758 lines
23 KiB
Rust
758 lines
23 KiB
Rust
//! Traits dealing with Postgres data types
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#[macro_escape];
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extern mod extra;
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use extra::time::Timespec;
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use extra::json;
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use extra::json::Json;
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use extra::uuid::Uuid;
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use std::hashmap::HashMap;
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use std::io::{MemWriter, BufReader};
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use std::io::util::LimitReader;
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use std::str;
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use std::vec;
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use self::array::{Array, ArrayBase, DimensionInfo};
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use self::range::{RangeBound, Inclusive, Exclusive, Range};
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pub mod array;
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pub mod range;
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/// A Postgres OID
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pub type Oid = u32;
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// Values from pg_type.h
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static BOOLOID: Oid = 16;
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static BYTEAOID: Oid = 17;
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static CHAROID: Oid = 18;
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static INT8OID: Oid = 20;
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static INT2OID: Oid = 21;
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static INT4OID: Oid = 23;
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static TEXTOID: Oid = 25;
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static JSONOID: Oid = 114;
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static JSONARRAYOID: Oid = 199;
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static FLOAT4OID: Oid = 700;
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static FLOAT8OID: Oid = 701;
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static BOOLARRAYOID: Oid = 1000;
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static BYTEAARRAYOID: Oid = 1001;
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static CHARARRAYOID: Oid = 1002;
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static INT2ARRAYOID: Oid = 1005;
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static INT4ARRAYOID: Oid = 1007;
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static TEXTARRAYOID: Oid = 1009;
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static BPCHARARRAYOID: Oid = 1014;
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static VARCHARARRAYOID: Oid = 1015;
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static INT8ARRAYOID: Oid = 1016;
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static FLOAT4ARRAYOID: Oid = 1021;
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static FLAOT8ARRAYOID: Oid = 1022;
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static BPCHAROID: Oid = 1042;
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static VARCHAROID: Oid = 1043;
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static TIMESTAMPOID: Oid = 1114;
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static TIMESTAMPARRAYOID: Oid = 1115;
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static TIMESTAMPZOID: Oid = 1184;
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static TIMESTAMPZARRAYOID: Oid = 1185;
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static UUIDOID: Oid = 2950;
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static UUIDARRAYOID: Oid = 2951;
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static INT4RANGEOID: Oid = 3904;
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static INT4RANGEARRAYOID: Oid = 3905;
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static TSRANGEOID: Oid = 3908;
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static TSRANGEARRAYOID: Oid = 3909;
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static TSTZRANGEOID: Oid = 3910;
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static TSTZRANGEARRAYOID: Oid = 3911;
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static INT8RANGEOID: Oid = 3926;
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static INT8RANGEARRAYOID: Oid = 3927;
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static USEC_PER_SEC: i64 = 1_000_000;
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static NSEC_PER_USEC: i64 = 1_000;
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// Number of seconds from 1970-01-01 to 2000-01-01
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static TIME_SEC_CONVERSION: i64 = 946684800;
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static RANGE_UPPER_UNBOUNDED: i8 = 0b0001_0000;
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static RANGE_LOWER_UNBOUNDED: i8 = 0b0000_1000;
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static RANGE_UPPER_INCLUSIVE: i8 = 0b0000_0100;
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static RANGE_LOWER_INCLUSIVE: i8 = 0b0000_0010;
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static RANGE_EMPTY: i8 = 0b0000_0001;
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macro_rules! make_postgres_type(
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($($doc:attr $oid:ident => $variant:ident $(member $member:ident)*),+) => (
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/// A Postgres type
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#[deriving(Eq)]
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pub enum PostgresType {
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$(
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$doc
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$variant,
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)+
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/// An unknown type
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PgUnknownType {
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/// The name of the type
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name: ~str,
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/// The OID of the type
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oid: Oid
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}
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}
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impl PostgresType {
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#[doc(hidden)]
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pub fn from_oid(oid: Oid) -> PostgresType {
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match oid {
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$($oid => $variant,)+
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// We have to load an empty string now, it'll get filled in later
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oid => PgUnknownType { name: ~"", oid: oid }
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}
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}
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#[doc(hidden)]
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pub fn to_oid(&self) -> Oid {
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match *self {
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$($variant => $oid,)+
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PgUnknownType { oid, .. } => oid
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}
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}
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fn member_type(&self) -> PostgresType {
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match *self {
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$(
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$($variant => $member,)*
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)+
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_ => unreachable!()
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}
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}
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/// Returns the wire format needed for the value of `self`.
