package org.drools.spring.pojorule;
/*
* 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 java.util.ArrayList;
import java.util.List;
import org.drools.rule.Declaration;
import org.drools.spi.Condition;
import org.drools.spi.ConditionException;
import org.drools.spi.Tuple;
public class PojoCondition implements Condition {
private final RuleReflectMethod ruleMethod;
private final Declaration[] requiredDeclarations;
public PojoCondition(RuleReflectMethod ruleMethod) {
this.ruleMethod = ruleMethod;
this.requiredDeclarations = extractDeclarations(ruleMethod.getArguments());
}
public String getMethodName() {
return ruleMethod.getMethodName();
}
private static Declaration[] extractDeclarations(Argument[] arguments) {
List declarations = new ArrayList(arguments.length);
for (int i = 0; i < arguments.length; i++) {
Argument argument = arguments[i];
if (argument instanceof FactArgument) {
declarations.add(((FactArgument) argument).getDeclaration());
}
}
return (Declaration[])declarations.toArray(new Declaration[declarations.size()]);
}
public Declaration[] getRequiredTupleMembers() {
return requiredDeclarations;
}
public boolean isAllowed(Tuple tuple) throws ConditionException {
try {
return ((Boolean)ruleMethod.invokeMethod(tuple)).booleanValue();
} catch (Exception e) {
throw new ConditionException(e);
}
}
/**
* This only compares the ruleMethod, as to facilitate node sharing in the RETE network
*/
public boolean equals(Object other) {
if (this == other) {
return true;
}
if (!(other instanceof PojoCondition)) {
return false;
}
final PojoCondition pojoCondition = (PojoCondition)other;
if (!ruleMethod.equals(pojoCondition.ruleMethod)) {
return false;
}
return true;
}
public int hashCode()
{
return ruleMethod.hashCode();
}
public String toString() {
return ruleMethod.toString();
}
}