Sha256: 356350f1d499ba4a0f616ca801c9c276d14bc3c09d264a5aeb2ccbaa99f1e818
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Versions: 6
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Stored size: 1.78 KB
Contents
class Card
# Class for generating CQL based on filter params
class FilterQuery
def initialize filter_keys_with_values, extra_cql={}
@filter_cql = Hash.new { |h, k| h[k] = [] }
@rules = yield if block_given?
@rules ||= {}
@filter_keys_with_values = filter_keys_with_values
@extra_cql = extra_cql
prepare_filter_cql
end
def add_to_cql key, value
@filter_cql[key] << value
end
def add_rule key, value
return unless value.present?
case @rules[key]
when Symbol
send("#{@rules[key]}_rule", key, value)
when Proc
@rules[key].call(key, value).each do |cql_key, val|
@filter_cql[cql_key] << val
end
else
send "#{key}_cql", value
end
end
def to_cql
@cql = {}
@filter_cql.each do |cql_key, values|
next if values.empty?
case cql_key
when :right_plus, :left_plus, :type
merge_using_and cql_key, values
else
merge_using_array cql_key, values
end
end
@cql.merge @extra_cql
end
private
def prepare_filter_cql
@filter_keys_with_values.each do |key, values|
add_rule key, values
end
end
def merge_using_array cql_key, values
@cql[cql_key] = values.one? ? values.first : values
end
def merge_using_and cql_key, values
hash = build_nested_hash cql_key, values
@cql.deep_merge! hash
end
# nest values with the same key using :and
def build_nested_hash key, values
return { key => values[0] } if values.one?
val = values.pop
{ key => val, and: build_nested_hash(key, values) }
end
def name_cql name
return unless name.present?
@filter_cql[:name] = ["match", name]
end
end
end
Version data entries
6 entries across 6 versions & 2 rubygems