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我正在制作一个 C# 程序,它将能够动态读取用 COBOL 编写的 IBM HOST Copybook 并从中生成一个 SQL 表。生成表后,我可以将文件上传到我的程序中,它将读取、从 IMB-37 转换并将文件插入到该 sql 表中。到目前为止,我几乎可以处理任何事情,尽管我遇到了 REDEFINES 的一些问题。

例如:

           10   SOME-FIELD        PIC 9(3)      COMP-3.     SCRRB205
4117       10   SOME-OTHER-FIELD REDEFINES                  3041-17
4117              SOME-FIELD      PIC X(2).                 3041-17

我知道在这种情况下重新定义取代了它上面的字段,尽管我不明白编译器如何知道它是否应该在上面使用重新定义。我假设在这种情况下,这是因为第一个是数字,而第二个是字符,尽管在下面的示例中它们都使用字符。

 05  STREET-ADDRESS.
       10  ADDRESS-LINE-1               PIC X(20).
       10  ADDRESS-LINE-2               PIC X(20).
   05  PO-BOX REDEFINES STREET-ADDRESS  PIC X(40). 

我尝试忽略重新定义,因为它总是占用相同数量的空间,但是在原始字段被打包而重新定义的字段不是我需要知道何时解包字段的情况下。

对此的任何帮助都会很棒!

4

2 回答 2

10

我也许可以帮助你,因为 2 年前我已经完成了你现在正在做的事情。

我必须设计一个 MySQL 数据仓库,包括 ETL 系统,完全基于在 Linux 上运行的RM COBOL ERP 应用程序的文件。该应用程序有 600 多个文件,目前尚不清楚其中有多少最终会进入数据库。大多数重要文件都在 COMP 字段上进行了索引,以使其更难,其中一个明显的要求是文件及其索引键之间的所有关系都可以在数据库上重现。所以我可能需要每个文件的每个字段。

给出文件的数量,手动和一个一个地处理所有文件是没有问题的。

对于我的问题,我只看到了一个实用的解决方案:应用自动编程。即编写一个可以生成程序的程序,仅来自一个来源:cobol 抄写本。

我对允许使用的技术有一些限制(由客户设置)。我最终得到了一个 VB.NET 应用程序,该应用程序将 COBOL 字帖作为输入,并且:

  1. 生成 COBOL 程序,通过读取原始索引文件并将记录写入顺序文本文件,将数据转换为可利用的数据。
  2. 使用将这些数据文件从 MS Access 导入 MySQL 所需的所有代码生成 VBA 模块(包括 CREATE TABLE 和索引)

在项目开始时,我遇到了和你现在完全相同的问题,尤其是那些该死的 REDEFINES。我发现列出和编码所有抄写本可能性的任务,如果不是不可能的话,至少是危险的。所以我研究了另一种方式,发现了这个:

CB2XML

COBOL copybook 到 XML 转换器SourceForge

这为我节省了数周的字帖解析和解释工作。它可以解析 COBOL 字帖,将它们更改为 XML 文件,完美地描述所有 PICTURE 并具有许多有用的属性,例如长度类型。它完全支持 COBOL'86 标准。

带有发票文件的示例(法语中的Facture

000001 FD  FACTURE.                                                     
000006 01  REC-FACTURE.                                                 
000011     03  FS1                  PIC X.                              
000016     03  FS2.                                                     
000021         05  FS2A            PIC 9.                               
               05  RFS2B           PIC X(8).
000026         05  FS2B REDEFINES RFS2B  PIC 9(8).
000031     03  FS3.                                                     
000036         05  FS3A            PIC 9.                               
000041         05  FS3B            PIC X(10).                            
000046     03  FS4.                                                     
000051         05  FS4A            PIC 99.                              
000056         05  FS4B            PIC 99.                              
000061         05  FS4C            PIC 99.                              
000066     03  FS5                 PIC X(5).                              
000071     03  FS6                 PIC X(20).                           
000076     03  FS7                 PIC 9.                               
000081     03  FS8                 PIC S9(9)V99    COMP-3.              
000086     03  FS9                 PIC S9(9)V99    COMP-3.              
000091     03  FS10                PIC 9.                               
000096     03  FS11                PIC S9(9)V99    COMP-3.              
000101     03  FS12                PIC S9(9)V99    COMP-3.              
000106     03  FS13                PIC S9(9)V99    COMP-3.              
000111     03  FS14-15 OCCURS 10.                                       
000116         05  FS14            PIC 9.                               
000121         05  FS15            PIC S9(9)V99    COMP-3.              
000126         05  FS16            PIC S9(9)V99    COMP-3.              
000131     03  FS17 OCCURS 10       PIC S9(9)V99    COMP-3.              
000136     03 FS18                 PIC 9(6).                            
000141     03  FS19                PIC 9.                               
000241     03  FILLER              PIC X.    

