1. Developing SOA Applications with Oracle SOA Suite
  2. Sharing Functionality Across Service Components
  3. Creating Transformations with the XSLT Map Editor
  4. Using XPath Expressions
  5. How to Modify an Existing Source to Target Mapping
  6. How to Add an XPath Function to an Existing XPath Expression

How to Add an XPath Function to an Existing XPath Expression

You can drag and drop a function onto an existing source to target mapping. When you drop a function on a map, the existing location path expression is used to populate the first parameter of the function that is dropped.

In the following steps, you change the expression you edited in the preceding section (How to Modify an Existing Source to Target Mapping). You use the concat function to concatenate the first Comment in the source with the Description in the source.

To add an XPath function to an existing XPath expression

  1. If the Components window is not visible, select Window > Components from the Oracle JDeveloper menu bar.
  2. In the Components window, select General XPath. Expand the String Functions section by clicking the plus sign (+) next to it.
  3. Drag the concat function icon from the String Functions section to the line representing the existing map that you want to modify. The line turns green, indicating that you can drop the function.
  4. Drop the concat function on the line. The function is inserted into the map, and the first parameter of the concat function is set to the value of the existing XPath expression.
    Description of xslt_drop_concat.gif follows
    Description of the illustration xslt_drop_concat.gif

    Note:

    If a function does not get added to the map, the function may not have any parameters. For example, if you drag and drop the xp20:current-date function onto the existing line, it has no effect because the xp20:current-date function takes no parameters.