Script object without specifying SQL Object type

Automate and integrate using the SQL comparison API

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Script object without specifying SQL Object type

Postby gr8nash » Mon Jul 16, 2012 10:23 pm

Hi all,

I am working on a migration tool using your awesome API. I am however stuck because every example i can find uses something like:

' Retrieve the script for a particular table
Dim regions As Regions = work.ScriptObject(widgetStaging.Tables(0), Options.Default)

I really would like to NOT have to look up an object type and pass that in. In the command line version there is an option "/Include:ALL" How can i do something similar with SQL Compare API?

I hope that question is clear enough

:)
gr8nash
 
Posts: 1
Joined: Mon Jul 16, 2012 10:17 pm

Postby Brian Donahue » Wed Jul 18, 2012 3:52 pm

Hello,

You can script all database objects without knowing the specific type of object using a bit of .NET Reflection magic. It's a matter of getting the list of properties from the Database object and checking to see if they implement SerializableDatabaseObjectCollection and then trying to convert them into individual IDatabaseObject objects from their respective IEnumerable collections.
Code: Select all
Imports System.Collections.Generic
Imports System.Linq
Imports System.Text
Imports RedGate.SQLCompare.Engine
Imports System.Reflection
Imports System.Collections
Module Module1

    Sub Main()
        Dim d As New Database()
        d.Register(New ConnectionProperties("ps-briand\\sql2008r2", "WidgetDev"), Options.[Default])
        Dim wrk As New Work()
        Dim t As Type = GetType(Database)
        For Each [property] As PropertyInfo In t.GetProperties()
            Dim baseType As Type = [property].PropertyType.BaseType
            If baseType IsNot Nothing AndAlso baseType.Name.StartsWith("SerializableDatabaseObjectCollection") Then
                Dim rawObject As Object = [property].GetValue(d, Nothing)
                For Each rawDBObject As Object In TryCast(rawObject, IEnumerable)
                    Dim dbObject As IDatabaseObject = TryCast(rawDBObject, IDatabaseObject)
                    Dim rgns As Regions = wrk.ScriptObject(dbObject, Options.[Default])
                    Console.WriteLine(rgns.ToString())
                Next

            End If
        Next
        d.Dispose()
        Console.ReadLine()
    End Sub

End Module
Note I'm not a VB programmer and I can't vouch that the VB version of this works; I had just used a utility to convert it. Here is the original C# code:
Code: Select all
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using RedGate.SQLCompare.Engine;
using System.Reflection;
using System.Collections;

namespace SDKScriptAllObjects
{
    class Program
    {

        static void Main(string[] args)
        {
            Database d = new Database();
            d.Register(new ConnectionProperties("ps-briand\\\\sql2008r2", "WidgetDev"),Options.Default);
            Work wrk = new Work();
            Type t = typeof(Database);
            foreach (PropertyInfo property in t.GetProperties())
            {
                Type baseType = property.PropertyType.BaseType;
                if (baseType != null && baseType.Name.StartsWith("SerializableDatabaseObjectCollection"))
                {
                    object rawObject = property.GetValue(d,null);
                    foreach (object rawDBObject in (rawObject as IEnumerable))
                    {                 
                        IDatabaseObject dbObject = rawDBObject as IDatabaseObject;
                        Regions rgns=wrk.ScriptObject(dbObject, Options.Default);
                        Console.WriteLine(rgns.ToString());
                    }
                }
               
            }
            d.Dispose();
            Console.ReadLine();
        }
    }
}
Brian Donahue
 
Posts: 6668
Joined: Mon Aug 23, 2004 10:48 am


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