RTF Template :Variables Initialization and usage

Let’s see how we can use the variables to store temporary data or use for calculation.  This is achieved using  “xdoxslt:” function. These are the BI Publisher extension of standard xslt functions.

Use xdoxslt:set_variable () function to set /initialize the variable  and xdoxslt:get_variable() function to get the variable value.  $_XDOCTX is the System variables to set the XDO Context.


Variables in loops:


/*initialize a variables*/


< ?xdoxslt:set_variable($_XDOCTX, ‘counter’, 0)? >


/*update the variable’s value by adding the current value to MY_CNT, which is XML element */


< ?xdoxslt:set_variable($_XDOCTX, ‘counter’, xdoxslt:get_variable($_XDOCTX, ‘counter’) + MY_CNT)? >


/* accessing the variables */


< ?xdoxslt:get_variable($_XDOCTX, ‘counter’)? >




/*Working in a loop*/


< ?xdoxslt:set_variable($_XDOCTX, ‘counter’, 0)? >


< ?for-each:G1? >


/*increment the counter*/


< ?xdoxslt:set_variable($_XDOCTX, ‘counter’, xdoxslt:get_variable($_XDOCTX, ‘counter’) + 1)? >


< ?end for-each? >


< ?xdoxslt:get_variable($_XDOCTX, ‘counter’)? >


Storing tag values into variable and making calculation with other tags:


I have a variable 'd' with value '8' and I wanted to use that variable and other tags COL1, COL2 in calculating variable 'f' as shown below, Then calculated COL3 with variable 'f' to display results.


< ?xdoxslt:set_variable($_XDOCTX, ‘d’,8) ? >


< ?xdoxslt:set_variable($_XDOCTX, ‘f’, xdoxslt:get_variable($_XDOCTX, ‘d’) + COL1 - COL2 )? >


< ? COL3 div  (xdoxslt:get_variable($_XDOCTX, ‘f’)) ? >


NOTE:

1. Make sure you have spaces between tag names and mathematical operators (ex: COL1 + COL2 - COL3).

2. You can use get_variable() to display results.

3. Always use xdoxslt: prefixed when using get_variable()(ex:( xdoxslt:get_variable($_XDOCTX, ‘f’) )