public override void AssignFrom(AlterOperation src)
{
base.AssignFrom(src);
Script = ((AlterOperation_UpdateData)src).Script;
}
public static DataScript AlterFixedData(InMemoryTable oldData, InMemoryTable newData, InMemoryTableOperation ops, DbDiffOptions opts)
{
if (newData == null)
{
return(null);
}
IPrimaryKey newpk = newData.Structure.FindConstraint <IPrimaryKey>();
if (newpk == null)
{
return(null);
}
string[] newcolnames = newData.Structure.Columns.GetNames();
DataScript script = new DataScript();
if (oldData == null)
{
foreach (var row in newData.Rows)
{
script.Insert(newcolnames, row.GetValues());
}
}
else
{
if (ops != null)
{
oldData = new InMemoryTable(oldData, ops);
}
IPrimaryKey oldpk = oldData.Structure.FindConstraint <IPrimaryKey>();
if (oldpk == null)
{
return(null);
}
string[] newpkcols = newpk.Columns.GetNames();
string[] oldpkcols = oldpk.Columns.GetNames();
string[] newnopkcols = newData.Structure.GetNoPkColumns().GetNames();
string[] oldnopkcols = oldData.Structure.GetNoPkColumns().GetNames();
foreach (var row in newData.Rows)
{
object[] newpkvals = row.GetValuesByCols(newpkcols);
ArrayDataRecord oldrow = oldData.FindRow(oldpkcols, newpkvals);
if (oldrow != null)
{
object[] oldnopkvals = oldrow.GetValuesByCols(oldnopkcols);
object[] newnopkvals = row.GetValuesByCols(newnopkcols);
if (BedTool.EqualRecords(oldnopkvals, newnopkvals))
{
continue;
}
// UPDATE
List <string> changedcols = new List <string>();
List <object> changedvals = new List <object>();
for (int i = 0; i < oldnopkcols.Length; i++)
{
if (!BedTool.EqualValues(oldnopkvals[i], newnopkvals[i]))
{
changedcols.Add(newnopkcols[i]);
changedvals.Add(newnopkvals[i]);
}
}
script.Update(newpkcols.ToArray(), newpkvals.ToArray(), changedcols.ToArray(), changedvals.ToArray());
}
else
{
script.Insert(newcolnames, row.GetValues());
}
}
}
if (script.IsEmpty())
{
return(null);
}
return(script);
}