46 lines
1 KiB
Go
46 lines
1 KiB
Go
package sqlite
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import (
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"source.gleipnir.technology/Gleipnir/jet/internal/jet"
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)
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// CAST function converts an expr (of any type) into later specified datatype.
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func CAST(expr Expression) *cast {
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return &cast{
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expr: expr,
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}
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}
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type cast struct {
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expr Expression
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}
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// AS casts expressions to castType
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func (c *cast) AS(castType string) Expression {
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return jet.AtomicCustomExpression(Token("CAST("), c.expr, Token("AS "+castType+")"))
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}
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// AS_TEXT cast expression to TEXT type
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func (c *cast) 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 *cast) 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 *cast) 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 *cast) 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 *cast) AS_BLOB() BlobExpression {
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return BlobExp(c.AS("BLOB"))
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}
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