变成这样:

<copybook filename="FD8.COP.CLEAN">
    <item display-length="428" level="01" name="REC-FACTURE" position="1" storage-length="428">
        <item display-length="1" level="03" name="FS1" picture="X" position="1" storage-length="1"/>
        <item display-length="9" level="03" name="FS2" position="2" storage-length="9">
            <item display-length="1" level="05" name="FS2A" numeric="true" picture="9" position="2" storage-length="1"/>
            <item display-length="8" level="05" name="RFS2B" picture="X(8)" position="3" redefined="true" storage-length="8"/>
            <item display-length="8" level="05" name="FS2B" numeric="true" picture="9(8)" position="3" redefines="RFS2B" storage-length="8"/>
        </item>
        <item display-length="11" level="03" name="FS3" position="11" storage-length="11">
            <item display-length="1" level="05" name="FS3A" numeric="true" picture="9" position="11" storage-length="1"/>
            <item display-length="10" level="05" name="FS3B" picture="X(10)" position="12" storage-length="10"/>
        </item>
        <item display-length="6" level="03" name="FS4" position="22" storage-length="6">
            <item display-length="2" level="05" name="FS4A" numeric="true" picture="99" position="22" storage-length="2"/>
            <item display-length="2" level="05" name="FS4B" numeric="true" picture="99" position="24" storage-length="2"/>
            <item display-length="2" level="05" name="FS4C" numeric="true" picture="99" position="26" storage-length="2"/>
        </item>
        <item display-length="5" level="03" name="FS5" picture="X(5)" position="28" storage-length="5"/>
        <item display-length="20" level="03" name="FS6" picture="X(20)" position="33" storage-length="20"/>
        <item display-length="1" level="03" name="FS7" numeric="true" picture="9" position="53" storage-length="1"/>
        <item display-length="11" level="03" name="FS8" numeric="true" picture="S9(9)V99" position="54" scale="2" signed="true" storage-length="6" usage="computational-3"/>
        <item display-length="11" level="03" name="FS9" numeric="true" picture="S9(9)V99" position="60" scale="2" signed="true" storage-length="6" usage="computational-3"/>
        <item display-length="1" level="03" name="FS10" numeric="true" picture="9" position="66" storage-length="1"/>
        <item display-length="11" level="03" name="FS11" numeric="true" picture="S9(9)V99" position="67" scale="2" signed="true" storage-length="6" usage="computational-3"/>
        <item display-length="11" level="03" name="FS12" numeric="true" picture="S9(9)V99" position="73" scale="2" signed="true" storage-length="6" usage="computational-3"/>
        <item display-length="11" level="03" name="FS13" numeric="true" picture="S9(9)V99" position="79" scale="2" signed="true" storage-length="6" usage="computational-3"/>
        <item display-length="13" level="03" name="FS14-15" occurs="10" position="85" storage-length="13">
            <item display-length="1" level="05" name="FS14" numeric="true" picture="9" position="85" storage-length="1"/>
            <item display-length="11" level="05" name="FS15" numeric="true" picture="S9(9)V99" position="86" scale="2" signed="true" storage-length="6" usage="computational-3"/>
            <item display-length="11" level="05" name="FS16" numeric="true" picture="S9(9)V99" position="92" scale="2" signed="true" storage-length="6" usage="computational-3"/>
        </item>
        <item display-length="11" level="03" name="FS17" numeric="true" occurs="10" picture="S9(9)V99" position="215" scale="2" signed="true" storage-length="6" usage="computational-3"/>
        <item display-length="6" level="03" name="FS18" numeric="true" picture="9(6)" position="275" storage-length="6"/>
        <item display-length="1" level="03" name="FS19" numeric="true" picture="9" position="281" storage-length="1"/>

所有 XML 属性的列表

我会在这里偷懒,只是复制/粘贴我的 VB.NET 代码,有一条注释清楚地解释了每个属性

      For Each Attribute As Xml.XmlAttribute In itemNode.Attributes

            Select Case Attribute.Name

                Case "name" ' FIeld name

                Case "level" ' PICTURE level

                Case "numeric"  ' True if numeric data type

                Case "picture" ' COmplete PICTURE string

                Case "storage-length" ' Variable storage lenght

                Case "usage" ' If COMP field, give the original COMP type ("computational-x")

                Case "signed" ' true if PIC S...

