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

Example 51 with ConstraintConnectiveDescr

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

the class DRLExprParserTest method testSimpleExpression.

@Test
public void testSimpleExpression() throws Exception {
    String source = "a > b";
    ConstraintConnectiveDescr result = parser.parse(source);
    assertFalse(parser.getErrors().toString(), parser.hasErrors());
    assertEquals(ConnectiveType.AND, result.getConnective());
    assertEquals(1, result.getDescrs().size());
    RelationalExprDescr expr = (RelationalExprDescr) result.getDescrs().get(0);
    assertEquals(">", expr.getOperator());
    AtomicExprDescr left = (AtomicExprDescr) expr.getLeft();
    AtomicExprDescr right = (AtomicExprDescr) expr.getRight();
    assertEquals("a", left.getExpression());
    assertEquals("b", right.getExpression());
}

Example 52 with ConstraintConnectiveDescr

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

the class DescrDumperTest method testDumpMatches.

@Test
public void testDumpMatches() throws Exception {
    String input = "type.toString matches \"something\\swith\\tsingle escapes\"";
    String expected = "type.toString ~= \"something\\swith\\tsingle escapes\"";
    ConstraintConnectiveDescr descr = parse(input);
    String result = dumper.dump(descr);
    assertEquals(expected, result);
}

Example 53 with ConstraintConnectiveDescr

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

the class DescrDumperTest method testDump.

@Test
public void testDump() throws Exception {
    String input = "price > 10 && < 20 || == $val || == 30";
    String expected = "( price > 10 && price < 20 || price == $val || price == 30 )";
    ConstraintConnectiveDescr descr = parse(input);
    String result = dumper.dump(descr);
    assertEquals(expected, result);
}

Example 54 with ConstraintConnectiveDescr

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

the class DescrDumperTest method testDumpContains2.

@Test
public void testDumpContains2() throws Exception {
    String input = "list not contains \"b\"";
    String expected = "!( list contains \"b\" )";
    ConstraintConnectiveDescr descr = parse(input);
    String result = dumper.dump(descr);
    assertEquals(expected, result);
}

Example 55 with ConstraintConnectiveDescr

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

the class QueryElementBuilder method processBinding.

private void processBinding(RuleBuildContext context, BaseDescr descr, Declaration[] params, QueryArgument[] arguments, List<Declaration> requiredDeclarations, InternalReadAccessor arrayReader, Pattern pattern, BindingDescr bind) {
    Declaration declr = context.getDeclarationResolver().getDeclaration(bind.getVariable());
    if (declr != null) {
        // check right maps to a slot, otherwise we can't reverse this and should error
        int pos = getPos(bind.getExpression(), params);
        if (pos >= 0) {
            // slot exist, reverse and continue
            String slot = bind.getExpression();
            String var = bind.getVariable();
            bind.setVariable(slot);
            bind.setExpression(var);
        } else {
        // else error, we cannot find the slot to unify against
        }
    }
    // left does not already exist, is it a slot?
    int pos = getPos(bind.getVariable(), params);
    if (pos >= 0) {
        // it's an input on a slot, is the input using bindings?
        declr = context.getDeclarationResolver().getDeclaration(bind.getExpression());
        if (declr != null) {
            requiredDeclarations.add(declr);
            arguments[pos] = new QueryArgument.Declr(declr);
        } else {
            // it must be a literal/expression
            // it's an expression and thus an input
            DrlExprParser parser = new DrlExprParser(context.getConfiguration().getLanguageLevel());
            ConstraintConnectiveDescr bresult = parser.parse(bind.getExpression());
            if (parser.hasErrors()) {
                for (DroolsParserException error : parser.getErrors()) {
                    context.addError(new DescrBuildError(context.getParentDescr(), descr, null, "Unable to parser pattern expression:\n" + error.getMessage()));
                }
                return;
            }
            arguments[pos] = getLiteralQueryArgument(context, descr, bresult);
        }
    } else {
        // this is creating a new output binding
        // we know it doesn't exist, as we already checked for left == var
        pos = getPos(bind.getExpression(), params);
        if (pos < 0) {
            // error this must be a binding on a slot
            context.addError(new DescrBuildError(context.getParentDescr(), descr, null, "named argument does not exist:\n" + bind.getExpression()));
            return;
        }
        arguments[pos] = getVariableQueryArgument(arrayReader, params, pos, pattern, bind.getVariable());
    }
}