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power designer逆向工程生成PDM时的列注释(ColumnComment)解决方案

时间:2011-03-06 01:04 点击:2001次 字体:[ ]




在用powerdesigner逆向工程生成PDM时,列注释(ColumnComment)始终无法生成,历经数小时的探索,找到一个折衷的方法,现分享如下。并希望有高手指点更好的方法。

邀月使用的是Powerdesigner 15.2,数据库为SQL Server 2008 r2

方法如下:

1、在PowerDesigner界面-File-Reverse Engineer-Database,然后选择一个DBMS,我这里选取一个由系统默认的SQL Server 2008 DBMS修改而来的SQL_2008_MyDefine。

power designer逆向工程生成PDM时的列注释(ColumnComment)解决方案_www.fengfly.com

选好odbc,输入正确的连接串,选择数据库及表。

power designer逆向工程生成PDM时的列注释(ColumnComment)解决方案_www.fengfly.com

生成效果:Name为英文,且Comment列为空。

power designer逆向工程生成PDM时的列注释(ColumnComment)解决方案_www.fengfly.com

而我们希望的是Name列为中文,Comment为中文。

查看了下在线帮助,发现在SQL_2008_MyDefine::Script\Objects\Column\SqlListQuery下的Value值如下:

 power designer逆向工程生成PDM时的列注释(ColumnComment)解决方案_www.fengfly.com

{OWNER, TABLE, S, COLUMN, DTTPCODE, LENGTH, SIZE, PREC, COMPUTE, NOTNULL, IDENTITY, DOMAIN, DEFAULT, ExtIdentitySeedInc, COMMENT, ExtCollation, ExtIdtNotForReplication, ExtDeftConstName, Sparse, FileStream, ExtRowGuidCol}

select
u.name,
o.name,
c.column_id,
c.name,
case when c.system_type_id in (165, 167, 231) and c.max_length = -1 then t.name + '(Max)' else t.name end,
c.
precision,
case (c.max_length) when -1 then 0 else case when c.system_type_id in (99, 231, 239) then (c.max_length/2) else (c.max_length) end end as colnA,
c.scale,
case(c.is_computed) when 1 then convert(varchar(8000), (select z.definition from [%CATALOG%.]sys.computed_columns z where z.object_id = c.object_id and z.column_id = c.column_id)) else '' end as colnB,
case(c.is_nullable) when 1 then 'NULL' else 'NOTNULL' end,
case(c.is_identity) when 1 then 'identity' else '' end,
case when(c.user_type_id <> c.system_type_id) then (select d.name from [%CATALOG%.]sys.types d where d.user_type_id = c.user_type_id) else '' end as colnC,
convert(varchar(8000), d.definition),
case (c.is_identity) when 1 then convert(varchar, i.seed_value) + ', ' + convert(varchar, i.increment_value) else '' end as colnD,
(
select convert(varchar(8000), value) from ::fn_listextendedproperty(NULL, 'user', u.name, 'table', o.name, 'column', c.name) where name = 'MS_Description') as colnE,
c.collation_name,
case (i.is_not_for_replication) when 1 then 'true' else 'false' end,
d.name,
case(c.is_sparse) when 1 then 'true' else 'false' end,
case(c.is_filestream) when 1 then 'true' else 'false' end,
case(c.is_rowguidcol) when 1 then 'true' else 'false' end
from
[%CATALOG%.]sys.columns c
join [%CATALOG%.]sys.objects o on (o.object_id = c.object_id)
join [%CATALOG%.]sys.schemas u on (u.schema_id = o.schema_id)
join [%CATALOG%.]sys.types t on (t.user_type_id = c.system_type_id)
left outer join [%CATALOG%.]sys.identity_columns i on (i.object_id = c.object_id and i.column_id = c.column_id)
left outer join [%CATALOG%.]sys.default_constraints d on (d.object_id = c.default_object_id)
where
o.type
in ('U', 'S', 'V')
[ and u.name = %.q:OWNER%]
[ and o.name=%.q:TABLE%]
order by 1, 2, 3

注意该值中上面是PDM对应的列名,下面是从SQL数据库中取到的相关属性值。其中“

(select convert(varchar(8000), value) from
::fn_listextendedproperty(
NULL, 'user', u.name, 'table', o.name, 'column', c.name)
where name = 'MS_Description') as colnE,

”是可以取到Comment值的,可是生成的PDM为什么Comment列为空呢?尝试修改该SQL语句,将语句提取出来,也可以获取结果:

