Question

我正在开发一个DTS SSIS包，目的是使用Teamcity buildserver（通过Ruby / rake）...基本上我想为每个环境（Dev，UAT，Prod）定制不同的连接字符串..

例如在Test中我想指向SQL2008Test，并在Dev SQL2008Dev中。这意味着我需要在将dts包部署到相应的目录之前对其进行操作....

任何人都有使用REXML的经验 - 红宝石？

这是我的ruby代码（带有rakefile）

config = {}
File.open(File.join(BUILD_SSIS_DIR, IRS_DSS_USER_PACKAGE)) do |config_file|
    config = REXML::Document.new(config_file)
ConfigTasks.set_dts_constring_irs config, 'ConnectionString', 
"Data Source=SQL2008DEV;Initial Catalog=IRSDEV;Provider=SQLNCLI10.1;Integrated Security=SSPI;Auto Translate=False;Application Name=SSIS-IRS DSS User Data Package-{3CC00FAB-7009-402D-AE03-2426AFC6B7ED}SQL2008 IRS Multiple Connection;"
end

然后调用

def self.set_dts_constring_irs(config_file, name, connection_string)
    conn_string_element = config_file.root.elements['DTS:ConnectionManager/DTS:Property'];
    conn_string_element['DTS:Name="ConnectionString"'] = connection_string
end

这是我需要操作的DTS xml

  <DTS:ConnectionManager>
    <DTS:Property DTS:Name="DelayValidation">0</DTS:Property>
    <DTS:Property DTS:Name="ObjectName">SQL2008 IRS Multiple Connection</DTS:Property>
    <DTS:Property DTS:Name="DTSID">{3CC00FAB-7009-402D-AE03-2426AFC6B7ED}</DTS:Property>
    <DTS:Property DTS:Name="Description"></DTS:Property>
    <DTS:Property DTS:Name="CreationName">OLEDB</DTS:Property><DTS:ObjectData><DTS:ConnectionManager>
    <DTS:Property DTS:Name="Retain">0</DTS:Property>
    <DTS:Property DTS:Name="ConnectionString">Data Source=SQL2008DEV;Initial Catalog=IRSDEV;Provider=SQLNCLI10.1;Integrated Security=SSPI;Auto Translate=False;Application Name=SSIS-IRS DSS User Data Package-{3CC00FAB-7009-402D-AE03-2426AFC6B7ED}SQL2008 IRS Multiple Connection;</DTS:Property>
</DTS:ConnectionManager></DTS:ObjectData>
</DTS:ConnectionManager>

有人对我的工作有所了解吗？例如如何使用REXML深入研究我需要的连接字符串的元素/属性？

Answer 1

我假设您要使用REXML在XML文件中查找连接字符串，并将其替换为您自己的连接字符串。 REXML允许您使用XPath查找元素并设置它的值：

require 'rexml/document'

# assuming:
xml = '<DTS xmlns:DTS="www.microsoft.com/SqlServer/Dts">
         <DTS:ConnectionManager>
           <DTS:Property DTS:Name="DelayValidation">0</DTS:Property>
           <DTS:Property DTS:Name="ObjectName">SQL2008 IRS Multiple Connection</DTS:Property>
           <DTS:Property DTS:Name="DTSID">{3CC00FAB-7009-402D-AE03-2426AFC6B7ED</DTS:Property>
           <DTS:Property DTS:Name="Description"></DTS:Property>
           <DTS:Property DTS:Name="CreationName">OLEDB</DTS:Property>
           <DTS:ObjectData>
             <DTS:ConnectionManager>
               <DTS:Property DTS:Name="Retain">0</DTS:Property>
               <DTS:Property DTS:Name="ConnectionString">Data Source=SQL2008DEV;Initial Catalog=IRSDEV;Provider=SQLNCLI10.1;Integrated Security=SSPI;Auto Translate=False;Application Name=SSIS-IRS DSS User Data Package-{3CC00FAB-7009-402D-AE03-2426AFC6B7ED}SQL2008 IRS Multiple Connection;</DTS:Property>
            </DTS:ConnectionManager>
           </DTS:ObjectData>
         </DTS:ConnectionManager>
       </DTS>'

# find the connection string with XPath
connection_string_xpath = '/DTS/DTS:ConnectionManager/DTS:ObjectData/DTS:ConnectionManager/DTS:Property[@DTS:Name="ConnectionString"]'
new_connection_string = 'your new connection string here'

begin
  doc = REXML::Document.new(xml)
  root = doc.root
  # check that you can find the path you are looking for
  unless root.elements[connection_string_xpath].nil?
    # set the .text of the element to your connection string:
    root.elements[connection_string_xpath].text = new_connection_string
    # test:
    puts doc
  end
rescue REXML::ParseException => rexml_exception
  puts 'Invalid XML', rexml_exception
end

将输出（删除一些XML ...）：

...
<DTS:Property DTS:Name='ConnectionString'>your new connection string here</DTS:Property>
...

使用Ruby REXML进行DTS xml转换/操作

1 个答案: