ExtractId

See javadoc - uk.gov.gchq.gaffer.data.element.function.ExtractId

Available since Gaffer version 1.4.0

Extracts an identifier from an element

Examples

Extract source from edge

The function will simply extract the value of the provided Id, for a given Element. This Id can either be an IdentifierType, or a String representation, eg "SOURCE".

final ExtractId function = new ExtractId(IdentifierType.SOURCE);

{
  "class" : "ExtractId",
  "id" : "SOURCE"
}

{
  "class" : "uk.gov.gchq.gaffer.data.element.function.ExtractId",
  "id" : "SOURCE"
}

g.ExtractId( 
  id="SOURCE" 
)

Input type:

uk.gov.gchq.gaffer.data.element.Element

Example inputs:

Extract vertex from entity

This example simply demonstrates the same functionality but on an Entity.

final ExtractId function = new ExtractId(IdentifierType.VERTEX);

{
  "class" : "ExtractId",
  "id" : "VERTEX"
}

{
  "class" : "uk.gov.gchq.gaffer.data.element.function.ExtractId",
  "id" : "VERTEX"
}

g.ExtractId( 
  id="VERTEX" 
)

Input type:

uk.gov.gchq.gaffer.data.element.Element

Example inputs: