| /* |
| * 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.iotdb.tsfile.encoding.decoder; |
| |
| import org.apache.iotdb.tsfile.exception.encoding.TsFileDecodingException; |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSEncoding; |
| import org.apache.iotdb.tsfile.utils.Binary; |
| |
| import java.math.BigDecimal; |
| import java.nio.ByteBuffer; |
| |
| public class PlainDecoder extends Decoder { |
| |
| public PlainDecoder() { |
| super(TSEncoding.PLAIN); |
| } |
| |
| @Override |
| public boolean readBoolean(ByteBuffer buffer) { |
| return buffer.get() != 0; |
| } |
| |
| @Override |
| public short readShort(ByteBuffer buffer) { |
| return buffer.getShort(); |
| } |
| |
| @Override |
| public int readInt(ByteBuffer buffer) { |
| return buffer.getInt(); |
| // return ReadWriteForEncodingUtils.readVarInt(buffer); |
| } |
| |
| @Override |
| public long readLong(ByteBuffer buffer) { |
| return buffer.getLong(); |
| } |
| |
| @Override |
| public float readFloat(ByteBuffer buffer) { |
| return buffer.getFloat(); |
| } |
| |
| @Override |
| public double readDouble(ByteBuffer buffer) { |
| return buffer.getDouble(); |
| } |
| |
| @Override |
| public Binary readBinary(ByteBuffer buffer) { |
| int length = readInt(buffer); |
| byte[] buf = new byte[length]; |
| buffer.get(buf, 0, buf.length); |
| return new Binary(buf); |
| } |
| |
| @Override |
| public boolean hasNext(ByteBuffer buffer) { |
| return buffer.remaining() > 0; |
| } |
| |
| @Override |
| public BigDecimal readBigDecimal(ByteBuffer buffer) { |
| throw new TsFileDecodingException("Method readBigDecimal is not supported by PlainDecoder"); |
| } |
| |
| @Override |
| public void reset() { |
| // do nothing |
| } |
| } |