Class: Arkenstone::QueryBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/arkenstone/query_builder.rb

Overview

Builder

Builds up the query from the DSL and returns a ruby hash.

Instance Method Summary collapse

Constructor Details

#initialize ⇒ QueryBuilder

Initializes the @hash variable, which is used to build complex queries.



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# File 'lib/arkenstone/query_builder.rb', line 9

def initialize
  @cache = {}
end

Instance Method Details

#_and(*vals) ⇒ Object

Finds entries that match all expressions in the value provided.



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# File 'lib/arkenstone/query_builder.rb', line 46

def _and(*vals)
  evaluate_expression '$and', vals
end

#_gt(val) ⇒ Object

Finds entries who’s values for a column are greater than the value provided.



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# File 'lib/arkenstone/query_builder.rb', line 26

def _gt(val)
  { '$gt' => val }
end

#_gte(val) ⇒ Object

Finds entries who’s values for a column are greater than or equal to the value provided.



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# File 'lib/arkenstone/query_builder.rb', line 31

def _gte(val)
  { '$gte' => val }
end

#_in(value_array) ⇒ Object

Finds the entries that have a value for a column in the provided value_array.



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# File 'lib/arkenstone/query_builder.rb', line 21

def _in(value_array)
  { '$in' => value_array }
end

#_include(values) ⇒ Object

Adds include statements for the database endpoint to parse.



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# File 'lib/arkenstone/query_builder.rb', line 61

def _include(values)
  @cache = evaluate_expression '$include', values
end

#_limit(max) ⇒ Object

Sets a max number of results to return.



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# File 'lib/arkenstone/query_builder.rb', line 66

def _limit(max)
  @cache = evaluate_expression '$limit', max
end

#_lt(val) ⇒ Object

Finds entries who’s values for a column are less than the value provided.



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# File 'lib/arkenstone/query_builder.rb', line 36

def _lt(val)
  { '$lt' => val }
end

#_lte(val) ⇒ Object

Finds entries who’s values for a column are less than or equal to the value provided.



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# File 'lib/arkenstone/query_builder.rb', line 41

def _lte(val)
  { '$lte' => val }
end

#_not(*vals) ⇒ Object

Finds entries that do not match any expression in the value provided.



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# File 'lib/arkenstone/query_builder.rb', line 56

def _not(*vals)
  evaluate_expression '$not', vals
end

#_or(*vals) ⇒ Object

Finds entries that match any expression in the value provided.



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# File 'lib/arkenstone/query_builder.rb', line 51

def _or(*vals)
  evaluate_expression '$or', vals
end

#build ⇒ Object

Main entry point for processing the DSL.



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# File 'lib/arkenstone/query_builder.rb', line 14

def build(&)
  result = instance_eval(&)
  result = flush.merge result unless @cache.empty?
  result.to_json
end