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/facet/search/PayloadIterator.java?ds=sidebyside diff --git a/lucene-java-3.4.0/lucene/contrib/facet/src/java/org/apache/lucene/facet/search/PayloadIterator.java b/lucene-java-3.4.0/lucene/contrib/facet/src/java/org/apache/lucene/facet/search/PayloadIterator.java deleted file mode 100644 index 3c76a3d..0000000 --- a/lucene-java-3.4.0/lucene/contrib/facet/src/java/org/apache/lucene/facet/search/PayloadIterator.java +++ /dev/null @@ -1,125 +0,0 @@ -package org.apache.lucene.facet.search; - -import java.io.IOException; - -import org.apache.lucene.index.IndexReader; -import org.apache.lucene.index.Term; -import org.apache.lucene.index.TermPositions; - -/** - * 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. - */ - -/** - * A utility class for iterating through a posting list of a given term and - * retrieving the payload of the first occurrence in every document. Comes with - * its own working space (buffer). - * - * @lucene.experimental - */ -public class PayloadIterator { - - protected byte[] buffer; - protected int payloadLength; - - TermPositions tp; - - private boolean hasMore; - - public PayloadIterator(IndexReader indexReader, Term term) - throws IOException { - this(indexReader, term, new byte[1024]); - } - - public PayloadIterator(IndexReader indexReader, Term term, byte[] buffer) - throws IOException { - this.buffer = buffer; - this.tp = indexReader.termPositions(term); - } - - /** - * (re)initialize the iterator. Should be done before the first call to - * {@link #setdoc(int)}. Returns false if there is no category list found - * (no setdoc() will never return true). - */ - public boolean init() throws IOException { - hasMore = tp.next(); - return hasMore; - } - - /** - * Skip forward to document docId. Return true if this document exists and - * has any payload. - *

- * Users should call this method with increasing docIds, and implementations - * can assume that this is the case. - */ - public boolean setdoc(int docId) throws IOException { - if (!hasMore) { - return false; - } - - if (tp.doc() > docId) { - return false; - } - - // making sure we have the requested document - if (tp.doc() < docId) { - // Skipping to requested document - if (!tp.skipTo(docId)) { - this.hasMore = false; - return false; - } - - // If document not found (skipped to much) - if (tp.doc() != docId) { - return false; - } - } - - // Prepare for payload extraction - tp.nextPosition(); - - this.payloadLength = tp.getPayloadLength(); - if (this.payloadLength == 0) { - return false; - } - - if (this.payloadLength > this.buffer.length) { - // Growing if necessary. - this.buffer = new byte[this.payloadLength * 2 + 1]; - } - // Loading the payload - tp.getPayload(this.buffer, 0); - - return true; - } - - /** - * Get the buffer with the content of the last read payload. - */ - public byte[] getBuffer() { - return buffer; - } - - /** - * Get the length of the last read payload. - */ - public int getPayloadLength() { - return payloadLength; - } - -}