01: /*
02: * (c) Copyright 2003, 2004, 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP
03: * All rights reserved.
04: *
05: *
06: */
07:
08: //=======================================================================
09: // Package
10: package com.hp.hpl.jena.db.impl;
11:
12: //=======================================================================
13: // Imports
14:
15: //=======================================================================
16: /**
17: * Interface for database identifiers.
18: * Most RDF entities (resources, literals, statements) have an associated
19: * database index. These are cached using RDB-specific variants of the jena
20: * "impl" classes. This can avoid some redundant database lookup.
21: * <p>
22: * In simple implementations the database identifier is simply an integer
23: * given a database row index allocated by some generator. In other implementations
24: * we use a "unique" hash of the resource or literal data itself. This interface
25: * encapsulates the different ID representations.
26: *
27: * @author <a href="mailto:der@hplb.hpl.hp.com">Dave Reynolds</a>
28: * @version $Revision: 1.7 $ on $Date: 2008/01/02 12:08:24 $
29: */
30:
31: public interface IDBID {
32:
33: /** Return identifier as a generic object which can be supplied to the sql index/store statement */
34: public Object getID();
35:
36: }
37:
38: /*
39: * (c) Copyright 2003, 2004, 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP
40: * All rights reserved.
41: *
42: * Redistribution and use in source and binary forms, with or without
43: * modification, are permitted provided that the following conditions
44: * are met:
45: * 1. Redistributions of source code must retain the above copyright
46: * notice, this list of conditions and the following disclaimer.
47: * 2. Redistributions in binary form must reproduce the above copyright
48: * notice, this list of conditions and the following disclaimer in the
49: * documentation and/or other materials provided with the distribution.
50: * 3. The name of the author may not be used to endorse or promote products
51: * derived from this software without specific prior written permission.
52:
53: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
54: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
55: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
56: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
57: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
58: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
62: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63: */
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