Example usage for org.apache.commons.collections4 SetValuedMap get

Introduction

In this page you can find the example usage for org.apache.commons.collections4 SetValuedMap get.

Prototype

@Override
Set<V> get(K key);

Source Link

Document

Gets the set of values associated with the specified key.

Usage

From source file:com.github.alexfalappa.nbspringboot.navigator.MappedElement.java

private final String computeHandlerSignature(Element element) {
    StringBuilder sb = new StringBuilder(element.getSimpleName());
    if (element instanceof ExecutableElement) {
        // store arguments with same unqualified type name
        ExecutableElement eel = (ExecutableElement) element;
        SetValuedMap<String, String> mm = new HashSetValuedHashMap<>();
        for (VariableElement var : eel.getParameters()) {
            String fullType = var.asType().toString();
            mm.put(Utils.shortenJavaType(fullType), fullType);
        }/*from w ww. ja v a  2  s .co  m*/
        // build up argument list
        sb.append('(');
        for (int i = 0; i < eel.getParameters().size(); i++) {
            VariableElement var = eel.getParameters().get(i);
            String fullType = var.asType().toString();
            final String shortType = Utils.shortenJavaType(fullType);
            if (mm.get(shortType).size() > 1) {
                sb.append(fullType);
            } else {
                sb.append(shortType);
            }
            if (i < eel.getParameters().size() - 1) {
                sb.append(", ");
            }
        }
        sb.append(") : ");
        sb.append(Utils.shortenJavaType(eel.getReturnType().toString()));
    }
    return sb.toString();
}

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From source file:org.decampo.examples.collections.MoreCollectorsTest.java

@Test
public void toSetValuedMapTest() throws Exception {
    // Make a set valued map where the key is the first element in each 
    // array and the set contains all the elements of the array
    final SetValuedMap<String, String> result = Arrays.stream(DATA)
            // convert to arrays of length two
            .flatMap(arr -> Arrays.stream(arr).map(s -> new String[] { arr[0], s }))
            // Now collect the 2-element arrays into a map
            .collect(MoreCollectors.toSetValuedMap(arr -> arr[0], arr -> arr[1]));

    // Now we verify 
    Arrays.stream(DATA).forEach(arr -> {
        assertEquals(//from w  w  w. j  ava2s.  c o  m
                // a set containing the elements of the array
                new HashSet<>(Arrays.asList(arr)),
                // equals the set corresponding to the first element
                result.get(arr[0]));
    });
}

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From source file:org.decampo.examples.collections.MoreCollectorsTest.java

@Test
public void groupingByDistinctTest() throws Exception {
    final Num[] english = { new Num(0, "zero"), new Num(1, "one"), new Num(2, "two") };
    final Num[] espanol = { new Num(0, "cero"), new Num(1, "uno"), new Num(2, "dos") };
    final Num[] deutsche = { new Num(0, "null"), new Num(1, "eins"), new Num(2, "zwei") };

    final SetValuedMap<Integer, Num> result = Stream.of(english, espanol, deutsche, espanol, english)
            .flatMap(Arrays::stream).collect(MoreCollectors.groupingByDistinct(Num::getValue));

    assertEquals(new HashSet<>(Arrays.asList(0, 1, 2)), result.keySet());
    assertEquals(new HashSet<>(Arrays.asList(english[0], espanol[0], deutsche[0])), result.get(0));
    assertEquals(new HashSet<>(Arrays.asList(english[1], espanol[1], deutsche[1])), result.get(1));
    assertEquals(new HashSet<>(Arrays.asList(english[2], espanol[2], deutsche[2])), result.get(2));
}

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