01: /*
02:
03: Derby - Class org.apache.derby.iapi.services.io.AccessibleByteArrayOutputStream
04:
05: Licensed to the Apache Software Foundation (ASF) under one or more
06: contributor license agreements. See the NOTICE file distributed with
07: this work for additional information regarding copyright ownership.
08: The ASF licenses this file to you under the Apache License, Version 2.0
09: (the "License"); you may not use this file except in compliance with
10: the License. You may obtain a copy of the License at
11:
12: http://www.apache.org/licenses/LICENSE-2.0
13:
14: Unless required by applicable law or agreed to in writing, software
15: distributed under the License is distributed on an "AS IS" BASIS,
16: WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17: See the License for the specific language governing permissions and
18: limitations under the License.
19:
20: */
21:
22: package org.apache.derby.iapi.services.io;
23:
24: import java.io.ByteArrayOutputStream;
25:
26: /**
27: * This allows us to get to the byte array to go back and
28: * edit contents or get the array without having a copy made.
29: <P>
30: Since a copy is not made, users must be careful that no more
31: writes are made to the stream if the array reference is handed off.
32: * <p>
33: * Users of this must make the modifications *before* the
34: * next write is done, and then release their hold on the
35: * array.
36:
37: */
38: public class AccessibleByteArrayOutputStream extends
39: ByteArrayOutputStream {
40:
41: public AccessibleByteArrayOutputStream() {
42: super ();
43: }
44:
45: public AccessibleByteArrayOutputStream(int size) {
46: super (size);
47: }
48:
49: /**
50: * The caller promises to set their variable to null
51: * before any other calls to write to this stream are made.
52: Or promises to throw away references to the stream before
53: passing the array reference out of its control.
54: */
55: public byte[] getInternalByteArray() {
56: return buf;
57: }
58: }
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