Examples with BlockedByteArray org.apache.derby.impl.io.vfmem.BlockedByteArray used on opensource projects

Example 1 with BlockedByteArray

use of org.apache.derby.impl.io.vfmem.BlockedByteArray in project derby by apache.

the class BlockedByteArrayTest method testReadSingle.

public void testReadSingle() throws IOException {
    int size = 65 * 1024;
    BlockedByteArray src = createBlockedByteArray(size);
    int read = 0;
    while (src.read(read) != -1) {
        read++;
    }
}

Example 2 with BlockedByteArray

use of org.apache.derby.impl.io.vfmem.BlockedByteArray in project derby by apache.

the class BlockedByteArrayTest method testLength.

public void testLength() throws IOException {
    BlockedByteArray src = createBlockedByteArray(0);
    assertEquals(0L, src.length());
    src.writeByte(0L, (byte) 1);
    assertEquals(1L, src.length());
    src.writeByte(0L, (byte) 1);
    assertEquals(1L, src.length());
    src.writeByte(9L, (byte) 2);
    assertEquals(10L, src.length());
    byte[] bytes = new byte[4096];
    Arrays.fill(bytes, (byte) 7);
    src.writeBytes(0L, bytes, 0, bytes.length);
    assertEquals(bytes.length, src.length());
    src.writeBytes(bytes.length, bytes, 0, bytes.length);
    assertEquals(2 * bytes.length, src.length());
    // Test setLength
    src.setLength(55555);
    assertEquals(55555, src.length());
    src.setLength(44444);
    assertEquals(44444, src.length());
}

Example 3 with BlockedByteArray

use of org.apache.derby.impl.io.vfmem.BlockedByteArray in project derby by apache.

the class BlockedByteArrayTest method testLengthNoInitialBlocksWriteMultipleBytes4K.

public void testLengthNoInitialBlocksWriteMultipleBytes4K() {
    BlockedByteArray src = new BlockedByteArray();
    byte[] buf = new byte[4 * 1024];
    Arrays.fill(buf, (byte) 1);
    src.writeBytes(0, buf, 0, buf.length);
    assertEquals(buf.length, src.length());
    Arrays.fill(buf, (byte) 2);
    src.writeBytes(buf.length, buf, 0, buf.length);
    assertEquals(2 * buf.length, src.length());
    src.writeByte(69, (byte) 8);
    assertEquals(2 * buf.length, src.length());
}

Example 4 with BlockedByteArray

use of org.apache.derby.impl.io.vfmem.BlockedByteArray in project derby by apache.

the class BlockedByteArrayTest method testLengthNoInitialBlocksWriteMultipleBytes4KPlussAFew.

public void testLengthNoInitialBlocksWriteMultipleBytes4KPlussAFew() {
    BlockedByteArray src = new BlockedByteArray();
    byte[] buf = new byte[4 * 1024 + 37];
    Arrays.fill(buf, (byte) 1);
    src.writeBytes(0, buf, 0, buf.length);
    assertEquals(buf.length, src.length());
    Arrays.fill(buf, (byte) 2);
    src.writeBytes(buf.length, buf, 0, buf.length);
    assertEquals(2 * buf.length, src.length());
    src.writeByte(54, (byte) 7);
    assertEquals(2 * buf.length, src.length());
}

Example 5 with BlockedByteArray

use of org.apache.derby.impl.io.vfmem.BlockedByteArray in project derby by apache.

the class BlockedByteArrayTest method createBlockedByteArray.

/**
 * Creates a blocked byte array and fills it with data.
 *
 * @param length requested length
 * @return A filled blocked byte array.
 * @throws IOException if reading from the source fails
 */
private BlockedByteArray createBlockedByteArray(long length) throws IOException {
    BlockedByteArray data = new BlockedByteArray();
    InputStream src = new LoopingAlphabetStream(length);
    byte[] buf = new byte[4 * 1024];
    long pos = 0;
    while (pos < length) {
        int readFromSrc = src.read(buf);
        pos += data.writeBytes(pos, buf, 0, readFromSrc);
    }
    return data;
}