protected ConstraintConnectiveDescr parseExpression( final RuleBuildContext context,
final PatternDescr patternDescr,
final BaseDescr original,
final String expression ) {
DrlExprParser parser = new DrlExprParser( context.getConfiguration().getLanguageLevel() );
ConstraintConnectiveDescr result = parser.parse( expression );
result.copyLocation( original );
if ( parser.hasErrors() ) {
for ( DroolsParserException error : parser.getErrors() ) {
context.addError(new DescrBuildError(context.getParentDescr(),
patternDescr,
null,
"Unable to parser pattern expression:\n" + error.getMessage()));
}