net.ageto.gyrex.impex.common.steps.impl.readers.FileReaderSimple.java Source code

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Here is the source code for net.ageto.gyrex.impex.common.steps.impl.readers.FileReaderSimple.java

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/*******************************************************************************
 * Copyright (c) 2010 AGETO Service GmbH and others.
 * All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html.
 *
 * Contributors:
 *     Mario Mokros - initial API and implementation
 *******************************************************************************/
package net.ageto.gyrex.impex.common.steps.impl.readers;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;

import net.ageto.gyrex.impex.common.steps.internal.ImpexStepsActivator;
import net.ageto.gyrex.impex.impl.BaseProcessStep;

import org.apache.commons.lang.StringUtils;

/**
 * A simple file reader.
 *
 */
public class FileReaderSimple extends BaseProcessStep<FileReaderLineBasedDefinition> {

    public static final String ID = ImpexStepsActivator.SYMBOLIC_NAME + ".file.reader.simple";

    public FileReaderSimple() {
        super(FileReaderLineBasedDefinition.class);
    }

    @Override
    protected StatusStep process() {

        String filename = (String) getInputParam(
                FileReaderLineBasedDefinition.InputParamNames.INPUT_FILENAME.name());

        if (StringUtils.isBlank(filename)) {
            processError("{0} missing input.", ID);
            return StatusStep.ERROR;
        }

        File f = new File(filename);
        byte[] buffer = new byte[(int) f.length()];
        InputStream in;
        try {
            in = new FileInputStream(f);
            in.read(buffer);
            in.close();
        } catch (FileNotFoundException e) {
            processError(e.getMessage());
            return StatusStep.ERROR;
        } catch (IOException e) {
            processError(e.getMessage());
            return StatusStep.ERROR;
        }

        setOutputParam(FileReaderLineBasedDefinition.OutputParamNames.OUTPUT_FILECONTENT.name(),
                new StringBuffer(new String(buffer)));

        processInfo("{0} has been completed successfully.", ID);

        return StatusStep.OK;
    }
}