                Case "scale" ' Give number of digits afeter decimal point

                Case "redefined" ' true if the field is redifined afterwards

                Case "redefines" ' If REDEFINES : give the name of the redefined field

                Case "occurs" ' give the number of occurences if it's an ARRAY

                Case "position" ' Give the line position in the original copybook

                Case "display-length" ' Give the display size

                Case "filename" ' Give the FD name

在这种 XML 结构的帮助下,我已经实现了所有目标,甚至更多。

生成的 COBOL 程序将索引文件(只能使用 RM cobol 运行时读取)转换为平面文件,处理每个字段,包括 ARRAYS 和 REDEFINES。

  • 对于 REDEFINES:我为“主”图片及其所有 REDEFINES 更改创建了一个字段,并且它们的类型与它们的 COBOL PICTURE 匹配
  • 对于数组,我为每个元素创建一个字段,以及一个包含整个数组“行”的巨大字段
  • 对于 COMPUTATIONAL 字段,我只是将原始 COMP 移动到完全相同的 DISPLAY PICTURE

并非所有字段在数据库中都有用途,但至少所有内容始终可用

使用上面的发票文件,SEQUENTIAL 文本文件字帖变成这样:

自动生成的 COBOL

  FILE SECTION. 

  * ----------------------------------------------------------- 
  * INPUT FILE                                                
       COPY "FD8.COP" . 

  * -----------------------------------------------------------
  * OUTPUT FILE
   FD FACTURE-DWH.
   01 REC-FACTURE-DWH.      
       03 FS1-DWH           PIC X.
       03 FS2-DWH           PIC X(9).
       03 FS2A-DWH           PIC 9.
       03 RFS2B-DWH           PIC X(8).
       03 FS2B-DWH           PIC 9(8).
       03 FS3-DWH           PIC X(11).
       03 FS3A-DWH           PIC 9.
       03 FS3B-DWH           PIC X(10).
       03 FS4-DWH           PIC X(6).
       03 FS4A-DWH           PIC 99.
       03 FS4B-DWH           PIC 99.
       03 FS4C-DWH           PIC 99.
       03 FS5-DWH           PIC X(5).
       03 FS6-DWH           PIC X(20).
       03 FS7-DWH           PIC 9.
       03 FS8-DWH           PIC -9(9)V99.
       03 FS9-DWH           PIC -9(9)V99.
       03 FS10-DWH           PIC 9.
       03 FS11-DWH           PIC -9(9)V99.
       03 FS12-DWH           PIC -9(9)V99.
       03 FS13-DWH           PIC -9(9)V99.
       03 FS14-15-1-DWH           PIC X(13).
       03 FS14-15-2-DWH           PIC X(13).
       03 FS14-15-3-DWH           PIC X(13).
       03 FS14-15-4-DWH           PIC X(13).
       03 FS14-15-5-DWH           PIC X(13).
       03 FS14-15-6-DWH           PIC X(13).
       03 FS14-15-7-DWH           PIC X(13).
       03 FS14-15-8-DWH           PIC X(13).
       03 FS14-15-9-DWH           PIC X(13).
       03 FS14-15-10-DWH           PIC X(13).
       03 FS14-1-DWH           PIC 9.
       03 FS14-2-DWH           PIC 9.
       03 FS14-3-DWH           PIC 9.
       03 FS14-4-DWH           PIC 9.
       03 FS14-5-DWH           PIC 9.
       03 FS14-6-DWH           PIC 9.
       03 FS14-7-DWH           PIC 9.
       03 FS14-8-DWH           PIC 9.
       03 FS14-9-DWH           PIC 9.
       03 FS14-10-DWH           PIC 9.
       03 FS15-1-DWH           PIC -9(9)V99.
       03 FS15-2-DWH           PIC -9(9)V99.
       03 FS15-3-DWH           PIC -9(9)V99.
       03 FS15-4-DWH           PIC -9(9)V99.
       03 FS15-5-DWH           PIC -9(9)V99.
       03 FS15-6-DWH           PIC -9(9)V99.
       03 FS15-7-DWH           PIC -9(9)V99.
       03 FS15-8-DWH           PIC -9(9)V99.
       03 FS15-9-DWH           PIC -9(9)V99.
       03 FS15-10-DWH           PIC -9(9)V99.
       03 FS16-1-DWH           PIC -9(9)V99.
       03 FS16-2-DWH           PIC -9(9)V99.
       03 FS16-3-DWH           PIC -9(9)V99.
       03 FS16-4-DWH           PIC -9(9)V99.
       03 FS16-5-DWH           PIC -9(9)V99.
       03 FS16-6-DWH           PIC -9(9)V99.
       03 FS16-7-DWH           PIC -9(9)V99.
       03 FS16-8-DWH           PIC -9(9)V99.
       03 FS16-9-DWH           PIC -9(9)V99.
       03 FS16-10-DWH           PIC -9(9)V99.
       03 FS17-1-DWH           PIC -9(9)V99.
       03 FS17-2-DWH           PIC -9(9)V99.
       03 FS17-3-DWH           PIC -9(9)V99.
       03 FS17-4-DWH           PIC -9(9)V99.
       03 FS17-5-DWH           PIC -9(9)V99.
       03 FS17-6-DWH           PIC -9(9)V99.
       03 FS17-7-DWH           PIC -9(9)V99.
       03 FS17-8-DWH           PIC -9(9)V99.
       03 FS17-9-DWH           PIC -9(9)V99.
       03 FS17-10-DWH           PIC -9(9)V99.
       03 FS18-DWH           PIC 9(6).
       03 FS19-DWH           PIC 9.

