Package org.drools.lang.descr

Examples of org.drools.lang.descr.PatternDescr.addConstraint()

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        pattern = new PatternDescr( "query1" );
        lhs.addDescr( pattern );
        pattern.addConstraint( new LiteralDescr( "bobba",
                                                 LiteralDescr.TYPE_STRING ) );
        pattern.addConstraint( new VariableDescr( "$age" ) );
        pattern.addConstraint( new VariableDescr( "$type" ) );
        ruleDescr.setConsequence( "System.out.println(\"age: \" + $age);" );
       
        builder.addPackage( packageDescr );
        assertLength( 0,
                      builder.getErrors().getErrors() );
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        final FieldConstraintDescr literalDescr = new FieldConstraintDescr( "type" );
        literalDescr.addRestriction( new VariableRestrictionDescr( "==",
                                                                   "$type" ) );

        pattern.addConstraint( literalDescr );

        builder.addPackage( packageDescr );

        assertLength( 0,
                      builder.getErrors().getErrors() );
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        if ( parent instanceof ConditionalElementDescr ) {
            final ConditionalElementDescr parentDescr = (ConditionalElementDescr) parent;
            parentDescr.addDescr( orDescr );
        } else if ( parent instanceof PatternDescr ) {
            final PatternDescr parentDescr = (PatternDescr) parent;
            parentDescr.addConstraint( orDescr );
        }

        return null;
    }
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        pattern.addBinding( fieldBindingDescr );

        packageDescr.addGlobal( new GlobalDescr( "map",
                                                 "java.util.Map" ) );

        pattern.addConstraint( new ExprConstraintDescr("price == x") );

        // There is no m this should produce errors.
        ruleDescr.setConsequence( "update(m);" );

        builder.addPackage( packageDescr );
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        final PatternDescr pattern = new PatternDescr( Cheese.class.getName(),
                                                       "stilton" );
        lhs.addDescr( pattern );

        pattern.addConstraint( new ExprConstraintDescr( "type == 'stilton'" ) );

        ruleDescr.setConsequence( "update(stilton);" );

        builder.addPackage( packageDescr );
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        pattern.addBinding( fieldBindingDescr );

        packageDescr.addGlobal( new GlobalDescr( "map",
                                                 "java.util.Map" ) );

        pattern.addConstraint( new ExprConstraintDescr("price == (( (Integer) map.get( new Integer( x )) ).intValue() * y)") );

        ruleDescr.setConsequence( "update(stilton);" );

        builder.addPackage( packageDescr );

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        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 );
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        final FieldConstraintDescr literalDescr = new FieldConstraintDescr( "type" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  null ) );

        patternDescr.addConstraint( literalDescr );

        ruleDescr.setConsequence( "" );

        builder.addPackage( packageDescr );
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        PatternDescr patternDescr = new PatternDescr( Cheese.class.getName(),
                                                      "stilton" );
        FieldConstraintDescr literalDescr = new FieldConstraintDescr( "type" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  null ) );
        patternDescr.addConstraint( literalDescr );
        ruleDescr.setConsequence( "" );

        ruleDescr = new RuleDescr( "rule-1" );
        ruleDescr.setLocation( 42,
                               43 );
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        patternDescr = new PatternDescr( Cheese.class.getName(),
                                         "stilton" );
        literalDescr = new FieldConstraintDescr( "type" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "!=",
                                                                  null ) );
        patternDescr.addConstraint( literalDescr );
        ruleDescr.setConsequence( "" );

        ruleDescr = new RuleDescr( "rule-2" );
        ruleDescr.setLocation( 42,
                               43 );
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