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RedGate.SQLDataCompare.Engine | Send comments on this topic. |
| RedGate.SQLDataCompare.Engine Namespace : TableMappings Class (RedGate.SQLDataCompare.Engine) |
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RedGate.SQLDataCompare.Engine | Send comments on this topic. |
| RedGate.SQLDataCompare.Engine Namespace : TableMappings Class (RedGate.SQLDataCompare.Engine) |
Holds mappings for tables or views in a schema.
For a list of all members of this type, see TableMappings members.
  
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System.Object
RedGate.SQLCompare.Engine.Mappings
RedGate.SQLDataCompare.Engine.TableMappings
[Visual Basic]
<DefaultMemberAttribute("Item")>
Public Class TableMappings
Inherits Mappings
Implements ICancellable [C#]
[DefaultMemberAttribute("Item")]
public class TableMappings : Mappings, ICancellable [C++]
[DefaultMemberAttribute("Item")]
public __gc class TableMappings : public Mappings, ICancellable [C++/CLI]
[DefaultMemberAttribute("Item")]
public ref class TableMappings : public Mappings, ICancellable [C#]
using System;
using RedGate.SQLCompare.Engine;
using RedGate.SQLDataCompare.Engine;
using RedGate.SQLDataCompare.Engine.ResultsStore;
namespace RedGate.SQLDataCompare.ExampleTests
{
public class TableMappingExample
{
public void RunExample()
{
Database db1=new Database();
Database db2=new Database();
ComparisonSession session=new ComparisonSession();
TableMappings mappings = new TableMappings();
try
{
db1.RegisterForDataCompare(new ConnectionProperties(".", "WidgetDev"));
db2.RegisterForDataCompare(new ConnectionProperties(".", "WidgetLive"));
// Create the mappings between a certain table
TableMapping tableMapping = (TableMapping)mappings.Join(db1.Tables["[dbo].[WidgetPrices]"], db2.Tables["[dbo].[WidgetPrices]"]);
// Set the custom comparison key for the table
tableMapping.MatchingMappings.Clear();
tableMapping.MatchingMappings.Add(tableMapping.FieldMappings["WidgetID"]);
tableMapping.RefreshMappingStatus();
// Set the where clause for the comparison
tableMapping.Where = new WhereClause("Active = 'Y'");
// Peform the comparison
session.CompareDatabases(db1, db2, mappings);
TableDifference difference=session.TableDifferences["[dbo].[WidgetPrices]"];
// Loop through all the rows
foreach(Row row in difference.ResultsStore)
{
Console.WriteLine("Row {0} type {1}", row.Index, row.Type.ToString());
int i=0;
foreach (FieldPair field in difference.ResultsStore.Fields)
{
int field1=field.OrdinalInResults1;
int field2=field.OrdinalInResults2;
if (field1 != field2)
{
//get the values
object value1=row.Values[field1];
object value2=row.Values[field2];
if (value1 == null)
value1="NULL";
if (value2 == null)
value2="NULL";
Console.WriteLine("{0}\t{1}\t{2}\t{3}",field.Field(false).Name, value1.ToString(),row.FieldDifferent(i)?"<>":"==", value2.ToString());
}
else
{
//this is part of the custom index we are comparing on
object value=row.Values[field1];
Console.WriteLine("*{0}\t{1}",field.Field(false).Name, value.ToString());
}
i++;
}
}
}
finally
{
session.Dispose();
db1.Dispose();
db2.Dispose();
}
}
}
}
[Visual Basic]
Option Explicit On
Imports RedGate.SQLCompare.Engine
Imports RedGate.SQLDataCompare.Engine
Imports RedGate.SQLDataCompare.Engine.ResultsStore
Public Class TableMappingExample
Sub RunExample()
Dim session As New ComparisonSession
'register the databases for comparison
Dim db1 As New Database
Dim db2 As New Database
db1.RegisterForDataCompare(New ConnectionProperties(".", "WidgetDev"))
db2.RegisterForDataCompare(New ConnectionProperties(".", "WidgetLive"))
Dim mappings As New TableMappings
Dim tableMapping As tableMapping = mappings.Join(db1.Tables("[dbo].[WidgetPrices]"), db2.Tables("[dbo].[WidgetPrices]"))
' Set the custom comparison key for the table
tableMapping.MatchingMappings.Clear()
tableMapping.MatchingMappings.Add(tableMapping.FieldMappings("WidgetID"))
tableMapping.RefreshMappingStatus()
' Set the where clause for the comparison
tableMapping.Where = New WhereClause("Active = 'Y'")
'compare the databases
session.CompareDatabases(db1, db2, mappings)
Dim mapping As TableMapping
Dim difference As TableDifference = session.TableDifferences("[dbo].[WidgetPrices]")
Dim row As row
For Each row In difference.ResultsStore 'loop through all the rows
Dim field As FieldPair
Dim i As Int32 = 0
Console.WriteLine("Row {0} type {1}", row.Index, row.Type.ToString())
For Each field In difference.ResultsStore.Fields
'work out where about in the results the field data is stored
'if we were comparing identical records, or records present in one
'database but not the other then we would not need to
'use the OrdinalInResults1 and OrdinalInResults2 properties
'but just OrdinalInResults
Dim field1 As Int32 = field.OrdinalInResults1
Dim field2 As Int32 = field.OrdinalInResults2
If (field1 <> field2) Then
'get the values
Dim value1 As Object = row.Values(field1)
Dim value2 As Object = row.Values(field2)
If (value1 Is Nothing) Then
value1 = "NULL"
End If
If (value2 Is Nothing) Then
value2 = "NULL"
End If
If row.FieldDifferent(i) Then
Console.WriteLine("{0}:{1} <> {2}", field.Field(False).Name, value1.ToString(), value2.ToString())
Else
Console.WriteLine("{0}:{1} == {2}", field.Field(False).Name, value1.ToString(), value2.ToString())
End If
Else
'this is part of the unique index we are comparing on
Dim value As Object = row.Values(field1)
Console.WriteLine("*{0}:{1}", field.Field(False).Name, value.ToString())
End If
i += 1
Next
Next
'dispose of the objects
session.Dispose()
db1.Dispose()
db2.Dispose()
End Sub
End Class
Namespace: RedGate.SQLDataCompare.Engine
Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family
Assembly: RedGate.SQLDataCompare.Engine (in RedGate.SQLDataCompare.Engine.dll)
TableMappings Members | RedGate.SQLDataCompare.Engine Namespace
© 2003 - 2006 Red Gate Software Ltd. All Rights Reserved.