Examples with Predicate2 org.drools.model.functions.Predicate2 used on opensource projects

Example 1 with Predicate2

use of org.drools.model.functions.Predicate2 in project drools by kiegroup.

the class ToStringTest method testToString.

/**
 * Users may depend on seeing {@link Rule#toString()} in log files giving useful information, in order to understand
 * the rules that are being created. The format is not required to be backwards compatible - this test merely checks
 * that it does not change unknowingly.
 */
@Test
public void testToString() {
    Variable<Person> markV = declarationOf(Person.class);
    Variable<Integer> markAge = declarationOf(Integer.class);
    Variable<Person> olderV = declarationOf(Person.class);
    Variable<Double> resultAvg = declarationOf(Double.class);
    Variable<Integer> age = declarationOf(Integer.class);
    String person = "Mark";
    Function1<Person, String> nameGetter = Person::getName;
    Function1<Person, Integer> ageGetter = Person::getAge;
    Predicate1<Person> markPredicate = p -> p.getName().equals(person);
    PatternDSL.PatternDef<Person> pattern1 = pattern(markV).expr("exprA", markPredicate, alphaIndexedBy(String.class, Index.ConstraintType.EQUAL, 0, nameGetter, person)).bind(markAge, ageGetter);
    Predicate1<Person> notMarkPredicate = markPredicate.negate();
    Predicate2<Person, Integer> agePredicate = (p1, someAge) -> p1.getAge() > someAge;
    Function1<Integer, Integer> ageCaster = int.class::cast;
    PatternDSL.PatternDef<Person> pattern2 = pattern(olderV).expr("exprB", notMarkPredicate, alphaIndexedBy(String.class, Index.ConstraintType.NOT_EQUAL, 1, nameGetter, person)).expr("exprC", markAge, agePredicate, betaIndexedBy(int.class, Index.ConstraintType.GREATER_THAN, 0, ageGetter, ageCaster));
    AccumulateFunction<AverageAccumulateFunction.AverageData> f = new AverageAccumulateFunction();
    Supplier<AccumulateFunction<AverageAccumulateFunction.AverageData>> accumulateSupplier = () -> f;
    org.drools.model.functions.accumulate.AccumulateFunction actualAccumulate = accFunction(accumulateSupplier, age);
    ExprViewItem<Person> accumulate = accumulate(pattern(olderV).expr("exprD", notMarkPredicate).bind(age, ageGetter), actualAccumulate.as(resultAvg));
    Rule rule = rule("beta").build(pattern1, pattern2, accumulate, on(olderV, markV).execute((drools, p1, p2) -> drools.insert(p1.getName() + " is older than " + p2.getName())));
    String pattern1toString = "PatternImpl (type: PATTERN, inputVars: null, " + "outputVar: " + markV + ", " + "constraint: Constraint for 'exprA' (index: AlphaIndex #0 (EQUAL, left: lambda " + System.identityHashCode(nameGetter) + ", right: " + person + ")))";
    String pattern2toString = "PatternImpl (type: PATTERN, inputVars: null, " + "outputVar: " + olderV + ", " + "constraint: MultipleConstraints (constraints: [" + "Constraint for 'exprB' (index: AlphaIndex #1 (NOT_EQUAL, left: lambda " + System.identityHashCode(nameGetter) + ", right: " + person + ")), " + "Constraint for 'exprC' (index: BetaIndex #0 (GREATER_THAN, left: lambda " + System.identityHashCode(ageGetter) + ", right: lambda " + System.identityHashCode(ageCaster) + "))]))";
    String accumulatePatternToString = "PatternImpl (type: PATTERN, inputVars: null, " + "outputVar: " + olderV + ", " + "constraint: Constraint for 'exprD' (index: null))";
    String accumulateToString = "AccumulatePatternImpl (functions: [" + actualAccumulate + "], " + "condition: " + accumulatePatternToString + ", " + "pattern: " + accumulatePatternToString + ")";
    String consequenceToString = "ConsequenceImpl (variables: [" + olderV + ", " + markV + "], language: java, breaking: false)";
    String expectedToString = "Rule: defaultpkg.beta (" + "view: CompositePatterns of AND (vars: null, patterns: [" + pattern1toString + ", " + pattern2toString + ", " + accumulateToString + ", NamedConsequenceImpl 'default' (breaking: false)], " + "consequences: {default=" + consequenceToString + "}), consequences: {default=" + consequenceToString + "})";
    Assertions.assertThat(rule).hasToString(expectedToString);
}