Examples with Pattern org.drools.impact.analysis.model.left.Pattern used on opensource projects

Example 1 with Pattern

use of org.drools.impact.analysis.model.left.Pattern in project drools by kiegroup.

the class ModelToGraphConverter method generateGraphAnalysis.

private GraphAnalysis generateGraphAnalysis(AnalysisModel model) {
    GraphAnalysis graphAnalysis = new GraphAnalysis();
    for (Package pkg : model.getPackages()) {
        List<Rule> rules = pkg.getRules();
        for (Rule rule : rules) {
            graphAnalysis.addNode(new Node(rule));
            LeftHandSide lhs = rule.getLhs();
            List<Pattern> patterns = lhs.getPatterns();
            for (Pattern pattern : patterns) {
                Class<?> patternClass = pattern.getPatternClass();
                Collection<String> reactOnFields = pattern.getReactOnFields();
                if (pattern.isClassReactive()) {
                    // Pattern which cannot analyze reactivity (e.g. Person(blackBoxMethod())) so reacts to all properties
                    graphAnalysis.addClassReactiveRule(patternClass, rule, pattern.isPositive());
                } else if (reactOnFields.isEmpty()) {
                    // Pattern without constraint (e.g. Person()) so doesn't react to properties (only react to  insert/delete)
                    graphAnalysis.addInsertReactiveRule(patternClass, rule, pattern.isPositive());
                } else {
                    for (String field : reactOnFields) {
                        graphAnalysis.addPropertyReactiveRule(patternClass, field, rule, pattern.isPositive());
                    }
                }
            }
        }
    }
    return graphAnalysis;
}

Example 2 with Pattern

use of org.drools.impact.analysis.model.left.Pattern in project drools by kiegroup.

the class LhsParser method parsePattern.

private Pattern parsePattern(RuleContext context, PatternDescr patternDescr, boolean positive) {
    if (context.getRuleUnitDescr() != null) {
        patternDescr = PatternUtil.normalizeOOPathPattern(patternDescr, context);
    }
    String type = patternDescr.getObjectType();
    Class<?> patternClass;
    try {
        patternClass = pkgRegistry.getTypeResolver().resolveType(type);
    } catch (ClassNotFoundException e) {
        throw new RuntimeException(e);
    }
    Pattern pattern = new Pattern(patternClass, positive);
    if (patternDescr.getIdentifier() != null) {
        context.addDeclaration(patternDescr.getIdentifier(), patternClass);
    }
    ConstraintParser constraintParser = ConstraintParser.defaultConstraintParser(context, packageModel);
    for (BaseDescr constraintDescr : patternDescr.getConstraint().getDescrs()) {
        parseConstraint(context, patternDescr, pattern, constraintParser, constraintDescr);
    }
    return pattern;
}

Example 3 with Pattern

use of org.drools.impact.analysis.model.left.Pattern in project drools by kiegroup.

the class ModelToGraphConverter method processModify.

private void processModify(GraphAnalysis graphAnalysis, String pkgName, String ruleName, ModifyAction action) {
    Node source = graphAnalysis.getNode(fqdn(pkgName, ruleName));
    Class<?> modifiedClass = action.getActionClass();
    if (!graphAnalysis.isRegisteredClass(modifiedClass)) {
        // Not likely happen but not invalid
        logger.warn("Not found {} in reactiveMap", modifiedClass);
        return;
    }
    List<ModifiedProperty> modifiedProperties = action.getModifiedProperties();
    for (ModifiedProperty modifiedProperty : modifiedProperties) {
        String property = modifiedProperty.getProperty();
        for (AnalyzedRule reactedRule : graphAnalysis.getRulesReactiveTo(modifiedClass, property)) {
            List<Constraint> constraints = reactedRule.getRule().getLhs().getPatterns().stream().filter(pattern -> pattern.getPatternClass() == modifiedClass).flatMap(pattern -> pattern.getConstraints().stream()).filter(constraint -> constraint.getProperty() != null && constraint.getProperty().equals(property)).filter(constraint -> {
                if (constraint instanceof MapConstraint) {
                    return doesAssertSameKey((MapConstraint) constraint, modifiedProperty);
                } else {
                    return true;
                }
            }).collect(Collectors.toList());
            ReactivityType combinedLinkType = ReactivityType.UNKNOWN;
            if (constraints.isEmpty()) {
                // This rule is reactive to the property but cannot find its constraint (e.g. [age > $a] non-literal constraint). It means UNKNOWN impact
                combinedLinkType = ReactivityType.UNKNOWN;
            } else {
                // If constraints contain at least one POSITIVE, we consider it's POSITIVE.
                for (Constraint constraint : constraints) {
                    ReactivityType linkType = linkType(constraint, modifiedProperty);
                    if (linkType == ReactivityType.POSITIVE) {
                        combinedLinkType = ReactivityType.POSITIVE;
                        break;
                    } else if (linkType == ReactivityType.NEGATIVE) {
                        // NEGATIVE is stronger than UNKNOWN (but may be configurable)
                        combinedLinkType = ReactivityType.NEGATIVE;
                    } else if (combinedLinkType == ReactivityType.NEGATIVE && linkType == ReactivityType.UNKNOWN) {
                    // Don't overwrite with UNKNOWN
                    } else {
                        // UNKNOWN
                        combinedLinkType = linkType;
                    }
                }
            }
            if (reactedRule.getReactivityType() == ReactivityType.NEGATIVE) {
                combinedLinkType = combinedLinkType.negate();
            }
            Node target = graphAnalysis.getNode(fqdn(pkgName, reactedRule.getRule().getName()));
            linkNodesIfExpected(source, target, combinedLinkType);
        }
    }
}

