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Java example source code file (FileRecordReaderFactory.java)
The FileRecordReaderFactory.java Java example source code/* * * * Copyright 2015 Skymind,Inc. * * * * Licensed 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.deeplearning4j.cli.files; import com.google.common.base.Preconditions; import org.apache.commons.io.FilenameUtils; import org.canova.api.exceptions.UnknownFormatException; import org.canova.api.records.reader.RecordReader; import org.canova.api.records.reader.factory.RecordReaderFactory; import org.canova.api.records.reader.impl.CSVRecordReader; import org.canova.api.records.reader.impl.FileRecordReader; import org.canova.api.records.reader.impl.MatlabRecordReader; import org.canova.api.records.reader.impl.SVMLightRecordReader; import org.canova.api.split.FileSplit; import org.canova.api.split.InputSplit; import java.io.File; import java.net.URI; /** * Creates an instance of file record reader * * @author sonali */ public class FileRecordReaderFactory implements RecordReaderFactory { /** * Creates new RecordReader instance based on the input file extension * * @param uri location of input data * @return RecordReader instance * @throws UnknownFormatException */ @Override public RecordReader create(URI uri) throws UnknownFormatException { Preconditions.checkArgument(uri != null, "URI cannot be null"); File file = new File(uri.toString()); InputSplit split = new FileSplit(file); String fileNameExtension = FilenameUtils.getExtension(uri.toString()).toLowerCase(); RecordReader ret = null; switch (fileNameExtension) { case "csv": ret = new CSVRecordReader(); break; case "txt": ret = new FileRecordReader(); break; case "mat": ret = new MatlabRecordReader(); break; case "svmlight": ret = new SVMLightRecordReader(); break; default: throw new UnknownFormatException("Unknown file format"); } try { ret.initialize(split); } catch (Exception e) { throw new RuntimeException(e); } return ret; } } Other Java examples (source code examples)Here is a short list of links related to this Java FileRecordReaderFactory.java source code file: |
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