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pub fn result_format(&self) -> Format {
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match *self {
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PgUnknownType { name: ~"hstore", .. } => Binary,
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PgUnknownType { .. } => Text,
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_ => Binary
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}
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}
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}
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)
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)
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make_postgres_type!(
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#[doc="BOOL"]
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BOOLOID => PgBool,
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#[doc="BYTEA"]
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BYTEAOID => PgByteA,
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#[doc="\"char\""]
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CHAROID => PgChar,
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#[doc="INT8/BIGINT"]
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INT8OID => PgInt8,
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#[doc="INT2/SMALLINT"]
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INT2OID => PgInt2,
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#[doc="INT4/INT"]
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INT4OID => PgInt4,
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#[doc="TEXT"]
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TEXTOID => PgText,
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#[doc="JSON"]
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JSONOID => PgJson,
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#[doc="JSON[]"]
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JSONARRAYOID => PgJsonArray member PgJson,
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#[doc="FLOAT4/REAL"]
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FLOAT4OID => PgFloat4,
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#[doc="FLOAT8/DOUBLE PRECISION"]
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FLOAT8OID => PgFloat8,
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#[doc="BOOL[]"]
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BOOLARRAYOID => PgBoolArray member PgBool,
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#[doc="BYTEA[]"]
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BYTEAARRAYOID => PgByteAArray member PgByteA,
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#[doc="\"char\"[]"]
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CHARARRAYOID => PgCharArray member PgChar,
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#[doc="INT2[]"]
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INT2ARRAYOID => PgInt2Array member PgInt2,
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#[doc="INT4[]"]
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INT4ARRAYOID => PgInt4Array member PgInt4,
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#[doc="TEXT[]"]
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TEXTARRAYOID => PgTextArray member PgText,
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#[doc="CHAR(n)[]"]
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BPCHARARRAYOID => PgCharNArray member PgCharN,
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#[doc="VARCHAR[]"]
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VARCHARARRAYOID => PgVarcharArray member PgVarchar,
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#[doc="INT8[]"]
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INT8ARRAYOID => PgInt8Array member PgInt8,
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#[doc="FLOAT4[]"]
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FLOAT4ARRAYOID => PgFloat4Array member PgFloat4,
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#[doc="FLOAT8[]"]
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FLAOT8ARRAYOID => PgFloat8Array member PgFloat8,
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#[doc="TIMESTAMP"]
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TIMESTAMPOID => PgTimestamp,
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#[doc="TIMESTAMP[]"]
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TIMESTAMPARRAYOID => PgTimestampArray member PgTimestamp,
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#[doc="TIMESTAMP WITH TIME ZONE"]
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TIMESTAMPZOID => PgTimestampTZ,
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#[doc="TIMESTAMP WITH TIME ZONE[]"]
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TIMESTAMPZARRAYOID => PgTimestampTZArray member PgTimestampTZ,
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#[doc="CHAR(n)/CHARACTER(n)"]
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BPCHAROID => PgCharN,
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#[doc="VARCHAR/CHARACTER VARYING"]
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VARCHAROID => PgVarchar,
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#[doc="UUID"]
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UUIDOID => PgUuid,
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#[doc="UUID[]"]
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UUIDARRAYOID => PgUuidArray member PgUuid,
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#[doc="INT4RANGE"]
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INT4RANGEOID => PgInt4Range,
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#[doc="INT4RANGE[]"]
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INT4RANGEARRAYOID => PgInt4RangeArray member PgInt4Range,
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#[doc="TSRANGE"]
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TSRANGEOID => PgTsRange,
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#[doc="TSRANGE[]"]
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TSRANGEARRAYOID => PgTsRangeArray member PgTsRange,
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#[doc="TSTZRANGE"]
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TSTZRANGEOID => PgTstzRange,
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#[doc="TSTZRANGE[]"]
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TSTZRANGEARRAYOID => PgTstzRangeArray member PgTstzRange,
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#[doc="INT8RANGE"]
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INT8RANGEOID => PgInt8Range,
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#[doc="INT8RANGE[]"]
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INT8RANGEARRAYOID => PgInt8RangeArray member PgInt8Range
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)
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/// The wire format of a Postgres value
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pub enum Format {
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/// A user-readable string format
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Text = 0,
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/// A machine-readable binary format
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Binary = 1
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}
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macro_rules! check_types(
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($($expected:pat)|+, $actual:ident) => (
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match $actual {
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$(&$expected)|+ => (),
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actual => fail!("Invalid Postgres type {:?}", actual)
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}
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)
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)
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/// A trait for types that can be created from a Postgres value
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pub trait FromSql {
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/// Creates a new value of this type from a buffer of Postgres data.
