Example usage for java.util HashSet removeAll

Introduction

In this page you can find the example usage for java.util HashSet removeAll.

Prototype

boolean removeAll(Collection<?> c);

Source Link

Document

Removes from this set all of its elements that are contained in the specified collection (optional operation).

Usage

From source file:Main.java

public static void main(String[] a) {
    String elements[] = { "A", "B", "C", "D", "E" };
    HashSet<String> set = new HashSet<String>(Arrays.asList(elements));

    elements = new String[] { "B", "D", "F", "G", "1", "2", "3", "4" };
    HashSet<String> set2 = new HashSet<String>(Arrays.asList(elements));

    set.removeAll(set2);
    System.out.println(set);//  www.jav  a2 s.  c  o  m
}

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From source file:Main.java

/**
 * Gets the changes made to the a list of items
 * /*from  w  w w  .j a  va 2 s .com*/
 * @return HashMap the a list of items removed from the original list and a
 *         list of items added to the original list
 * */
public static <T> HashMap<String, HashSet<T>> getChangesToList(List<T> original, List<T> edited) {
    HashMap<String, HashSet<T>> changeSet = new HashMap<String, HashSet<T>>();
    HashSet<T> removed = new HashSet<T>(original);
    HashSet<T> added = new HashSet<T>(edited);
    removed.removeAll(edited);
    added.removeAll(original);

    changeSet.put(REMOVED_TAG, removed);
    changeSet.put(ADDED_TAG, added);

    return changeSet;
}

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From source file:Main.java

/**
 * Returns the set-theoretic difference between the first and the additional
 * collections, i.e. a set containing all elements that occur in the first,
 * but not in any of the other collections. We use a {@link HashSet}, so the
 * elements should support hashing.//from   www.j av a  2s  .c o  m
 */
@SafeVarargs
public static <T> HashSet<T> differenceSet(Collection<T> collection1, Collection<T>... furtherCollections) {
    HashSet<T> result = new HashSet<T>(collection1);
    for (Collection<T> collection : furtherCollections) {
        if (collection instanceof Set) {
            result.removeAll(collection);
        } else {
            // if the collection is not already a set, it will be
            // significantly faster to first build a set, to speed up the
            // containment query in the following call.
            result.removeAll(new HashSet<T>(collection));
        }
    }
    return result;
}

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From source file:org.apache.kylin.cube.CubeCapabilityChecker.java

private static Set<TblColRef> unmatchedDimensions(Collection<TblColRef> dimensionColumns, CubeInstance cube) {
    HashSet<TblColRef> result = Sets.newHashSet(dimensionColumns);
    CubeDesc cubeDesc = cube.getDescriptor();
    result.removeAll(cubeDesc.listDimensionColumnsIncludingDerived());
    return result;
}

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From source file:org.apache.kylin.cube.CubeCapabilityChecker.java

private static Set<FunctionDesc> unmatchedAggregations(Collection<FunctionDesc> aggregations,
        CubeInstance cube) {/*  w  ww  .  j  ava 2  s . co m*/
    HashSet<FunctionDesc> result = Sets.newHashSet(aggregations);
    CubeDesc cubeDesc = cube.getDescriptor();
    result.removeAll(cubeDesc.listAllFunctions());
    return result;
}

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From source file:edu.tum.cs.conqat.quamoco.qiesl.QIESLEngine.java

/** Computes the set difference */
public static <T> Set<T> difference(Set<T> set1, Set<T> set2) {
    HashSet<T> result = new HashSet<T>(set1);
    result.removeAll(set2);
    return result;
}

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From source file:pt.ist.maidSyncher.domain.MaidRoot.java

@SuppressWarnings("unused")
@Atomic(mode = TxMode.WRITE)/*from  w w  w . j  a v  a 2s  .  co m*/
private static void registerPropertyDescriptorNotConsideredWarning(
        Collection<String> changedPropertyDescriptors, Collection<String> propertyDescriptorsTicked,
        SyncEvent syncEvent) {
    StringBuilder exceptionMessageBuilder = new StringBuilder();
    exceptionMessageBuilder
            .append("One didn't consider a property descriptor change. Property descriptors not ticked: ");
    HashSet<String> copyOfChangedDescriptors = new HashSet<>(changedPropertyDescriptors);
    copyOfChangedDescriptors.removeAll(propertyDescriptorsTicked);
    for (String propertyDescriptor : copyOfChangedDescriptors) {
        exceptionMessageBuilder.append(propertyDescriptor + " ");
    }
    if (syncEvent != null && syncEvent.getOriginObject() != null) {
        exceptionMessageBuilder
                .append("Class of origin object: " + syncEvent.getOriginObject().getClass().getName());

