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binder.cr
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binder.cr
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require "db"
module Cassandra
module DBApi
class ValueBinder
class BindError < DB::Error
end
def initialize(@cass_stmt : LibCass::CassStatement, @i : Int32)
end
def bind(any)
cass_error = do_bind(any)
if cass_error != LibCass::CassError::Ok
val_s = any.inspect
val_s = "#{val_s[0..1000]}…" if val_s.size > 1500
raise BindError.new("#{cass_error}: passed\n#{val_s}\n" \
"of type #{typeof(any)} at index #{@i}")
end
end
private def do_bind(val : Any)
do_bind(val.raw)
end
private def do_bind(val : Nil)
LibCass.statement_bind_null(@cass_stmt, @i)
end
private def do_bind(val : Bool)
cass_value = val ? LibCass::BoolT::True : LibCass::BoolT::False
LibCass.statement_bind_bool(@cass_stmt, @i, cass_value)
end
private def do_bind(val : Float32)
LibCass.statement_bind_float(@cass_stmt, @i, val)
end
private def do_bind(val : Float64)
LibCass.statement_bind_double(@cass_stmt, @i, val)
end
private def do_bind(val : Int8)
LibCass.statement_bind_int8(@cass_stmt, @i, val)
end
private def do_bind(val : Int16)
LibCass.statement_bind_int16(@cass_stmt, @i, val)
end
private def do_bind(val : Int32)
LibCass.statement_bind_int32(@cass_stmt, @i, val)
end
private def do_bind(val : Int64)
LibCass.statement_bind_int64(@cass_stmt, @i, val)
end
private def do_bind(val : Bytes)
LibCass.statement_bind_bytes(@cass_stmt, @i, val, val.size)
end
private def do_bind(val : String)
LibCass.statement_bind_string_n(@cass_stmt, @i, val, val.bytesize)
end
private def do_bind(val : DBApi::Date)
LibCass.statement_bind_uint32(@cass_stmt, @i, val.days)
end
private def do_bind(val : DBApi::Time)
LibCass.statement_bind_int64(@cass_stmt, @i, val.total_nanoseconds)
end
private def do_bind(val : ::Time)
ms = (val - EPOCH_START).total_milliseconds.to_i64
LibCass.statement_bind_int64(@cass_stmt, @i, ms)
end
private def do_bind(val : DBApi::Uuid | DBApi::TimeUuid)
LibCass.statement_bind_uuid(@cass_stmt, @i, val)
end
private def do_bind(vals : Array)
cass_collection = LibCass.collection_new(
LibCass::CassCollectionType::CollectionTypeList,
vals.size
)
begin
vals.each { |val| append(cass_collection, val) }
LibCass.statement_bind_collection(@cass_stmt, @i, cass_collection)
ensure
LibCass.collection_free(cass_collection)
end
end
private def do_bind(vals : Set)
cass_collection = LibCass.collection_new(
LibCass::CassCollectionType::CollectionTypeSet,
vals.size
)
begin
vals.each { |val| append(cass_collection, val) }
LibCass.statement_bind_collection(@cass_stmt, @i, cass_collection)
ensure
LibCass.collection_free(cass_collection)
end
end
private def do_bind(vals : Hash(Any, Any))
cass_map = LibCass.collection_new(
LibCass::CassCollectionType::CollectionTypeMap,
vals.size
)
begin
vals.each { |entry| entry.each { |v| append(cass_map, v.raw) } }
LibCass.statement_bind_collection(@cass_stmt, @i, cass_map)
ensure
LibCass.collection_free(cass_map)
end
end
private def append(cass_coll : LibCass::CassCollection, val : Nil)
raise BindError.new("Cassandra does not support NULLs in collections")
end
private def append(cass_coll : LibCass::CassCollection, val : Bool)
cass_value = val ? LibCass::BoolT::True : LibCass::BoolT::False
LibCass.collection_append_bool(cass_coll, cass_value)
end
private def append(cass_coll : LibCass::CassCollection, val : Int8)
LibCass.collection_append_int8(cass_coll, val)
end
private def append(cass_coll : LibCass::CassCollection, val : Int16)
LibCass.collection_append_int16(cass_coll, val)
end
private def append(cass_coll : LibCass::CassCollection, val : Int32)
LibCass.collection_append_int32(cass_coll, val)
end
private def append(cass_coll : LibCass::CassCollection, val : Int64)
LibCass.collection_append_int64(cass_coll, val)
end
private def append(cass_coll : LibCass::CassCollection, val : Float32)
LibCass.collection_append_float(cass_coll, val)
end
private def append(cass_coll : LibCass::CassCollection, val : Float64)
LibCass.collection_append_double(cass_coll, val)
end
private def append(cass_coll : LibCass::CassCollection, val : Bytes)
# LibCass.statement_bind_bytes(@cass_stmt, @i, val, val.size)
raise NotImplementedError.new("Test first")
end
private def append(cass_coll : LibCass::CassCollection, val : String)
LibCass.collection_append_string_n(cass_coll, val, val.size)
end
private def append(cass_coll : LibCass::CassCollection, val : DBApi::Date)
LibCass.collection_append_uint32(cass_coll, val.days)
end
private def append(cass_coll : LibCass::CassCollection, val : ::Time)
ms = (val - EPOCH_START).total_milliseconds.to_i64
LibCass.collection_append_int64(cass_coll, ms)
end
private def append(cass_coll : LibCass::CassCollection, val : DBApi::Time)
LibCass.collection_append_int64(cass_coll, val.total_nanoseconds)
end
private def append(cass_coll : LibCass::CassCollection,
val : DBApi::Uuid | DBApi::TimeUuid)
LibCass.collection_append_uuid(cass_coll, val)
end
private def append(cass_coll : LibCass::CassCollection, vals : Array)
cass_list = LibCass.collection_new(
LibCass::CassCollectionType::CollectionTypeList,
vals.size
)
begin
vals.each { |item| append(cass_list, item) }
LibCass.collection_append_collection(cass_coll, cass_list)
ensure
LibCass.collection_free(cass_list)
end
end
private def append(cass_coll : LibCass::CassCollection, vals : Set)
cass_set = LibCass.collection_new(
LibCass::CassCollectionType::CollectionTypeSet,
vals.size
)
begin
vals.each { |item| append(cass_set, item) }
LibCass.collection_append_collection(cass_coll, cass_set)
ensure
LibCass.collection_free(cass_set)
end
end
private def append(cass_coll : LibCass::CassCollection,
vals : Hash(Any, Any))
cass_map = LibCass.collection_new(
LibCass::CassCollectionType::CollectionTypeMap,
vals.size
)
begin
vals.each { |entry| entry.each { |v| append(cass_map, v.raw) } }
LibCass.collection_append_collection(cass_coll, cass_map)
ensure
LibCass.collection_free(cass_map)
end
end
private def append(cass_coll : LibCass::CassCollection, any : Any)
append(cass_coll, any.raw)
end
end
end
end