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///
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/// If the value was `NULL`, the buffer will be `None`.
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///
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/// # Failure
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///
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/// Fails if this type can not be created from the provided Postgres type.
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fn from_sql(ty: &PostgresType, raw: &Option<~[u8]>) -> Self;
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}
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#[doc(hidden)]
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trait RawFromSql {
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fn raw_from_sql<R: Reader>(len: uint, raw: &mut R) -> Self;
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}
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macro_rules! raw_from_impl(
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($t:ty, $f:ident) => (
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impl RawFromSql for $t {
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fn raw_from_sql<R: Reader>(_len: uint, raw: &mut R) -> $t {
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raw.$f()
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}
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}
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)
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)
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impl RawFromSql for bool {
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fn raw_from_sql<R: Reader>(_len: uint, raw: &mut R) -> bool {
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raw.read_u8() != 0
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}
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}
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impl RawFromSql for ~[u8] {
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fn raw_from_sql<R: Reader>(len: uint, raw: &mut R) -> ~[u8] {
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raw.read_bytes(len)
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}
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}
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impl RawFromSql for ~str {
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fn raw_from_sql<R: Reader>(len: uint, raw: &mut R) -> ~str {
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str::from_utf8_owned(raw.read_bytes(len)).unwrap()
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}
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}
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raw_from_impl!(i8, read_i8)
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raw_from_impl!(i16, read_be_i16)
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raw_from_impl!(i32, read_be_i32)
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raw_from_impl!(i64, read_be_i64)
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raw_from_impl!(f32, read_be_f32)
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raw_from_impl!(f64, read_be_f64)
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impl RawFromSql for Timespec {
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fn raw_from_sql<R: Reader>(_len: uint, raw: &mut R) -> Timespec {
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let t = raw.read_be_i64();
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let mut sec = t / USEC_PER_SEC + TIME_SEC_CONVERSION;
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let mut usec = t % USEC_PER_SEC;
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if usec < 0 {
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sec -= 1;
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usec = USEC_PER_SEC + usec;
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}
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Timespec::new(sec, (usec * NSEC_PER_USEC) as i32)
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}
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}
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impl RawFromSql for Uuid {
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fn raw_from_sql<R: Reader>(len: uint, raw: &mut R) -> Uuid {
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Uuid::from_bytes(raw.read_bytes(len)).unwrap()
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}
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}
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macro_rules! from_range_impl(
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($($oid:ident)|+, $t:ty) => (
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impl RawFromSql for Range<$t> {
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fn raw_from_sql<R: Reader>(_len: uint, rdr: &mut R) -> Range<$t> {
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let t = rdr.read_i8();
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if t & RANGE_EMPTY != 0 {
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Range::empty()
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} else {
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let lower = match t & RANGE_LOWER_UNBOUNDED {
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0 => {
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let type_ = match t & RANGE_LOWER_INCLUSIVE {
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0 => Exclusive,
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_ => Inclusive
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};
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let len = rdr.read_be_i32() as uint;
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Some(RangeBound::new(
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RawFromSql::raw_from_sql(len, rdr), type_))
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}
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_ => None
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};
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let upper = match t & RANGE_UPPER_UNBOUNDED {
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0 => {
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let type_ = match t & RANGE_UPPER_INCLUSIVE {
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0 => Exclusive,
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_ => Inclusive
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};
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let len = rdr.read_be_i32() as uint;
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Some(RangeBound::new(
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RawFromSql::raw_from_sql(len, rdr), type_))
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}
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_ => None
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};
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Range::new(lower, upper)
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}
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}
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}
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)
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)
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from_range_impl!(PgInt4Range, i32)
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from_range_impl!(PgInt8Range, i64)
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from_range_impl!(PgTsRange | PgTstzRange, Timespec)
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impl RawFromSql for Json {
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fn raw_from_sql<R: Reader>(len: uint, raw: &mut R) -> Json {
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let mut reader = LimitReader::new(raw, len);
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json::from_reader(&mut reader as &mut Reader).unwrap()
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}
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}
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macro_rules! from_map_impl(
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($($expected:pat)|+, $t:ty, $blk:expr) => (
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impl FromSql for Option<$t> {
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fn from_sql(ty: &PostgresType, raw: &Option<~[u8]>) -> Option<$t> {
