Example usage for java.io File createTempFile

Introduction

In this page you can find the example usage for java.io File createTempFile.

Prototype

public static File createTempFile(String prefix, String suffix) throws IOException 

Source Link

Document

Creates an empty file in the default temporary-file directory, using the given prefix and suffix to generate its name.

Usage

From source file:edu.umn.cs.spatialHadoop.util.FileUtil.java

/**
 * Copies a part of a file from a remote file system (e.g., HDFS) to a local
 * file. Returns a path to a local temporary file.
 * // w  w w . j  a v a2s .com
 * @param conf
 * @param split
 * @return
 * @throws IOException
 */
public static String copyFileSplit(Configuration conf, FileSplit split) throws IOException {
    FileSystem fs = split.getPath().getFileSystem(conf);

    // Special case of a local file. Skip copying the file
    if (fs instanceof LocalFileSystem && split.getStart() == 0)
        return split.getPath().toUri().getPath();

    File destFile = File.createTempFile(split.getPath().getName(), "tmp");
    // Special handling for HTTP files for more efficiency
    /*if (fs instanceof HTTPFileSystem && split.getStart() == 0) {
      URL website = split.getPath().toUri().toURL();
      ReadableByteChannel rbc = Channels.newChannel(website.openStream());
      FileOutputStream fos = new FileOutputStream(destFile);
      fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
      fos.close();
      return destFile.getAbsolutePath();
    }*/

    // Length of input file. We do not depend on split.length because it is
    // not
    // set by input format for performance reason. Setting it in the input
    // format would cost a lot of time because it runs on the client machine
    // while the record reader runs on slave nodes in parallel
    long length = fs.getFileStatus(split.getPath()).getLen();

    FSDataInputStream in = fs.open(split.getPath());
    in.seek(split.getStart());
    ReadableByteChannel rbc = Channels.newChannel(in);

    // Prepare output file for write
    FileOutputStream out = new FileOutputStream(destFile);

    out.getChannel().transferFrom(rbc, 0, length);

    in.close();
    out.close();
    return destFile.getAbsolutePath();
}

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From source file:io.druid.indexer.HdfsClasspathSetupTest.java

@BeforeClass
public static void setupStatic() throws IOException, ClassNotFoundException {
    hdfsTmpDir = File.createTempFile("hdfsClasspathSetupTest", "dir");
    hdfsTmpDir.deleteOnExit();//from  w  w w .  j  av a2s .com
    if (!hdfsTmpDir.delete()) {
        throw new IOException(String.format("Unable to delete hdfsTmpDir [%s]", hdfsTmpDir.getAbsolutePath()));
    }
    conf = new Configuration(true);
    conf.set(MiniDFSCluster.HDFS_MINIDFS_BASEDIR, hdfsTmpDir.getAbsolutePath());
    miniCluster = new MiniDFSCluster.Builder(conf).build();
}

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From source file:net.lmxm.ute.utils.FileSystemUtilsTest.java

/**
 * Test convert to file objects./*from w ww . j a v  a2 s.  c  om*/
 * 
 * @throws IOException Signals that an I/O exception has occurred.
 */
@Test
public void testConvertToFileObjects() throws IOException {
    // Create temp file that we can locate
    final File tempFile1 = File.createTempFile("UTE", ".TESTFILE");
    FileUtils.touch(tempFile1);
    tempFile1.deleteOnExit();

    final File tempFile2 = File.createTempFile("ute", ".testfile");
    FileUtils.touch(tempFile2);
    tempFile2.deleteOnExit();

    // Run the test
    final FileReference fileReference = new FileReference();
    fileReference.setName("UTE*.TESTFILE");

    final List<FileReference> fileReferences = new ArrayList<FileReference>();
    fileReferences.add(fileReference);

    final List<File> files = FileSystemUtils.convertToFileObjects(TMP_DIR, fileReferences);
    assertNotNull(files);
    assertTrue(files.size() == 1);

    // Delete the temp file we created for this test
    tempFile1.delete();
    tempFile2.delete();
}

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From source file:Exporters.DocxService.java

public InputStream mergeDocx(final List<InputStream> streams) throws Docx4JException, IOException {

