org.apache.commons.collections4.TransformerUtils Java Examples

The following examples show how to use org.apache.commons.collections4.TransformerUtils. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: MapUtilsUnitTest.java    From tutorials with MIT License 5 votes vote down vote up
@Test
public void whenCreateLazyMap_theMapIsCreated() {
    Map<Integer, String> intStrMap = MapUtils.lazyMap(new HashMap<Integer, String>(), TransformerUtils.stringValueTransformer());

    assertThat(intStrMap, is(anEmptyMap()));

    intStrMap.get(1);
    intStrMap.get(2);
    intStrMap.get(3);

    assertThat(intStrMap, is(aMapWithSize(3)));
}
 
Example #2
Source File: CollectIterableTest.java    From feilong-core with Apache License 2.0 5 votes vote down vote up
/**
 * Test collect.
 */
@Test
public void testCollect(){
    List<String> list = toList("xinge", "feilong1", "feilong2", "feilong2");

    Transformer<String, Object> nullTransformer = TransformerUtils.nullTransformer();
    List<Object> collect = CollectionsUtil.collect(list, nullTransformer);

    Object[] objects = { null, null, null, null };
    assertThat(collect, hasItems(objects));
}
 
Example #3
Source File: CollectIterableTest.java    From feilong-core with Apache License 2.0 5 votes vote down vote up
/**
 * Test collect 2.
 */
@Test
public void testCollect2(){
    List<User> list = toList(//
                    new User("张飞", 23),
                    new User("关羽", 24),
                    new User("刘备", 25));

    Transformer<User, String> invokerTransformer = TransformerUtils.invokerTransformer("getName");
    assertThat(CollectionsUtil.collect(list, invokerTransformer), hasItems("张飞", "关羽", "刘备"));
}
 
Example #4
Source File: CollectIterableTest.java    From feilong-core with Apache License 2.0 5 votes vote down vote up
/**
 * Test collect3.
 */
@Test
public void testCollect3(){
    List<User> list = toList(//
                    new User("张飞", 23),
                    new User("关羽", 24),
                    new User("刘备", 25));

    List<String> collect1 = CollectionsUtil.collect(list, TransformerUtils.constantTransformer("jintian"));
    assertThat(collect1, hasItems("jintian", "jintian", "jintian"));
}
 
Example #5
Source File: CollectIteratorTest.java    From feilong-core with Apache License 2.0 5 votes vote down vote up
/**
 * Test collect iterator.
 */
@Test
public void testCollectIterator(){
    List<String> list = toList("xinge", "feilong1", "feilong2", "feilong2");

    Transformer<String, Object> nullTransformer = TransformerUtils.nullTransformer();
    List<Object> collect = CollectionsUtil.collect(list.iterator(), nullTransformer);

    Object[] objects = { null, null, null, null };
    assertThat(collect, hasItems(objects));
}
 
Example #6
Source File: GroupWithTransformerAndPredicateTest.java    From feilong-core with Apache License 2.0 5 votes vote down vote up
/**
 * Test group not predicate.
 */
@Test
public void testGroupNotPredicate(){
    List<User> list = toList(new User("张飞", 10), new User("刘备", 10));
    Predicate<User> comparatorPredicate = BeanPredicateUtil.comparatorPredicate("age", 20, Criterion.EQUAL);
    assertEquals(emptyMap(), CollectionsUtil.group(list, comparatorPredicate, TransformerUtils.<User, Integer> constantTransformer(5)));
}
 
Example #7
Source File: GroupWithTransformerAndPredicateTest.java    From feilong-core with Apache License 2.0 5 votes vote down vote up
/**
 * Test group null predicate.
 */
@Test
public void testGroupNullPredicate(){
    User zhangfei28 = new User("张飞", 28);
    User liubei32 = new User("刘备", 32);
    User liubei30 = new User("刘备", 30);
    List<User> list = toList(zhangfei28, liubei32, liubei30);

