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changes.mady.by.user Rakesh Chaudhary

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Snap type:

Flow


Description:

This Snap filters a document stream based on a expression. If the filter expression evaluates to true, then the document will be passed-through. If the filter expression evaluates to false, then the document will be dropped in the stream. Expressions that do not evaluate to a boolean value will cause the pipeline to fail. 

Expression functions can be found here.

Router vs. Filter

The Router and Filter Snaps are similar, but the Filter Snap only handles a single stream. The Router Snap is designed to handle multiple output views.


Prerequisites:

[None]


Support and limitations:Ultra pipelines: Works in Ultra Pipelines.Spark mode: Supported in /wiki/spaces/SD/pages/1437917 mode.
Account: 

Accounts are not used with this Snap.


Views:


InputThis Snap has exactly one document input view.
OutputThis Snap has exactly one document output view.
Error

This Snap has at most one document error view and produces zero or more documents in the view. 

In Spark mode:

  • the errors will be routed to error view documents if the error policy is defined as CONTINUE;
  • the execution will stop on first error if the error policy is defined as FAIL;
  • the execution will simply ignore the error if the error policy is defined as IGNORE.


Settings

Label

required


The name for the Snap. You can modify this to be more specific, especially if you have more than one of the same Snap in your pipeline.

Filter Expression
required 


The expression to evaluate. If this expression evaluates to true, then the document will be passed through. Otherwise, the document will be dropped. If the expression does not evaluate to a boolean, then the pipeline will fail.

Examples:

$first_name == "Joe"
$people[0].age > 15
$Customers.contains(_customer)

startsWith($description, "Snap") && $quantity < 100 


Default value: [None]

Multiexcerpt include macro
nameSnap Execution
pageAnaplan Read


Multiexcerpt include macro
nameSnap_Execution_Introduced
pageAnaplan Read

Example

Insert excerpt
Flow Snap Pack
Flow Snap Pack
nopaneltrue