    WordprocessingMLPackage target = null;
    final File generated = File.createTempFile("generated", ".docx");

    int chunkId = 0;
    Iterator<InputStream> it = streams.iterator();
    while (it.hasNext()) {
        InputStream is = it.next();
        if (is != null) {
            if (target == null) {
                // Copy first (master) document
                OutputStream os = new FileOutputStream(generated);
                os.write(IOUtils.toByteArray(is));
                os.close();//from  ww w  .  ja  v  a2 s  .co  m

                target = WordprocessingMLPackage.load(generated);
            } else {
                // Attach the others (Alternative input parts)
                insertDocx(target.getMainDocumentPart(), IOUtils.toByteArray(is), chunkId++);
            }
        }
    }

    if (target != null) {
        target.save(generated);
        return new FileInputStream(generated);
    } else {
        return null;
    }
}

---

From source file:eu.udig.omsbox.view.actions.OmsScriptGenerationAction.java

public void run(IAction action) {
    if (view instanceof OmsBoxView) {
        OmsBoxView omsView = (OmsBoxView) view;
        try {//from   w  w  w. j  a va  2 s .  c  o  m
            String script = omsView.generateScriptForSelectedModule();
            if (script == null) {
                return;
            }
            Program program = Program.findProgram(".txt");
            if (program != null) {
                File tempFile = File.createTempFile("omsbox_", ".oms");
                if (tempFile == null || !tempFile.exists() || tempFile.getAbsolutePath() == null) {
                    // try with user's home folder
                    String ts = new DateTime().toString(OmsBoxConstants.dateTimeFormatterYYYYMMDDHHMMSS);
                    String userHomePath = System.getProperty("user.home"); //$NON-NLS-1$

                    File userHomeFile = new File(userHomePath);
                    if (!userHomeFile.exists()) {
                        String message = "Unable to create the oms script both in the temp folder and user home. Check your permissions.";
                        ExceptionDetailsDialog.openError(null, message, IStatus.ERROR, OmsBoxPlugin.PLUGIN_ID,
                                new RuntimeException());
                        return;
                    }
                    tempFile = new File(userHomeFile, "omsbox_" + ts + ".oms");
                }
                FileUtils.writeStringToFile(tempFile, script);

                program.execute(tempFile.getAbsolutePath());

                // cleanup when leaving uDig
                // tempFile.deleteOnExit();
            } else {
                // make it the good old way prompting
                FileDialog fileDialog = new FileDialog(view.getSite().getShell(), SWT.SAVE);
                String path = fileDialog.open();
                if (path == null || path.length() < 1) {
                    return;
                }
                FileUtils.writeStringToFile(new File(path), script);
            }

        } catch (Exception e) {
            e.printStackTrace();
            String message = "An error ocurred while generating the script.";
            ExceptionDetailsDialog.openError(null, message, IStatus.ERROR, OmsBoxPlugin.PLUGIN_ID, e);
        }

    }
}

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From source file:com.wavemaker.commons.util.utils.ClassLoaderUtilsTest.java

@Test
public void tempClassLoader_getResourceTest() throws Exception {

    File sourceJar = new ClassPathResource("com/wavemaker/commons/foojar.jar").getFile();
    File jar = File.createTempFile("tempClassLoader_getClassTest", ".jar");
    jar.deleteOnExit();//www. ja v a2  s  .  c  o  m
    FileUtils.copyFile(sourceJar, jar);

    try {
        ClassLoader cl = ClassLoaderUtils.getTempClassLoaderForFile(jar);
        InputStream is = ClassLoaderUtils.getResourceAsStream("foo/bar/baz/JarType.java", cl);
        assertNotNull(is);
        assertTrue(is.available() > 0);
        is.close();
    } finally {
        jar.delete();
    }
}

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From source file:io.druid.storage.hdfs.HdfsDataSegmentPullerTest.java

@BeforeClass
public static void setupStatic() throws IOException {
    hdfsTmpDir = File.createTempFile("hdfsHandlerTest", "dir");
    if (!hdfsTmpDir.delete()) {
        throw new IOE("Unable to delete hdfsTmpDir [%s]", hdfsTmpDir.getAbsolutePath());
    }/*from  w  w  w  .ja v a  2 s.c  om*/
    conf = new Configuration(true);
    conf.set(MiniDFSCluster.HDFS_MINIDFS_BASEDIR, hdfsTmpDir.getAbsolutePath());
    miniCluster = new MiniDFSCluster.Builder(conf).build();
    uriBase = miniCluster.getURI(0);

    final File tmpFile = File.createTempFile("hdfsHandlerTest", ".data");
    tmpFile.delete();
    try {
        Files.copy(new ByteArrayInputStream(pathByteContents), tmpFile.toPath());
        try (OutputStream stream = miniCluster.getFileSystem().create(filePath)) {
            Files.copy(tmpFile.toPath(), stream);
        }
    } finally {
        tmpFile.delete();
    }
}