Example 4 with Pattern

use of org.drools.impact.analysis.model.left.Pattern in project drools by kiegroup.

the class ModelToGraphConverter method processInsert.

private void processInsert(GraphAnalysis graphAnalysis, String pkgName, String ruleName, InsertAction action) {
    Node source = graphAnalysis.getNode(fqdn(pkgName, ruleName));
    Class<?> insertedClass = action.getActionClass();
    if (!graphAnalysis.isRegisteredClass(insertedClass)) {
        // Not likely happen but not invalid
        logger.warn("Not found {} in reactiveMap", insertedClass);
        return;
    }
    // property based link
    List<InsertedProperty> insertedProperties = action.getInsertedProperties();
    for (InsertedProperty insertedProperty : insertedProperties) {
        String property = insertedProperty.getProperty();
        for (AnalyzedRule reactedRule : graphAnalysis.getRulesReactiveTo(insertedClass, property)) {
            List<Pattern> patterns = reactedRule.getRule().getLhs().getPatterns().stream().filter(pattern -> pattern.getPatternClass() == insertedClass).collect(Collectors.toList());
            for (Pattern pattern : patterns) {
                List<Constraint> constraints = pattern.getConstraints().stream().filter(constraint -> constraint.getProperty() != null && constraint.getProperty().equals(property)).collect(Collectors.toList());
                ReactivityType combinedLinkType = ReactivityType.UNKNOWN;
                if (constraints.isEmpty()) {
                    // This rule is reactive to the property but cannot find its constraint (e.g. [age > $a] non-literal constraint). It means UNKNOWN impact
                    combinedLinkType = ReactivityType.UNKNOWN;
                } else {
                    // If constraints contain at least one POSITIVE, we consider it's POSITIVE.
                    for (Constraint constraint : constraints) {
                        ReactivityType linkType = linkType(constraint, insertedProperty);
                        if (linkType == ReactivityType.POSITIVE) {
                            combinedLinkType = ReactivityType.POSITIVE;
                            break;
                        } else if (linkType == ReactivityType.NEGATIVE) {
                            // NEGATIVE is stronger than UNKNOWN (but may be configurable)
                            combinedLinkType = ReactivityType.NEGATIVE;
                        } else if (combinedLinkType == ReactivityType.NEGATIVE && linkType == ReactivityType.UNKNOWN) {
                        // Don't overwrite with UNKNOWN
                        } else {
                            // UNKNOWN
                            combinedLinkType = linkType;
                        }
                    }
                }
                if (combinedLinkType == ReactivityType.NEGATIVE) {
                    // TODO: handle "exists" case
                    continue;
                }
                if (combinedLinkType == ReactivityType.POSITIVE && !pattern.isPositive()) {
                    // POSITIVE insert in not() means NEGATIVE
                    combinedLinkType = combinedLinkType.negate();
                }
                Node target = graphAnalysis.getNode(fqdn(pkgName, reactedRule.getRule().getName()));
                linkNodesIfExpected(source, target, combinedLinkType);
            }
        }
    }
    // class based link
    for (AnalyzedRule reactedRule : graphAnalysis.getRulesReactiveToWithoutProperty(insertedClass)) {
        Node target = graphAnalysis.getNode(fqdn(pkgName, reactedRule.getRule().getName()));
        linkNodesIfExpected(source, target, reactedRule.getReactivityType());
    }
}