/*
* Copyright 2012 Red Hat, Inc. and/or its affiliates.
*
* 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.workbench.models.commons.backend.rule;
import java.util.Map;
import java.util.TreeMap;
/**
* Utility class to build DRL for CEP operators
*/
public class CEPOperatorParameterDRLBuilder
implements
OperatorParameterDRLBuilder {
public StringBuilder buildDRL( Map<String, String> parameters ) {
TreeMap<Integer, String> sortedParams = new TreeMap<Integer, String>();
for ( Map.Entry<String, String> e : parameters.entrySet() ) {
String key = e.getKey();
String value = e.getValue();
try {
int i = Integer.parseInt( key );
sortedParams.put( Integer.valueOf( i ),
value );
} catch ( NumberFormatException nfe ) {
}
}
StringBuilder b = new StringBuilder();
if ( sortedParams.size() == 0 ) {
return b;
}
b.append( " [" );
for ( Map.Entry<Integer, String> e : sortedParams.entrySet() ) {
b.append( e.getValue() );
b.append( ", " );
}
if ( b.lastIndexOf( "," ) != -1 ) {
b.delete( b.lastIndexOf( "," ),
b.length() );
}
b.append( "]" );
return b;
}
}