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Explicit sqlbuilder cast.

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This commit is contained in:
zer0sub 2019-06-07 14:23:14 +02:00
parent 4d7fbf8f49
commit 3c5553b3dc
21 changed files with 293 additions and 104 deletions
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71
sqlbuilder/expression.go
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@ -2,6 +2,7 @@ package sqlbuilder
import (
"errors"
"fmt"
)
// An Expression
@ -22,16 +23,20 @@ type Expression interface {
ASC() OrderByClause
DESC() OrderByClause
CAST_TO(dbType string) Expression
CAST_TO_BOOL() BoolExpression
CAST_TO_INTEGER() IntegerExpression
CAST_TO_DOUBLE() FloatExpression
CAST_TO_TEXT() StringExpression
CAST_TO_DATE() DateExpression
CAST_TO_TIME() TimeExpression
CAST_TO_TIMEZ() TimezExpression
CAST_TO_TIMESTAMP() TimestampExpression
CAST_TO_TIMESTAMPZ() TimestampzExpression
TO(dbType string) Expression
TO_BOOL() BoolExpression
TO_SMALLINT() IntegerExpression
TO_INTEGER() IntegerExpression
TO_BIGINT() IntegerExpression
TO_NUMERIC(precision int, scale ...int) FloatExpression
TO_REAL() FloatExpression
TO_DOUBLE() FloatExpression
TO_TEXT() StringExpression
TO_DATE() DateExpression
TO_TIME() TimeExpression
TO_TIMEZ() TimezExpression
TO_TIMESTAMP() TimestampExpression
TO_TIMESTAMPZ() TimestampzExpression
}
type expressionInterfaceImpl struct {
@ -66,43 +71,65 @@ func (e *expressionInterfaceImpl) DESC() OrderByClause {
return &orderByClauseImpl{expression: e.parent, ascent: false}
}
func (e *expressionInterfaceImpl) CAST_TO(dbType string) Expression {
func (e *expressionInterfaceImpl) TO(dbType string) Expression {
return newCast(e.parent, dbType)
}
func (e *expressionInterfaceImpl) CAST_TO_BOOL() BoolExpression {
func (e *expressionInterfaceImpl) TO_BOOL() BoolExpression {
return newBoolCast(e.parent)
}
func (e *expressionInterfaceImpl) CAST_TO_INTEGER() IntegerExpression {
return newIntegerCast(e.parent)
func (e *expressionInterfaceImpl) TO_SMALLINT() IntegerExpression {
return newIntegerCast(e.parent, "smallint")
}
func (e *expressionInterfaceImpl) CAST_TO_DOUBLE() FloatExpression {
return newDoubleCast(e.parent)
func (e *expressionInterfaceImpl) TO_INTEGER() IntegerExpression {
return newIntegerCast(e.parent, "integer")
}
func (e *expressionInterfaceImpl) CAST_TO_TEXT() StringExpression {
func (e *expressionInterfaceImpl) TO_BIGINT() IntegerExpression {
return newIntegerCast(e.parent, "bigint")
}
func (e *expressionInterfaceImpl) TO_NUMERIC(precision int, scale ...int) FloatExpression {
var castType string
if len(scale) > 0 {
castType = fmt.Sprintf("numeric(%d, %d)", precision, scale[0])
} else {
castType = fmt.Sprintf("numeric(%d)", precision)
}
return newFloatCast(e.parent, castType)
}
func (e *expressionInterfaceImpl) TO_REAL() FloatExpression {
return newFloatCast(e.parent, "real")
}
func (e *expressionInterfaceImpl) TO_DOUBLE() FloatExpression {
return newFloatCast(e.parent, "double precision")
}
func (e *expressionInterfaceImpl) TO_TEXT() StringExpression {
return newTextCast(e.parent)
}
func (e *expressionInterfaceImpl) CAST_TO_DATE() DateExpression {
func (e *expressionInterfaceImpl) TO_DATE() DateExpression {
return newDateCast(e.parent)
}
func (e *expressionInterfaceImpl) CAST_TO_TIME() TimeExpression {
func (e *expressionInterfaceImpl) TO_TIME() TimeExpression {
return newTimeCast(e.parent)
}
func (e *expressionInterfaceImpl) CAST_TO_TIMEZ() TimezExpression {
func (e *expressionInterfaceImpl) TO_TIMEZ() TimezExpression {
return newTimezCast(e.parent)
}
func (e *expressionInterfaceImpl) CAST_TO_TIMESTAMP() TimestampExpression {
func (e *expressionInterfaceImpl) TO_TIMESTAMP() TimestampExpression {
return newTimestampCast(e.parent)
}
func (e *expressionInterfaceImpl) CAST_TO_TIMESTAMPZ() TimestampzExpression {
func (e *expressionInterfaceImpl) TO_TIMESTAMPZ() TimestampzExpression {
return newTimestampzCast(e.parent)
}