| /* |
| * 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. |
| */ |
| |
| package org.apache.lucene.document; |
| |
| import java.io.IOException; |
| |
| import org.apache.lucene.index.BinaryDocValues; |
| import org.apache.lucene.util.BytesRef; |
| |
| class BinaryRangeDocValues extends BinaryDocValues { |
| private final BinaryDocValues in; |
| private byte[] packedValue; |
| private final int numDims; |
| private final int numBytesPerDimension; |
| private int docID = -1; |
| |
| BinaryRangeDocValues(BinaryDocValues in, int numDims, int numBytesPerDimension) { |
| this.in = in; |
| this.numBytesPerDimension = numBytesPerDimension; |
| this.numDims = numDims; |
| this.packedValue = new byte[2 * numDims * numBytesPerDimension]; |
| } |
| |
| @Override |
| public int nextDoc() throws IOException { |
| docID = in.nextDoc(); |
| |
| if (docID != NO_MORE_DOCS) { |
| decodeRanges(); |
| } |
| |
| return docID; |
| } |
| |
| @Override |
| public int docID() { |
| return in.docID(); |
| } |
| |
| @Override |
| public long cost() { |
| return in.cost(); |
| } |
| |
| @Override |
| public int advance(int target) throws IOException { |
| int res = in.advance(target); |
| if (res != NO_MORE_DOCS) { |
| decodeRanges(); |
| } |
| |
| return res; |
| } |
| |
| @Override |
| public boolean advanceExact(int target) throws IOException { |
| boolean res = in.advanceExact(target); |
| if (res) { |
| decodeRanges(); |
| } |
| |
| return res; |
| } |
| |
| @Override |
| public BytesRef binaryValue() throws IOException { |
| return in.binaryValue(); |
| } |
| |
| public byte[] getPackedValue() { |
| return packedValue; |
| } |
| |
| private void decodeRanges() throws IOException { |
| BytesRef bytesRef = in.binaryValue(); |
| |
| // We reuse the existing allocated memory for packed values since all docvalues in this iterator |
| // should be exactly same in indexed structure, hence the byte representations in length should be identical |
| System.arraycopy(bytesRef.bytes, bytesRef.offset, packedValue, 0, 2 * numDims * numBytesPerDimension); |
| } |
| } |