Example usage for org.apache.commons.functor UnaryFunction UnaryFunction

Introduction

In this page you can find the example usage for org.apache.commons.functor UnaryFunction UnaryFunction.

Prototype

UnaryFunction

Source Link

Usage

From source file:com.aw.support.collection.ListUtils.java

public static java.util.Map<Object, Object> toMap(Collection<Object[]> list, final int propertyKeyIdx,
        final int propertyValueIdx) {
    final HashMap<Object, Object> map = new HashMap();
    UnaryFunction unaryFunction = new UnaryFunction() {
        public Object evaluate(Object o) {
            Object[] row = (Object[]) o;

            Object key = row[propertyKeyIdx];
            Object value = propertyValueIdx < 0 ? row : row[propertyValueIdx];
            map.put(key, value);//from w ww  .  j a  v a 2s  .co m
            return null;
        }
    };
    apply(list, null, unaryFunction);
    return map;
}

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From source file:com.aw.support.collection.ListUtils.java

public static <E> List<E> columnFindList(Collection<E> list, final String[] propertyNames,
        final Object[] propertyValues) {
    final List result = new ArrayList();
    apply(list, null, new UnaryFunction() {

        @Override//w w  w .  j  a  v  a  2  s . co  m
        public Object evaluate(Object o) {
            BeanWrapper wrapper = new BeanWrapperImpl(o);
            for (int i = 0; i < propertyNames.length; i++) {
                String propName = propertyNames[i];
                Object propVal = wrapper.getPropertyValue(propName);
                if (!BeanUtils.equals(propVal, propertyValues[i]))
                    return null;
            }
            result.add(o);
            return null;
        }
    });
    return result;
}

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From source file:org.mili.core.cache.DefaultCacheTest.java

@Test
public void testCreate_Collection() {
    class Foo {/* ww w  .  ja  v  a 2  s .c o  m*/
        String s;
        int i;

        Foo(String s, int i) {
            this.s = s;
            this.i = i;
        }
    }
    List<Foo> l = new ArrayList<Foo>();
    l.add(new Foo("a", 1));
    l.add(new Foo("b", 2));
    l.add(new Foo("c", 3));
    Cache<String, Foo> c = DefaultCache.create(l, new UnaryFunction<Foo, String>() {
        @Override
        public String evaluate(Foo f) {
            return f.s;
        }
    });
    assertEquals(1, c.get("a").i);
    assertEquals(2, c.get("b").i);
    assertEquals(3, c.get("c").i);
}

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From source file:org.mili.core.collection.MapUtilTest.java

@Test(expected = IllegalStateException.class)
public void shouldFailBecauseTransformationFunctionThrowsException() {
    UnaryFunction<FooId, Integer> f = new UnaryFunction<FooId, Integer>() {
        @Override/* ww w.  jav a2s  .  c o  m*/
        public Integer evaluate(FooId o) {
            throw new IllegalStateException("fails");
        }
    };
    List<FooId> l = new ArrayList<FooId>();
    FooId fi0 = new FooId(4711, "lala");
    l.add(fi0);
    MapUtil.listAsMap(l, f);
}

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From source file:org.mili.core.collection.MapUtilTest.java

@Test
public void testListAsMap_List_Function() {
    UnaryFunction<FooId, Integer> f = new UnaryFunction<FooId, Integer>() {
        @Override/*w w w  . jav  a2s.com*/
        public Integer evaluate(FooId o) {
            return o.id;
        }
    };
    // negativ
    try {
        MapUtil.listAsMap(null, null);
        fail("exception expected!");
    } catch (IllegalArgumentException e) {
    }
    try {
        MapUtil.listAsMap(null, f);
        fail("exception expected!");
    } catch (IllegalArgumentException e) {
    }
    try {
        MapUtil.listAsMap(new ArrayList<Object>(), null);
        fail("exception expected!");
    } catch (IllegalArgumentException e) {
    }
    // positiv
    List<FooId> l = new ArrayList<FooId>();
    FooId fi0 = new FooId(4711, "lala");
    FooId fi1 = new FooId(4712, "tinki");
    FooId fi2 = new FooId(4713, "tele");
    FooId fi3 = new FooId(4714, "abbas");
    l.add(fi0);
    l.add(fi1);
    l.add(fi2);
    l.add(fi3);
    Map<Integer, FooId> m = MapUtil.listAsMap(l, f);
    assertEquals(4, m.size());
    assertEquals(m.get(4711), fi0);
    assertEquals(m.get(4712), fi1);
    assertEquals(m.get(4713), fi2);
    assertEquals(m.get(4714), fi3);
    // positiv, double adding
    l.add(fi0);
    l.add(fi1);
    l.add(fi2);
    l.add(fi3);
    m = MapUtil.listAsMap(l, f);
    assertEquals(4, m.size());
    assertEquals(m.get(4711), fi0);
    assertEquals(m.get(4712), fi1);
    assertEquals(m.get(4713), fi2);
    assertEquals(m.get(4714), fi3);
    // multiple check
    try {
        m = MapUtil.listAsMap(false, l, f);
        fail("exception expected!");
    } catch (ArrayStoreException e) {
    }
}

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From source file:org.mili.core.io.DirectoryCleanerTest.java

@Test
public void shouldChecksBeforeDelete() {
    final List<File> list = new ArrayList<File>();
    cleaner = DirectoryCleaner.create(new UnaryFunction<File, Boolean>() {
        @Override/*  w ww .  jav a2  s  . co m*/
        public Boolean evaluate(File file) {
            list.add(file);
            return true;
        }
    });
    cleaner.delete(file_01);
    assertFalse(file_01.exists());
    assertEquals(1, list.size());
    assertEquals(file_01, list.get(0));
}

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