/**
* Copyright 2010 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.
*/
package org.drools.verifier.builder;
import java.util.ArrayList;
import java.util.Collection;
import org.drools.runtime.rule.Activation;
import org.drools.runtime.rule.AgendaFilter;
/**
*
* @author rikkola
*
*/
public class ScopesAgendaFilter
implements
AgendaFilter {
public final static String VERIFYING_SCOPE_SINGLE_RULE = "single-rule";
public final static String VERIFYING_SCOPE_DECISION_TABLE = "decision-table";
public final static String VERIFYING_SCOPE_KNOWLEDGE_PACKAGE = "knowledge-package";
public final static Collection<String> ALL_SCOPES = new ArrayList<String>() {
private static final long serialVersionUID = 510l;
{
add( VERIFYING_SCOPE_DECISION_TABLE );
add( VERIFYING_SCOPE_SINGLE_RULE );
add( VERIFYING_SCOPE_KNOWLEDGE_PACKAGE );
}
};
public static final String VERIFYING_SCOPES = "verifying_scopes";
private final boolean acceptEmpty;
private final Collection<String> scopes;
/**
*
* @param acceptEmpty true accepts rules that do not have scope set.
* @param scopes Valid scope values.
*/
public ScopesAgendaFilter(boolean acceptEmpty,
Collection<String> scopes) {
this.acceptEmpty = acceptEmpty;
this.scopes = scopes;
}
public ScopesAgendaFilter(boolean acceptEmpty,
String scope) {
this.acceptEmpty = acceptEmpty;
Collection<String> list = new ArrayList<String>();
list.add( scope );
this.scopes = list;
}
public boolean accept(Activation activation) {
if ( acceptEmpty && activation.getRule().listMetaAttributes().isEmpty() ) {
return true;
}
if ( activation.getRule().listMetaAttributes().contains( VERIFYING_SCOPES ) ) {
String[] values = activation.getRule().getMetaAttribute( VERIFYING_SCOPES ).split( "," );
for ( String value : values ) {
if ( scopes.contains( value.trim() ) ) {
return true;
}
}
}
return false;
}
}