Example usage for org.springframework.integration.file HeadDirectoryScanner HeadDirectoryScanner

Introduction

In this page you can find the example usage for org.springframework.integration.file HeadDirectoryScanner HeadDirectoryScanner.

Prototype

public HeadDirectoryScanner(int maxNumberOfFiles) 

Source Link

Usage

From source file:com.iana.dver.pdf.scrapper.DVERScrapperTask.java

public void readAndParseDVER() throws WrongConfigurationException, IOException {
    if (scanDir == null && archiveDir == null && maxFiles == null && xmlDir == null) {
        log.info("Wrong configuration used");
        throw new WrongConfigurationException("Some configuration is missing in job");
    }/*from  w w w.java  2s  .  c  o m*/

    // Fetching the files up to 50
    DirectoryScanner scanner = new HeadDirectoryScanner(Integer.parseInt(maxFiles.trim()));
    File dverScanDirectory = new File(scanDir);
    if (dverScanDirectory.isDirectory()) {
        List<File> files = scanner.listFiles(dverScanDirectory);
        // Sorting the list as per created time.
        Collections.sort(files, LastModifiedFileComparator.LASTMODIFIED_COMPARATOR);
        // Iterate the files list
        for (File file : files) {
            if (file.isFile()) {
                PDFTextStripperByArea textStripper = readDVER(file);
                generateDverXML(FilenameUtils.getBaseName(file.getName()), textStripper);
            }
        }
    } else {
        throw new WrongConfigurationException("The Path to look for DVER is not a directory");
    }
}

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From source file:org.springframework.integration.file.FileReadingMessageSource.java

/**
 * Creates a FileReadingMessageSource with a bounded queue of the given
 * capacity. This can be used to reduce the memory footprint of this
 * component when reading from a large directory.
 *
 * @param internalQueueCapacity//from www.j a  v  a2  s  .com
 *            the size of the queue used to cache files to be received
 *            internally. This queue can be made larger to optimize the
 *            directory scanning. With scanEachPoll set to false and the
 *            queue to a large size, it will be filled once and then
 *            completely emptied before a new directory listing is done.
 *            This is particularly useful to reduce scans of large numbers
 *            of files in a directory.
 */
public FileReadingMessageSource(int internalQueueCapacity) {
    this(null);
    Assert.isTrue(internalQueueCapacity > 0, "Cannot create a queue with non positive capacity");
    this.setScanner(new HeadDirectoryScanner(internalQueueCapacity));
}

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From source file:uk.ac.bbsrc.tgac.miso.tools.run.FileQueueMessageSource.java

/**
 * Creates a FileReadingMessageSource with a bounded queue of the given
 * capacity. This can be used to reduce the memory footprint of this
 * component when reading from a large directory.
 *
 * @param internalQueueCapacity the size of the queue used to cache files to be received
 *                              internally. This queue can be made larger to optimize the
 *                              directory scanning. With scanEachPoll set to false and the
 *                              queue to a large size, it will be filled once and then
 *                              completely emptied before a new directory listing is done.
 *                              This is particularly useful to reduce scans of large numbers
 *                              of files in a directory.
 *///w w  w.  java 2 s . c  o  m
public FileQueueMessageSource(int internalQueueCapacity) {
    this(null);
    Assert.isTrue(internalQueueCapacity > 0, "Cannot create a queue with non positive capacity");
    this.setScanner(new HeadDirectoryScanner(internalQueueCapacity));
}

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From source file:uk.ac.bbsrc.tgac.miso.tools.run.MultiFileQueueMessageSource.java

/**
 * Creates a MultiFileQueueMessageSource with a bounded queue of the given
 * capacity. This can be used to reduce the memory footprint of this
 * component when reading from a large directory.
 *
 * @param internalQueueCapacity the size of the queue used to cache files to be received
 *                              internally. This queue can be made larger to optimize the
 *                              directory scanning. With scanEachPoll set to false and the
 *                              queue to a large size, it will be filled once and then
 *                              completely emptied before a new directory listing is done.
 *                              This is particularly useful to reduce scans of large numbers
 *                              of files in a directory.
 *///from  w  w  w.  j av  a  2  s. com
public MultiFileQueueMessageSource(int internalQueueCapacity) {
    this(null);
    Assert.isTrue(internalQueueCapacity > 0, "Cannot create a queue with non positive capacity");
    this.setScanner(new HeadDirectoryScanner(internalQueueCapacity));
}

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