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check_types!($($expected)|+, ty)
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raw.as_ref().map($blk)
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}
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}
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impl FromSql for $t {
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fn from_sql(ty: &PostgresType, raw: &Option<~[u8]>) -> $t {
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// FIXME when you can specify Self types properly
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let ret: Option<$t> = FromSql::from_sql(ty, raw);
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ret.unwrap()
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}
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}
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)
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)
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macro_rules! from_raw_from_impl(
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($($expected:pat)|+, $t:ty) => (
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from_map_impl!($($expected)|+, $t, |buf| {
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let mut reader = BufReader::new(buf.as_slice());
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RawFromSql::raw_from_sql(buf.len(), &mut reader)
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})
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)
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)
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from_raw_from_impl!(PgBool, bool)
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from_raw_from_impl!(PgByteA, ~[u8])
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from_raw_from_impl!(PgVarchar | PgText | PgCharN, ~str)
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from_raw_from_impl!(PgChar, i8)
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from_raw_from_impl!(PgInt2, i16)
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from_raw_from_impl!(PgInt4, i32)
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from_raw_from_impl!(PgInt8, i64)
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from_raw_from_impl!(PgFloat4, f32)
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from_raw_from_impl!(PgFloat8, f64)
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from_raw_from_impl!(PgUuid, Uuid)
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from_raw_from_impl!(PgJson, Json)
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from_raw_from_impl!(PgTimestamp | PgTimestampTZ, Timespec)
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from_raw_from_impl!(PgInt4Range, Range<i32>)
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from_raw_from_impl!(PgInt8Range, Range<i64>)
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from_raw_from_impl!(PgTsRange | PgTstzRange, Range<Timespec>)
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macro_rules! from_array_impl(
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($($oid:ident)|+, $t:ty) => (
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from_map_impl!($($oid)|+, ArrayBase<Option<$t>>, |buf| {
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let mut rdr = BufReader::new(buf.as_slice());
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let ndim = rdr.read_be_i32() as uint;
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let _has_null = rdr.read_be_i32() == 1;
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let _element_type: Oid = rdr.read_be_u32();
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let mut dim_info = vec::with_capacity(ndim);
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for _ in range(0, ndim) {
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dim_info.push(DimensionInfo {
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len: rdr.read_be_i32() as uint,
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lower_bound: rdr.read_be_i32() as int
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});
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}
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let nele = dim_info.iter().fold(1, |acc, info| acc * info.len);
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let mut elements = vec::with_capacity(nele);
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for _ in range(0, nele) {
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let len = rdr.read_be_i32();
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if len < 0 {
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elements.push(None);
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} else {
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elements.push(Some(RawFromSql::raw_from_sql(len as uint,
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&mut rdr)));
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}
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}
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ArrayBase::from_raw(elements, dim_info)
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})
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)
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)
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from_array_impl!(PgBoolArray, bool)
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from_array_impl!(PgByteAArray, ~[u8])
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from_array_impl!(PgCharArray, i8)
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from_array_impl!(PgInt2Array, i16)
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from_array_impl!(PgInt4Array, i32)
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from_array_impl!(PgTextArray | PgCharNArray | PgVarcharArray, ~str)
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from_array_impl!(PgInt8Array, i64)
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from_array_impl!(PgTimestampArray | PgTimestampTZArray, Timespec)
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from_array_impl!(PgJsonArray, Json)
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from_array_impl!(PgFloat4Array, f32)
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from_array_impl!(PgFloat8Array, f64)
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from_array_impl!(PgUuidArray, Uuid)
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from_array_impl!(PgInt4RangeArray, Range<i32>)
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from_array_impl!(PgTsRangeArray | PgTstzRangeArray, Range<Timespec>)
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from_array_impl!(PgInt8RangeArray, Range<i64>)
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from_map_impl!(PgUnknownType { name: ~"hstore", .. },
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HashMap<~str, Option<~str>>, |buf| {
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let mut rdr = BufReader::new(buf.as_slice());
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let mut map = HashMap::new();
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let count = rdr.read_be_i32();
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for _ in range(0, count) {
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let key_len = rdr.read_be_i32();
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let key = str::from_utf8_owned(rdr.read_bytes(key_len as uint)).unwrap();
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let val_len = rdr.read_be_i32();
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let val = if val_len < 0 {
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None
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} else {
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Some(str::from_utf8_owned(rdr.read_bytes(val_len as uint)).unwrap())
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};
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map.insert(key, val);
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}
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map
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})
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/// A trait for types that can be converted into Postgres values
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pub trait ToSql {
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/// Converts the value of `self` into a format appropriate for the Postgres
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/// backend.