移动指令

  * ============================================================   
   PROG.                                                             
       MOVE FS1  TO FS1-DWH
       MOVE FS2  TO FS2-DWH
       MOVE FS2A  TO FS2A-DWH
       MOVE RFS2B  TO RFS2B-DWH
       MOVE FS2B  TO FS2B-DWH
       MOVE FS3  TO FS3-DWH
       MOVE FS3A  TO FS3A-DWH
       MOVE FS3B  TO FS3B-DWH
       MOVE FS4  TO FS4-DWH
       MOVE FS4A  TO FS4A-DWH
       MOVE FS4B  TO FS4B-DWH
       MOVE FS4C  TO FS4C-DWH
       MOVE FS5  TO FS5-DWH
       MOVE FS6  TO FS6-DWH
       MOVE FS7  TO FS7-DWH
       MOVE FS8  TO FS8-DWH
       MOVE FS9  TO FS9-DWH
       MOVE FS10  TO FS10-DWH
       MOVE FS11  TO FS11-DWH
       MOVE FS12  TO FS12-DWH
       MOVE FS13  TO FS13-DWH
       MOVE FS14-15(1)  TO FS14-15-1-DWH
       MOVE FS14-15(2)  TO FS14-15-2-DWH
       MOVE FS14-15(3)  TO FS14-15-3-DWH
       MOVE FS14-15(4)  TO FS14-15-4-DWH
       MOVE FS14-15(5)  TO FS14-15-5-DWH
       MOVE FS14-15(6)  TO FS14-15-6-DWH
       MOVE FS14-15(7)  TO FS14-15-7-DWH
       MOVE FS14-15(8)  TO FS14-15-8-DWH
       MOVE FS14-15(9)  TO FS14-15-9-DWH
       MOVE FS14-15(10)  TO FS14-15-10-DWH
       MOVE FS14(1)  TO FS14-1-DWH
       MOVE FS14(2)  TO FS14-2-DWH
       MOVE FS14(3)  TO FS14-3-DWH
       MOVE FS14(4)  TO FS14-4-DWH
       MOVE FS14(5)  TO FS14-5-DWH
       MOVE FS14(6)  TO FS14-6-DWH
       MOVE FS14(7)  TO FS14-7-DWH
       MOVE FS14(8)  TO FS14-8-DWH
       MOVE FS14(9)  TO FS14-9-DWH
       MOVE FS14(10)  TO FS14-10-DWH
       MOVE FS15(1)  TO FS15-1-DWH
       MOVE FS15(2)  TO FS15-2-DWH
       MOVE FS15(3)  TO FS15-3-DWH
       MOVE FS15(4)  TO FS15-4-DWH
       MOVE FS15(5)  TO FS15-5-DWH
       MOVE FS15(6)  TO FS15-6-DWH
       MOVE FS15(7)  TO FS15-7-DWH
       MOVE FS15(8)  TO FS15-8-DWH
       MOVE FS15(9)  TO FS15-9-DWH
       MOVE FS15(10)  TO FS15-10-DWH
       MOVE FS16(1)  TO FS16-1-DWH
       MOVE FS16(2)  TO FS16-2-DWH
       MOVE FS16(3)  TO FS16-3-DWH
       MOVE FS16(4)  TO FS16-4-DWH
       MOVE FS16(5)  TO FS16-5-DWH
       MOVE FS16(6)  TO FS16-6-DWH
       MOVE FS16(7)  TO FS16-7-DWH
       MOVE FS16(8)  TO FS16-8-DWH
       MOVE FS16(9)  TO FS16-9-DWH
       MOVE FS16(10)  TO FS16-10-DWH
       MOVE FS17(1)  TO FS17-1-DWH
       MOVE FS17(2)  TO FS17-2-DWH
       MOVE FS17(3)  TO FS17-3-DWH
       MOVE FS17(4)  TO FS17-4-DWH
       MOVE FS17(5)  TO FS17-5-DWH
       MOVE FS17(6)  TO FS17-6-DWH
       MOVE FS17(7)  TO FS17-7-DWH
       MOVE FS17(8)  TO FS17-8-DWH
       MOVE FS17(9)  TO FS17-9-DWH
       MOVE FS17(10)  TO FS17-10-DWH
       MOVE FS18  TO FS18-DWH
       MOVE FS19  TO FS19-DWH

