Example usage for com.google.common.collect Collections2 filter

Introduction

In this page you can find the example usage for com.google.common.collect Collections2 filter.

Prototype



@CheckReturnValue
public static <E> Collection<E> filter(Collection<E> unfiltered, Predicate<? super E> predicate)

Source Link

Document

Returns the elements of unfiltered that satisfy a predicate.

Usage

From source file:org.openengsb.core.util.CollectionUtilsExtended.java

/**
 * provides a view to the given collection, that only contains objects that are instances of the given clazz. It
 * uses the guava-methods {@link Collections2#filter(Collection, Predicate)} and
 * {@link Collections2#transform(Collection, Function)}.
 *
 * The returned collection is immutable.
 *//*from w w  w .j  av a  2s .c o m*/
public static <TargetType> Collection<TargetType> filterCollectionByClass(Collection<?> source,
        final Class<TargetType> clazz) {
    Collection<?> filtered = Collections2.filter(source, new Predicate<Object>() {
        @Override
        public boolean apply(Object input) {
            return clazz.isInstance(input);
        }
    });
    return Collections2.transform(filtered, new Function<Object, TargetType>() {
        @SuppressWarnings("unchecked")
        @Override
        public TargetType apply(Object input) {
            return (TargetType) input;
        }
    });
}

From source file:pl.coffeepower.blog.examples.NumberUtils.java

public static Collection<? extends Number> getEvenNumbers(Collection<? extends Number> numbers) {
    return Collections2.filter(numbers, number -> isEvenNumber(number));
}

From source file:com.siemens.pl.it.rest.services.QuoteService.java

public Quote quote(final String quoteId, final String revision) {
    Collection<Quote> quotesFound = Collections2.filter(getAllQuotes(), new Predicate<Quote>() {
        @Override/*from   w w w  .j  a  va 2  s  .  c o m*/
        public boolean apply(Quote quote) {
            return quote.getQuoteId().equals(quoteId) && quote.getRevision().equals(revision);
        }
    });

    if (!quotesFound.isEmpty()) {
        return quotesFound.iterator().next();
    } else {
        // Use 400 if it is the user's fault, 500 if it is yours.
        throw new WebApplicationException(Response.status(Response.Status.NOT_FOUND)
                .entity("Quote id/rev not found").type(MediaType.APPLICATION_JSON_TYPE).build());
    }

}

From source file:com.stackframe.sarariman.DirectRateAudit.java

@Override
public Collection<AuditResult> getResults() {
    Collection<AuditResult> c = new ArrayList<>();
    Collection<Employee> activeEmployees = Collections2.filter(directory.getByUserName().values(),
            Utilities.active);// w  w  w. j av a2s .  c om
    for (Employee e : activeEmployees) {
        BigDecimal directRate = e.getDirectRate();
        if (directRate == null) {
            c.add(new AuditResult(AuditResultType.error,
                    String.format("%s (%d) has no current direct rate", e.getDisplayName(), e.getNumber()),
                    e.getURL()));
        }
    }

    return c;
}

From source file:org.pentaho.di.trans.dataservice.validation.ValidationUtil.java

public static Collection<ParameterGeneration> getParameterGenerationsForStep(
        final DataServiceMeta dataServiceMeta, final String stepName) {
    return Collections2.transform(Collections2.filter(dataServiceMeta.getPushDownOptimizationMeta(),
            new Predicate<PushDownOptimizationMeta>() {
                @Override/*from  w  ww.j a va 2 s .  c  om*/
                public boolean apply(PushDownOptimizationMeta pushDownOptimizationMeta) {
                    return pushDownOptimizationMeta.getType() instanceof ParameterGeneration
                            && stepName.equals(pushDownOptimizationMeta.getStepName());
                }
            }), new Function<PushDownOptimizationMeta, ParameterGeneration>() {
                @Override
                public ParameterGeneration apply(PushDownOptimizationMeta pushDownOptimizationMeta) {
                    return (ParameterGeneration) pushDownOptimizationMeta.getType();
                }
            });
}

From source file:com.madvay.tools.android.perf.common.TraceTransformers.java

public static TT keep(final Predicate<StackTraceElement> spec) {
    return new TT() {
        @Override//ww  w .  j  av a  2s  .  c o m
        public List<StackTraceElement> apply(List<StackTraceElement> input) {
            return Lists.newArrayList(Collections2.filter(input, spec));
        }
    };
}

From source file:com.android.tools.idea.editors.theme.ThemeEditorTestUtils.java

/**
 * Returns the attributes that were defined in the theme itself and not its parents.
 *//*from w ww.j  a  va  2 s.co m*/
public static Collection<EditedStyleItem> getStyleLocalValues(@NotNull final ConfiguredThemeEditorStyle style) {
    final Set<String> localAttributes = Sets.newHashSet();
    for (ConfiguredElement<ItemResourceValue> value : style.getConfiguredValues()) {
        localAttributes.add(ResolutionUtils.getQualifiedItemName(value.getElement()));
    }

    return Collections2.filter(
            ThemeAttributeResolver.resolveAll(style, style.getConfiguration().getConfigurationManager()),
            new Predicate<EditedStyleItem>() {
                @Override
                public boolean apply(@Nullable EditedStyleItem input) {
                    assert input != null;
                    return localAttributes.contains(input.getQualifiedName());
                }
            });
}

From source file:org.asoem.greyfish.utils.space.SpatialData.java

/**
 * Filter all elements out of the given collection that are in the range distance range of given origin. if origin
 * is an element of collection, it will be excluded in the result.
 *
 * @param collection      the collection to filter
 * @param origin          the origin//from   w  w  w  .j a  v  a2  s.co  m
 * @param range           the range
 * @param distanceMeasure the distance measure to use
 * @param <O>             the type of the objects
 * @return a live view of the given collection
 */
public static <O> Collection<O> filterNeighbors(final Collection<O> collection, final O origin,
        final double range, final DistanceMeasure<? super O> distanceMeasure) {
    return Collections2.filter(collection, new Predicate<O>() {
        @Override
        public boolean apply(@Nullable final O input) {
            checkNotNull(input);
            if (input == origin) {
                return false;
            }

            final double distance = distanceMeasure.apply(origin, input);
            checkState(distance >= 0, "the distance must be positive");

            return distance <= range;
        }
    });
}

From source file:org.zanata.ui.FilterUtil.java

/**
 * Return filtered list of HPerson from personList which are NOT in
 * allPersonList//from ww w .j a  v  a 2 s  .  co  m
 *
 * @param allPersonList
 * @param personList
 * @return
 */
public static List<HPerson> filterOutPersonList(final List<HPerson> allPersonList, List<HPerson> personList) {
    Collection<HPerson> filtered = Collections2.filter(personList, new Predicate<HPerson>() {
        @Override
        public boolean apply(HPerson input) {
            return !allPersonList.contains(input);
        }
    });

    return Lists.newArrayList(filtered);
}

From source file:vars.LinkUtilities.java

/**
 * Return all links in a collection that match a given {@link ILink}. This compares the linkName,
 * toConcept, and linkValue fields//from w ww.  j  av a2s .  com
 * 
 * @param links
 * @param templateLink
 * @return
 */
public static Collection<ILink> findMatchingLinksIn(Collection<ILink> links, final ILink templateLink) {
    return Collections2.filter(links, new Predicate<ILink>() {
        public boolean apply(ILink input) {
            return COMPARATOR.compare(input, templateLink) == 0;
        }
    });
}