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///
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/// # Failure
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///
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/// Fails if this type cannot be converted into the specified Postgres
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/// type.
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fn to_sql(&self, ty: &PostgresType) -> (Format, Option<~[u8]>);
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}
|
|
|
|
#[doc(hidden)]
|
|
trait RawToSql {
|
|
fn raw_to_sql<W: Writer>(&self, w: &mut W);
|
|
}
|
|
|
|
macro_rules! raw_to_impl(
|
|
($t:ty, $f:ident) => (
|
|
impl RawToSql for $t {
|
|
fn raw_to_sql<W: Writer>(&self, w: &mut W) {
|
|
w.$f(*self)
|
|
}
|
|
}
|
|
)
|
|
)
|
|
|
|
impl RawToSql for bool {
|
|
fn raw_to_sql<W: Writer>(&self, w: &mut W) {
|
|
w.write_u8(*self as u8)
|
|
}
|
|
}
|
|
|
|
impl RawToSql for ~[u8] {
|
|
fn raw_to_sql<W: Writer>(&self, w: &mut W) {
|
|
w.write(self.as_slice())
|
|
}
|
|
}
|
|
|
|
impl RawToSql for ~str {
|
|
fn raw_to_sql<W: Writer>(&self, w: &mut W) {
|
|
w.write(self.as_bytes())
|
|
}
|
|
}
|
|
|
|
raw_to_impl!(i8, write_i8)
|
|
raw_to_impl!(i16, write_be_i16)
|
|
raw_to_impl!(i32, write_be_i32)
|
|
raw_to_impl!(i64, write_be_i64)
|
|
raw_to_impl!(f32, write_be_f32)
|
|
raw_to_impl!(f64, write_be_f64)
|
|
|
|
impl RawToSql for Timespec {
|
|
fn raw_to_sql<W: Writer>(&self, w: &mut W) {
|
|
let t = (self.sec - TIME_SEC_CONVERSION) * USEC_PER_SEC
|
|
+ self.nsec as i64 / NSEC_PER_USEC;
|
|
w.write_be_i64(t);
|
|
}
|
|
}
|
|
|
|
impl RawToSql for Uuid {
|
|
fn raw_to_sql<W: Writer>(&self, w: &mut W) {
|
|
w.write(self.to_bytes())
|
|
}
|
|
}
|
|
|
|
macro_rules! to_range_impl(
|
|
($($oid:ident)|+, $t:ty) => (
|
|
impl RawToSql for Range<$t> {
|
|
fn raw_to_sql<W: Writer>(&self, buf: &mut W) {
|
|
let mut tag = 0;
|
|
if self.is_empty() {
|
|
tag |= RANGE_EMPTY;
|
|
} else {
|
|
match self.lower() {
|
|
None => tag |= RANGE_LOWER_UNBOUNDED,
|
|
Some(&RangeBound { type_: Inclusive, .. }) =>
|
|
tag |= RANGE_LOWER_INCLUSIVE,
|
|
_ => {}
|
|
}
|
|
match self.upper() {
|
|
None => tag |= RANGE_UPPER_UNBOUNDED,
|
|
Some(&RangeBound { type_: Inclusive, .. }) =>
|
|
tag |= RANGE_UPPER_INCLUSIVE,
|
|
_ => {}
|
|
}
|
|
}
|
|
|
|
buf.write_i8(tag);
|
|
|
|
match self.lower() {
|
|
Some(bound) => {
|
|
let mut inner_buf = MemWriter::new();
|
|
bound.value.raw_to_sql(&mut inner_buf);
|
|
let inner_buf = inner_buf.unwrap();
|
|
buf.write_be_i32(inner_buf.len() as i32);
