pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.4.0 / lucene / src / java / org / apache / lucene / search / spans / SpanScorer.java

diff --git a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/search/spans/SpanScorer.java b/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/search/spans/SpanScorer.java
deleted file mode 100644 (file)
index 1d2d9f5..0000000
--- a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/search/spans/SpanScorer.java
+++ /dev/null
@@ -1,118 +0,0 @@
-package org.apache.lucene.search.spans;
-
-/**
- * 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.IOException;
-
-import org.apache.lucene.search.Explanation;
-import org.apache.lucene.search.Weight;
-import org.apache.lucene.search.Scorer;
-import org.apache.lucene.search.Similarity;
-
-/**
- * Public for extension only.
- */
-public class SpanScorer extends Scorer {
-  protected Spans spans;
-  protected byte[] norms;
-  protected float value;
-
-  protected boolean more = true;
-
-  protected int doc;
-  protected float freq;
-
-  protected SpanScorer(Spans spans, Weight weight, Similarity similarity, byte[] norms)
-  throws IOException {
-    super(similarity, weight);
-    this.spans = spans;
-    this.norms = norms;
-    this.value = weight.getValue();
-    if (this.spans.next()) {
-      doc = -1;
-    } else {
-      doc = NO_MORE_DOCS;
-      more = false;
-    }
-  }
-
-  @Override
-  public int nextDoc() throws IOException {
-    if (!setFreqCurrentDoc()) {
-      doc = NO_MORE_DOCS;
-    }
-    return doc;
-  }
-
-  @Override
-  public int advance(int target) throws IOException {
-    if (!more) {
-      return doc = NO_MORE_DOCS;
-    }
-    if (spans.doc() < target) { // setFreqCurrentDoc() leaves spans.doc() ahead
-      more = spans.skipTo(target);
-    }
-    if (!setFreqCurrentDoc()) {
-      doc = NO_MORE_DOCS;
-    }
-    return doc;
-  }
-  
-  protected boolean setFreqCurrentDoc() throws IOException {
-    if (!more) {
-      return false;
-    }
-    doc = spans.doc();
-    freq = 0.0f;
-    do {
-      int matchLength = spans.end() - spans.start();
-      freq += getSimilarity().sloppyFreq(matchLength);
-      more = spans.next();
-    } while (more && (doc == spans.doc()));
-    return true;
-  }
-
-  @Override
-  public int docID() { return doc; }
-
-  @Override
-  public float score() throws IOException {
-    float raw = getSimilarity().tf(freq) * value; // raw score
-    return norms == null? raw : raw * getSimilarity().decodeNormValue(norms[doc]); // normalize
-  }
-  
-  @Override
-  public float freq() throws IOException {
-    return freq;
-  }
-
-  /** This method is no longer an official member of {@link Scorer},
-   * but it is needed by SpanWeight to build an explanation. */
-  protected Explanation explain(final int doc) throws IOException {
-    Explanation tfExplanation = new Explanation();
-
-    int expDoc = advance(doc);
-
-    float phraseFreq = (expDoc == doc) ? freq : 0.0f;
-    tfExplanation.setValue(getSimilarity().tf(phraseFreq));
-    tfExplanation.setDescription("tf(phraseFreq=" + phraseFreq + ")");
-
-    return tfExplanation;
-  }
-
-}