/index/SegmentTermVector.java b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/index/SegmentTermVector.java
new file mode 100644 (file)
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--- /dev/null
+++ b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/index/SegmentTermVector.java
@@ -0,0 +1,90 @@
+package org.apache.lucene.index;
+
+/**
+ * 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.*;
+
+
+class SegmentTermVector implements TermFreqVector {
+  private String field;
+  private String terms[];
+  private int termFreqs[];
+  
+  SegmentTermVector(String field, String terms[], int termFreqs[]) {
+    this.field = field;
+    this.terms = terms;
+    this.termFreqs = termFreqs;
+  }
+
+  /**
+   * 
+   * @return The number of the field this vector is associated with
+   */
+  public String getField() {
+    return field;
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append('{');
+    sb.append(field).append(": ");
+    if(terms != null){
+      for (int i=0; i<terms.length; i++) {
+        if (i>0) sb.append(", ");
+        sb.append(terms[i]).append('/').append(termFreqs[i]);
+      }
+    }
+    sb.append('}');
+    
+    return sb.toString();
+  }
+
+  public int size() {
+    return terms == null ? 0 : terms.length;
+  }
+
+  public String [] getTerms() {
+    return terms;
+  }
+
+  public int[] getTermFrequencies() {
+    return termFreqs;
+  }
+
+  public int indexOf(String termText) {
+    if(terms == null)
+      return -1;
+    int res = Arrays.binarySearch(terms, termText);
+    return res >= 0 ? res : -1;
+  }
+
+  public int[] indexesOf(String [] termNumbers, int start, int len) {
+    // TODO: there must be a more efficient way of doing this.
+    //       At least, we could advance the lower bound of the terms array
+    //       as we find valid indexes. Also, it might be possible to leverage
+    //       this even more by starting in the middle of the termNumbers array
+    //       and thus dividing the terms array maybe in half with each found index.
+    int res[] = new int[len];
+
+    for (int i=0; i < len; i++) {
+      res[i] = indexOf(termNumbers[start+ i]);
+    }
+    return res;
+  }
+}