[stringtemplate-interest] misc

[Colin Bean]

Hi Brian,

Haven't tested your first example, but you might try something like:

 group test;
 null ::= ["x":, default:]
 test() ::= <<
 $
 ["field1", "field2", "field3", "field4", "field5", "field6"],
 ["label1", "label2", "label3", "label4", "label5", "label6"],
 [""      , ""      , null.x  , null.x  , null.x  , ""      ],
 ["40"    , "40"    , "40"    , "40"    , null.x  , "40"    ] :
 {name, label, required, size|
 $name$, $label$, $required$, $size$
 };null="null"$

That should correctly replace all null instances in the list; not sure
if having a group called "null" confuses ST in any way.

It's also possible to iterate over a list of maps:

You can do something like this with an anonymous template to print map items
(haven't run this, so let me know if it doesn't work as expected).

$yourList:{$it.propX$ $it.propY$};$

Should work the same any other way you apply a template to a list.

HTH, post code if you're still having trouble.

Colin



On 3/26/07, Brian Lewis <bsl04 at uark.edu> wrote:
> group test;
> null ::= ["x":, default:]
> test() ::= <<
> $
> ["field1", "field2", "field3", "field4", "field5", "field6"],
> ["label1", "label2", "label3", "label4", "label5", "label6"],
> [""      , ""      , null.x  , null.x  , null.x  , ""      ],
> ["40"    , "40"    , "40"    , "40"    , null.x  , "40"    ] :
> {name, label, required, size|
> $name$, $label$, $required:{};null="null"$, $size:{};null="null"$
> }
> $
> >>
>
> 1. What is the correct way to put null in a list?
>
> 2. The expected output was
> field1, label1, , 40
> field2, label2, , 40
> field3, label3, null, 40
> field4, label4, null, 40
> field5, label5, null, null
> field6, label6, , 40
>
> but the actual output was
> field1, label1, ,
> field2, label2, ,
> field3, label3, ,
> field4, label4, null,
> field5, label5, null,
> field6, label6, null, null
>
> Why?
>
> 3. I tried to iterate over a list of maps to save myself some repetitive
> coding, but it seems as though you can't have a list of maps. Is that
> correct?
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