Class: OpenWFE::RawExpression::Parameter

Inherits:
Object
  • Object
show all
Defined in:
lib/openwfe/expressions/raw.rb

Overview

Encapsulating

<parameter field="x" default="y" type="z" match="m" />

Somehow I have that : OpenWFEru is not a strongly typed language … Anyway I implemented that to please Pat.

Instance Method Summary collapse

Constructor Details

#initialize(field, match, default, type) ⇒ Parameter

Returns a new instance of Parameter.



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# File 'lib/openwfe/expressions/raw.rb', line 431

def initialize (field, match, default, type)

    @field = to_s field
    @match = to_s match
    @default = to_s default
    @type = to_s type
end

Instance Method Details

#check(workitem) ⇒ Object

Will raise an exception if this param requirement is not met by the workitem.



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# File 'lib/openwfe/expressions/raw.rb', line 443

def check (workitem)

    unless @field
        raise \
            OpenWFE::ParameterException,
            "'parameter'/'param' without a 'field' attribute"
    end

    field_value = workitem.attributes[@field]
    field_value = @default unless field_value

    unless field_value
        raise \
            OpenWFE::ParameterException, 
            "field '#{@field}' is missing" \
    end

    check_match(field_value)

    enforce_type(workitem, field_value)
end