Module: SoftLayer::ObjectFilterDefinitionContext

Defined in:
lib/softlayer/ObjectFilter.rb

Overview

The ObjectFilterDefinitionContext defines a bunch of methods that allow the property conditions of an object filter to be defined in a “pretty” way. Each method returns a block (a lambda, a proc) that, when called and pased the tail property of a property chain will generate a fragment of an object filter asking that that property match the given conditions.

This class, as a whole, is largely an implementation detail of object filter definitions and there is probably not a good reason to call into it directly.

Class Method Summary collapse

Class Method Details

.begins_with(value) ⇒ Object

Matches when the value is found at the beginning of the field. This search is not case sensitive



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# File 'lib/softlayer/ObjectFilter.rb', line 146

def self.begins_with(value)
  filter_criteria('^=', value)
end

.contains(value) ⇒ Object

Matches when the value is found within the field the search is not case sensitive



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# File 'lib/softlayer/ObjectFilter.rb', line 140

def self.contains(value)
  filter_criteria('*=', value)
end

.contains_exactly(value) ⇒ Object

Matches when the value is found within the field the search is case sensitive



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# File 'lib/softlayer/ObjectFilter.rb', line 183

def self.contains_exactly(value)
  filter_criteria('~', value)
end

.does_not_contain(value) ⇒ Object

Matches when the value is not found within the field the search is case sensitive



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# File 'lib/softlayer/ObjectFilter.rb', line 189

def self.does_not_contain(value)
  filter_criteria('!~', value)
end

.ends_with(value) ⇒ Object

Matches when the value is found at the end of the field. This search is not case sensitive



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# File 'lib/softlayer/ObjectFilter.rb', line 152

def self.ends_with(value)
  filter_criteria('$=', value)
end

.is(value) ⇒ Object

Matches when the value in the field is exactly equal to the given value. This is a case-sensitive match



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# File 'lib/softlayer/ObjectFilter.rb', line 128

def self.is(value)
  { 'operation' => value }
end

.is_greater_or_equal_to(value) ⇒ Object

Matches when the value in the field is greater than or equal to the given value



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# File 'lib/softlayer/ObjectFilter.rb', line 172

def self.is_greater_or_equal_to(value)
  filter_criteria('>=', value)
end

.is_greater_than(value) ⇒ Object

Matches when the value in the field is greater than the given value



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# File 'lib/softlayer/ObjectFilter.rb', line 162

def self.is_greater_than(value)
  filter_criteria('>', value)
end

.is_less_or_equal_to(value) ⇒ Object

Matches when the value in the field is less than or equal to the given value



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# File 'lib/softlayer/ObjectFilter.rb', line 177

def self.is_less_or_equal_to(value)
  filter_criteria('<=', value)
end

.is_less_than(value) ⇒ Object

Matches when the value in the field is less than the given value



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# File 'lib/softlayer/ObjectFilter.rb', line 167

def self.is_less_than(value)
  filter_criteria('<', value)
end

.is_not(value) ⇒ Object

Matches is the value in the field does not exactly equal the value passed in.



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# File 'lib/softlayer/ObjectFilter.rb', line 134

def self.is_not(value)
  filter_criteria('!=', value)
end

.is_not_null ⇒ Object

Matches when the property’s value is not null



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# File 'lib/softlayer/ObjectFilter.rb', line 199

def self.is_not_null()
  { 'operation' => 'not null' }
end

.is_null ⇒ Object

Matches when the property’s value is null



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# File 'lib/softlayer/ObjectFilter.rb', line 194

def self.is_null
  { 'operation' => 'is null' }
end

.matches_ignoring_case(value) ⇒ Object

Maches the given value in a case-insensitive way



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# File 'lib/softlayer/ObjectFilter.rb', line 157

def self.matches_ignoring_case(value)
  filter_criteria('_=', value)
end

.matches_query(query_string) ⇒ Object

Accepts a query string defined by a simple query language. It translates strings in that language into criteria blocks

Object Filter comparisons can be done using operators. The set of accepted operators is found in the OBJECT_FILTER_OPERATORS array. The query string can consist of an operator followed by a space, followed by operand e.g.

"*= smaug"

The query language also accepts some aliases using asterisks in a regular-expression-like way. Those aliases look like:

'value'   Exact value match (translates to '_= value')
'value*'  Begins with value (translates to '^= value')
'*value'  Ends with value (translates to '$= value')
'*value*' Contains value (translates to '*= value')

This method corresponds to the query_filter method in the SoftLayer-Python API.



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# File 'lib/softlayer/ObjectFilter.rb', line 230

def self.matches_query(query_string)
  query = query_string.to_s.strip

  operator = OBJECT_FILTER_OPERATORS.find do | operator_string |
    query[0 ... operator_string.length] == operator_string
  end

  if operator then
    filter_criteria(operator, query[operator.length..-1])
  else
    case query
    when /\A\*(.*)\*\Z/
      contains($1)
    when /\A\*(.*)/
      ends_with($1)
    when /\A(.*)\*\Z/
      begins_with($1)
    else
      matches_ignoring_case(query)
    end #case
  end #if
end

.satisfies_the_raw_condition(condition_hash) ⇒ Object

This is a catch-all criteria matcher that allows for raw object filter conditions not covered by the more convenient methods above. The name is intentionally, annoyingly long and you should use this routine with solid knowledge and great care.



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# File 'lib/softlayer/ObjectFilter.rb', line 206

def self.satisfies_the_raw_condition(condition_hash)
  condition_hash
end