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Contents
module OrientDB::SQL
class Update
include OrientDB::SQL::UtilsMixin
include OrientDB::SQL::ClassClusterParametersMixin
include OrientDB::SQL::FieldsValuesParametersMixin
include OrientDB::SQL::ConditionsParametersMixin
def initialize
@oclass = nil
@cluster = nil
@action = "SET"
@fields = []
@values = []
@conditions = []
end
def action(new_action)
@action = new_action.to_s.upcase
self
end
alias :action! :action
def to_s
(target_sql(:update) + fields_sql + conditions_sql).strip
end
def to_sql_command
OrientDB::SQLCommand.new to_s
end
private
def fields_sql
raise "Missing fields" if @fields.empty?
str = "#{@action} "
if @action == "REMOVE" && @values.empty?
str += @fields.join(', ')
else
raise "Missing values" if @values.empty?
raise "Unbalanced fields & values" unless @values.size == @fields.size
ary = []
@fields.each_with_index do |field, idx|
ary << "#{field} = #{@values[idx]}"
end
str += ary.join(", ")
end
str + ' '
end
def values_sql
"(#{@values.join(', ')})"
end
end
end
Version data entries
17 entries across 17 versions & 1 rubygems