Dynamic Mashup Expressions
Dynamic mashup expressions provide dynamic content in a mashup script. You can use dynamic mashup expressions:
In most XPath expressions or EMML attributes that accept an XPath expression: This can replace the entire XPath expression or any part of the XPath expression.
Note: You cannot nest dynamic mashup expressions. So you cannot use a dynamic mashup expression in an XPath inside a dynamic mashup expression for literal XML. This can be useful to make any
EMML statement dynamic including macros. See
Dynamic Expressions in XPath Expressions and
<macro> for examples.
In <template> elements to build syntax or any string dynamically: This is commonly done to build a dynamic expression to use as input parameters for a generic mashup script or generic macro. But you can use the <template> element to build any string dynamically within a mashup script or macro. See
Dynamic XPath or Other Syntax in Mashups for examples.
Dynamic expressions are XPath expressions enclosed in braces ( { expression } ). Variable references start with $ in dynamic mashup expressions. For example:
{$filterResult/list/name}
{upper-case($list/memberName)}
{$selectedItem}[matches(description, 'Ruby')
Hello, my name is {$currentUser}!]