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Java > Open Source Codes > org > joseki > server > Processor


1 /*
2  * (c) Copyright 2003, 2004 Hewlett-Packard Development Company, LP
3  * [See end of file]
4  */
5
6
7 package org.joseki.server;
8
9 import org.joseki.server.module.* ;
10 import com.hp.hpl.jena.rdf.model.*;
11
12 /** Interface for all processors.
13  * Query processors have their own, specialised interface.
14  * @see QueryProcessor
15  *
16  * @author Andy Seaborne
17  * @version $Id: Processor.java,v 1.3 2004/04/30 14:13:13 andy_seaborne Exp $
18  */
19
20 public interface Processor extends Loadable
21 {
22     /** Execute the operation.
23      * @return Model Should not be null.
24      */
25
26     public Model exec(Request request) throws ExecutionException ;
27     
28     static final int ARGS_ZERO = 0 ;
29     static final int ARGS_ONE = 1 ;
30     
31     static final int ARGS_ZERO_OR_ONE = -1 ;
32     
33     /** Return the number of argument models this operation
34      * expects in the input request. For HTTP, this is zero or one.
35      */
36     public int argsNeeded() ;
37 }
38
39 /*
40  * (c) Copyright 2003, 2004 Hewlett-Packard Development Company, LP
41  * All rights reserved.
42  *
43  * Redistribution and use in source and binary forms, with or without
44  * modification, are permitted provided that the following conditions
45  * are met:
46  * 1. Redistributions of source code must retain the above copyright
47  * notice, this list of conditions and the following disclaimer.
48  * 2. Redistributions in binary form must reproduce the above copyright
49  * notice, this list of conditions and the following disclaimer in the
50  * documentation and/or other materials provided with the distribution.
51  * 3. The name of the author may not be used to endorse or promote products
52  * derived from this software without specific prior written permission.
53  *
54  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
55  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
56  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
57  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
58  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
59  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
60  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
61  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
62  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
63  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
64  */
65
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