Modulepostgresql-binary-0.15.0.1Haskell2010
PostgreSQL.Binary.Decoding
Synopsis
- value valueParser
- type Value
- value int
- value float4
- value float8
- value bool
- value bytea_strict
- value bytea_lazy
- value text_strict
- value text_lazy
- value char
- value fn
- value numeric
- value uuid
- value inet
- value macaddr
- value json_ast
- value json_bytes
- value jsonb_ast
- value jsonb_bytes
- value date
- value time_int
- value time_float
- value timetz_int
- value timetz_float
- value timestamp_int
- value timestamp_float
- value timestamptz_int
- value timestamptz_float
- value interval_int
- value interval_float
- newtype Array
- value array
- value valueArray
- value nullableValueArray
- value dimensionArray
- data Composite
- value composite
- value valueComposite
- value nullableValueComposite
- value typedValueComposite
- value typedNullableValueComposite
- value hstore
- value enum
- value refine
- value int4range
- value int8range
- value numrange
- value tsrange_int
- value tsrange_float
- value tstzrange_int
- value tstzrange_float
- value daterange
- value int4multirange
- value int8multirange
- value nummultirange
- value tsmultirange_int
- value tsmultirange_float
- value tstzmultirange_int
- value tstzmultirange_float
- value datemultirange
- Packagepostgresql-binary-0.15.0.1
- Exports61
- LanguageHaskell2010
- LicenceMIT
- SourceDecoding.hs
Primitive
BYTEA or any other type in its undecoded form.
BYTEA or any other type in its undecoded form.
Textual
Any of the variable-length character types: BPCHAR, VARCHAR, NAME and TEXT.
Any of the variable-length character types: BPCHAR, VARCHAR, NAME and TEXT.
A UTF-8-decoded char.
Misc
Lifts a custom decoder implementation.
Given a function, which parses a plain UTF-8 JSON string encoded as a byte-array, produces a decoder.
Given a function, which parses a plain UTF-8 JSON string encoded as a byte-array, produces a decoder.
For those wondering, yes, JSONB is encoded as plain JSON string in the binary format of Postgres. Sad, but true.
Time
DATE values decoding.
TIME values decoding for servers, which have integer_datetimes enabled.
TIME values decoding for servers, which don't have integer_datetimes enabled.
TIMETZ values decoding for servers, which have integer_datetimes enabled.
TIMETZ values decoding for servers, which don't have integer_datetimes enabled.
TIMESTAMP values decoding for servers, which have integer_datetimes enabled.
TIMESTAMP values decoding for servers, which don't have integer_datetimes enabled.
TIMESTAMP values decoding for servers, which have integer_datetimes enabled.
TIMESTAMP values decoding for servers, which don't have integer_datetimes enabled.
INTERVAL values decoding for servers, which don't have integer_datetimes enabled.
INTERVAL values decoding for servers, which have integer_datetimes enabled.
Exotic
Array
An efficient generic array decoder, which constructs the result value in place while parsing.
Here's how you can use it to produce a specific array value decoder:
x :: Value [ [ Text ] ]
x =
array (dimensionArray replicateM (fmap catMaybes (dimensionArray replicateM (nullableValueArray text))))
A function for parsing a dimension of an array. Provides support for multi-dimensional arrays.
Accepts:
An implementation of the
replicateMfunction (Control.Monad.replicateM,Data.Vector.replicateM), which determines the output value.A decoder of its components, which can be either another dimensionArray or nullableValueArray.
Composite
Instances2Functor, Applicative
Functor CompositeDefined in postgresql-binary-0.15.0.1 · PostgreSQL.Binary.DecodingApplicative CompositeDefined in postgresql-binary-0.15.0.1 · PostgreSQL.Binary.Decoding
Nullable composite field.
Non-nullable composite field with a checked type OID.
Nullable composite field with a checked type OID.
HStore
A function for generic in place parsing of an HStore value.
Accepts:
An implementation of the
replicateMfunction (Control.Monad.replicateM,Data.Vector.replicateM), which determines how to produce the final datastructure from the rows.A decoder for keys.
A decoder for values.
Here's how you can use it to produce a parser to list:
hstoreAsList :: Value [ ( Text , Maybe Text ) ]
hstoreAsList =
hstore replicateM text text
Given a partial mapping from text to value, produces a decoder of that value.
Given additional constraints when using an existing value decoder, produces a decoder of that value.
Range
int4rangeint8rangenumrangetsrangetsrangetstzrangetstzrangedaterangeMultirange
int4multirangeint8multirangenummultirangetsmultirangetsmultirangetstzmultirangetstzmultirangedatemultirange