package org.drools.spring.metadata;
/*
* Copyright 2005 (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 org.drools.DroolsException;
import org.drools.rule.Declaration;
import org.drools.rule.Rule;
import org.drools.spring.pojorule.Argument;
import org.drools.spring.pojorule.FactArgument;
public final class FactArgumentMetadata implements ArgumentMetadata {
static final String BASE_DEFAULT_IDENTIFIER = "Fact$";
private String identifier;
private final Class parameterClass;
public FactArgumentMetadata(String identifier, Class parameterClass) {
if (parameterClass == null) {
throw new IllegalArgumentException("parameterClass must not be null");
}
if (identifier == null || identifier.trim().length() == 0) {
this.identifier = getDefaultIdentifier(parameterClass);
} else {
this.identifier = identifier;
}
this.parameterClass = parameterClass;
}
public String getIdentifier() {
return identifier;
}
public Class getParameterClass() {
return parameterClass;
}
public Argument createArgument(Rule rule) throws DroolsException {
Declaration declaration = rule.getParameterDeclaration(identifier);
if (declaration == null) {
BeanObjectType objectType = new BeanObjectType(parameterClass);
declaration = rule.addParameterDeclaration(identifier, objectType);
}
return new FactArgument(declaration);
}
static String getDefaultIdentifier(Class parameterClass) {
return BASE_DEFAULT_IDENTIFIER + parameterClass.getName();
}
}