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/**
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*
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*/
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package eu.dnetlib.data.collective.transformation.engine.functions;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.apache.oro.text.perl.MalformedPerl5PatternException;
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import org.apache.oro.text.perl.Perl5Util;
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/**
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* @author jochen
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*
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*/
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public class RegularExpression extends AbstractTransformationFunction {
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public static final Log log = LogFactory.getLog(RegularExpression.class);
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public static final String paramRegularExpr = "regularExpression";
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public static final String paramExpr1 = "expr1";
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public static final String paramExpr2 = "expr2";
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private Perl5Util util = new Perl5Util();
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/* (non-Javadoc)
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* @see eu.dnetlib.data.collective.transformation.engine.functions.AbstractTransformationFunction#execute()
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*/
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@Override
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String execute() throws ProcessingException {
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// TODO Auto-generated method stub
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return null;
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}
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public String executeSingleValue(String aRegularExpression, String aExpr1, String aExpr2) throws ProcessingException{
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String result = "";
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if (aRegularExpression.startsWith("m/")){
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if (util.match(aRegularExpression, aExpr1))
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result = util.group(1);
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}else if (!aRegularExpression.startsWith("s/")){
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// assume match and extract
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// throw new ProcessingException("unsupported or invalid regular expression: " + aRegularExpression);
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if (util.match(aRegularExpression, aExpr1)){
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String funder = util.group(1).toLowerCase();
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String projectId = util.group(3);
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result = funder + "_" + projectId;
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}
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}else{
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try{
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result = util.substitute(aRegularExpression, aExpr1);
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}catch(MalformedPerl5PatternException patternExc){
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log.fatal("aRegularExpression: " + aRegularExpression);
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log.fatal("aExpr1: " + aExpr1);
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log.fatal(patternExc.getMessage());
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throw new ProcessingException(patternExc);
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}
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}
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return result;
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}
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}
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