Source code: org/apache/derby/iapi/sql/depend/Dependency.java
1 /*
2
3 Derby - Class org.apache.derby.iapi.sql.depend.Dependency
4
5 Copyright 1997, 2004 The Apache Software Foundation or its licensors, as applicable.
6
7 Licensed under the Apache License, Version 2.0 (the "License");
8 you may not use this file except in compliance with the License.
9 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, software
14 distributed under the License is distributed on an "AS IS" BASIS,
15 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 See the License for the specific language governing permissions and
17 limitations under the License.
18
19 */
20
21 package org.apache.derby.iapi.sql.depend;
22
23 import org.apache.derby.iapi.error.StandardException;
24
25 import org.apache.derby.catalog.UUID;
26
27 /**
28 A dependency represents a reliance of the dependent on
29 the provider for some information the dependent contains
30 or uses. In Language, the usual case is a prepared statement
31 using information about a schema object in its executable form.
32 It needs to be notified if the schema object changes, so that
33 it can recompile against the new information.
34 */
35 public interface Dependency {
36
37 /**
38 return the provider's key for this dependency.
39 @return the provider's key for this dependency
40 */
41 UUID getProviderKey();
42
43 /**
44 return the provider for this dependency.
45 @return the provider for this dependency
46 */
47 Provider getProvider();
48
49 /**
50 return the dependent for this dependency.
51 @return the dependent for this dependency
52 */
53 Dependent getDependent();
54
55 }