OPENDJ-1472 : File based changelog : optimize random seek in each log file ...

Jean-Noel Rouvignac

22.32.2014 ffd004e91798383664c810e0e276b40c69170984

OPENDJ-1472 : File based changelog : optimize random seek in each log file
CR-3727

Add method ByteStringBuilder#append(DataInput, int) to avoid byte array copy

 opendj-core/src/main/java/org/forgerock/opendj/ldap/ByteStringBuilder.java

@@ -26,6 +26,8 @@
 */
package org.forgerock.opendj.ldap;

import java.io.DataInput;
import java.io.EOFException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
@@ -466,7 +468,33 @@
        // The 1 byte char assumption was correct
        this.length += len;
        return this;
    }

    /**
     * Appends the provided {@code DataInput} to this byte string
     * builder.
     *
     * @param stream
     *          The data input stream to be appended to this byte string
     *          builder.
     * @param length
     *          The maximum number of bytes to be appended from {@code
     *          input}.
     * @throws IndexOutOfBoundsException
     *           If {@code length} is less than zero.
     * @throws EOFException
     *           If this stream reaches the end before reading all the bytes.
     * @throws IOException
     *           If an I/O error occurs.
     */
    public void append(DataInput stream, int length) throws EOFException, IOException {
        if (length < 0) {
            throw new IndexOutOfBoundsException();
        }

        ensureAdditionalCapacity(length);
        stream.readFully(buffer, this.length, length);
        this.length = length;
    }

    /**