Class: ApacheCrunch::DerivationRule

Inherits:

Object

• Object
• ApacheCrunch::DerivationRule

Defined in:

lib/derivation.rb

Overview

Abstract for classes that define how to obtain a given element from the value of another.

Direct Known Subclasses

TimeDerivationRule

Instance Method Summary

• #derive(name, source_value) ⇒ Object

  Derives the given derivable element from the given element value.

• #source_name ⇒ Object

  Returns the name of the element from which this rule derives values.

Instance Method Details

#derive(name, source_value) ⇒ Object

Derives the given derivable element from the given element value

Raises:

• (NotImplementedError)

# File 'lib/derivation.rb', line 10

def derive(name, source_value)
    raise NotImplementedError
end

#source_name ⇒ Object

Returns the name of the element from which this rule derives values

Raises:

• (NotImplementedError)

# File 'lib/derivation.rb', line 5

def source_name
    raise NotImplementedError
end