1 package org.drools.jsr94.rules.admin;
2
3 /*
4 $Id: RuleAdministratorImpl.java,v 1.5 2003/06/19 09:28:35 tdiesler Exp $
5
6 Copyright 2002 (C) The Werken Company. All Rights Reserved.
7
8 Redistribution and use of this software and associated documentation
9 ("Software"), with or without modification, are permitted provided
10 that the following conditions are met:
11
12 1. Redistributions of source code must retain copyright
13 statements and notices. Redistributions must also contain a
14 copy of this document.
15
16 2. Redistributions in binary form must reproduce the
17 above copyright notice, this list of conditions and the
18 following disclaimer in the documentation and/or other
19 materials provided with the distribution.
20
21 3. The name "drools" must not be used to endorse or promote
22 products derived from this Software without prior written
23 permission of The Werken Company. For written permission,
24 please contact bob@werken.com.
25
26 4. Products derived from this Software may not be called "drools"
27 nor may "drools" appear in their names without prior written
28 permission of The Werken Company. "drools" is a registered
29 trademark of The Werken Company.
30
31 5. Due credit should be given to The Werken Company.
32 (http://drools.werken.com/).
33
34 THIS SOFTWARE IS PROVIDED BY THE WERKEN COMPANY AND CONTRIBUTORS
35 ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
36 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
37 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
38 THE WERKEN COMPANY OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
39 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
40 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
41 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
42 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
43 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
44 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
45 OF THE POSSIBILITY OF SUCH DAMAGE.
46
47 */
48
49 import javax.rules.admin.*;
50 import java.util.Map;
51
52 /***
53 * The <code>RuleAdministrator</code> interface is used by rule execution set
54 * administrators to load rule execution sets from external sources and
55 * create a RuleExecutionSet runtime object.
56 *
57 * @see RuleAdministrator
58 *
59 * @author <a href="mailto:thomas.diesler@softcon-itec.de">thomas diesler</a>
60 */
61 public class RuleAdministratorImpl implements RuleAdministrator
62 {
63
64 /***
65 * Returns a <code>RemoteRuleExecutionSetProvider</code> implementation.
66 *
67 * @see RuleAdministrator
68 */
69 public RuleExecutionSetProvider getRuleExecutionSetProvider( Map properties )
70 {
71 return new RuleExecutionSetProviderImpl();
72 }
73
74 /***
75 * Returns a <code>LocalRuleExecutionSetProvider</code> implementation.
76 *
77 * @see RuleAdministrator#getLocalRuleExecutionSetProvider
78 */
79 public LocalRuleExecutionSetProvider getLocalRuleExecutionSetProvider( Map properties )
80 {
81 return new LocalRuleExecutionSetProviderImpl();
82 }
83
84 /***
85 * Registers a <code>RuleExecutionSet</code> and associates it with a given URI.
86 *
87 * @see RuleAdministrator#registerRuleExecutionSet
88 */
89 public void registerRuleExecutionSet( String bindUri, RuleExecutionSet ruleExecutionSet, Map properties ) throws RuleExecutionSetRegisterException
90 {
91
92 try
93 {
94 //Note: an existing RuleExecutionSet is simply replaced
95 RuleExecutionSetRepository repository = RuleExecutionSetRepository.getInstance();
96 repository.registerRuleExecutionSet( bindUri, ruleExecutionSet );
97 }
98 catch ( Exception ex )
99 {
100 throw new RuleExecutionSetRegisterException( "cannot register rule set", ex );
101 }
102 }
103
104 /***
105 * Unregisters a previously registers <code>RuleExecutionSet</code> from a URI.
106 *
107 * @see RuleAdministrator#unregisterRuleExecutionSet
108 */
109 public void unregisterRuleExecutionSet( String bindUri, Map properties ) throws RuleExecutionSetUnregisterException
110 {
111
112 RuleExecutionSetRepository repository = RuleExecutionSetRepository.getInstance();
113
114 if ( repository.getRuleExecutionSet( bindUri ) == null )
115 throw new RuleExecutionSetUnregisterException( "no execution set bound to: " + bindUri );
116
117 try
118 {
119 repository.unregisterRuleExecutionSet( bindUri );
120 }
121 catch ( Exception ex )
122 {
123 throw new RuleExecutionSetUnregisterException( "cannot unregister rule set", ex );
124 }
125 }
126 }
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