[stringtemplate-interest] Issues using first and rest
Simon May
simon_may at bridleway.freeserve.co.uk
Thu Sep 28 10:19:01 PDT 2006
Hi I am currently using ST.net v2.3b5. A great piece of software by the way.
I have run into an issue with the following (extracts only shown). I am not
sure if this is a bug or I have not constructed the template correctly. I
have tried a number of variants. The attribute view.ColumnNames returns an
array of strings (names).
createview(view) ::= <<
AS
<view:selectlist();seperator=",\r\n">
>>
selectlist() ::= <<
<first(it.ColumnNames):{p | SELECT <p>}>
<rest(it.ColumnNames):{p | <p>}>
>>
Generates:
CREATE VIEW [dbo].[AccountEntryView](
AS
SELECT JournalType
CreditAmountDebitAmountReferenceClientKeyAccountNameCodeId
However
createview(view) ::= <<
AS
<first(view.ColumnNames):{p | SELECT <p>,}>
<rest(view.ColumnNames):{p | <p>};separator=",\r\n">
>>
Generates:
CREATE VIEW [dbo].[AccountEntryView](
AS
SELECT JournalType,
CreditAmount,
DebitAmount,
Reference,
ClientKey,
AccountName,
Code,
Which is the desired result. However would generate incorrect code if there
were only one column name. I would like to do similar things as the
generator developed but it seems to me that the first and rest operators are
not working as intended. Perhaps someone can help me get this right.
Simon
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