Function Name	Lower
Category	String
Icon
Description	Convert text string characters to lower case
Inputs	String Text String to convert to lower case
Outputs	Result Text String with all characters converted to lower case
Properties	Culture Set culture for language data

Usage

The Data Mapper String Lower function converts text String characters to lower case. If your source XML contains characters you wish to be stored entirely in lower case within the target, you can apply this transform when mapping the data. Whether the characters are within element content or within attribute values, the transform will execute on them. To apply the String Lower transform function, use the following process:

Create a new Data Mapper file, dragging your XML data source and targets into the editor area. For this example we are using comment_source.xsd, an XML Schema Definition inferred from the following source:

<comment contributor="Mary">
 I really like this
</comment>

For our target schema we will be using comment_target.xsd, inferred from the following XML:

<user_comment>
 <user>john</user>
 <content>I absolutely love this</content>
</user_comment> 

The data models user comments for a product or website. Here is the Data Mapper with Source and Target imported:

Let's drag the String Lower function from the Component Palette into the mapping area:

The String Lower function takes a single input and gives a single output. The input should be connected to the source text String item to be converted to lower case. The output should be connected to the target item. In this case we are mapping from an attribute to an element:

We map the "contributor" attribute in the XML Reader to the "user" element in the XML Writer, converting to lower case at the same time. Finally let's make the remaining input and output connections:

We can now execute the transform by pressing Shift-F5 or the Execute button (). The transform is applied and the file we selected as output opens in the editor:

<user_comment>
 <user>mary</user>
 <content>
  I really like this
 </content>
</user_comment>

The input attribute value has been converted to lower case as part of the mapping process.

Properties

If you happen to be dealing with different languages, the Lower function can also be tailored to suit. Within the mapping area, right-click the Lower function and choose Show Properties. You can choose languages from the Culture drop-down list and the Mapper will select lower case characters accordingly.