一旦编写了平面文件,它们就可以由 VBA 代码处理到 MySQL,也由 VB.NET 应用程序生成。


自动生成的 VBA

输入def声明处理文本文件的导入

请注意每个字段旁边的评论中的原始图片

'-------------------------------------------------------------
' REC_FC8 Record
'-------------------------------------------------------------
Private Type REC_FC8 
   FS1 as string*1  '  03 FS1  PIC X  
   FS2 as string*9  '  03 FS2  PIC   
   FS2A as string*1  '  05 FS2A  PIC 9  
   RFS2B as string*8  '  05 RFS2B  PIC X(8)  
   FS2B as string*8  '  05 FS2B  PIC 9(8)  
   FS3 as string*11  '  03 FS3  PIC   
   FS3A as string*1  '  05 FS3A  PIC 9  
   FS3B as string*10  '  05 FS3B  PIC X(10)  
   FS4 as string*6  '  03 FS4  PIC   
   FS4A as string*2  '  05 FS4A  PIC 99  
   FS4B as string*2  '  05 FS4B  PIC 99  
   FS4C as string*2  '  05 FS4C  PIC 99  
   FS5 as string*5  '  03 FS5  PIC X(5)  
   FS6 as string*20  '  03 FS6  PIC X(20)  
   FS7 as string*1  '  03 FS7  PIC 9  
   FS8 as string*12  '  03 FS8  PIC S9(9)V99 computational-3 
   FS9 as string*12  '  03 FS9  PIC S9(9)V99 computational-3 
   FS10 as string*1  '  03 FS10  PIC 9  
   FS11 as string*12  '  03 FS11  PIC S9(9)V99 computational-3 
   FS12 as string*12  '  03 FS12  PIC S9(9)V99 computational-3 
   FS13 as string*12  '  03 FS13  PIC S9(9)V99 computational-3 
   FS14_15_1 as string*13  '  03 FS14-15  PIC   
   FS14_15_2 as string*13  '  03 FS14-15  PIC   
   FS14_15_3 as string*13  '  03 FS14-15  PIC   
   FS14_15_4 as string*13  '  03 FS14-15  PIC   
   FS14_15_5 as string*13  '  03 FS14-15  PIC   
   FS14_15_6 as string*13  '  03 FS14-15  PIC   
   FS14_15_7 as string*13  '  03 FS14-15  PIC   
   FS14_15_8 as string*13  '  03 FS14-15  PIC   
   FS14_15_9 as string*13  '  03 FS14-15  PIC   
   FS14_15_10 as string*13  '  03 FS14-15  PIC   
   FS14_1 as string*1  '  05 FS14  PIC 9  
   FS14_2 as string*1  '  05 FS14  PIC 9  
   FS14_3 as string*1  '  05 FS14  PIC 9  
   FS14_4 as string*1  '  05 FS14  PIC 9  
   FS14_5 as string*1  '  05 FS14  PIC 9  
   FS14_6 as string*1  '  05 FS14  PIC 9  
   FS14_7 as string*1  '  05 FS14  PIC 9  
   FS14_8 as string*1  '  05 FS14  PIC 9  
   FS14_9 as string*1  '  05 FS14  PIC 9  
   FS14_10 as string*1  '  05 FS14  PIC 9  
   FS15_1 as string*12  '  05 FS15  PIC S9(9)V99 computational-3 
   FS15_2 as string*12  '  05 FS15  PIC S9(9)V99 computational-3 
   FS15_3 as string*12  '  05 FS15  PIC S9(9)V99 computational-3 
   FS15_4 as string*12  '  05 FS15  PIC S9(9)V99 computational-3 
   FS15_5 as string*12  '  05 FS15  PIC S9(9)V99 computational-3 
   FS15_6 as string*12  '  05 FS15  PIC S9(9)V99 computational-3 
   FS15_7 as string*12  '  05 FS15  PIC S9(9)V99 computational-3 
   FS15_8 as string*12  '  05 FS15  PIC S9(9)V99 computational-3 
...
   FS17_8 as string*12  '  03 FS17  PIC S9(9)V99 computational-3 
   FS17_9 as string*12  '  03 FS17  PIC S9(9)V99 computational-3 
   FS17_10 as string*12  '  03 FS17  PIC S9(9)V99 computational-3 
   FS18 as string*6  '  03 FS18  PIC 9(6)  
   FS19 as string*1  '  03 FS19  PIC 9      
        FC8LF As String * 2 ' LF 11
End Type

