Examples with DMNFilterEvaluator org.kie.dmn.core.ast.DMNFilterEvaluator used on opensource projects

Example 1 with DMNFilterEvaluator

use of org.kie.dmn.core.ast.DMNFilterEvaluator in project drools by kiegroup.

the class DMNEvaluatorCompiler method compileFilter.

private DMNExpressionEvaluator compileFilter(DMNCompilerContext ctx, DMNModelImpl model, DMNBaseNode node, String exprName, Filter expression) {
    DMNExpressionEvaluator inEvaluator = compileExpression(ctx, model, node, exprName + " [in]", expression.getIn().getExpression());
    DMNExpressionEvaluator filterEvaluator;
    try {
        ctx.enterFrame();
        DMNType outputType = compiler.resolveTypeRef(model, null, node.getSource(), expression.getTypeRef());
        DMNType elementType = outputType;
        if (elementType != null && elementType.isCollection() && elementType instanceof BaseDMNTypeImpl) {
            elementType = extractOrSynthesizeGeneric(model, (BaseDMNTypeImpl) elementType);
        }
        ctx.setVariable("item", elementType != null ? elementType : model.getTypeRegistry().unknown());
        if (elementType != null && elementType.isComposite()) {
            elementType.getFields().forEach((k, v) -> ctx.setVariable(k, v != null ? v : model.getTypeRegistry().unknown()));
        }
        filterEvaluator = compileExpression(ctx, model, node, exprName + " [filter]", expression.getMatch().getExpression());
    } finally {
        ctx.exitFrame();
    }
    if (inEvaluator == null) {
        MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, node.getSource(), model, null, null, Msg.MISSING_EXPRESSION_FOR_FILTER, "in", node.getIdentifierString());
        return null;
    }
    if (filterEvaluator == null) {
        MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, node.getSource(), model, null, null, Msg.MISSING_EXPRESSION_FOR_FILTER, "filter", node.getIdentifierString());
        return null;
    }
    return new DMNFilterEvaluator(exprName, node.getSource(), inEvaluator, filterEvaluator);
}