public async Task Init()
{
PleaseClickCompare = false;
Comparer = null;
a7DbDataComparer structComparer = null;
using (var busyVm = new BusyViewModel(AppViewModel.Instance, "Comparing database structures..."))
{
await Task.Factory.StartNew(() =>
{
structComparer = new a7DbDataComparer(_connData.Name, DbA, DbB, AddLog);
});
}
if (structComparer != null)
{
Comparer = structComparer;
PleaseClickCompare = false;
//a7DbStructCompResultWnd wnd = new a7DbStructCompResultWnd(structComparer);
//wnd.ShowDialog();
}
else
{
MessageBox.Show("Something is wrong...");
PleaseClickCompare = true;
}
}
public a7ComparisonField(object valA, object valB, bool rowAExists, bool rowBExists, string name, a7DbDataComparer comparer)
{
ValueA = valA;
ValueB = valB;
RowAExists = rowAExists;
RowBExists = rowBExists;
Name = name;
_comparer = comparer;
}
public a7DbTableComparer(Table tableA, Table tableB, a7DbDataComparer dataComparer)
{
IsSelected = true;
PrimaryKeyColumnsA = new List <string>();
PrimaryKeyColumnsB = new List <string>();
ColumnsA = new List <string>();
ColumnsB = new List <string>();
_mergeWithDelete = false;
MergeDirection = a7DbComparerDirection.None;
MergeAtoB = new a7LambdaCommand(async(o) =>
{
if (MergeDirection != a7DbComparerDirection.AtoB)
{
await SetMergeDirection(a7DbComparerDirection.AtoB);
}
else
{
await SetMergeDirection(a7DbComparerDirection.None);
}
}
);
MergeBtoA = new a7LambdaCommand(async(o) =>
{
if (MergeDirection != a7DbComparerDirection.BtoA)
{
await SetMergeDirection(a7DbComparerDirection.BtoA);
}
else
{
await SetMergeDirection(a7DbComparerDirection.None);
}
}
);
//AnalyzeTableCommand = new a7LambdaCommand((o) =>
// { AnalyzeTable().ContinueWith(t =>IsTableVisible = true); });
//HideTable = new a7LambdaCommand((o) => IsTableVisible = false);
//ShowTableCommand = new a7LambdaCommand((o) => IsTableVisible = true);
AnalyzeTableCommand = new a7LambdaCommand((o) =>
{ AnalyzeTable().ContinueWith(t => this.ShowTable()); });
ShowTableCommand = new a7LambdaCommand((o) => this.ShowTable());
dataComparer.Log("Testing for differences - '" + tableA.Name + "'");
_comparer = dataComparer;
_srv = dataComparer.Srv;
TableA = tableA;
TableB = tableB;
IsOK = true;
var sql = "Select * from {0}.dbo.{1}";
DataSetA = _srv.ConnectionContext.ExecuteWithResults(string.Format(sql, DbAName, tableA.Name));
DataTableA = DataSetA.Tables[0];
DataSetB = _srv.ConnectionContext.ExecuteWithResults(string.Format(sql, DbBName, tableB.Name));
DataTableB = DataSetB.Tables[0];
IsAnalyzedRows = false;
IsDifferentStructure = false;
var columnsInAorB = new List <string>();
//collect column and primary keys info
var pkColumnsA = new List <DataColumn>();
foreach (var clA in tableA.Columns)
{
var col = clA as Column;
if (col.InPrimaryKey)
{
pkColumnsA.Add(DataTableA.Columns[col.Name]);
PrimaryKeyColumnsA.Add(col.Name);
}
ColumnsA.Add(col.Name);
if (!columnsInAorB.Contains(col.Name))
{
columnsInAorB.Add(col.Name);
}
}
DataTableA.PrimaryKey = pkColumnsA.ToArray();
var pkColumnsB = new List <DataColumn>();
foreach (var clB in tableB.Columns)
{
var col = clB as Column;
if (col.InPrimaryKey)
{
pkColumnsB.Add(DataTableB.Columns[col.Name]);
PrimaryKeyColumnsB.Add(col.Name);
}
ColumnsB.Add(col.Name);
if (!columnsInAorB.Contains(col.Name))
{
columnsInAorB.Add(col.Name);
}
}
DataTableB.PrimaryKey = pkColumnsB.ToArray();
//compare primary keys if the same in both databases
if (pkColumnsA.Count == 0 && pkColumnsB.Count == 0)
{
IsOK = false;
IsDifferentData = true;
ErrorText = string.Format("{2}: Table in {0} and in {1} has no primary keys.", DbAName, DbBName, TableName);
}
else if (pkColumnsA.Count == 0)
{
IsOK = false;
IsDifferentData = true;
ErrorText = string.Format("{1}: Table in {0} has no primary keys.", DbAName, TableName);
}
else if (pkColumnsB.Count == 0)
{
IsOK = false;
IsDifferentData = true;
ErrorText = string.Format("{1}: Table in {0} has no primary keys.", DbBName, TableName);
}
else if (pkColumnsA.Count != pkColumnsB.Count)
{
IsOK = false;
IsDifferentData = true;
ErrorText = TableName + ": Different amount of primary key columns in both databases.";
}
else
{
var differentPk = false;
for (var i = 0; i < pkColumnsA.Count; i++)
