Examples with MVELDialect org.drools.compiler.rule.builder.dialect.mvel.MVELDialect used on opensource projects

Example 6 with MVELDialect

use of org.drools.compiler.rule.builder.dialect.mvel.MVELDialect in project drools by kiegroup.

the class PatternBuilder method createAndBuildPredicate.

protected Constraint createAndBuildPredicate(RuleBuildContext context, Pattern pattern, BaseDescr base, String expr, Map<String, OperatorDescr> aliases) {
    Dialect dialect = context.getDialect();
    MVELDialect mvelDialect = (MVELDialect) context.getDialect("mvel");
    context.setDialect(mvelDialect);
    PredicateDescr pdescr = new PredicateDescr(context.getRuleDescr().getResource(), expr);
    pdescr.copyParameters(base);
    pdescr.copyLocation(base);
    Constraint evalConstraint = buildEval(context, pattern, pdescr, aliases, expr, false);
    // fall back to original dialect
    context.setDialect(dialect);
    return evalConstraint;
}