01: /*
02:
03: Derby - Class org.apache.derby.iapi.store.access.SpaceInfo
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.store.access;
23:
24: /**
25:
26: Manage the result information from a single call to
27: ConglomerateController.getSpaceInfo().
28: <p>
29: @see org.apache.derby.iapi.store.access.ConglomerateController
30:
31: **/
32:
33: public interface SpaceInfo {
34: /**
35: * Get the estimated number of allocated pages
36: **/
37: public long getNumAllocatedPages();
38:
39: /**
40: * Get the estimated number of free pages
41: **/
42: public long getNumFreePages();
43:
44: /**
45: * Get the estimated number of unfilled pages
46: **/
47: public long getNumUnfilledPages();
48:
49: /**
50: * Get the page size
51: **/
52: public int getPageSize();
53:
54: }
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