创建表过程

每个字段都变成了一个对象(来自我创建的自定义类),SQLtypeFull下面使用的方法返回每个字段的 MySQL 数据类型

'========================================================================
Private Function Create_Table_MySQL() As Boolean
    On Error GoTo Erreur

    Dim Rs As Recordset
    Dim SQL As String

    SQL = "CREATE TABLE IF NOT EXISTS `TBL_DAT_FACTURE` ( `ID` INT(11) NOT NULL auto_increment, `RECID` INT(11)"
           SQL = SQL &  ", `FS1` " & FS1.SQLtypeFull
           SQL = SQL &  ", `FS2` " & FS2.SQLtypeFull
           SQL = SQL &  ", `FS2A` " & FS2A.SQLtypeFull
           SQL = SQL &  ", `RFS2B` " & RFS2B.SQLtypeFull
           SQL = SQL &  ", `FS2B` " & FS2B.SQLtypeFull
           SQL = SQL &  ", `FS3` " & FS3.SQLtypeFull
           SQL = SQL &  ", `FS3A` " & FS3A.SQLtypeFull
           SQL = SQL &  ", `FS3B` " & FS3B.SQLtypeFull
           SQL = SQL &  ", `FS4` " & FS4.SQLtypeFull
           SQL = SQL &  ", `FS4A` " & FS4A.SQLtypeFull
           SQL = SQL &  ", `FS4B` " & FS4B.SQLtypeFull
           SQL = SQL &  ", `FS4C` " & FS4C.SQLtypeFull
           SQL = SQL &  ", `FS5` " & FS5.SQLtypeFull
           SQL = SQL &  ", `FS6` " & FS6.SQLtypeFull
           SQL = SQL &  ", `FS7` " & FS7.SQLtypeFull
           SQL = SQL &  ", `FS8` " & FS8.SQLtypeFull
           SQL = SQL &  ", `FS9` " & FS9.SQLtypeFull
           SQL = SQL &  ", `FS10` " & FS10.SQLtypeFull
           SQL = SQL &  ", `FS11` " & FS11.SQLtypeFull
           SQL = SQL &  ", `FS12` " & FS12.SQLtypeFull
           SQL = SQL &  ", `FS13` " & FS13.SQLtypeFull
           SQL = SQL &  ", `FS14_15_1` " & FS14_15_1.SQLtypeFull
           SQL = SQL &  ", `FS14_15_2` " & FS14_15_2.SQLtypeFull
           SQL = SQL &  ", `FS14_15_3` " & FS14_15_3.SQLtypeFull
           SQL = SQL &  ", `FS14_15_4` " & FS14_15_4.SQLtypeFull
           SQL = SQL &  ", `FS14_15_5` " & FS14_15_5.SQLtypeFull
           SQL = SQL &  ", `FS14_15_6` " & FS14_15_6.SQLtypeFull
           SQL = SQL &  ", `FS14_15_7` " & FS14_15_7.SQLtypeFull
           SQL = SQL &  ", `FS14_15_8` " & FS14_15_8.SQLtypeFull
           SQL = SQL &  ", `FS14_15_9` " & FS14_15_9.SQLtypeFull
           SQL = SQL &  ", `FS14_15_10` " & FS14_15_10.SQLtypeFull
           SQL = SQL &  ", `FS14_1` " & FS14_1.SQLtypeFull
           SQL = SQL &  ", `FS14_2` " & FS14_2.SQLtypeFull
           SQL = SQL &  ", `FS14_3` " & FS14_3.SQLtypeFull
           SQL = SQL &  ", `FS14_4` " & FS14_4.SQLtypeFull
           SQL = SQL &  ", `FS14_5` " & FS14_5.SQLtypeFull
           SQL = SQL &  ", `FS14_6` " & FS14_6.SQLtypeFull
           SQL = SQL &  ", `FS14_7` " & FS14_7.SQLtypeFull
           SQL = SQL &  ", `FS14_8` " & FS14_8.SQLtypeFull
           SQL = SQL &  ", `FS14_9` " & FS14_9.SQLtypeFull
           SQL = SQL &  ", `FS14_10` " & FS14_10.SQLtypeFull
           SQL = SQL &  ", `FS15_1` " & FS15_1.SQLtypeFull
           SQL = SQL &  ", `FS15_2` " & FS15_2.SQLtypeFull
           SQL = SQL &  ", `FS15_3` " & FS15_3.SQLtypeFull
           SQL = SQL &  ", `FS15_4` " & FS15_4.SQLtypeFull
           SQL = SQL &  ", `FS15_5` " & FS15_5.SQLtypeFull
...
           SQL = SQL &  ", `FS17_9` " & FS17_9.SQLtypeFull
           SQL = SQL &  ", `FS17_10` " & FS17_10.SQLtypeFull
           SQL = SQL &  ", `FS18` " & FS18.SQLtypeFull
           SQL = SQL &  ", `FS19` " & FS19.SQLtypeFull