{
if (pkColumnsA[i].ColumnName != pkColumnsB[i].ColumnName)
{
differentPk = true;
break;
}
}
if (differentPk)
{
IsOK = false;
IsDifferentData = true;
ErrorText = TableName + ": Primary key columns in both databases are different.";
}
}
if (IsOK)
{
//summary of column information
ColumnsOnlyInA = new ObservableCollection <string>();
ColumnsOnlyInB = new ObservableCollection <string>();
ColumnsInBothTables = new ObservableCollection <string>();
foreach (var cn in columnsInAorB)
{
if (!ColumnsA.Contains(cn) && ColumnsB.Contains(cn))
{
ColumnsOnlyInB.Add(cn);
continue;
}
if (!ColumnsB.Contains(cn) && ColumnsA.Contains(cn))
{
ColumnsOnlyInA.Add(cn);
continue;
}
if (ColumnsA.Contains(cn) && ColumnsB.Contains(cn))
{
ColumnsInBothTables.Add(cn);
}
}
var pkA = DataTableA.PrimaryKey;
var pkB = DataTableB.PrimaryKey;
IsDifferentData = false;
//compare the rows of the two tables
if (ColumnsOnlyInA.Count > 0 || ColumnsOnlyInB.Count > 0)
{//different number of columns
IsDifferentData = true;
IsDifferentStructure = true;
}
else if (DataTableA.Rows.Count != DataTableB.Rows.Count)
{//different number of rows
IsDifferentData = true;
}
else if (pkA.Length != pkB.Length)
{//different number of primary key columns
IsDifferentData = true;
}
else
{ //compare the row data
foreach (var rwA in DataTableA.Rows)
{ //foreach row in dtA
var rowA = rwA as DataRow;
var pkValues = new List <object>();
foreach (var pk in pkA)
{
pkValues.Add(rowA[pk.ColumnName]);
}
//get the row in dtB
var rowB = DataTableB.Rows.Find(pkValues.ToArray());
if (rowB == null)
{//no row in dtB for this row
IsDifferentData = true;
break;
}
else
{
//compare the field values
var isDataDifferentInRow = false;
foreach (var cn in ColumnsInBothTables)
{
if (cn != "dbVersion" && cn != "dbTimestamp" && cn != "dbUser")
{
if (rowA[cn]?.ToString() != rowB[cn]?.ToString())
{
isDataDifferentInRow = true;
break;
}
}
}
if (isDataDifferentInRow)
{
IsDifferentData = true;
break;
}
}
}
}
}
}
public a7ComparisonRow(DataRow rowA, DataRow rowB, a7DbTableComparer tableComparer, a7DbDataComparer comparer)
{
MergeDirection = a7DbComparerDirection.None;
MergeAtoB = new a7LambdaCommand((o) =>
{
if (MergeDirection != a7DbComparerDirection.AtoB)
{
SetMergeDirection(a7DbComparerDirection.AtoB, false);
}
else
{
SetMergeDirection(a7DbComparerDirection.None, false);
}
}
);
MergeBtoA = new a7LambdaCommand((o) =>
{
if (MergeDirection != a7DbComparerDirection.BtoA)
{
SetMergeDirection(a7DbComparerDirection.BtoA, false);
}
else
{
SetMergeDirection(a7DbComparerDirection.None, false);
}
}
);
_dataRowA = rowA;
_dataRowB = rowB;
_comparer = comparer;
_tblComparer = tableComparer;
if (_dataRowA == null && _dataRowB != null)
{
IsOnlyInB = true;
IsOnlyInA = false;
AtoBCaption = "B>X";
BtoACaption = "B>A";
}
else if (_dataRowB == null && _dataRowA != null)
{
IsOnlyInB = false;
IsOnlyInA = true;
AtoBCaption = "A>B";
BtoACaption = "A>X";
}
else
{
IsOnlyInA = false;
IsOnlyInB = false;
AtoBCaption = "A>B";
BtoACaption = "B>A";
}
Fields = new Dictionary <string, a7ComparisonField>();
IsDifferent = false;
for (var i = 0; i < tableComparer.ColumnsInBothTables.Count; i++)
{
var colName = tableComparer.ColumnsInBothTables[i];
object valA = null;
if (rowA != null)
{
valA = rowA[colName];
}
object valB = null;
if (rowB != null)
{
valB = rowB[colName];
}
Fields.Add(colName, new a7ComparisonField(valA, valB, rowA != null, rowB != null, colName, this._comparer));
if (valA?.ToString() != valB?.ToString() &&
colName != "dbVersion" && colName != "dbTimestamp" && colName != "dbUser")
{
IsDifferent = true;
}
}
for (var i = 0; i < tableComparer.ColumnsOnlyInA.Count; i++)
{
var colName = tableComparer.ColumnsOnlyInA[i];
object valA = null;
if (rowA != null)
{
valA = rowA[colName];
}
Fields.Add(colName, new a7ComparisonField(valA, null, true, false, colName, this._comparer));
IsDifferent = true;
}
for (var i = 0; i < tableComparer.ColumnsOnlyInB.Count; i++)
{
var colName = tableComparer.ColumnsOnlyInB[i];
object valB = null;
if (rowB != null)
{
valB = rowB[colName];
}
Fields.Add(colName, new a7ComparisonField(null, valB, false, true, colName, this._comparer));
IsDifferent = true;
}
}
