Examples with PositionedStream org.apache.derby.iapi.types.PositionedStream used on opensource projects

Example 1 with PositionedStream

use of org.apache.derby.iapi.types.PositionedStream in project derby by apache.

the class CharacterStreamDescriptorTest method testSetValues.

public void testSetValues() {
    final long charLength = 1023;
    final long byteLength = 1023 * 2;
    final long curBytePos = 4;
    final long curCharPos = 2;
    final long dataOffset = 2;
    final long maxCharLen = 2459;
    InputStream emptyStream = new ByteArrayInputStream(new byte[] {});
    CharacterStreamDescriptor.Builder b = new CharacterStreamDescriptor.Builder().bufferable(true).byteLength(byteLength).charLength(charLength).curBytePos(curBytePos).curCharPos(curCharPos).dataOffset(dataOffset).maxCharLength(maxCharLen).stream(emptyStream);
    CharacterStreamDescriptor csd = b.build();
    // Test the values.
    assertEquals(true, csd.isBufferable());
    assertEquals(false, csd.isPositionAware());
    assertEquals(dataOffset, csd.getDataOffset());
    assertEquals(curBytePos, csd.getCurBytePos());
    assertEquals(curCharPos, csd.getCurCharPos());
    assertEquals(byteLength, csd.getByteLength());
    assertEquals(charLength, csd.getCharLength());
    assertEquals(maxCharLen, csd.getMaxCharLength());
    PositionedStream emptyPS = new PositionedTestStream(curBytePos);
    // Set only a few values.
    csd = new CharacterStreamDescriptor.Builder().bufferable(true).positionAware(true).maxCharLength(maxCharLen).stream(emptyPS.asInputStream()).build();
    assertEquals(true, csd.isBufferable());
    assertEquals(true, csd.isPositionAware());
    assertEquals(maxCharLen, csd.getMaxCharLength());
    // Set data offset and update the character position accordingly.
    csd = new CharacterStreamDescriptor.Builder().bufferable(true).positionAware(true).dataOffset(dataOffset).curCharPos(CharacterStreamDescriptor.BEFORE_FIRST).stream(emptyPS.asInputStream()).build();
    assertEquals(true, csd.isBufferable());
    assertEquals(true, csd.isPositionAware());
    assertEquals(dataOffset, csd.getDataOffset());
    assertEquals(CharacterStreamDescriptor.BEFORE_FIRST, csd.getCurCharPos());
}