Declaring a new variable of XMLType
Technically it can be defined in any scope of any XMLType (if not found import it), but it is recommended to define it where it is really needed.
Create a new scope in the block where it is needed and define it, otherwise it may throw totally unrelated exceptions - you will not be able to figure out.
Initializing a new variable of XMLType already declared
Any XMLType variable must be initialized before it is getting used.
How to avoid generation of xmlns="" while doing mapping in xpaths
Declare and initialize the parent XMLType variable and while assigning or appending use the child of the newly defined variable to avoid getting xmlns="" in the xml tag.
How to append instead of assign while mapping xpaths
Do the mapping as you normally do first. Once mapping is done then right click the mapped path and convert it to append, it should create a + plus icon in the left xml xpath which shows that it got converted to append instead of assign.
Technically it can be defined in any scope of any XMLType (if not found import it), but it is recommended to define it where it is really needed.
Create a new scope in the block where it is needed and define it, otherwise it may throw totally unrelated exceptions - you will not be able to figure out.
Initializing a new variable of XMLType already declared
Any XMLType variable must be initialized before it is getting used.
How to avoid generation of xmlns="" while doing mapping in xpaths
Declare and initialize the parent XMLType variable and while assigning or appending use the child of the newly defined variable to avoid getting xmlns="" in the xml tag.
How to append instead of assign while mapping xpaths
Do the mapping as you normally do first. Once mapping is done then right click the mapped path and convert it to append, it should create a + plus icon in the left xml xpath which shows that it got converted to append instead of assign.
