| /* |
| * 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.sysds.runtime.transform.decode; |
| |
| import java.util.List; |
| |
| import org.apache.sysds.common.Types.ValueType; |
| import org.apache.sysds.runtime.matrix.data.FrameBlock; |
| import org.apache.sysds.runtime.matrix.data.MatrixBlock; |
| |
| /** |
| * Simple composite decoder that applies a list of decoders |
| * in specified order. By implementing the default decoder API |
| * it can be used as a drop-in replacement for any other decoder. |
| * |
| */ |
| public class DecoderComposite extends Decoder |
| { |
| private static final long serialVersionUID = 5790600547144743716L; |
| |
| private List<Decoder> _decoders = null; |
| |
| protected DecoderComposite(ValueType[] schema, List<Decoder> decoders) { |
| super(schema, null); |
| _decoders = decoders; |
| } |
| |
| @Override |
| public FrameBlock decode(MatrixBlock in, FrameBlock out) { |
| for( Decoder decoder : _decoders ) |
| out = decoder.decode(in, out); |
| return out; |
| } |
| |
| @Override |
| public void initMetaData(FrameBlock meta) { |
| for( Decoder decoder : _decoders ) |
| decoder.initMetaData(meta); |
| } |
| } |