package org.drools.jsr94.rules;
/*
* $Id: RuleServiceProviderImpl.java,v 1.12 2006/01/16 01:31:22 michaelneale Exp $
*
* Copyright 2002-2004 (C) The Werken Company. All Rights Reserved.
*
* Redistribution and use of this software and associated documentation
* ("Software"), with or without modification, are permitted provided that the
* following conditions are met:
*
* 1. Redistributions of source code must retain copyright statements and
* notices. Redistributions must also contain a copy of this document.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The name "drools" must not be used to endorse or promote products derived
* from this Software without prior written permission of The Werken Company.
* For written permission, please contact bob@werken.com.
*
* 4. Products derived from this Software may not be called "drools" nor may
* "drools" appear in their names without prior written permission of The Werken
* Company. "drools" is a registered trademark of The Werken Company.
*
* 5. Due credit should be given to The Werken Company.
* (http://drools.werken.com/).
*
* THIS SOFTWARE IS PROVIDED BY THE WERKEN COMPANY AND CONTRIBUTORS ``AS IS''
* AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE WERKEN COMPANY OR ITS CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
import javax.rules.RuleRuntime;
import javax.rules.RuleServiceProvider;
import javax.rules.admin.RuleAdministrator;
import org.drools.jsr94.rules.admin.RuleAdministratorImpl;
import org.drools.jsr94.rules.admin.RuleExecutionSetRepository;
/**
* This class provides access to the <code>RuleRuntime</code> and
* <code>RuleAdministrator</code> implementation supplied by Drools when
* running under J2SE. <p/> This class should be used in environments without a
* JNDI provider - typically when writing standalone J2SE clients. Within the
* J2EE environment the <code>RuleServiceProvider</code> implementation class
* provided by Drools should be retrieved using a JNDI lookup. <p/> This class
* should be constructed using the
* <code>RuleServiceProviderManager.getRuleServiceProvider</code> method.
*
* @see RuleRuntimeImpl
* @see RuleAdministratorImpl
* @see RuleServiceProvider
* @see javax.rules.RuleServiceProviderManager#getRuleServiceProvider(String)
*
* @author <a href="mailto:thomas.diesler@softcon-itec.de">thomas diesler </a>
*/
public class RuleServiceProviderImpl extends RuleServiceProvider {
/** An instance of <code>RuleRuntimeImpl</code>. */
private RuleRuntime ruleRuntime;
/** An instance of <code>RuleAdministratorImpl</code>. */
private RuleAdministrator ruleAdministrator;
private RuleExecutionSetRepository repository;
/**
* Create a new <code>RuleServiceProviderImpl</code>.
*/
public RuleServiceProviderImpl() {
// no special initialization required
}
/**
* @return
*/
public synchronized RuleExecutionSetRepository getRepository() {
if (this.repository != null) {
return this.repository;
}
return this.repository = new RuleExecutionSetRepository();
}
/**
* Returns a class instance of <code>RuleRuntime</code>. Specifically an
* instance of the Drools <code>RuleRuntimeImpl</code> is returned.
*
* @return an instance of <code>RuleRuntime</code>
*/
public synchronized RuleRuntime getRuleRuntime() {
if (this.ruleRuntime != null) {
return this.ruleRuntime;
}
return this.ruleRuntime = new RuleRuntimeImpl(getRepository());
}
/**
* Returns a class instance of <code>RuleAdministrator</code>.
* Specifically an instance of the Drools <code>RuleAdministratorImpl</code>
* is returned.
*
* @return an instance of <code>RuleAdministrator</code>
*/
public synchronized RuleAdministrator getRuleAdministrator() {
if (this.ruleAdministrator != null) {
return this.ruleAdministrator;
}
return this.ruleAdministrator = new RuleAdministratorImpl(getRepository());
}
}