package org.drools.ruleflow.core.impl;
/*
* Copyright 2005 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import java.util.Iterator;
import java.util.List;
import org.drools.ruleflow.core.Connection;
import org.drools.ruleflow.core.RuleSetNode;
/**
* Default implementation of a RuleSet node.
*
* @author <a href="mailto:kris_verlaenen@hotmail.com">Kris Verlaenen</a>
*/
public class RuleSetNodeImpl extends NodeImpl
implements
RuleSetNode {
private static final long serialVersionUID = 400L;
private String ruleFlowGroup;
public void setRuleFlowGroup(final String ruleFlowGroup) {
this.ruleFlowGroup = ruleFlowGroup;
}
public String getRuleFlowGroup() {
return this.ruleFlowGroup;
}
public Connection getFrom() {
final List list = getIncomingConnections();
if ( list.size() > 0 ) {
return (Connection) list.get( 0 );
}
return null;
}
public Connection getTo() {
final List list = getOutgoingConnections();
if ( list.size() > 0 ) {
return (Connection) list.get( 0 );
}
return null;
}
protected void validateAddIncomingConnection(final Connection connection) {
super.validateAddIncomingConnection( connection );
if ( getIncomingConnections().size() > 0 ) {
throw new IllegalArgumentException( "A RuleSetNode cannot have more than one incoming node" );
}
}
protected void validateAddOutgoingConnection(final Connection connection) {
super.validateAddOutgoingConnection( connection );
for ( final Iterator it = getOutgoingConnections().iterator(); it.hasNext(); ) {
final Connection conn = (Connection) it.next();
if ( conn.getType() == connection.getType() ) {
throw new IllegalArgumentException( "A RuleSetNode can have at most one outgoing node" );
}
}
}
}