pylucene 3.5.0-3

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

diff --git a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/search/MultiCollector.java b/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/search/MultiCollector.java
deleted file mode 100644 (file)
index b1d79e4..0000000
--- a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/search/MultiCollector.java
+++ /dev/null
@@ -1,124 +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 java.io.IOException;
-
-import org.apache.lucene.index.IndexReader;
-import org.apache.lucene.search.Collector;
-import org.apache.lucene.search.Scorer;
-
-/**
- * A {@link Collector} which allows running a search with several
- * {@link Collector}s. It offers a static {@link #wrap} method which accepts a
- * list of collectors and wraps them with {@link MultiCollector}, while
- * filtering out the <code>null</code> null ones.
- */
-public class MultiCollector extends Collector {
-
-  /**
-   * Wraps a list of {@link Collector}s with a {@link MultiCollector}. This
-   * method works as follows:
-   * <ul>
-   * <li>Filters out the <code>null</code> collectors, so they are not used
-   * during search time.
-   * <li>If the input contains 1 real collector (i.e. non-<code>null</code> ),
-   * it is returned.
-   * <li>Otherwise the method returns a {@link MultiCollector} which wraps the
-   * non-<code>null</code> ones.
-   * </ul>
-   * 
-   * @throws IllegalArgumentException
-   *           if either 0 collectors were input, or all collectors are
-   *           <code>null</code>.
-   */
-  public static Collector wrap(Collector... collectors) {
-    // For the user's convenience, we allow null collectors to be passed.
-    // However, to improve performance, these null collectors are found
-    // and dropped from the array we save for actual collection time.
-    int n = 0;
-    for (Collector c : collectors) {
-      if (c != null) {
-        n++;
-      }
-    }
-
-    if (n == 0) {
-      throw new IllegalArgumentException("At least 1 collector must not be null");
-    } else if (n == 1) {
-      // only 1 Collector - return it.
-      Collector col = null;
-      for (Collector c : collectors) {
-        if (c != null) {
-          col = c;
-          break;
-        }
-      }
-      return col;
-    } else if (n == collectors.length) {
-      return new MultiCollector(collectors);
-    } else {
-      Collector[] colls = new Collector[n];
-      n = 0;
-      for (Collector c : collectors) {
-        if (c != null) {
-          colls[n++] = c;
-        }
-      }
-      return new MultiCollector(colls);
-    }
-  }
-  
-  private final Collector[] collectors;
-
-  private MultiCollector(Collector... collectors) {
-    this.collectors = collectors;
-  }
-
-  @Override
-  public boolean acceptsDocsOutOfOrder() {
-    for (Collector c : collectors) {
-      if (!c.acceptsDocsOutOfOrder()) {
-        return false;
-      }
-    }
-    return true;
-  }
-
-  @Override
-  public void collect(int doc) throws IOException {
-    for (Collector c : collectors) {
-      c.collect(doc);
-    }
-  }
-
-  @Override
-  public void setNextReader(IndexReader reader, int o) throws IOException {
-    for (Collector c : collectors) {
-      c.setNextReader(reader, o);
-    }
-  }
-
-  @Override
-  public void setScorer(Scorer s) throws IOException {
-    for (Collector c : collectors) {
-      c.setScorer(s);
-    }
-  }
-
-}