    Map<Integer, List<User>> map = CollectionsUtil.group(list, null, TransformerUtils.<User, Integer> constantTransformer(5));

    assertEquals(1, map.size());
    assertThat(map, allOf(hasEntry(5, toList(zhangfei28, liubei32, liubei30))));
}
 
Example #8
Source File: GroupWithTransformerAndPredicateTest.java    From feilong-core with Apache License 2.0 5 votes vote down vote up
/**
 * Test group null collection.
 */
@Test
public void testGroupNullCollection(){
    assertEquals(
                    emptyMap(),
                    group(
                                    null,
                                    BeanPredicateUtil.comparatorPredicate("age", 20, Criterion.LESS),
                                    TransformerUtils.constantTransformer(5)));
}
 
Example #9
Source File: GroupWithTransformerAndPredicateTest.java    From feilong-core with Apache License 2.0 5 votes vote down vote up
/**
 * Test group empty collection.
 */
@Test
public void testGroupEmptyCollection(){
    assertEquals(
                    emptyMap(),
                    group(
                                    new ArrayList<>(),
                                    BeanPredicateUtil.comparatorPredicate("age", 20, Criterion.LESS),
                                    TransformerUtils.constantTransformer(5)));
}
 
Example #10
Source File: CollectIteratorTest.java    From feilong-core with Apache License 2.0 4 votes vote down vote up
/**
 * Test collect null iterator.
 */
@Test
public void testCollectNullIterator(){
    assertEquals(null, CollectionsUtil.collect((Iterator<Long>) null, TransformerUtils.stringValueTransformer()));
}
 
Example #11
Source File: GroupWithTransformerTest.java    From feilong-core with Apache License 2.0 4 votes vote down vote up
/**
 * Test group empty collection.
 */
@Test
public void testGroupEmptyCollection(){
    assertEquals(emptyMap(), group(new ArrayList<>(), TransformerUtils.constantTransformer(5)));
}
 
Example #12
Source File: GroupWithTransformerTest.java    From feilong-core with Apache License 2.0 4 votes vote down vote up
/**
 * Test group null collection.
 */
@Test
public void testGroupNullCollection(){
    assertEquals(emptyMap(), group(null, TransformerUtils.constantTransformer(5)));
}
 
Example #13
Source File: CollectIteratorTest.java    From feilong-core with Apache License 2.0 4 votes vote down vote up
/**
 * Test collect empty iterator.
 */
@Test
public void testCollectEmptyIterator(){
    assertEquals(emptyList(), CollectionsUtil.collect((new ArrayList<Long>()).iterator(), TransformerUtils.stringValueTransformer()));
}
 
Example #14
Source File: LayoutPositions.java    From ghidra with Apache License 2.0 4 votes vote down vote up
private void setVertexLocations(Map<V, Point2D> newVertexLocations) {
	this.vertexLocations = TransformedMap.transformedMap(newVertexLocations,
		TransformerUtils.nopTransformer(), TransformerUtils.cloneTransformer());
}
 
Example #15
Source File: CollectIterableTest.java    From feilong-core with Apache License 2.0 4 votes vote down vote up
/**
 * Test collect empty iterable.
 */
@Test
public void testCollectEmptyIterable(){
    assertEquals(emptyList(), CollectionsUtil.collect(new ArrayList<Long>(), TransformerUtils.stringValueTransformer()));
}
 
Example #16
Source File: CollectIterableTest.java    From feilong-core with Apache License 2.0 4 votes vote down vote up
/**
 * Test collect null iterable.
 */
@Test
public void testCollectNullIterable(){
    assertEquals(null, CollectionsUtil.collect((List<Long>) null, TransformerUtils.stringValueTransformer()));
}
 
Example #17
Source File: LayoutPositions.java    From ghidra with Apache License 2.0 4 votes vote down vote up
private void setEdgeArticulations(Map<E, List<Point2D>> newEdgeArticulations) {
	this.edgeArticulations = TransformedMap.transformedMap(newEdgeArticulations,
		TransformerUtils.nopTransformer(), TransformerUtils.cloneTransformer());
}