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package org.apache.lucene.facet.index.categorypolicy;
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import java.io.Serializable;
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import org.apache.lucene.facet.index.streaming.CategoryParentsStream;
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import org.apache.lucene.facet.taxonomy.CategoryPath;
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* Filtering category paths in {@link CategoryParentsStream}, where a given
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* category is added to the stream, and than all its parents are being
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* added one after the other by successively removing the last component. <br>
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* That loop should have a stop point - the default approach (excluding the
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* ROOT) is implemented in {@link DefaultOrdinalPolicy}.
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* @lucene.experimental
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public interface PathPolicy extends Serializable {
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* Check whether a given category path should be added to the stream.
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* A given category path which is to be tested for stream
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* @return <code>true</code> if the category path should be added.
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* <code>false</code> otherwise.
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public abstract boolean shouldAdd(CategoryPath categoryPath);
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