Examples of edu.umd.cloud9.io.map.HMapIFW

edu.umd.cloud9.io.map.HMapIFW

Writable representing a map where keys are ints and values are floats.

One notable feature of this class is the ability to support lazy decoding, controlled by the {@link #setLazyDecodeFlag(boolean)} method. In lazydecoding mode, when an object of this type is deserialized, key-value pairs are not inserted into the map, but rather held in arrays. The reduces memory used in cases where random access to values is not required. In lazy decoding mode, the raw keys and values may be fetched by the {@link #getKeys()} and{@link #getValues()} methods, respectively. The map can be subsequentlypopulated with the {@link #decode()} method.
@author Jimmy Lin

    // make sure this does nothing
    m1.decode();


    assertTrue(m1.size() == 0);


    HMapIFW m2 = HMapIFW.create(m1.serialize());


    assertTrue(m2.size() == 0);
  }

View Full Code Here


public class HMapIFWTest {


  @Test
  public void testBasic() throws IOException {
    HMapIFW m = new HMapIFW();


    m.put(2, 5.0f);
    m.put(1, 22.0f);


    float value;


    assertEquals(m.size(), 2);


    value = m.get(2);
    assertTrue(value == 5.0f);


    value = m.remove(2);
    assertEquals(m.size(), 1);


    value = m.get(1);
    assertTrue(value == 22.0f);
  }

View Full Code Here

  }


  @Test
  public void testSerialize1() throws IOException {
    HMapIFW.setLazyDecodeFlag(false);
    HMapIFW m1 = new HMapIFW();


    m1.put(3, 5.0f);
    m1.put(4, 22.0f);


    byte[] bytes = m1.serialize();
    HMapIFW n2 = HMapIFW.create(bytes);


    float value;


    assertEquals(n2.size(), 2);


    value = n2.get(3);
    assertTrue(value == 5.0f);


    value = n2.remove(3);
    assertEquals(n2.size(), 1);


    value = n2.get(4);
    assertTrue(value == 22.0f);
  }

View Full Code Here

  }


  @Test
  public void testSerializeLazy1() throws IOException {
    HMapIFW.setLazyDecodeFlag(true);
    HMapIFW m1 = new HMapIFW();


    m1.put(3, 5.0f);
    m1.put(4, 22.0f);


    byte[] bytes = m1.serialize();
    HMapIFW m2 = HMapIFW.create(bytes);


    assertFalse(m2.isDecoded());
    assertEquals(2, m2.size());


    int[] keys = m2.getKeys();
    float[] values = m2.getValues();


    assertTrue(keys[0] == 3);
    assertTrue(keys[1] == 4);


    assertTrue(values[0] == 5.0f);
    assertTrue(values[1] == 22.0f);


    m2.decode();
    assertTrue(m2.isDecoded());
    
    float value;
    assertEquals(m2.size(), 2);


    value = m2.get(3);
    assertTrue(value == 5.0f);


    value = m2.remove(3);
    assertEquals(1, m2.size());


    value = m2.get(4);
    assertTrue(value == 22.0f);
  }

View Full Code Here

  }


  @Test
  public void testSerializeLazy2() throws IOException {
    HMapIFW.setLazyDecodeFlag(true);
    HMapIFW m1 = new HMapIFW();


    m1.put(3, 5.0f);
    m1.put(4, 22.0f);


    byte[] bytes = m1.serialize();
    HMapIFW m2 = HMapIFW.create(bytes);


    assertFalse(m2.isDecoded());
    assertEquals(2, m2.size());


    int[] keys = m2.getKeys();
    float[] values = m2.getValues();


    assertTrue(keys[0] == 3);
    assertTrue(keys[1] == 4);


    assertTrue(values[0] == 5.0f);
    assertTrue(values[1] == 22.0f);


    m2.decode();
    float value;
    assertEquals(m2.size(), 2);


    value = m2.get(3);
    assertTrue(value == 5.0f);


    value = m2.remove(3);
    assertEquals(m2.size(), 1);


    value = m2.get(4);
    assertTrue(value == 22.0f);
  }

View Full Code Here


  @Test
  public void testLazyPlus1() throws IOException {
    HMapIFW.setLazyDecodeFlag(true);
    
    HMapIFW m1 = new HMapIFW();
    m1.put(3, 5.0f);
    m1.put(4, 22.0f);


    byte[] bytes1 = m1.serialize();
    
    HMapIFW m2 = new HMapIFW();
    m2.put(3, 1.0f);
    m2.put(4, 1.0f);
    m2.put(5, 1.0f);


    byte[] bytes2 = m2.serialize();


    HMapIFW n1 = HMapIFW.create(bytes1);
    HMapIFW n2 = HMapIFW.create(bytes2);


    assertFalse(n1.isDecoded());
    assertEquals(2, n1.size());


    assertFalse(n2.isDecoded());
    assertEquals(3, n2.size());


    // n1 isn't decoded, n2 isn't decoded
    n1.plus(n2);


    assertTrue(n1.size() == 3);
    assertTrue(n1.get(3) == 6.0f);
    assertTrue(n1.get(4) == 23.0f);
    assertTrue(n1.get(5) == 1.0f);
    assertTrue(n1.isDecoded());
    assertFalse(n2.isDecoded());
  }

