com.bstek.urule.builder.table.CellScriptDSLBuilder Maven / Gradle / Ivy
/*******************************************************************************
* Copyright 2017 Bstek
*
* 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 com.bstek.urule.builder.table;
import org.antlr.v4.runtime.ANTLRInputStream;
import org.antlr.v4.runtime.CommonTokenStream;
import com.bstek.urule.RuleException;
import com.bstek.urule.dsl.CellScriptRuleParserBaseVisitor;
import com.bstek.urule.dsl.RuleParserLexer;
import com.bstek.urule.dsl.RuleParserParser;
import com.bstek.urule.dsl.ScriptDecisionTableErrorListener;
/**
* @author Jacky.gao
* @since 2015年5月6日
*/
public class CellScriptDSLBuilder {
public String buildCriteriaScript(String script,String propertyName){
ANTLRInputStream antlrInputStream=new ANTLRInputStream(script);
RuleParserLexer lexer=new RuleParserLexer(antlrInputStream);
CommonTokenStream tokenStream=new CommonTokenStream(lexer);
RuleParserParser parser=new RuleParserParser(tokenStream);
ScriptDecisionTableErrorListener errorListener=new ScriptDecisionTableErrorListener();
parser.addErrorListener(errorListener);
CellScriptRuleParserBaseVisitor visitor=new CellScriptRuleParserBaseVisitor(propertyName);
String resultScript=visitor.visit(parser.decisionTableCellCondition());
String error=errorListener.getErrorMessage();
if(error!=null){
throw new RuleException("Script Parse error:"+error);
}
return resultScript;
}
}