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Contents
grammar SQLKeyValuePair
include SQLPrimitives
include SQLRowSupport
rule key_value_pair
one_column_name optional_spaces joiner_or_null {
def eval
results = joiner_or_null.eval
klass = Expressions.find_class_for(results[:joiner])
if value = results[:value]
klass.new(one_column_name.eval.to_sym, results[:value])
else
klass.new(one_column_name.eval.to_sym)
end
end
}
end
rule joiner_or_null
a_null / joiner_with_value
end
rule a_null
is_not_null / is_null
end
rule is_not_null
"IS" SPACE "NOT" SPACE "NULL" {
def eval
{ :joiner => :"IS NOT NULL" }
end
}
end
rule is_null
"IS" SPACE "NULL" {
def eval
{ :joiner => :"IS NULL" }
end
}
end
rule joiner_with_value
condition_joiner optional_spaces primitive {
def eval
{
:joiner => condition_joiner.eval,
:value => primitive.eval
}
end
}
end
rule condition_joiner
greater_than_or_equal /
less_than_or_equal /
equals /
not_equals /
less_than /
greater_than /
like
end
rule less_than_or_equal
"<=" { def eval; :<=; end }
end
rule greater_than_or_equal
">=" { def eval; :>= end }
end
rule less_than
"<" { def eval; :< end }
end
rule greater_than
">" { def eval; :> end }
end
rule not_equals
"!=" { def eval; :"!=" end }
end
rule equals
"=" { def eval; :"=" end }
end
rule like
"LIKE" { def eval; :"LIKE" end }
end
end
Version data entries
12 entries across 12 versions & 1 rubygems