Example usage for com.google.common.collect Iterables getOnlyElement

Introduction

In this page you can find the example usage for com.google.common.collect Iterables getOnlyElement.

Prototype

public static <T> T getOnlyElement(Iterable<T> iterable)

Source Link

Document

Returns the single element contained in iterable .

Usage

From source file:com.axemblr.provisionr.cloudstack.core.Zones.java

public static boolean hasSecurityGroupEnabled(final CloudStackClient cloudStackClient, final String zoneName) {
    Set<Zone> ourZone = Sets.filter(cloudStackClient.getZoneClient().listZones(), new Predicate<Zone>() {
        @Override//from  w  w w .ja  va  2s  . c  om
        public boolean apply(Zone input) {
            return input.getName().equals(zoneName);
        }
    });
    return Iterables.getOnlyElement(ourZone).isSecurityGroupsEnabled();
}

From source file:org.apache.beam.sdk.extensions.sql.utils.RowAsserts.java

/** Asserts result contains single row with an int field. */
public static SerializableFunction<Iterable<Row>, Void> matchesScalar(int expected) {
    return records -> {
        Row row = Iterables.getOnlyElement(records);
        assertNotNull(row);/*from  w  w  w .  ja v a2 s.  com*/
        assertEquals(expected, (int) row.getInt32(0));
        return null;
    };
}

From source file:org.apache.beam.sdk.values.TaggedPValue.java

public static TaggedPValue ofExpandedValue(PValue value) {
    return of(Iterables.getOnlyElement(value.expand().keySet()), value);
}

From source file:org.guicerecipes.support.CompositeCloser.java

/**
 * Returns a {@link Closer} for the given lists of closer strategies or returning null if the collection is empty
 *//*from   w  ww.  j  a  v a2s . co m*/
public static Closer newInstance(Collection<Closer> closers) {
    if (closers.isEmpty()) {
        return null;
    }
    if (closers.size() == 1) {
        return Iterables.getOnlyElement(closers);
    }
    return new CompositeCloser(closers);
}

From source file:com.teradata.benchto.service.model.AggregatedMeasurement.java

public static AggregatedMeasurement aggregate(MeasurementUnit unit, Collection<Double> values) {
    if (values.size() < 2) {
        Double value = Iterables.getOnlyElement(values);
        return new AggregatedMeasurement(unit, value, value, value, 0.0, 0.0);
    }/*from   w w  w.ja  va 2s.c om*/
    DescriptiveStatistics statistics = new DescriptiveStatistics(
            values.stream().mapToDouble(Double::doubleValue).toArray());

    double stdDevPercent = 0.0;
    if (statistics.getStandardDeviation() > 0.0) {
        stdDevPercent = (statistics.getStandardDeviation() / statistics.getMean()) * 100;
    }

    return new AggregatedMeasurement(unit, statistics.getMin(), statistics.getMax(), statistics.getMean(),
            statistics.getStandardDeviation(), stdDevPercent);
}

From source file:org.apache.provisionr.cloudstack.core.Zones.java

public static boolean hasSecurityGroupEnabled(final CloudStackClient cloudStackClient, final String zoneName) {
    Set<Zone> ourZone = Sets.filter(cloudStackClient.getZoneClient().listZones(), new Predicate<Zone>() {
        @Override/*  w w  w  .  ja  v  a 2  s .  c o m*/
        public boolean apply(Zone input) {
            return input != null && input.getName().equals(zoneName);
        }
    });
    return Iterables.getOnlyElement(ourZone).isSecurityGroupsEnabled();
}

From source file:sklearn.TypeUtil.java

static public DataType getDataType(List<?> objects, DataType defaultDataType) {
    Function<Object, Class<?>> function = new Function<Object, Class<?>>() {

        @Override/*from  ww  w. jav a 2 s  . c  o m*/
        public Class<?> apply(Object object) {
            return object.getClass();
        }
    };

    Set<Class<?>> clazzes = new HashSet<>(Lists.transform(objects, function));

    Class<?> clazz = Iterables.getOnlyElement(clazzes);

    DataType dataType = TypeUtil.dataTypes.get(clazz);
    if (dataType != null) {
        return dataType;
    }

    return defaultDataType;
}

From source file:com.opengamma.engine.marketdata.manipulator.NodeExtractor.java

protected static String getSingleProperty(final ValueSpecification spec, final String propertyName) {
    final ValueProperties properties = spec.getProperties();
    final Set<String> curves = properties.getValues(propertyName);
    return Iterables.getOnlyElement(curves);
}

From source file:org.sosy_lab.cpachecker.cpa.smg.refiner.SMGCEGARUtils.java

public static SMGPrecision extractSMGPrecision(final ARGReachedSet pReached, ARGState state) {
    FluentIterable<Precision> precisions = Precisions.asIterable(pReached.asReachedSet().getPrecision(state));

    precisions = precisions.filter((Precision prec) -> {
        return prec instanceof SMGPrecision;
    });//  w  w  w . j a  va  2s . c om

    return (SMGPrecision) Iterables.getOnlyElement(precisions);
}

From source file:org.eclipse.recommenders.rcp.utils.CompilerBindingsTestUtils.java

public static org.eclipse.jdt.internal.compiler.ast.ASTNode getCompilerAstNode(CharSequence code)
        throws Exception {
    JavaProjectFixture fixture = new JavaProjectFixture(ResourcesPlugin.getWorkspace(), "test");
    Pair<CompilationUnit, Set<Integer>> parseResult = fixture.parseWithMarkers(code.toString());
    CompilationUnit cu = parseResult.getFirst();
    int start = Iterables.getOnlyElement(parseResult.getSecond());

    AST ast = cu.getAST();/* w  ww . j  ava2 s . com*/
    ASTNode node = NodeFinder.perform(cu, start, 0);
    return getCorrespondingNode(ast, node);
}