X-Git-Url: https://git.mdrn.pl/pylucene.git/blobdiff_plain/a2e61f0c04805cfcb8706176758d1283c7e3a55c..aaeed5504b982cf3545252ab528713250aa33eed:/lucene-java-3.4.0/lucene/contrib/facet/src/java/org/apache/lucene/util/encoding/UniqueValuesIntEncoder.java?ds=sidebyside diff --git a/lucene-java-3.4.0/lucene/contrib/facet/src/java/org/apache/lucene/util/encoding/UniqueValuesIntEncoder.java b/lucene-java-3.4.0/lucene/contrib/facet/src/java/org/apache/lucene/util/encoding/UniqueValuesIntEncoder.java deleted file mode 100644 index 197962d..0000000 --- a/lucene-java-3.4.0/lucene/contrib/facet/src/java/org/apache/lucene/util/encoding/UniqueValuesIntEncoder.java +++ /dev/null @@ -1,71 +0,0 @@ -package org.apache.lucene.util.encoding; - -import java.io.IOException; -import java.io.OutputStream; - -/** - * 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. - */ - -/** - * An {@link IntEncoderFilter} which ensures only unique values are encoded. The - * implementation assumes the values given to {@link #encode(int)} are sorted. - * If this is not the case, you can chain this encoder with - * {@link SortingIntEncoder}. - * - * @lucene.experimental - */ -public final class UniqueValuesIntEncoder extends IntEncoderFilter { - - /** - * Denotes an illegal value which we can use to init 'prev' to. Since all - * encoded values are integers, this value is init to MAX_INT+1 and is of type - * long. Therefore we are guaranteed not to get this value in encode. - */ - private static final long ILLEGAL_VALUE = Integer.MAX_VALUE + 1; - - private long prev = ILLEGAL_VALUE; - - /** Constructs a new instance with the given encoder. */ - public UniqueValuesIntEncoder(IntEncoder encoder) { - super(encoder); - } - - @Override - public void encode(int value) throws IOException { - if (prev != value) { - encoder.encode(value); - prev = value; - } - } - - @Override - public IntDecoder createMatchingDecoder() { - return encoder.createMatchingDecoder(); - } - - @Override - public void reInit(OutputStream out) { - super.reInit(out); - prev = ILLEGAL_VALUE; - } - - @Override - public String toString() { - return "Unique (" + encoder.toString() + ")"; - } - -}