 
select
u.name,
o.name,
c.column_id,
c.name,
case when c.system_type_id in (165, 167, 231) and c.max_length = -1 then t.name + '(Max)' else t.name end,
c.
precision,
case (c.max_length) when -1 then 0 else case when c.system_type_id in (99, 231, 239) then (c.max_length/2) else (c.max_length) end end as colnA,
c.scale,
case(c.is_computed) when 1 then convert(varchar(8000), (select z.definition from sys.computed_columns z where z.object_id = c.object_id and z.column_id = c.column_id)) else '' end as colnB,
case(c.is_nullable) when 1 then 'NULL' else 'NOTNULL' end,
case(c.is_identity) when 1 then 'identity' else '' end,
case when(c.user_type_id <> c.system_type_id) then (select d.name from sys.types d where d.user_type_id = c.user_type_id) else '' end as colnC,
convert(varchar(8000), d.definition),
case (c.is_identity) when 1 then convert(varchar, i.seed_value) + ', ' + convert(varchar, i.increment_value) else '' end as colnD,
(
select convert(varchar(8000), value) from ::fn_listextendedproperty(NULL, 'user', u.name, 'table', o.name, 'column', c.name) where name = 'MS_Description') as colnE,
c.collation_name,
case (i.is_not_for_replication) when 1 then 'true' else 'false' end,
d.name,
case(c.is_sparse) when 1 then 'true' else 'false' end,
case(c.is_filestream) when 1 then 'true' else 'false' end,
case(c.is_rowguidcol) when 1 then 'true' else 'false' end
from
sys.columns c
join sys.objects o on (o.object_id = c.object_id)
join sys.schemas u on (u.schema_id = o.schema_id)
join sys.types t on (t.user_type_id = c.system_type_id)
left outer join sys.identity_columns i on (i.object_id = c.object_id and i.column_id = c.column_id)
left outer join sys.default_constraints d on (d.object_id = c.default_object_id)
where
o.type
in ('U', 'S', 'V')
and u.name =N'dbo'
and o.name=N'Age'
order by 1, 2, 3

后来发现,直接用生成表的SQL,而不是用数据库就可以生成注释。如下图:

power designer逆向工程生成PDM时的列注释(ColumnComment)解决方案_www.fengfly.com

但字段类型全乱了。

power designer逆向工程生成PDM时的列注释(ColumnComment)解决方案_www.fengfly.com

难道Powerdesigner真的这么弱吗?google了一下,看到官方文档:

http://manuals.sybase.com/onlinebooks/group-pd/pdd1100e/advanced/@Generic__BookTextView/1302;hf=0

里面有关于SqlListQuery的解释。

再看看上面的SQL语句,突然想到,既然可以在SQL查询出结果,那么出错一定在生成PDM的时候,

在SQL_2008_MyDefine::Script\Objects\Column中看到这么一段:

The following system variables are available:
(parent
table items are also available for columns)
"COLNNAME"
// name of the column
"COLNCODE"
// code of the column

将上面的Value值中上面的一行中“Comment”修改为“COLNNAME”会如何?即

{OWNER, TABLE, S, COLUMN, DTTPCODE, LENGTH, SIZE, PREC, COMPUTE, NOTNULL, IDENTITY, DOMAIN, DEFAULT, ExtIdentitySeedInc, COMMENT, ExtCollation, ExtIdtNotForReplication, ExtDeftConstName, Sparse, FileStream, ExtRowGuidCol}改为

{OWNER, TABLE, S, COLUMN, DTTPCODE, LENGTH, SIZE, PREC, COMPUTE, NOTNULL, IDENTITY, DOMAIN, DEFAULT, ExtIdentitySeedInc, COLNNAME, ExtCollation, ExtIdtNotForReplication, ExtDeftConstName, Sparse, FileStream, ExtRowGuidCol}

结果生成如下:

power designer逆向工程生成PDM时的列注释(ColumnComment)解决方案_www.fengfly.com

同理将SQL_2008_MyDefine::Script\Objects\Table\SqlListQuery下的Value的第一行中

{OWNER, TABLE, TABLE_TYPE, Comment}的Comment改为{OWNER, TABLE, TABLE_TYPE, TNAME}

生成结果,如下:

 power designer逆向工程生成PDM时的列注释(ColumnComment)解决方案_www.fengfly.com

至此,我的基本目的,已经达到了,虽然没有直接生成Comment列,但可以通过以下vbs脚本,从Name列生成Comment列:

'代码一:将name生成comment的脚本

Option Explicit
ValidationMode
= True
InteractiveMode
= im_Batch
Dim mdl 'the current model
'
get the current active model
Set mdl = ActiveModel
If (mdl Is Nothing) Then
MsgBox "There is no current Model"
ElseIf Not mdl.IsKindOf(PdPDM.cls_Model) Then
MsgBox "The current model is not an Physical Data model."
Else
ProcessFolder mdl
End If
'This routine copy name into code for each table, each column and each view
'
of the current folder
Private sub ProcessFolder(folder)
Dim Tab 'running table
for each Tab in folder.tables
if not tab.isShortcut then
tab.comment
= tab.name
Dim col 'running column
for each col in tab.columns
col.comment
= col.name
next
end if
next
Dim view 'running view
for each view in folder.Views
if not view.isShortcut then
view.comment
= view.name
end if
next
'go into the sub-packages
Dim f 'running folder
For Each f In folder.Packages
if not f.IsShortcut then
ProcessFolder f
end if
Next
end sub

仔细思索:为什么从SQL生成的脚本有Comment,可是到生成PDM时为什么没有转化成功呢?是否Comment名称不对应?

于是将原来的COMMENT加上COLNNAME,同时在下面的SQL语句中增加一列与COMMENT相同的值:

(select convert(varchar(8000), value) from ::fn_listextendedproperty(NULL, 'user', u.name, 'table', o.name, 'column', c.name) where name = 'MS_Description') as colnF,

如下图:

power designer逆向工程生成PDM时的列注释(ColumnComment)解决方案_www.fengfly.com

这样,Name列和Comment同时生成,终于OK!

power designer逆向工程生成PDM时的列注释(ColumnComment)解决方案_www.fengfly.com 



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标签: 列注释 PDM 逆向工程 Power designer ColumnComment
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