62 lines
1.2 KiB
Go
62 lines
1.2 KiB
Go
package jet
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import "errors"
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type ExpressionTable interface {
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ReadableTable
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Alias() string
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AllColumns() ProjectionList
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}
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type expressionTableImpl struct {
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readableTableInterfaceImpl
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expression Expression
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alias string
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projections []projection
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}
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func newExpressionTable(expression Expression, alias string, projections []projection) ExpressionTable {
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expTable := &expressionTableImpl{expression: expression, alias: alias}
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expTable.readableTableInterfaceImpl.parent = expTable
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for _, projection := range projections {
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newProjection := projection.from(expTable)
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expTable.projections = append(expTable.projections, newProjection)
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}
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return expTable
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}
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func (e *expressionTableImpl) Alias() string {
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return e.alias
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}
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func (e *expressionTableImpl) columns() []column {
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return nil
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}
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func (e *expressionTableImpl) AllColumns() ProjectionList {
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return e.projections
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}
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func (e *expressionTableImpl) serialize(statement statementType, out *sqlBuilder, options ...serializeOption) error {
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if e == nil {
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return errors.New("Expression table is nil. ")
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}
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err := e.expression.serialize(statement, out)
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if err != nil {
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return err
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}
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out.writeString("AS")
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out.writeIdentifier(e.alias)
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return nil
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}
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