Example usage for java.util.concurrent LinkedBlockingQueue contains

Introduction

In this page you can find the example usage for java.util.concurrent LinkedBlockingQueue contains.

Prototype

public boolean contains(Object o) 

Source Link

Document

Returns true if this queue contains the specified element.

Usage

From source file:au.org.ala.spatial.analysis.layers.LayerDistanceIndex.java

/**
 * @param threadcount    number of threads to run analysis.
 * @param onlyThesePairs array of distances to run as fieldId1 + " " +
 *                       fieldId2 where fieldId1.compareTo(fieldId2) &lt 0 or null for all missing
 *                       distances.//from w w w . j a va  2 s . com
 * @throws InterruptedException
 */
public void occurrencesUpdate(int threadcount, String[] onlyThesePairs) throws InterruptedException {

    //create distances file if it does not exist.
    File layerDistancesFile = new File(IntersectConfig.getAlaspatialOutputPath() + LAYER_DISTANCE_FILE);
    if (!layerDistancesFile.exists()) {
        FileWriter fw = null;
        try {
            fw = new FileWriter(layerDistancesFile);
            fw.flush();
        } catch (Exception e) {
            logger.error(e.getMessage(), e);
        } finally {
            if (fw != null) {
                try {
                    fw.close();
                } catch (Exception e) {
                    logger.error(e.getMessage(), e);
                }
            }
        }
    }

    Map<String, Double> map = loadDistances();

    LinkedBlockingQueue<String> todo = new LinkedBlockingQueue();

    if (onlyThesePairs != null && onlyThesePairs.length > 0) {
        for (String s : onlyThesePairs) {
            todo.add(s);
        }
    } else {
        //find all environmental layer analysis files
        File root = new File(IntersectConfig.getAlaspatialOutputPath());
        File[] dirs = root.listFiles(new FileFilter() {

            @Override
            public boolean accept(File pathname) {
                return pathname != null && pathname.isDirectory();
            }
        });

        HashMap<String, String> domains = new HashMap<String, String>();
        for (File dir : dirs) {
            //iterate through files so we get everything
            File[] files = new File(dir.getPath()).listFiles(new FileFilter() {

                @Override
                public boolean accept(File pathname) {
                    return pathname.getName().endsWith(".grd") && pathname.getName().startsWith("el");
                }
            });

            for (int i = 0; i < files.length; i++) {
                for (int j = i + 1; j < files.length; j++) {
                    String file1 = files[i].getName().replace(".grd", "");
                    String file2 = files[j].getName().replace(".grd", "");

                    //only operate on file names that are valid fields
                    if (Client.getFieldDao().getFieldById(file1) != null
                            && Client.getFieldDao().getFieldById(file2) != null) {

                        String domain1 = domains.get(file1);
                        if (domain1 == null) {
                            String pid1 = Client.getFieldDao().getFieldById(file1).getSpid();
                            domain1 = Client.getLayerDao().getLayerById(Integer.parseInt(pid1)).getdomain();
                            domains.put(file1, domain1);
                        }
                        String domain2 = domains.get(file2);
                        if (domain2 == null) {
                            String pid2 = Client.getFieldDao().getFieldById(file2).getSpid();
                            domain2 = Client.getLayerDao().getLayerById(Integer.parseInt(pid2)).getdomain();
                            domains.put(file2, domain2);
                        }

                        String key = (file1.compareTo(file2) < 0) ? file1 + " " + file2 : file2 + " " + file1;

                        //domain test
                        if (isSameDomain(parseDomain(domain1), parseDomain(domain2))) {
                            if (!map.containsKey(key) && !todo.contains(key)) {
                                todo.put(key);
                            }
                        }
                    }
                }
            }
        }
    }

    LinkedBlockingQueue<String> toDisk = new LinkedBlockingQueue<String>();
    CountDownLatch cdl = new CountDownLatch(todo.size());
    CalcThread[] threads = new CalcThread[threadcount];
    for (int i = 0; i < threadcount; i++) {
        threads[i] = new CalcThread(cdl, todo, toDisk);
        threads[i].start();
    }

