187 lines
6.4 KiB
Go
187 lines
6.4 KiB
Go
package postgres
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import (
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"time"
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"github.com/go-jet/jet/v2/internal/jet"
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)
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// Bool is boolean literal constructor
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func Bool(value bool) BoolExpression {
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return CAST(jet.Bool(value)).AS_BOOL()
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}
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// Int is constructor for 64 bit signed integer expressions literals.
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var Int = jet.Int
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// Int8 is constructor for 8 bit signed integer expressions literals.
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func Int8(value int8) IntegerExpression {
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return CAST(jet.Int8(value)).AS_SMALLINT()
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}
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// Int16 is constructor for 16 bit signed integer expressions literals.
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func Int16(value int16) IntegerExpression {
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return CAST(jet.Int16(value)).AS_SMALLINT()
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}
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// Int32 is constructor for 32 bit signed integer expressions literals.
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func Int32(value int32) IntegerExpression {
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return CAST(jet.Int32(value)).AS_INTEGER()
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}
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// Int64 is constructor for 64 bit signed integer expressions literals.
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func Int64(value int64) IntegerExpression {
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return CAST(jet.Int(value)).AS_BIGINT()
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}
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// Uint8 is constructor for 8 bit unsigned integer expressions literals.
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func Uint8(value uint8) IntegerExpression {
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return CAST(jet.Uint8(value)).AS_SMALLINT()
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}
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// Uint16 is constructor for 16 bit unsigned integer expressions literals.
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func Uint16(value uint16) IntegerExpression {
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return CAST(jet.Uint16(value)).AS_INTEGER()
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}
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// Uint32 is constructor for 32 bit unsigned integer expressions literals.
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func Uint32(value uint32) IntegerExpression {
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return CAST(jet.Uint32(value)).AS_BIGINT()
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}
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// Uint64 is constructor for 64 bit unsigned integer expressions literals.
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func Uint64(value uint64) IntegerExpression {
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return CAST(jet.Uint64(value)).AS_BIGINT()
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}
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// Float creates new float literal expression
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var Float = jet.Float
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// Real is placeholder constructor for 32-bit float literals
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func Real(value float32) FloatExpression {
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return CAST(jet.Literal(value)).AS_REAL()
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}
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// Double is placeholder constructor for 64-bit float literals
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func Double(value float64) FloatExpression {
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return CAST(jet.Literal(value)).AS_DOUBLE()
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}
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// Decimal creates new float literal expression
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var Decimal = jet.Decimal
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// String is a parameter constructor for the PostgreSQL text type. Using the `Text` constructor is
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// generally preferable.
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//
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// WARNING: String always applies a `text` type cast, which can be problematic if a parameter is compared
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// to a `character` column, as this may prevent index usage. In such cases, consider using the Char
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// constructor instead. See also other PostgreSQL-specific constructors: Text, Char, and VarChar.
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func String(value string) StringExpression {
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return CAST(jet.String(value)).AS_TEXT()
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}
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// Text is a parameter constructor for the PostgreSQL text type. This constructor also adds an
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// explicit placeholder type cast to text in the generated query, such as `$3::text`.
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// Example usage:
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//
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// Text("English")
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func Text(value string) StringExpression {
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return CAST(jet.Literal(value)).AS_TEXT()
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}
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// Char is a parameter constructor for the PostgreSQL character type. This constructor also adds an
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// explicit placeholder type cast to text in the generated query, such as `$3::char(30)`.
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// Example usage:
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//
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// Char(20)("English")
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func Char(length ...int) func(value string) StringExpression {
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return func(value string) StringExpression {
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return CAST(StringExp(jet.Literal(value))).AS_CHAR(length...)
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}
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}
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// VarChar is a parameter constructor for the PostgreSQL character varying type. This constructor
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// also adds an explicit placeholder type cast to text in the generated query, such as `$3::varchar(30)`.
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// Example usage:
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//
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// VarChar(20)("English")
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// VarChar()("English")
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func VarChar(length ...int) func(value string) StringExpression {
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return func(value string) StringExpression {
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return CAST(StringExp(jet.Literal(value))).AS_VARCHAR(length...)
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}
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}
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// Json creates new json literal expression
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func Json(value interface{}) StringExpression {
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switch value.(type) {
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case string, []byte:
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default:
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panic("Bytea parameter value has to be of the type string or []byte")
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}
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return StringExp(CAST(jet.Literal(value)).AS("json"))
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}
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// UUID is a helper function to create string literal expression from uuid object
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// value can be any uuid type with a String method
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var UUID = jet.UUID
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// Bytea creates new bytea literal expression
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func Bytea(value interface{}) ByteaExpression {
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switch value.(type) {
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case string, []byte:
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default:
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panic("Bytea parameter value has to be of the type string or []byte")
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}
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return CAST(jet.Literal(value)).AS_BYTEA()
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}
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// Date creates new date literal expression
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func Date(year int, month time.Month, day int) DateExpression {
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return CAST(jet.Date(year, month, day)).AS_DATE()
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}
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// DateT creates new date literal expression from time.Time object
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func DateT(t time.Time) DateExpression {
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return CAST(jet.DateT(t)).AS_DATE()
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}
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// Time creates new time literal expression
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func Time(hour, minute, second int, nanoseconds ...time.Duration) TimeExpression {
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return CAST(jet.Time(hour, minute, second, nanoseconds...)).AS_TIME()
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}
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// TimeT creates new time literal expression from time.Time object
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func TimeT(t time.Time) TimeExpression {
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return CAST(jet.TimeT(t)).AS_TIME()
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}
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// Timez creates new time with time zone literal expression
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func Timez(hour, minute, second int, milliseconds time.Duration, timezone string) TimezExpression {
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return CAST(jet.Timez(hour, minute, second, milliseconds, timezone)).AS_TIMEZ()
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}
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// TimezT creates new time with time zone literal expression from time.Time object
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func TimezT(t time.Time) TimezExpression {
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return CAST(jet.TimezT(t)).AS_TIMEZ()
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}
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// Timestamp creates new timestamp literal expression
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func Timestamp(year int, month time.Month, day, hour, minute, second int, milliseconds ...time.Duration) TimestampExpression {
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return CAST(jet.Timestamp(year, month, day, hour, minute, second, milliseconds...)).AS_TIMESTAMP()
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}
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// TimestampT creates new timestamp literal expression from time.Time object
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func TimestampT(t time.Time) TimestampExpression {
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return CAST(jet.TimestampT(t)).AS_TIMESTAMP()
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}
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// Timestampz creates new timestamp with time zone literal expression
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func Timestampz(year int, month time.Month, day, hour, minute, second int, milliseconds time.Duration, timezone string) TimestampzExpression {
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return CAST(jet.Timestampz(year, month, day, hour, minute, second, milliseconds, timezone)).AS_TIMESTAMPZ()
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}
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// TimestampzT creates new timestamp literal expression from time.Time object
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func TimestampzT(t time.Time) TimestampzExpression {
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return CAST(jet.TimestampzT(t)).AS_TIMESTAMPZ()
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}
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