pylucene 3.5.0-3

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

diff --git a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/search/FieldDocSortedHitQueue.java b/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/search/FieldDocSortedHitQueue.java
deleted file mode 100644 (file)
index 324b0ed..0000000
--- a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/search/FieldDocSortedHitQueue.java
+++ /dev/null
@@ -1,137 +0,0 @@
-package org.apache.lucene.search;
-
-/**
- * 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.util.PriorityQueue;
-import java.io.IOException;
-import java.text.Collator;
-import java.util.Locale;
-
-/**
- * Expert: Collects sorted results from Searchable's and collates them.
- * The elements put into this queue must be of type FieldDoc.
- *
- * <p>Created: Feb 11, 2004 2:04:21 PM
- *
- * @since   lucene 1.4
- */
-class FieldDocSortedHitQueue extends PriorityQueue<FieldDoc> {
-
-  volatile SortField[] fields = null;
-
-  // used in the case where the fields are sorted by locale
-  // based strings
-  volatile Collator[] collators = null;
-
-  volatile FieldComparator[] comparators = null;
-
-
-  /**
-   * Creates a hit queue sorted by the given list of fields.
-   * @param fields Fieldable names, in priority order (highest priority first).
-   * @param size  The number of hits to retain.  Must be greater than zero.
-   */
-  FieldDocSortedHitQueue (int size) {
-    initialize (size);
-  }
-
-
-  /**
-   * Allows redefinition of sort fields if they are <code>null</code>.
-   * This is to handle the case using ParallelMultiSearcher where the
-   * original list contains AUTO and we don't know the actual sort
-   * type until the values come back.  The fields can only be set once.
-   * This method should be synchronized external like all other PQ methods.
-   * @param fields
-   */
-  void setFields (SortField[] fields) throws IOException {
-    this.fields = fields;
-    this.collators = hasCollators (fields);
-    comparators = new FieldComparator[fields.length];
-    for(int fieldIDX=0;fieldIDX<fields.length;fieldIDX++) {
-      comparators[fieldIDX] = fields[fieldIDX].getComparator(1, fieldIDX);
-    }
-  }
-
-
-  /** Returns the fields being used to sort. */
-  SortField[] getFields() {
-    return fields;
-  }
-
-
-  /** Returns an array of collators, possibly <code>null</code>.  The collators
-   * correspond to any SortFields which were given a specific locale.
-   * @param fields Array of sort fields.
-   * @return Array, possibly <code>null</code>.
-   */
-  private Collator[] hasCollators (final SortField[] fields) {
-    if (fields == null) return null;
-    Collator[] ret = new Collator[fields.length];
-    for (int i=0; i<fields.length; ++i) {
-      Locale locale = fields[i].getLocale();
-      if (locale != null)
-        ret[i] = Collator.getInstance (locale);
-    }
-    return ret;
-  }
-
-
-  /**
-   * Returns whether <code>a</code> is less relevant than <code>b</code>.
-   * @param a ScoreDoc
-   * @param b ScoreDoc
-   * @return <code>true</code> if document <code>a</code> should be sorted after document <code>b</code>.
-   */
-  @SuppressWarnings("unchecked") @Override
-  protected final boolean lessThan(final FieldDoc docA, final FieldDoc docB) {
-    final int n = fields.length;
-    int c = 0;
-    for (int i=0; i<n && c==0; ++i) {
-      final int type = fields[i].getType();
-      if (type == SortField.STRING) {
-        final String s1 = (String) docA.fields[i];
-        final String s2 = (String) docB.fields[i];
-        // null values need to be sorted first, because of how FieldCache.getStringIndex()
-        // works - in that routine, any documents without a value in the given field are
-        // put first.  If both are null, the next SortField is used
-        if (s1 == null) {
-          c = (s2 == null) ? 0 : -1;
-        } else if (s2 == null) {
-          c = 1;
-        } else if (fields[i].getLocale() == null) {
-          c = s1.compareTo(s2);
-        } else {
-          c = collators[i].compare(s1, s2);
-        }
-      } else {
-        c = comparators[i].compareValues(docA.fields[i], docB.fields[i]);
-      }
-      // reverse sort
-      if (fields[i].getReverse()) {
-        c = -c;
-      }
-    }
-
-    // avoid random sort order that could lead to duplicates (bug #31241):
-    if (c == 0)
-      return docA.doc > docB.doc;
-
-    return c > 0;
-  }
-}