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From source file:edu.unc.lib.dl.IngestProcessorFactoryTest.java

@Test
public void testFindMETSPackageProcessor() {
    try {/*from w ww .  j  a  va 2 s.c  om*/
        File test = File.createTempFile("test", ".txt");
        METSPackageSIP foo = new METSPackageSIP(new PID("test:1"), test, false);
        this.getSipProcessorFactory().getSIPProcessor(foo);
    } catch (IOException e) {
        log.debug(e);
        fail(e.getMessage());
    } catch (IngestException e) {
        log.debug(e);
        fail(e.getMessage());
    }
}

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From source file:eu.linda.analytics.formats.RDFInputFormat.java

@Override
public AbstractList importData4weka(String query_id, boolean isForRDFOutput, Analytics analytics) {

    String queryURI = connectionController.getQueryURI(query_id);

    helpfulFunctions.nicePrintMessage("import data from uri " + queryURI);

    Instances data = null;// w  w  w.  j  a  v  a  2s  .co m
    try {
        float timeToGetQuery = 0;
        long startTimeToGetQuery = System.currentTimeMillis();
        URL url = new URL(queryURI);
        if (!helpfulFunctions.isURLResponsive(url)) {
            return null;
        }
        File tmpfile4lindaquery = File.createTempFile("tmpfile4lindaquery" + query_id, ".tmp");
        FileUtils.copyURLToFile(url, tmpfile4lindaquery);

        System.out.println("Downloaded File Query: " + tmpfile4lindaquery);

        CSVLoader loader = new CSVLoader();
        loader.setSource(tmpfile4lindaquery);
        if (isForRDFOutput) {
            loader.setStringAttributes("1,2");
        }

        loader.setFieldSeparator(",");
        data = loader.getDataSet();
        data.setClassIndex(data.numAttributes() - 1);

        FileInputStream fis = null;
        try {

            fis = new FileInputStream(tmpfile4lindaquery);
            System.out.println("fis.getChannel().size() " + fis.getChannel().size());
            analytics.setData_size(analytics.getData_size() + fis.getChannel().size());
        } finally {
            fis.close();
        }

        // Get elapsed time in milliseconds
        long elapsedTimeToGetQueryMillis = System.currentTimeMillis() - startTimeToGetQuery;
        // Get elapsed time in seconds
        timeToGetQuery = elapsedTimeToGetQueryMillis / 1000F;
        analytics.setTimeToGet_data(analytics.getTimeToGet_data() + timeToGetQuery);
        System.out.println("timeToGetQuery" + timeToGetQuery);

        connectionController.updateLindaAnalyticsInputDataPerformanceTime(analytics);

    } catch (Exception ex) {
        Logger.getLogger(ArffInputFormat.class.getName()).log(Level.SEVERE, null, ex);
    }
    return data;

}

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From source file:com.stimulus.archiva.extraction.RTFExtractor.java

public Reader getText(InputStream is, Charset charset, IndexInfo indexInfo) throws ExtractionException {

    Reader reader = null;//from w w  w  . java2s. c  om
    FileWriter writer = null;
    File file = null;
    try {
        reader = new InputStreamReader(is);
        file = File.createTempFile("extract_rtf", ".tmp");
        indexInfo.addDeleteFile(file);
        writer = new FileWriter(file);
        DefaultStyledDocument doc = new DefaultStyledDocument();
        new RTFEditorKit().read(reader, doc, 0);
        writer.write(doc.getText(0, doc.getLength()));
    } catch (Throwable ioe) {
        throw new ExtractionException("failed to parse rtf document", ioe, logger);
    } finally {
        if (reader != null) {
            try {
                reader.close();
            } catch (IOException ioe) {
            }
        }

        if (writer != null) {
            try {
                writer.close();
            } catch (IOException ioe) {
            }
        }
    }
    try {
        Reader outReader = new FileReader(file);
        indexInfo.addReader(outReader);
        return outReader;
    } catch (Exception ex) {
        throw new ExtractionException("failed to extract text from powerpoint document", ex, logger,
                ChainedException.Level.DEBUG);
    }

}

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