How to use

isDirect

method

in

org.apache.mina.codec.IoBuffer

/**
 * Extends the current IoBuffer capacity.
 * 
 * @param size
 *            the number of bytes to extend the current IoBuffer
 * @return the current {@link IoBuffer}
 */
public IoBuffer extend(int size) {
  ByteBuffer extension = isDirect() ? ByteBuffer.allocateDirect(size) : ByteBuffer.allocate(size);
  add(extension);
  return this;
}

/**
 * Test the allocation of a new direct IoBuffer with no byte in it
 */
@Test
public void testAllocateDirect0() {
  IoBuffer ioBuffer = IoBuffer.allocateDirect(0);
  assertTrue(ioBuffer.isDirect());
  assertEquals(0, ioBuffer.capacity());
  assertEquals(0, ioBuffer.limit());
  assertEquals(0, ioBuffer.position());
  assertFalse(ioBuffer.hasRemaining());
}

/**
 * Test the allocation of a new heap IoBuffer with no byte in it
 */
@Test
public void testAllocate0() {
  IoBuffer ioBuffer = IoBuffer.allocate(0);
  assertFalse(ioBuffer.isDirect());
  assertEquals(0, ioBuffer.capacity());
  assertEquals(0, ioBuffer.limit());
  assertEquals(0, ioBuffer.position());
  assertFalse(ioBuffer.hasRemaining());
}

/**
 * Test the allocation of a new direct IoBuffer with 1024 bytes
 */
@Test
public void testAllocateDirect1024() {
  IoBuffer ioBuffer = IoBuffer.allocateDirect(1024);
  assertTrue(ioBuffer.isDirect());
  assertEquals(1024, ioBuffer.capacity());
  assertEquals(1024, ioBuffer.limit());
  assertEquals(0, ioBuffer.position());
  assertTrue(ioBuffer.hasRemaining());
}

/**
 * Test the allocation of a new heap IoBuffer with 1024 bytes
 */
@Test
public void testAllocate1024() {
  IoBuffer ioBuffer = IoBuffer.allocate(1024);
  assertFalse(ioBuffer.isDirect());
  assertEquals(1024, ioBuffer.capacity());
  assertEquals(1024, ioBuffer.limit());
  assertEquals(0, ioBuffer.position());
  assertTrue(ioBuffer.hasRemaining());
}