If

See javadoc - uk.gov.gchq.koryphe.impl.predicate.If

Available since Koryphe version 1.3.0

Conditionally applies a predicate

Examples

Apply predicates to input

This example tests first whether the input is an Integer. If so, it is then tested to see if the value is greater than 3. Otherwise, since it is not an Integer, we then test to see if it is NOT a String.

Java

JSON

Full JSON

Python

final If<Comparable> predicate = new If<>(new IsA(Integer.class), new IsMoreThan(3), new Not<>(new IsA(String.class)));

{
  "class" : "uk.gov.gchq.koryphe.impl.predicate.If",
  "predicate" : {
    "class" : "IsA",
    "type" : "java.lang.Integer"
  },
  "then" : {
    "class" : "IsMoreThan",
    "orEqualTo" : false,
    "value" : 3
  },
  "otherwise" : {
    "class" : "Not",
    "predicate" : {
      "class" : "IsA",
      "type" : "java.lang.String"
    }
  }
}

{
  "class" : "uk.gov.gchq.koryphe.impl.predicate.If",
  "predicate" : {
    "class" : "uk.gov.gchq.koryphe.impl.predicate.IsA",
    "type" : "java.lang.Integer"
  },
  "then" : {
    "class" : "uk.gov.gchq.koryphe.impl.predicate.IsMoreThan",
    "orEqualTo" : false,
    "value" : 3
  },
  "otherwise" : {
    "class" : "uk.gov.gchq.koryphe.impl.predicate.Not",
    "predicate" : {
      "class" : "uk.gov.gchq.koryphe.impl.predicate.IsA",
      "type" : "java.lang.String"
    }
  }
}

g.If( 
  predicate=g.IsA( 
    type="java.lang.Integer" 
  ), 
  then=g.IsMoreThan( 
    value=3, 
    or_equal_to=False 
  ), 
  otherwise=g.Not( 
    predicate=g.IsA( 
      type="java.lang.String" 
    ) 
  ) 
)

Input type:

uk.gov.gchq.koryphe.signature.Signature$UnknownGenericType

Example inputs:

Input Type	Input	Result
java.lang.Integer	2	false
java.lang.Integer	3	false
java.lang.Integer	5	true
java.lang.String	test	false
java.util.HashMap	{}	true
java.util.ArrayList	[]	true

If

If

Examples

Apply predicates to input

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