    SQL = SQL & ", PRIMARY KEY (`ID`)"
    SQL = SQL & ") ENGINE=MyISAM  DEFAULT CHARSET=utf8 COLLATE utf8_bin;"
    MySQLcon.Execute (SQL)      

    Create_Table_MySQL = True

Exit_Sub:
    Exit Function

Erreur:
    Create_Table_MySQL = False
    Resume Exit_Sub

End Function

最终 SQL 语句

CREATE TABLE IF NOT EXISTS `FACTURE` 
( `ID` INT(11) NOT NULL auto_increment, `RECID` INT(11), `FS1` CHAR(1), `FS2` CHAR(9), `FS2A` TINYINT(1) UNSIGNED, `RFS2B` CHAR(8), `FS2B` INT(8) UNSIGNED, `FS3` CHAR(11), `FS3A` TINYINT(1) UNSIGNED, `FS3B` CHAR(10), `FS4` CHAR(6), `FS4A` TINYINT(2) UNSIGNED, `FS4B` TINYINT(2) UNSIGNED, `FS4C` TINYINT(2) UNSIGNED, `FS5` CHAR(5), `FS6` CHAR(20), `FS7` TINYINT(1) UNSIGNED, `FS8` DECIMAL(11,2), `FS9` DECIMAL(11,2), `FS10` TINYINT(1) UNSIGNED, `FS11` DECIMAL(11,2), `FS12` DECIMAL(11,2), `FS13` DECIMAL(11,2), `FS14_15_1` CHAR(13), `FS14_15_2` CHAR(13), `FS14_15_3` CHAR(13), `FS14_15_4` CHAR(13), `FS14_15_5` CHAR(13), `FS14_15_6` CHAR(13), `FS14_15_7` CHAR(13), `FS14_15_8` CHAR(13), `FS14_15_9` CHAR(13), `FS14_15_10` CHAR(13), `FS14_1` TINYINT(1) UNSIGNED, `FS14_2` TINYINT(1) UNSIGNED, `FS14_3` TINYINT(1) UNSIGNED, `FS14_4` TINYINT(1) UNSIGNED, `FS14_5` TINYINT(1) UNSIGNED, `FS14_6` TINYINT(1) UNSIGNED, `FS14_7` TINYINT(1) UNSIGNED, `FS14_8` TINYINT(1) UNSIGNED, `FS14_9` TINYIN
T(1) UNSIGNED, `FS14_10` TINYINT(1) UNSIGNED, `FS15_1` DECIMAL(11,2), `FS15_2` DECIMAL(11,2), `FS15_3` DECIMAL(11,2), `FS15_4` DECIMAL(11,2), `FS15_5` DECIMAL(11,2), `FS15_6` DECIMAL(11,2), `FS15_7` DECIMAL(11,2), `FS15_8` 
...
DECIMAL(11,2), `FS17_10` DECIMAL(11,2), `FS18` DATE, `FS19` TINYINT(1) UNSIGNED, 
 PRIMARY KEY (`ID`)) ENGINE=MyISAM  
 DEFAULT CHARSET=utf8 COLLATE utf8_bin;

