65 lines
1.4 KiB
Go
65 lines
1.4 KiB
Go
package sqlbuilder
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type funcExpressionImpl struct {
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expressionInterfaceImpl
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name string
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expression []Expression
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}
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func ROW(expressions ...Expression) Expression {
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return newFunc("ROW", expressions, nil)
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}
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func newFunc(name string, expressions []Expression, parent Expression) *funcExpressionImpl {
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funcExp := &funcExpressionImpl{
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name: name,
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expression: expressions,
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}
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if parent != nil {
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funcExp.expressionInterfaceImpl.parent = parent
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} else {
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funcExp.expressionInterfaceImpl.parent = funcExp
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}
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return funcExp
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}
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func (f *funcExpressionImpl) Serialize(out *queryData, options ...serializeOption) error {
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out.WriteString(f.name)
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out.WriteString("(")
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err := serializeExpressionList(f.expression, ", ", out)
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if err != nil {
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return err
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}
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out.WriteString(")")
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return nil
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}
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type numericFunc struct {
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funcExpressionImpl
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numericInterfaceImpl
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}
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func NewNumericFunc(name string, expressions ...Expression) NumericExpression {
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numericFunc := &numericFunc{}
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numericFunc.funcExpressionImpl = *newFunc(name, expressions, numericFunc)
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numericFunc.numericInterfaceImpl.parent = numericFunc
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return numericFunc
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}
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//func (f *FuncExpression) SerializeSqlForColumnList(out *bytes.Buffer) error {
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// return f.Serialize(out)
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//}
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func MAX(expression NumericExpression) NumericExpression {
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return NewNumericFunc("MAX", expression)
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}
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func SUM(expression NumericExpression) NumericExpression {
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return NewNumericFunc("SUM", expression)
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}
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