View Full Code Here

  
  @Test
  public void testLazyPlus2() throws IOException {
    HMapIFW.setLazyDecodeFlag(true);
    
    HMapIFW m1 = new HMapIFW();
    m1.put(3, 5.0f);
    m1.put(4, 22.0f);


    byte[] bytes1 = m1.serialize();
    
    HMapIFW m2 = new HMapIFW();
    m2.put(3, 1.0f);
    m2.put(4, 1.0f);
    m2.put(5, 1.0f);


    byte[] bytes2 = m2.serialize();


    HMapIFW n1 = HMapIFW.create(bytes1);
    HMapIFW n2 = HMapIFW.create(bytes2);


    assertFalse(n1.isDecoded());
    assertEquals(2, n1.size());


    assertFalse(n2.isDecoded());
    assertEquals(3, n2.size());


    // n1 isn't decoded, n2 is
    n2.decode();
    n1.plus(n2);


    assertTrue(n1.size() == 3);
    assertTrue(n1.get(3) == 6.0f);
    assertTrue(n1.get(4) == 23.0f);
    assertTrue(n1.get(5) == 1.0f);
    assertTrue(n1.isDecoded());
    assertTrue(n2.isDecoded());
  }

View Full Code Here

  
  @Test
  public void testLazyPlus3() throws IOException {
    HMapIFW.setLazyDecodeFlag(true);
    
    HMapIFW m1 = new HMapIFW();
    m1.put(3, 5.0f);
    m1.put(4, 22.0f);


    byte[] bytes1 = m1.serialize();
    
    HMapIFW m2 = new HMapIFW();
    m2.put(3, 1.0f);
    m2.put(4, 1.0f);
    m2.put(5, 1.0f);


    byte[] bytes2 = m2.serialize();


    HMapIFW n1 = HMapIFW.create(bytes1);
    HMapIFW n2 = HMapIFW.create(bytes2);


    assertFalse(n1.isDecoded());
    assertEquals(2, n1.size());


    assertFalse(n2.isDecoded());
    assertEquals(3, n2.size());


    // n2 isn't decoded, n1 is
    n1.decode();
    n1.plus(n2);


    assertTrue(n1.size() == 3);
    assertTrue(n1.get(3) == 6.0f);
    assertTrue(n1.get(4) == 23.0f);
    assertTrue(n1.get(5) == 1.0f);
    assertTrue(n1.isDecoded());
    assertFalse(n2.isDecoded());
  }

View Full Code Here

  
  @Test
  public void testLazyPlus4() throws IOException {
    HMapIFW.setLazyDecodeFlag(true);
    
    HMapIFW m1 = new HMapIFW();
    m1.put(3, 5.0f);
    m1.put(4, 22.0f);


    byte[] bytes1 = m1.serialize();
    
    HMapIFW m2 = new HMapIFW();
    m2.put(3, 1.0f);
    m2.put(4, 1.0f);
    m2.put(5, 1.0f);


    byte[] bytes2 = m2.serialize();


    HMapIFW n1 = HMapIFW.create(bytes1);
    HMapIFW n2 = HMapIFW.create(bytes2);


    assertFalse(n1.isDecoded());
    assertEquals(2, n1.size());


    assertFalse(n2.isDecoded());
    assertEquals(3, n2.size());


    // both n1 and n2 are decoded
    n1.decode();
    n2.decode();
    n1.plus(n2);


    assertTrue(n1.size() == 3);
    assertTrue(n1.get(3) == 6.0f);
    assertTrue(n1.get(4) == 23.0f);
    assertTrue(n1.get(5) == 1.0f);
    assertTrue(n1.isDecoded());
    assertTrue(n2.isDecoded());
  }

View Full Code Here

    assertTrue(n2.isDecoded());
  }
  
  @Test
  public void testSerializeEmpty() throws IOException {
    HMapIFW m1 = new HMapIFW();


    // make sure this does nothing
    m1.decode();


    assertTrue(m1.size() == 0);


    byte[] bytes = m1.serialize();
    HMapIFW m2 = HMapIFW.create(bytes);


    assertTrue(m2.size() == 0);
  }

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of edu.umd.cloud9.io.map.HMapIFW

bak.pcj.IntIterator

edu.umd.cloud9.example.bfs.BfsNodeTest

edu.umd.cloud9.example.pagerank.PageRankNodeTest

edu.umd.cloud9.io.array.ArrayListOfIntsWritable

edu.umd.cloud9.io.fastutil.Int2FloatOpenHashMapWritableTest

edu.umd.cloud9.io.fastutil.Int2IntOpenHashMapWritableTest

edu.umd.cloud9.io.fastutil.String2FloatOpenHashMapWritableTest

edu.umd.cloud9.io.fastutil.String2IntOpenHashMapWritableTest

edu.umd.cloud9.io.map.HMapIDW

edu.umd.cloud9.io.map.HMapIDWTest

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.