Example usage for java.util IdentityHashMap size

Introduction

In this page you can find the example usage for java.util IdentityHashMap size.

Prototype

int size

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Document

The number of key-value mappings contained in this identity hash map.

Usage

From source file:Main.java

public static void main(String args[]) {

    IdentityHashMap<Integer, String> ihmap = new IdentityHashMap<Integer, String>();

    ihmap.put(1, "from");
    ihmap.put(2, "java2s.com");
    ihmap.put(3, "tutorial");

    System.out.println("Value of ihmap before: " + ihmap);
    System.out.println("Size of the map: " + ihmap.size());
}

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From source file:com.google.gwt.dev.util.collect.IdentityHashSetTest.java

@SuppressWarnings("unchecked")
@Override// w w  w .  ja  va2  s  .c  o m
public Collection makeConfirmedCollection() {
    final java.util.IdentityHashMap map = new java.util.IdentityHashMap();
    return new AbstractSet() {
        @Override
        public boolean add(Object e) {
            return map.put(e, e) == null;
        }

        @Override
        public Iterator iterator() {
            return map.keySet().iterator();
        }

        @Override
        public int size() {
            return map.size();
        }
    };
}

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From source file:ca.uhn.fhir.jpa.term.BaseHapiTerminologySvc.java

private void persistChildren(TermConcept theConcept, TermCodeSystemVersion theCodeSystem,
        IdentityHashMap<TermConcept, Object> theConceptsStack, int theTotalConcepts) {
    if (theConceptsStack.put(theConcept, PLACEHOLDER_OBJECT) != null) {
        return;/*from w  ww.j a va2  s .c  o  m*/
    }

    if (theConceptsStack.size() == 1 || theConceptsStack.size() % 10000 == 0) {
        float pct = (float) theConceptsStack.size() / (float) theTotalConcepts;
        ourLog.info("Have processed {}/{} concepts ({}%)", theConceptsStack.size(), theTotalConcepts,
                (int) (pct * 100.0f));
    }

    theConcept.setCodeSystem(theCodeSystem);
    theConcept.setIndexStatus(BaseHapiFhirDao.INDEX_STATUS_INDEXED);

    if (theConceptsStack.size() <= myDaoConfig.getDeferIndexingForCodesystemsOfSize()) {
        saveConcept(theConcept);
    } else {
        myConceptsToSaveLater.add(theConcept);
    }

    for (TermConceptParentChildLink next : theConcept.getChildren()) {
        persistChildren(next.getChild(), theCodeSystem, theConceptsStack, theTotalConcepts);
    }

    for (TermConceptParentChildLink next : theConcept.getChildren()) {
        if (theConceptsStack.size() <= myDaoConfig.getDeferIndexingForCodesystemsOfSize()) {
            saveConceptLink(next);
        } else {
            myConceptLinksToSaveLater.add(next);
        }
    }

}

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From source file:com.google.gwt.emultest.java.util.IdentityHashMapTest.java

public void testAddEqualKeys() {
    final IdentityHashMap expected = new IdentityHashMap();
    assertEquals(expected.size(), 0);
    iterateThrough(expected);// ww  w. j a  v  a2  s  .co m
    expected.put(new Long(45), new Object());
    assertEquals(expected.size(), 1);
    iterateThrough(expected);
    expected.put(new Integer(45), new Object());
    assertNotSame(new Integer(45), new Long(45));
    assertEquals(expected.size(), 2);
    iterateThrough(expected);
}

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From source file:com.google.gwt.emultest.java.util.IdentityHashMapTest.java

private Iterator iterateThrough(final IdentityHashMap expected) {
    Iterator iter = expected.entrySet().iterator();
    for (int i = 0; i < expected.size(); i++) {
        iter.next();//from  w w w  . j  av  a2 s. c  om
    }
    return iter;
}

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From source file:com.google.gwt.emultest.java.util.IdentityHashMapTest.java

public void testClone() {
    IdentityHashMap srcMap = new IdentityHashMap();
    checkEmptyHashMapAssumptions(srcMap);

    // Check empty clone behavior
    IdentityHashMap dstMap = (IdentityHashMap) srcMap.clone();
    assertNotNull(dstMap);/*www.jav  a 2  s.c  o m*/
    assertEquals(dstMap.size(), srcMap.size());
    // assertTrue(dstMap.values().toArray().equals(srcMap.values().toArray()));
    assertTrue(dstMap.keySet().equals(srcMap.keySet()));
    assertTrue(dstMap.entrySet().equals(srcMap.entrySet()));