    ToDiskThread toDiskThread = new ToDiskThread(
            IntersectConfig.getAlaspatialOutputPath() + LAYER_DISTANCE_FILE, toDisk);
    toDiskThread.start();

    cdl.await();

    for (int i = 0; i < threadcount; i++) {
        threads[i].interrupt();
    }

    toDiskThread.interrupt();
}

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From source file:org.ala.spatial.analysis.index.LayerDistanceIndex.java

/**
 * @param threadcount    number of threads to run analysis.
 * @param onlyThesePairs array of distances to run as fieldId1 + " " +
 *                       fieldId2 where fieldId1.compareTo(fieldId2) &lt 0 or null for all missing
 *                       distances.//from  w  w  w  .  j  a  va 2  s  .  c  o m
 * @throws InterruptedException
 */
public void occurrencesUpdate(int threadcount, String[] onlyThesePairs) throws InterruptedException {

    //create distances file if it does not exist.
    File layerDistancesFile = new File(AlaspatialProperties.getAnalysisWorkingDir() + LAYER_DISTANCE_FILE);
    if (!layerDistancesFile.exists()) {
        try {
            FileWriter fw = new FileWriter(layerDistancesFile);
            fw.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    Map<String, Double> map = loadDistances();

    LinkedBlockingQueue<String> todo = new LinkedBlockingQueue();

    if (onlyThesePairs != null && onlyThesePairs.length > 0) {
        for (String s : onlyThesePairs) {
            todo.add(s);
        }
    } else {
        //find all environmental layer analysis files
        File root = new File(AlaspatialProperties.getAnalysisLayersDir());
        File[] dirs = root.listFiles(new FileFilter() {

            @Override
            public boolean accept(File pathname) {
                return pathname != null && pathname.isDirectory();
            }
        });

        HashMap<String, String> domains = new HashMap<String, String>();
        for (File dir : dirs) {
            //iterate through files so we get everything
            File[] files = new File(dir.getPath()).listFiles(new FileFilter() {

                @Override
                public boolean accept(File pathname) {
                    return pathname.getName().endsWith(".grd") && pathname.getName().startsWith("el");
                }
            });

            for (int i = 0; i < files.length; i++) {
                for (int j = i + 1; j < files.length; j++) {
                    String file1 = files[i].getName().replace(".grd", "");
                    String file2 = files[j].getName().replace(".grd", "");

                    //only operate on file names that are valid fields
                    if (Client.getFieldDao().getFieldById(file1) != null
                            && Client.getFieldDao().getFieldById(file2) != null) {

                        String domain1 = domains.get(file1);
                        if (domain1 == null) {
                            String pid1 = Client.getFieldDao().getFieldById(file1).getSpid();
                            domain1 = Client.getLayerDao().getLayerById(Integer.parseInt(pid1)).getdomain();
                            domains.put(file1, domain1);
                        }
                        String domain2 = domains.get(file2);
                        if (domain2 == null) {
                            String pid2 = Client.getFieldDao().getFieldById(file2).getSpid();
                            domain2 = Client.getLayerDao().getLayerById(Integer.parseInt(pid2)).getdomain();
                            domains.put(file2, domain2);
                        }

                        String key = (file1.compareTo(file2) < 0) ? file1 + " " + file2 : file2 + " " + file1;

                        //domain test
                        if (isSameDomain(parseDomain(domain1), parseDomain(domain2))) {
                            if (!map.containsKey(key) && !todo.contains(key)) {
                                todo.put(key);
                            }
                        }
                    }
                }
            }
        }
    }

    LinkedBlockingQueue<String> toDisk = new LinkedBlockingQueue<String>();
    CountDownLatch cdl = new CountDownLatch(todo.size());
    CalcThread[] threads = new CalcThread[threadcount];
    for (int i = 0; i < threadcount; i++) {
        threads[i] = new CalcThread(cdl, todo, toDisk);
        threads[i].start();
    }

    ToDiskThread toDiskThread = new ToDiskThread(
            AlaspatialProperties.getAnalysisWorkingDir() + LAYER_DISTANCE_FILE, toDisk);
    toDiskThread.start();

    cdl.await();

    for (int i = 0; i < threadcount; i++) {
        threads[i].interrupt();
    }

    toDiskThread.interrupt();
}

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