|
|
buf.write(inner_buf);
|
|
}
|
|
None => {}
|
|
}
|
|
match self.upper() {
|
|
Some(bound) => {
|
|
let mut inner_buf = MemWriter::new();
|
|
bound.value.raw_to_sql(&mut inner_buf);
|
|
let inner_buf = inner_buf.unwrap();
|
|
buf.write_be_i32(inner_buf.len() as i32);
|
|
buf.write(inner_buf);
|
|
}
|
|
None => {}
|
|
}
|
|
}
|
|
}
|
|
)
|
|
)
|
|
|
|
to_range_impl!(PgInt4Range, i32)
|
|
to_range_impl!(PgInt8Range, i64)
|
|
to_range_impl!(PgTsRange | PgTstzRange, Timespec)
|
|
|
|
impl RawToSql for Json {
|
|
fn raw_to_sql<W: Writer>(&self, raw: &mut W) {
|
|
self.to_writer(raw as &mut Writer)
|
|
}
|
|
}
|
|
|
|
macro_rules! to_option_impl(
|
|
($($oid:pat)|+, $t:ty) => (
|
|
impl ToSql for Option<$t> {
|
|
fn to_sql(&self, ty: &PostgresType) -> (Format, Option<~[u8]>) {
|
|
check_types!($($oid)|+, ty)
|
|
|
|
match *self {
|
|
None => (Text, None),
|
|
Some(ref val) => val.to_sql(ty)
|
|
}
|
|
}
|
|
}
|
|
)
|
|
)
|
|
|
|
macro_rules! to_option_impl_lifetime(
|
|
($($oid:pat)|+, $t:ty) => (
|
|
impl<'a> ToSql for Option<$t> {
|
|
fn to_sql(&self, ty: &PostgresType) -> (Format, Option<~[u8]>) {
|
|
check_types!($($oid)|+, ty)
|
|
|
|
match *self {
|
|
None => (Text, None),
|
|
Some(ref val) => val.to_sql(ty)
|
|
}
|
|
}
|
|
}
|
|
)
|
|
)
|
|
|
|
macro_rules! to_raw_to_impl(
|
|
($($oid:ident)|+, $t:ty) => (
|
|
impl ToSql for $t {
|
|
fn to_sql(&self, ty: &PostgresType) -> (Format, Option<~[u8]>) {
|
|
check_types!($($oid)|+, ty)
|
|
|
|
let mut writer = MemWriter::new();
|
|
self.raw_to_sql(&mut writer);
|
|
(Binary, Some(writer.unwrap()))
|
|
}
|
|
}
|
|
|
|
to_option_impl!($($oid)|+, $t)
|
|
)
|
|
)
|
|
|
|
to_raw_to_impl!(PgBool, bool)
|
|
to_raw_to_impl!(PgByteA, ~[u8])
|
|
to_raw_to_impl!(PgVarchar | PgText | PgCharN, ~str)
|
|
to_raw_to_impl!(PgJson, Json)
|
|
to_raw_to_impl!(PgChar, i8)
|
|
to_raw_to_impl!(PgInt2, i16)
|
|
to_raw_to_impl!(PgInt4, i32)
|
|
to_raw_to_impl!(PgInt8, i64)
|
|
to_raw_to_impl!(PgFloat4, f32)
|
|
to_raw_to_impl!(PgFloat8, f64)
|
|
to_raw_to_impl!(PgInt4Range, Range<i32>)
|
|
to_raw_to_impl!(PgInt8Range, Range<i64>)
|
|
to_raw_to_impl!(PgTsRange | PgTstzRange, Range<Timespec>)
|
|
|
|
impl<'a> ToSql for &'a str {
|
|
fn to_sql(&self, ty: &PostgresType) -> (Format, Option<~[u8]>) {
|
|
check_types!(PgVarchar | PgText | PgCharN, ty)
|
|
(Text, Some(self.as_bytes().to_owned()))
|
|
}
|
|
}
|
|
|
|
to_option_impl_lifetime!(PgVarchar | PgText | PgCharN, &'a str)
|
|
|
|
impl<'a> ToSql for &'a [u8] {
|
|
fn to_sql(&self, ty: &PostgresType) -> (Format, Option<~[u8]>) {
|
|
