01 /*
02 *
03 * Licensed to the Apache Software Foundation (ASF) under one
04 * or more contributor license agreements. See the NOTICE file
05 * distributed with this work for additional information
06 * regarding copyright ownership. The ASF licenses this file
07 * to you under the Apache License, Version 2.0 (the
08 * "License"); you may not use this file except in compliance
09 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 *
20 */
21 package org.apache.qpid.management.messages;
22
23 import org.apache.qpid.management.Protocol;
24 import org.apache.qpid.management.domain.model.type.Binary;
25
26 /**
27 * Abstract representation of a schema request message.
28 * Concrete subclasses must supply the values needed to build & encode the message.
29 *
30 * @author Andrea Gazzarini
31 */
32 public abstract class SchemaRequestMessage extends ManagementMessage
33 {
34 @Override
35 char opcode ()
36 {
37 return Protocol.SCHEMA_REQUEST_OPCODE;
38 }
39
40 /**
41 * Returns the package name.
42 *
43 * @return the package name.
44 */
45 protected abstract String packageName();
46
47 /**
48 * Returns the class name.
49 *
50 * @return the class name.
51 */
52 protected abstract String className();
53
54 /**
55 * Returns the schema hash.
56 *
57 * @return the schema hash.
58 */
59 protected abstract Binary schemaHash();
60
61 @Override
62 final void specificMessageEncoding ()
63 {
64 _codec.writeStr8(packageName());
65 _codec.writeStr8(className());
66 schemaHash().encode(_codec);
67 }
68 }
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