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# frozen_string_literal: true
module Scim
class Visitor
include Varkon
VISITORS = {
and: :visit_and,
co: :visit_contains,
eq: :visit_equals,
ew: :visit_ends_with,
ge: :visit_greater_than_equals,
gt: :visit_greater_than,
le: :visit_less_than_equals,
lt: :visit_less_than,
ne: :visit_not_equals,
or: :visit_or,
pr: :visit_presence,
sw: :visit_starts_with,
}.freeze
def initialize(clazz, mapper = {})
@clazz = clazz
@mapper = mapper
end
def visit(node)
visitor_for(node).call(node)
end
private
def visitor_for(node)
method(VISITORS.fetch(node.operator, :visit_unknown))
end
def visit_and(node)
visit(node.left).merge(visit(node.right))
end
def visit_or(node)
visit(node.left).or(visit(node.right))
end
def visit_equals(node)
query_for(node, attr_for(node) => node.value)
end
def visit_not_equals(node)
if node.not?
@clazz.where(attr_for(node) => node.value)
else
@clazz.where.not(attr_for(node) => node.value)
end
end
def visit_contains(node)
query_for(
node,
"#{attr_for(node)} LIKE ?",
"%#{escape_sql_wildcards(node.value)}%"
)
end
def visit_starts_with(node)
query_for(
node,
"#{attr_for(node)} LIKE ?",
"#{escape_sql_wildcards(node.value)}%"
)
end
def visit_ends_with(node)
query_for(
node,
"#{attr_for(node)} LIKE ?",
"%#{escape_sql_wildcards(node.value)}"
)
end
def visit_greater_than(node)
query_for(node, "#{attr_for(node)} > ?", cast_value_from(node))
end
def visit_greater_than_equals(node)
query_for(node, "#{attr_for(node)} >= ?", cast_value_from(node))
end
def visit_less_than(node)
query_for(node, "#{attr_for(node)} < ?", cast_value_from(node))
end
def visit_less_than_equals(node)
query_for(node, "#{attr_for(node)} <= ?", cast_value_from(node))
end
def visit_presence(node)
if node.not?
@clazz.where(attr_for(node) => nil)
else
@clazz.where.not(attr_for(node) => nil)
end
end
def visit_unknown(_node)
@clazz.none
end
def cast_value_from(node)
case @clazz.columns_hash[attr_for(node).to_s].type
when :datetime
DateTime.parse(node.value).utc
else
node.value.to_s
end
end
def attr_for(node)
@mapper.fetch(node.attribute, node.attribute)
end
def query_for(node, *conditions)
node.not? ? @clazz.where.not(*conditions) : @clazz.where(*conditions)
end
end
end
|
