Count

See javadoc - uk.gov.gchq.gaffer.operation.impl.Count

Available since Gaffer version 1.0.0

Counts the number of items in an iterable

Required fields

No required fields

Examples

Count all elements

Using this directed graph:


    --> 4 <--
  /     ^     \
 /      |      \
1  -->  2  -->  3
         \
           -->  5

Java
JSON
Full JSON
Python
OperationChain<Long> countAllElements = new OperationChain.Builder()
        .first(new GetAllElements())
        .then(new Count<>())
        .build();
{
  "class" : "OperationChain",
  "operations" : [ {
    "class" : "GetAllElements"
  }, {
    "class" : "Count"
  } ]
}
{
  "class" : "uk.gov.gchq.gaffer.operation.OperationChain",
  "operations" : [ {
    "class" : "uk.gov.gchq.gaffer.operation.impl.get.GetAllElements"
  }, {
    "class" : "uk.gov.gchq.gaffer.operation.impl.Count"
  } ]
}
g.OperationChain( 
  operations=[ 
    g.GetAllElements(), 
    g.Count() 
  ] 
)

Result:

Java
JSON
11
11

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