Examples with AndDescr org.drools.drl.ast.descr.AndDescr used on opensource projects

Example 56 with AndDescr

use of org.drools.drl.ast.descr.AndDescr in project drools by kiegroup.

the class KnowledgeBuilderTest method testPredicate.

@Test
public void testPredicate() throws Exception {
    final KnowledgeBuilderImpl builder = new KnowledgeBuilderImpl();
    final PackageDescr packageDescr = new PackageDescr("p1");
    final RuleDescr ruleDescr = new RuleDescr("rule-1");
    packageDescr.addRule(ruleDescr);
    final AndDescr lhs = new AndDescr();
    ruleDescr.setLhs(lhs);
    final PatternDescr pattern = new PatternDescr(Cheese.class.getName(), "stilton");
    lhs.addDescr(pattern);
    final BindingDescr fieldBindingDescr = new BindingDescr("x", "price");
    pattern.addConstraint(fieldBindingDescr);
    final BindingDescr fieldBindingDescr2 = new BindingDescr("y", "price");
    pattern.addConstraint(fieldBindingDescr2);
    packageDescr.addGlobal(new GlobalDescr("map", "java.util.Map"));
    final ExprConstraintDescr predicate = new ExprConstraintDescr("eval(( ( Integer )map.get( new Integer(x) )).intValue() == y)");
    pattern.addConstraint(predicate);
    ruleDescr.setConsequence("update(stilton);");
    builder.addPackage(packageDescr);
    assertLength(0, builder.getErrors().getErrors());
}

Example 57 with AndDescr

use of org.drools.drl.ast.descr.AndDescr in project drools by kiegroup.

the class KnowledgeBuilderTest method testDuplicateDeclaration.

// TODO we now allow bindings on declarations, so update the test for this
@Test
// TODO we now allow bindings on declarations, so update the test for this
@Ignore
public void testDuplicateDeclaration() {
    final KnowledgeBuilderImpl builder = new KnowledgeBuilderImpl();
    final PackageDescr packageDescr = new PackageDescr("p1");
    final RuleDescr ruleDescr = new RuleDescr("rule-1");
    packageDescr.addRule(ruleDescr);
    final AndDescr lhs = new AndDescr();
    ruleDescr.setLhs(lhs);
    final PatternDescr pattern1 = new PatternDescr(Cheese.class.getName());
    lhs.addDescr(pattern1);
    final BindingDescr fieldBindingDescr = new BindingDescr("$type", "type");
    final FieldConstraintDescr literalDescr = new FieldConstraintDescr("type");
    literalDescr.addRestriction(new LiteralRestrictionDescr("==", "stilton"));
    pattern1.addConstraint(fieldBindingDescr);
    pattern1.addConstraint(literalDescr);
    final PatternDescr pattern2 = new PatternDescr(Cheese.class.getName());
    lhs.addDescr(pattern2);
    pattern2.addConstraint(fieldBindingDescr);
    ruleDescr.setConsequence("update(stilton);");
    builder.addPackage(packageDescr);
    assertLength(2, builder.getErrors().getErrors());
}

Example 58 with AndDescr

use of org.drools.drl.ast.descr.AndDescr in project drools by kiegroup.

the class KnowledgeBuilderTest method createReturnValueRule.

private void createReturnValueRule(final PackageDescr packageDescr, final String expression) {
    final RuleDescr ruleDescr = new RuleDescr("rule-1");
    packageDescr.addRule(ruleDescr);
    final AndDescr lhs = new AndDescr();
    ruleDescr.setLhs(lhs);
    final PatternDescr pattern = new PatternDescr(Cheese.class.getName(), "stilton");
    lhs.addDescr(pattern);
    BindingDescr fieldBindingDescr = new BindingDescr("x", "price");
    pattern.addConstraint(fieldBindingDescr);
    fieldBindingDescr = new BindingDescr("y", "price");
    pattern.addConstraint(fieldBindingDescr);
    packageDescr.addGlobal(new GlobalDescr("map", "java.util.Map"));
    pattern.addConstraint(new ExprConstraintDescr("price == (" + expression + ")"));
    ruleDescr.setConsequence("update(stilton);");
}

Example 59 with AndDescr

use of org.drools.drl.ast.descr.AndDescr in project drools by kiegroup.

the class KnowledgeBuilderTest method testAnd.

