01: /*
02:
03: Derby - Class org.apache.derby.iapi.services.locks.Limit
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.locks;
23:
24: import org.apache.derby.iapi.error.StandardException;
25: import java.util.Enumeration;
26:
27: /**
28: A limit represents a callback on a lock
29: group. It is called when the size of
30: the group reaches the limit set on the
31: call.
32:
33: @see LockFactory#setLimit
34: */
35: public interface Limit {
36:
37: /**
38: Called by the lock factory when a limit has been reached.
39:
40: @param compatabilitySpace lock space the limit was set for
41: @param group lock group the limit was set for
42: @param limit the limit's setting
43: @param lockList the list of Lockable's in the group
44: @param lockCount the number of locks in the group
45:
46: @exception StandardException Standard Cloudscape error policy.
47: */
48: public void reached(Object compatabilitySpace, Object group,
49: int limit, Enumeration lockList, int lockCount)
50: throws StandardException;
51:
52: }
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