    // Check non-empty clone behavior
    srcMap.put(KEY_1, VALUE_1);
    srcMap.put(KEY_2, VALUE_2);
    srcMap.put(KEY_3, VALUE_3);
    dstMap = (IdentityHashMap) srcMap.clone();
    assertNotNull(dstMap);
    assertEquals(dstMap.size(), srcMap.size());

    assertTrue(dstMap.keySet().equals(srcMap.keySet()));

    assertTrue(dstMap.entrySet().equals(srcMap.entrySet()));
}

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From source file:com.google.gwt.emultest.java.util.IdentityHashMapTest.java

public void testHashMapMap() {
    IdentityHashMap srcMap = new IdentityHashMap();
    assertNotNull(srcMap);/*from  w w w . j a va2s  .  com*/
    checkEmptyHashMapAssumptions(srcMap);

    srcMap.put(INTEGER_1, INTEGER_11);
    srcMap.put(INTEGER_2, INTEGER_22);
    srcMap.put(INTEGER_3, INTEGER_33);

    IdentityHashMap hashMap = new IdentityHashMap(srcMap);
    assertFalse(hashMap.isEmpty());
    assertTrue(hashMap.size() == SIZE_THREE);

    Collection valColl = hashMap.values();
    assertTrue(valColl.contains(INTEGER_11));
    assertTrue(valColl.contains(INTEGER_22));
    assertTrue(valColl.contains(INTEGER_33));

    Collection keyColl = hashMap.keySet();
    assertTrue(keyColl.contains(INTEGER_1));
    assertTrue(keyColl.contains(INTEGER_2));
    assertTrue(keyColl.contains(INTEGER_3));
}

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From source file:com.google.gwt.emultest.java.util.IdentityHashMapTest.java

/**
 * Test method for 'java.util.IdentityHashMap.size()'.
 *//*from w  w w .ja  v a2 s  . c  o  m*/
public void testSize() {
    IdentityHashMap hashMap = new IdentityHashMap();
    checkEmptyHashMapAssumptions(hashMap);

    // Test size behavior on put
    assertEquals(hashMap.size(), SIZE_ZERO);
    hashMap.put(KEY_1, VALUE_1);
    assertEquals(hashMap.size(), SIZE_ONE);
    hashMap.put(KEY_2, VALUE_2);
    assertEquals(hashMap.size(), SIZE_TWO);
    hashMap.put(KEY_3, VALUE_3);
    assertEquals(hashMap.size(), SIZE_THREE);

    // Test size behavior on remove
    hashMap.remove(KEY_1);
    assertEquals(hashMap.size(), SIZE_TWO);
    hashMap.remove(KEY_2);
    assertEquals(hashMap.size(), SIZE_ONE);
    hashMap.remove(KEY_3);
    assertEquals(hashMap.size(), SIZE_ZERO);

    // Test size behavior on putAll
    hashMap.put(KEY_1, VALUE_1);
    hashMap.put(KEY_2, VALUE_2);
    hashMap.put(KEY_3, VALUE_3);
    IdentityHashMap srcMap = new IdentityHashMap(hashMap);
    hashMap.putAll(srcMap);
    assertEquals(hashMap.size(), SIZE_THREE);

    // Test size behavior on clear
    hashMap.clear();
    assertEquals(hashMap.size(), SIZE_ZERO);
}

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From source file:com.google.gwt.emultest.java.util.IdentityHashMapTest.java

public void testClear() {
    IdentityHashMap hashMap = new IdentityHashMap();
    checkEmptyHashMapAssumptions(hashMap);

    hashMap.put("Hello", "Bye");
    assertFalse(hashMap.isEmpty());/*w  w w. ja v a2  s  .co m*/
    assertTrue(hashMap.size() == SIZE_ONE);

    hashMap.clear();
    assertTrue(hashMap.isEmpty());
    assertTrue(hashMap.size() == 0);
}

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From source file:com.google.gwt.emultest.java.util.IdentityHashMapTest.java

public void testIsEmpty() {
    IdentityHashMap srcMap = new IdentityHashMap();
    checkEmptyHashMapAssumptions(srcMap);

    IdentityHashMap dstMap = new IdentityHashMap();
    checkEmptyHashMapAssumptions(dstMap);

    dstMap.putAll(srcMap);//from  w  w  w. ja v  a 2 s. c o  m
    assertTrue(dstMap.isEmpty());

    dstMap.put(KEY_KEY, VALUE_VAL);
    assertFalse(dstMap.isEmpty());

    dstMap.remove(KEY_KEY);
    assertTrue(dstMap.isEmpty());
    assertEquals(dstMap.size(), 0);
}

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