Hi Guys ,
My scenario is following : I need to pass the whole Json inside the JSON generator snap .I have checked the velocity documnets that concate works by just appending ,like $a$b will concate the content of $a and $b . But in this case it is not working .
Json_input.zip (383 Bytes)
Here the “_” are for pipeline parameters and $ is for the variables coming from previous mapper .
Please help regarding this .
Hi,
To read the value from incoming mapper you just need to use $ and read from parameter you need to use ${_parameterName}.
[
{
"readFromUpStreamMapper": $a,
"readFromPrameter" : ${_parameterB}
}
]
yes @gowdhaman008 I know these things .I have tried in that way also . Same error is coming .
I have tried with this :
"{
"remove": {
"index": $CURRENT_IDX,
"alias": ${_IDX_ALIAS}$Suffix_batch
}
}"
My main issues is for the concatenate part . That is giving the trouble .
The following is working just fine 🙂
"{
"remove": {
"index": $CURRENT_IDX,
"alias": ${_IDX_ALIAS}
}
}"
@Rudradip This is a follow up after a considerable period of time but I wanted to answer the question.
Assuming in input document to the JSON Generator like:
{
"Body": "456",
}
This concatenation in the JSON Generator WILL NOT work:
[
{
"Response": {
"Message": "Thank you for your message, which was $Body"
}
}
]
and will result in an error like
Failed to validate the output
Resolution:
Verify that the table values and the template are correct
Reason:
Unexpected character ('4' (code 52)): was expecting comma to separate Object entries
But if you use a Velocity Directive, the following WILL work:
#set( $message = "Thank you for your message, which was $Body" )
[
{
"Response": {
"Message": $message
}
}
]
The output document will look like:
[{
"Response": {
"Message": "Thank you for your message, which was \"456\""
}
}]
Do note that the $Body value has been wrapped in quotes. I’ll investigate if there is a way to remove those.
@Rudradip, I think the issue is concatenating a pipeline variable and a regular variable which causes the syntax error. If you concatenate two regular variables it works fine. For example: $CURRENT_IDX$SUFFIX_BATCH
If you concatenate two pipeline variables, it will cause the syntax error:
$_IDX_ALIAS$_IDX_ALIAS
or even with a different syntax: ${_IDX_ALIAS}${_IDX_ALIAS} will cause the syntax error
I am copying @tstack and @cjhoward18 to comment on this as they may be able to share better insights into this.
