Examples with From org.drools.model.From used on opensource projects

Example 1 with From

use of org.drools.model.From in project drools by kiegroup.

the class ViewFlowBuilder method addInputFromVariableSource.

private static void addInputFromVariableSource(Map<Variable<?>, InputViewItemImpl<?>> inputs, Variable<?> patterVariable) {
    if (patterVariable instanceof Declaration) {
        Declaration declaration = ((Declaration) patterVariable);
        if (declaration.getSource() instanceof From) {
            Variable var = ((From) declaration.getSource()).getVariable();
            addInputFromVariableSource(inputs, var);
            if (var.isFact()) {
                inputs.putIfAbsent(var, (InputViewItemImpl) input(var));
            }
        }
    }
}

Example 2 with From

use of org.drools.model.From in project drools by kiegroup.

the class KiePackagesBuilder method addPatternForVariable.

private Pattern addPatternForVariable(RuleContext ctx, GroupElement group, Variable patternVariable) {
    Pattern pattern = new Pattern(ctx.getNextPatternIndex(), // offset will be set by ReteooBuilder
    0, getObjectType(patternVariable), patternVariable.getName(), true);
    if (patternVariable instanceof org.drools.model.Declaration) {
        org.drools.model.Declaration decl = (org.drools.model.Declaration) patternVariable;
        if (decl.getSource() != null) {
            if (decl.getSource() instanceof EntryPoint) {
                pattern.setSource(new EntryPointId(((EntryPoint) decl.getSource()).getName()));
            } else if (decl.getSource() instanceof WindowReference) {
                WindowReference<?> window = (WindowReference) decl.getSource();
                if (!ctx.getPkg().getWindowDeclarations().containsKey(window.getName())) {
                    createWindowReference(ctx, window);
                }
                pattern.setSource(new org.drools.core.rule.WindowReference(window.getName()));
            } else if (decl.getSource() instanceof From) {
                From<?> from = (From) decl.getSource();
                DataProvider provider = new LambdaDataProvider(ctx.getDeclaration(from.getVariable()), from.getProvider(), from.isReactive());
                org.drools.core.rule.From fromSource = new org.drools.core.rule.From(provider);
                fromSource.setResultPattern(pattern);
                pattern.setSource(fromSource);
            } else if (decl.getSource() instanceof UnitData) {
                UnitData unitData = (UnitData) decl.getSource();
                pattern.setSource(new EntryPointId(ctx.getRule().getRuleUnitClassName() + "." + unitData.getName()));
            } else {
                throw new UnsupportedOperationException("Unknown source: " + decl.getSource());
            }
        } else {
            Accumulate accSource = ctx.getAccumulateSource(patternVariable);
            if (accSource != null) {
                for (RuleConditionElement element : group.getChildren()) {
                    if (element instanceof Pattern && ((Pattern) element).getSource() == accSource) {
                        if (accSource instanceof MultiAccumulate) {
                            ((Pattern) element).getConstraints().forEach(pattern::addConstraint);
                            ((Pattern) element).getDeclarations().values().forEach(d -> {
                                pattern.addDeclaration(d);
                                d.setPattern(pattern);
                            });
                        }
                        group.getChildren().remove(element);
                        break;
                    }
                }
                pattern.setSource(accSource);
            }
        }
        if (decl.getWindow() != null) {
            pattern.addBehavior(createWindow(decl.getWindow()));
        }
    }
    ctx.registerPattern(patternVariable, pattern);
    return pattern;
}