Examples of org.apache.derby.impl.io.vfmem.BlockedByteArray.writeBytes()

Class org.apache.derby.impl.io.vfmem.BlockedByteArray

Examples of org.apache.derby.impl.io.vfmem.BlockedByteArray.writeBytes()

org.apache.derby.impl.io.vfmem.BlockedByteArray.writeBytes()
Writes the given bytes into the blocked byte array. @param pos the position to start writing at @param buf the source buffer @param offset the offset into the source buffer @param len the number of bytes to write @return The number of bytes written.


    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);

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        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());
    }

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    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);

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        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());
    }

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        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

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        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());

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        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;
    }
}

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    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);

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        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());
    }

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    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);

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