check_types!(PgByteA, ty)
|
|
(Binary, Some(self.to_owned()))
|
|
}
|
|
}
|
|
|
|
to_option_impl_lifetime!(PgByteA, &'a [u8])
|
|
|
|
to_raw_to_impl!(PgTimestamp | PgTimestampTZ, Timespec)
|
|
to_raw_to_impl!(PgUuid, Uuid)
|
|
|
|
macro_rules! to_array_impl(
|
|
($($oid:ident)|+, $t:ty) => (
|
|
impl ToSql for ArrayBase<Option<$t>> {
|
|
fn to_sql(&self, ty: &PostgresType) -> (Format, Option<~[u8]>) {
|
|
check_types!($($oid)|+, ty)
|
|
let mut buf = MemWriter::new();
|
|
|
|
buf.write_be_i32(self.dimension_info().len() as i32);
|
|
buf.write_be_i32(1);
|
|
buf.write_be_u32(ty.member_type().to_oid());
|
|
|
|
for info in self.dimension_info().iter() {
|
|
buf.write_be_i32(info.len as i32);
|
|
buf.write_be_i32(info.lower_bound as i32);
|
|
}
|
|
|
|
for v in self.values() {
|
|
match *v {
|
|
Some(ref val) => {
|
|
let mut inner_buf = MemWriter::new();
|
|
val.raw_to_sql(&mut inner_buf);
|
|
let inner_buf = inner_buf.unwrap();
|
|
buf.write_be_i32(inner_buf.len() as i32);
|
|
buf.write(inner_buf);
|
|
}
|
|
None => buf.write_be_i32(-1)
|
|
}
|
|
}
|
|
|
|
(Binary, Some(buf.unwrap()))
|
|
}
|
|
}
|
|
|
|
to_option_impl!($($oid)|+, ArrayBase<Option<$t>>)
|
|
)
|
|
)
|
|
|
|
to_array_impl!(PgBoolArray, bool)
|
|
to_array_impl!(PgByteAArray, ~[u8])
|
|
to_array_impl!(PgCharArray, i8)
|
|
to_array_impl!(PgInt2Array, i16)
|
|
to_array_impl!(PgInt4Array, i32)
|
|
to_array_impl!(PgTextArray | PgCharNArray | PgVarcharArray, ~str)
|
|
to_array_impl!(PgInt8Array, i64)
|
|
to_array_impl!(PgTimestampArray | PgTimestampTZArray, Timespec)
|
|
to_array_impl!(PgFloat4Array, f32)
|
|
to_array_impl!(PgFloat8Array, f64)
|
|
to_array_impl!(PgUuidArray, Uuid)
|
|
to_array_impl!(PgInt4RangeArray, Range<i32>)
|
|
to_array_impl!(PgTsRangeArray | PgTstzRangeArray, Range<Timespec>)
|
|
to_array_impl!(PgInt8RangeArray, Range<i64>)
|
|
to_array_impl!(PgJsonArray, Json)
|
|
|
|
impl<'a> ToSql for HashMap<~str, Option<~str>> {
|
|
fn to_sql(&self, ty: &PostgresType) -> (Format, Option<~[u8]>) {
|
|
check_types!(PgUnknownType { name: ~"hstore", .. }, ty)
|
|
let mut buf = MemWriter::new();
|
|
|
|
buf.write_be_i32(self.len() as i32);
|
|
|
|
for (key, val) in self.iter() {
|
|
buf.write_be_i32(key.len() as i32);
|
|
buf.write(key.as_bytes());
|
|
|
|
match *val {
|
|
Some(ref val) => {
|
|
buf.write_be_i32(val.len() as i32);
|
|
buf.write(val.as_bytes());
|
|
}
|
|
None => buf.write_be_i32(-1)
|
|
}
|
|
}
|
|
|
|
(Binary, Some(buf.unwrap()))
|
|
}
|
|
}
|
|
to_option_impl!(PgUnknownType { name: ~"hstore", .. },
|
|
HashMap<~str, Option<~str>>)
|