/// <summary></summary>
/// <param name="left"></param>
/// <param name="type"></param>
/// <param name="right"></param>
/// <param name="onStatement"></param>
public PpsJoinExpression(PpsExpressionPart left, PpsDataJoinType type, PpsExpressionPart right, PpsDataJoinStatement[] onStatement)
{
this.left = left ?? throw new ArgumentNullException(nameof(left));
this.type = type;
this.right = right ?? throw new ArgumentNullException(nameof(right));
this.onStatement = onStatement ?? throw new ArgumentNullException(nameof(onStatement));
} // ctor
/// <summary>Visit expression part</summary>
/// <param name="expr"></param>
/// <returns></returns>
public TRESULT Visit(PpsExpressionPart expr)
{
switch (expr)
{
case PpsTableExpression tableExpr:
return(CreateTableStatement(tableExpr.Table, tableExpr.Alias));
case PpsJoinExpression joinExpr:
return(CreateJoinStatement(Visit(joinExpr.Left), joinExpr.Type, Visit(joinExpr.Right), joinExpr.Statement));
default:
throw new InvalidOperationException();
}
} // func Visit
/// <summary></summary> /// <param name="part"></param> protected PpsDataJoinExpression(PpsExpressionPart part) => root = part ?? throw new ArgumentNullException(nameof(part));