我在生成的 VBA 模块中有更多内容,生成的 xml 的详细程度和准确性对所有这些模块都有很大帮助:

  • 我创建了一个类来管理字段的所有方面,特别是按照原始 PICTURE 和 VBA 类型(日期、长整数、双精度、货币等)处理 VBA/MySQL 的转换,并且有一个钩子以防万一你想强制另一种类型。
  • 它完全处理元数据的创建(也在 MySQL 中)
  • 它处理导入数据时的错误,在文件和字段级别记录所有内容

我可能已经展示了足够多的东西给你一些想法,所以我会停在那里。

最重要的是:当我们将 COBOL ERP 中进行的复杂计算转换为针对新数据仓库运行的 SQL 语句时,数据库返回的数字与 ERP 中返回的数字完全相同。在数百万条记录中,计算上没有一位数的损失。这是证明它有效的最好方法:-)

如果您想知道为什么我使用 Access/VBA 而不是 .NET 进行导入:这是一个不可协商的要求。

最后一点:我与CB2XML没有任何关系,这不是它的广告。它只是一个很棒且有用的软件,值得关注。

于 2016-03-13T23:51:38.183 回答
4

REDEFINES将使您的任务更加困难。不是“编译器”知道使用哪个特定字段,直观地说,是现有 COBOL 系统中的代码知道使用哪个字段。将有一些指示,另一个字段中的一些值,它将指示在哪个特定时间使用哪个字段。

以您的第二个示例为例,因为第一个示例没有上下文:

05  ADDRESS-PO-BOX-FLAG                  PIC X.

在使用数据之前将询问该字段。直接(你可以在那里找到很多可怕的代码)或使用 88 级条件名称:

    88  ADDRESS-IS-A-PO-BOX              VALUE "Y". (an example only)

IF ADDRESS-IS-A-PO-BOX
    some code relating to PO Boxes
ELSE
    some code relating to other types of addresses
END-IF

您的第一个示例将以类似的方式处理。

这是 REDEFINES 的“旧式”使用,在互斥情况下使用记录上的相同存储位置。节省存储,这是昂贵的。您正在使用的系统要么是“旧的”,要么它的设计被错误的“经验”感染。

您有两个广泛的选择:复制所有有条件的数据选择(以便您有两组业务逻辑保持同步);更改文件,以便每个字段占用自己的存储空间。

COMP-3(或 PACKED-DECIMAL)或 COMP/COMP-4/COMP-5/BINARY 数据类型的存在也会使您的事情变得复杂。然后,您需要在字段级别为实际的 EBCDIC 数据执行 EBCDIC 到 ASCII,并执行任何必要的操作来转换或简单地获取“计算”数据。

另请注意,任何带符号的显示数字字段(带有以 S 开头但没有明确“计算”用法的 PICture 的数字字段)显然在最后一个字节中包含“字符”数据,因为符号被保存为“过冲”的最后一个字节。

请注意,二进制数据类型将是 Big Endian。

如果您收到没有 REDEFINES、没有“计算”字段和嵌入符号(或隐式小数位)的文件,这对您来说会变得非常简单。您的所有数据都是字符,您可以在记录级别(或在文件级别,使用您的文件传输机制)进行 EBCDIC 到 ASCII。

如果您查看此处标记为 COMP-3 的问题,您会发现对此的进一步讨论,并且如果您认为荒谬的路线(您的程序理解本机 Mainframe COBOL 数据项而不是纯“文本”)是唯一可能的方法去,那么在讨论中有很多东西你可能会觉得有用并且能够使用或应用。

如果您的公司受到外部“监管”,那么在编写一行代码之前,请确保您的合规、审计和会计部门对您的设计感到满意。哎呀。迟到了。让我们希望它是制造。

于 2016-03-07T23:45:37.723 回答