@Test
public void testAnd() throws Exception {
    final KnowledgeBuilderImpl builder = new KnowledgeBuilderImpl();
    final RuleImpl rule = createRule(new AndDescr(), builder, "update(stilton);");
    assertLength(0, builder.getErrors().getErrors());
    final GroupElement lhs = rule.getLhs();
    assertLength(1, lhs.getChildren());
    final GroupElement and = (GroupElement) lhs.getChildren().get(0);
    assertLength(1, and.getChildren());
    final Pattern pattern = (Pattern) and.getChildren().get(0);
}

Example 60 with AndDescr

use of org.drools.drl.ast.descr.AndDescr in project drools by kiegroup.

the class DRL6Parser method lhsAnd.

/**
 * lhsAnd := LEFT_PAREN AND lhsUnary+ RIGHT_PAREN
 *         | lhsUnary (AND lhsUnary)*
 *
 * @param ce
 * @throws org.antlr.runtime.RecognitionException
 */
private BaseDescr lhsAnd(final CEDescrBuilder<?, ?> ce, boolean allowOr) throws RecognitionException {
    BaseDescr result = null;
    if (input.LA(1) == DRL6Lexer.LEFT_PAREN && helper.validateLT(2, DroolsSoftKeywords.AND)) {
        // prefixed AND
        CEDescrBuilder<?, AndDescr> and = null;
        if (state.backtracking == 0) {
            and = ce.and();
            result = ce.getDescr();
            helper.start(and, CEDescrBuilder.class, null);
        }
        try {
            match(input, DRL6Lexer.LEFT_PAREN, null, null, DroolsEditorType.SYMBOL);
            if (state.failed)
                return null;
            match(input, DRL6Lexer.ID, DroolsSoftKeywords.AND, null, DroolsEditorType.KEYWORD);
            if (state.failed)
                return null;
            while (input.LA(1) == DRL6Lexer.AT) {
                // annotation*
                annotation(and);
                if (state.failed)
                    return null;
            }
            if (state.backtracking == 0) {
                helper.emit(Location.LOCATION_LHS_BEGIN_OF_CONDITION_AND_OR);
            }
            while (input.LA(1) != DRL6Lexer.RIGHT_PAREN) {
                lhsUnary(and, allowOr);
                if (state.failed)
                    return null;
            }
            match(input, DRL6Lexer.RIGHT_PAREN, null, null, DroolsEditorType.SYMBOL);
            if (state.failed)
                return null;
        } finally {
            if (state.backtracking == 0) {
                helper.end(CEDescrBuilder.class, and);
            }
        }
    } else {
        // infix AND
        // create an AND anyway, since if it is not an AND we remove it later
        CEDescrBuilder<?, AndDescr> and = null;
        if (state.backtracking == 0) {
            and = ce.and();
            result = and.getDescr();
            helper.start(and, CEDescrBuilder.class, null);
        }
        try {
            lhsUnary(and, allowOr);
            if (state.failed)
                return null;
            if (helper.validateIdentifierKey(DroolsSoftKeywords.AND) || input.LA(1) == DRL6Lexer.DOUBLE_AMPER) {
                while (helper.validateIdentifierKey(DroolsSoftKeywords.AND) || input.LA(1) == DRL6Lexer.DOUBLE_AMPER) {
                    if (input.LA(1) == DRL6Lexer.DOUBLE_AMPER) {
                        match(input, DRL6Lexer.DOUBLE_AMPER, null, null, DroolsEditorType.SYMBOL);
                    } else {
                        match(input, DRL6Lexer.ID, DroolsSoftKeywords.AND, null, DroolsEditorType.KEYWORD);
                    }
                    if (state.failed)
                        return null;
                    while (input.LA(1) == DRL6Lexer.AT) {
                        // annotation*
                        annotation(and);
                        if (state.failed)
                            return null;
                    }
                    if (state.backtracking == 0) {
                        helper.emit(Location.LOCATION_LHS_BEGIN_OF_CONDITION_AND_OR);
                    }
                    lhsUnary(and, allowOr);
                    if (state.failed)
                        return null;
                }
            } else {
                if (state.backtracking == 0 && and.getDescr().getDescrs().size() < 2) {
                    // if no AND present, then remove it and add children to parent
                    ((ConditionalElementDescr) ce.getDescr()).getDescrs().remove(and.getDescr());
                    for (BaseDescr base : and.getDescr().getDescrs()) {
                        ((ConditionalElementDescr) ce.getDescr()).addDescr(base);
                    }
                    result = ce.getDescr();
                }
            }
        } finally {
            if (state.backtracking == 0) {
                helper.end(CEDescrBuilder.class, and);
            }
        }
    }
    return result;
}