+++ /dev/null
-package org.apache.lucene.analysis.payloads;
-/**
- * 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.
- */
-
-
-/**
- * Utility methods for encoding payloads.
- *
- **/
-public class PayloadHelper {
-
- public static byte[] encodeFloat(float payload) {
- return encodeFloat(payload, new byte[4], 0);
- }
-
- public static byte[] encodeFloat(float payload, byte[] data, int offset){
- return encodeInt(Float.floatToIntBits(payload), data, offset);
- }
-
- public static byte[] encodeInt(int payload){
- return encodeInt(payload, new byte[4], 0);
- }
-
- public static byte[] encodeInt(int payload, byte[] data, int offset){
- data[offset] = (byte)(payload >> 24);
- data[offset + 1] = (byte)(payload >> 16);
- data[offset + 2] = (byte)(payload >> 8);
- data[offset + 3] = (byte) payload;
- return data;
- }
-
- /**
- * @param bytes
- * @see #decodeFloat(byte[], int)
- * @see #encodeFloat(float)
- * @return the decoded float
- */
- public static float decodeFloat(byte [] bytes){
- return decodeFloat(bytes, 0);
- }
-
- /**
- * Decode the payload that was encoded using {@link #encodeFloat(float)}.
- * NOTE: the length of the array must be at least offset + 4 long.
- * @param bytes The bytes to decode
- * @param offset The offset into the array.
- * @return The float that was encoded
- *
- * @see #encodeFloat(float)
- */
- public static final float decodeFloat(byte [] bytes, int offset){
-
- return Float.intBitsToFloat(decodeInt(bytes, offset));
- }
-
- public static final int decodeInt(byte [] bytes, int offset){
- return ((bytes[offset] & 0xFF) << 24) | ((bytes[offset + 1] & 0xFF) << 16)
- | ((bytes[offset + 2] & 0xFF) << 8) | (bytes[offset + 3] & 0xFF);
- }
-}