56 lines
1.2 KiB
Go
56 lines
1.2 KiB
Go
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package sqlite
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import (
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"github.com/go-jet/jet/v2/internal/jet"
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)
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type cast interface {
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AS(castType string) Expression
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AS_TEXT() StringExpression
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AS_NUMERIC() FloatExpression
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AS_INTEGER() IntegerExpression
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AS_REAL() FloatExpression
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AS_BLOB() StringExpression
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}
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type castImpl struct {
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jet.Cast
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}
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// CAST function converts a expr (of any type) into latter specified datatype.
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func CAST(expr Expression) cast {
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castImpl := &castImpl{}
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castImpl.Cast = jet.NewCastImpl(expr)
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return castImpl
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}
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// AS casts expressions to castType
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func (c *castImpl) AS(castType string) Expression {
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return c.Cast.AS(castType)
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}
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// AS_TEXT cast expression to TEXT type
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func (c *castImpl) AS_TEXT() StringExpression {
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return StringExp(c.AS("TEXT"))
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}
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// AS_NUMERIC cast expression to NUMERIC type
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func (c *castImpl) AS_NUMERIC() FloatExpression {
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return FloatExp(c.AS("NUMERIC"))
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}
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// AS_INTEGER cast expression to INTEGER type
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func (c *castImpl) AS_INTEGER() IntegerExpression {
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return IntExp(c.AS("INTEGER"))
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}
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// AS_REAL cast expression to REAL type
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func (c *castImpl) AS_REAL() FloatExpression {
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return FloatExp(c.AS("REAL"))
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}
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// AS_BLOB cast expression to BLOB type
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func (c *castImpl) AS_BLOB() StringExpression {
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return StringExp(c.AS("BLOB"))
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}
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