Package org.drools.lang.descr

Examples of org.drools.lang.descr.BindingDescr

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        lhs = new AndDescr();
        ruleDescr.setLhs( lhs );

        pattern = new PatternDescr( Cheese.class.getName() );
        lhs.addDescr( pattern );
        pattern.addBinding( new BindingDescr( "$type",
                                              "type" ) );

        pattern = new PatternDescr( "query1" );
        lhs.addDescr( pattern );
        pattern.addConstraint( new LiteralDescr( "bobba",
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        assertEquals( expected,
                      result );
        assertEquals( 1,
                      ctx.getBindings().size() );
        BindingDescr bind = ctx.getBindings().get( 0 );
        assertEquals( "$x",
                      bind.getVariable() );
        assertEquals( "property",
                      bind.getExpression() );
    }
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        assertEquals( expected,
                      result );
        assertEquals( 3,
                      ctx.getBindings().size() );
        BindingDescr bind = ctx.getBindings().get( 0 );
        assertEquals( "$a",
                      bind.getVariable() );
        assertEquals( "a",
                      bind.getExpression() );
        bind = ctx.getBindings().get( 1 );
        assertEquals( "$b",
                      bind.getVariable() );
        assertEquals( "b[10].prop",
                      bind.getExpression() );
        bind = ctx.getBindings().get( 2 );
        assertEquals( "$x",
                      bind.getVariable() );
        assertEquals( "someMethod(10)",
                      bind.getExpression() );
    }
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        assertEquals( expected,
                      result );
        assertEquals( 1,
                      ctx.getBindings().size() );
        BindingDescr bind = ctx.getBindings().get( 0 );
        assertEquals( "$x",
                      bind.getVariable() );
        assertEquals( "age",
                      bind.getExpression() );
    }
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        assertEquals( expected,
                      result );
        assertEquals( 1,
                      ctx.getBindings().size() );
        BindingDescr bind = ctx.getBindings().get( 0 );
        assertEquals( "$x",
                      bind.getVariable() );
        assertEquals( "age",
                      bind.getExpression() );
    }
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        assertEquals( expected,
                      result );
        assertEquals( 1,
                      ctx.getBindings().size() );
        BindingDescr bind = ctx.getBindings().get( 0 );
        assertEquals( "$x",
                      bind.getVariable() );
        assertEquals( "age",
                      bind.getExpression() );
    }
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        MVELDumper.MVELDumperContext mvelCtx = new MVELDumper.MVELDumperContext().setRuleContext(context);
        for ( BaseDescr b : patternDescr.getDescrs() ) {
            String expression;
            boolean isPositional = false;
            if ( b instanceof BindingDescr ) {
                BindingDescr bind = (BindingDescr) b;
                expression = bind.getVariable() + (bind.isUnification() ? " := " : " : ") + bind.getExpression();
            } else if ( b instanceof ExprConstraintDescr ) {
                ExprConstraintDescr descr = (ExprConstraintDescr) b;
                expression = descr.getExpression();
                isPositional = descr.getType() == ExprConstraintDescr.Type.POSITIONAL;
            } else {
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            boolean isSimpleIdentifier = !expr.equals("true") && !expr.equals("false") &&
                                         !expr.equals("null") && expr.matches("[a-zA-Z_\\$][a-zA-Z_\\$0-9]*");

            if ( isSimpleIdentifier ) {
                // create a binding
                BindingDescr binder = new BindingDescr();
                binder.setUnification( true );
                binder.setExpression( field.getName() );
                binder.setVariable( descr.getExpression() );
                buildRuleBindings( context,
                                   patternDescr,
                                   pattern,
                                   binder );
            } else {
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        if ( relDescr.getRight() instanceof AtomicExprDescr ) {
            AtomicExprDescr rdescr = ((AtomicExprDescr) relDescr.getRight());
            value2 = rdescr.getRewrittenExpression().trim();
            usesThisRef = "this".equals( value2 ) || value2.startsWith( "this." );
        } else {
            BindingDescr rdescr = ((BindingDescr) relDescr.getRight());
            value2 = rdescr.getExpression().trim();
            usesThisRef = "this".equals( value2 ) || value2.startsWith( "this." );
        }
        if ( relDescr.getLeft() instanceof AtomicExprDescr ) {
            AtomicExprDescr ldescr = (AtomicExprDescr) relDescr.getLeft();
            value1 = ldescr.getRewrittenExpression();
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    protected static Declaration createDeclarationObject( final RuleBuildContext context,
                                                 final String identifier,
                                                 final String expr,
                                                 final Pattern pattern ) {
        final BindingDescr implicitBinding = new BindingDescr( identifier,
                                                               expr );

        final Declaration declaration = new Declaration( identifier,
                                                         null,
                                                         pattern,
                                                         true );

        InternalReadAccessor extractor = getFieldReadAccessor( context,
                                                               implicitBinding,
                                                               pattern.getObjectType(),
                                                               implicitBinding.getExpression(),
                                                               declaration,
                                                               false );

        if ( extractor == null ) {
            return null;
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Related Classes of org.drools.lang.descr.BindingDescr

  • org.drools.clips.LhsClpParserTest
  • org.drools.compiler.PackageBuilderTest
  • org.drools.compiler.QueryBuilderTest
  • org.drools.compiler.xml.rules.FieldBindingHandler
  • org.drools.lang.api.impl.PatternDescrBuilderImpl
  • org.drools.lang.api.PatternDescrBuilderImpl
  • org.drools.lang.DRL5Expressions
  • org.drools.lang.DRL6Expressions
  • org.drools.lang.DRLExpressions
  • org.drools.lang.DRLExprParserTest
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