iTP Active Transaction Pages (iTP ATP) Programmer's Guide

Migration Considerations

iTP Active Transaction Pages (iTP ATP) Programmer’s Guide—522292-002

G-3

ATP Parser Differences

An error message will be returned.

xyz.atp:3: missing } after function body:

xyz.atp:3: function abc ( ) {

xyz.atp:3: .................

xyz.atp (1): ATP parser error:compile failed

Remember, the application can call the atp.execute method to implement the same

functionality. See Global Functions

for further details.

ATP Objects

atp.request

This variable property is read-only. If you try to modify the value, ATP will report an

error message.

atp.sql methods

•

ATP 2.0 releases the internal cache entry of the SQL statement when the close

method is called. The subsequent methods like execute or next report an error,

“Invalid SQL statement”, after the close method. The close method between

multiple execute methods is not necessary for the same SQL statement on the same

page. ATP V20 closes and re-opens the internal SQL cursor for the second and

subsequent execute methods.

•

execute

ATP V20 checks the number and types of parameter values passed by the

applications. ATP reports errors if the syntax of the parameters violates the

following rules:

There must be one parameter for each SQL placeholder in the SELECT

statement.

If the number of parameters is greater than the number of SQL variable

placeholders in the SELECT statement, the type of parameter following the last

SQL placeholder must be the atp.transaction object.

You must check the validity of your own data. ATP V21 performs data

conversions without checking validity. See Example G-1.