org.springframework.batch.admin.integration.StringToFileAdapter.java Source code

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Here is the source code for org.springframework.batch.admin.integration.StringToFileAdapter.java

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/*
 * Copyright 2009-2010 the original author or authors.
 *
 * 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.springframework.batch.admin.integration;

import java.io.File;
import java.util.Arrays;
import java.util.Collection;

import org.apache.commons.io.FileUtils;
import org.springframework.batch.admin.service.FileInfo;
import org.springframework.batch.admin.service.FileService;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.integration.annotation.MessageEndpoint;
import org.springframework.integration.annotation.ServiceActivator;
import org.springframework.util.Assert;

/**
 * Adapt a {@link FileUploadRequest} to a {@link File} by writing it out to a
 * temp directory.
 * 
 * @author Dave Syer
 * 
 */
@MessageEndpoint
public class StringToFileAdapter implements InitializingBean {

    private FileService fileService;

    /**
     * The service used to manage file lists and uploads.
     * 
     * @param fileService the {@link FileService} to set
     */
    public void setFileService(FileService fileService) {
        this.fileService = fileService;
    }

    public void afterPropertiesSet() {
        Assert.state(fileService != null, "FileService must be provided");
    }

    @ServiceActivator
    public Collection<FileInfo> convert(String request) throws Exception {

        if (request == null) {
            throw new IllegalArgumentException("Null input data");
        }

        String path = "upload.txt";
        FileInfo dest = fileService.createFile(path);
        FileUtils.writeStringToFile(fileService.getResource(dest.getPath()).getFile(), request);
        fileService.publish(dest);

        return Arrays.asList(dest);

    }

}