    } else {
        exceptionMessageBuilder.append("Class of Origin object unknown because syncEvent is null.");
    }

    new SyncWarningLog(MaidRoot.getInstance().getCurrentSyncLog(), exceptionMessageBuilder.toString());

}

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From source file:org.apache.sling.distribution.packaging.impl.DistributionPackageUtils.java

public static boolean release(File file, @Nonnull String[] holderNames) throws IOException {
    if (holderNames.length == 0) {
        throw new IllegalArgumentException("holder name cannot be null or empty");
    }/*from  w  w w.  j a v  a  2s  .  co m*/

    synchronized (filelock) {
        try {

            HashSet<String> set = new HashSet<String>();

            if (file.exists()) {
                ObjectInputStream inputStream = getSafeObjectInputStream(new FileInputStream(file));
                set = (HashSet<String>) inputStream.readObject();
                IOUtils.closeQuietly(inputStream);
            }

            set.removeAll(Arrays.asList(holderNames));

            if (set.isEmpty()) {
                FileUtils.deleteQuietly(file);
                return true;
            }

            ObjectOutputStream outputStream = new ObjectOutputStream(new FileOutputStream(file));
            outputStream.writeObject(set);
            IOUtils.closeQuietly(outputStream);
        } catch (ClassNotFoundException e) {
            log.error("Cannot release file", e);
        }
    }
    return false;
}

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From source file:pku.sei.checkedcoverage.slicing.Slicer.java

/**
 * get unchecked map, based on covered map and checked map.
 * @return//from  ww w  . ja va  2 s.  c om
 */
public static HashMap<String, HashSet<Instruction>> getUncheckedMap() {
    HashMap<String, HashSet<Instruction>> uncheckedMap = new HashMap<String, HashSet<Instruction>>();
    HashMap<String, HashSet<Instruction>> covered = TraceResult.getCoveredInsts();
    HashMap<String, HashSet<Instruction>> checked = getCheckedLines();
    Iterator<String> keys = covered.keySet().iterator();
    while (keys.hasNext()) {
        String key = keys.next();
        HashSet<Instruction> unchecked = new HashSet<Instruction>(covered.get(key));
        unchecked.removeAll(checked.get(key));
        uncheckedMap.put(key, unchecked);
    }
    return uncheckedMap;
}

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From source file:org.apache.accumulo.server.init.Initialize.java

private static void addVolumes(VolumeManager fs) throws IOException {

    String[] volumeURIs = VolumeConfiguration.getVolumeUris(SiteConfiguration.getInstance());

    HashSet<String> initializedDirs = new HashSet<String>();
    initializedDirs.addAll(Arrays.asList(ServerConstants.checkBaseUris(volumeURIs, true)));

    HashSet<String> uinitializedDirs = new HashSet<String>();
    uinitializedDirs.addAll(Arrays.asList(volumeURIs));
    uinitializedDirs.removeAll(initializedDirs);

    Path aBasePath = new Path(initializedDirs.iterator().next());
    Path iidPath = new Path(aBasePath, ServerConstants.INSTANCE_ID_DIR);
    Path versionPath = new Path(aBasePath, ServerConstants.VERSION_DIR);

    UUID uuid = UUID.fromString(ZooUtil.getInstanceIDFromHdfs(iidPath, SiteConfiguration.getInstance()));
    for (Pair<Path, Path> replacementVolume : ServerConstants.getVolumeReplacements()) {
        if (aBasePath.equals(replacementVolume.getFirst()))
            log.error(aBasePath + " is set to be replaced in " + Property.INSTANCE_VOLUMES_REPLACEMENTS
                    + " and should not appear in " + Property.INSTANCE_VOLUMES
                    + ". It is highly recommended that this property be removed as data could still be written to this volume.");
    }//from   ww w  .  j  a  v  a  2 s.c  om

    if (ServerConstants.DATA_VERSION != Accumulo.getAccumuloPersistentVersion(
            versionPath.getFileSystem(CachedConfiguration.getInstance()), versionPath)) {
        throw new IOException("Accumulo " + Constants.VERSION + " cannot initialize data version "
                + Accumulo.getAccumuloPersistentVersion(fs));
    }

    initDirs(fs, uuid, uinitializedDirs.toArray(new String[uinitializedDirs.size()]), true);
}

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