//Copy all values of this DataRow to the row parameter.
internal void CopyValuesToRow(DataRow row)
{
if (row == null)
throw new ArgumentNullException("row");
if (row == this)
throw new ArgumentException("'row' is the same as this object");
// create target records if missing.
if (HasVersion(DataRowVersion.Original)) {
if (row.Original < 0)
row.Original = row.Table.RecordCache.NewRecord();
else if (row.Original == row.Current) {
row.Original = row.Table.RecordCache.NewRecord();
row.Table.RecordCache.CopyRecord (row.Table, row.Current, row.Original);
}
} else {
if (row.Original > 0) {
if (row.Original != row.Current)
row.Table.RecordCache.DisposeRecord(row.Original);
row.Original = -1;
}
}
if (HasVersion(DataRowVersion.Current)) {
if (Current == Original) {
if (row.Current >= 0)
row.Table.RecordCache.DisposeRecord(row.Current);
row.Current = row.Original;
}else {
if (row.Current < 0)
row.Current = row.Table.RecordCache.NewRecord();
}
} else {
if (row.Current > 0) {
row.Table.RecordCache.DisposeRecord(row.Current);
row.Current = -1;
}
}
if (HasVersion(DataRowVersion.Proposed)) {
if (row.Proposed < 0)
row.Proposed = row.Table.RecordCache.NewRecord();
} else {
if (row.Proposed > 0) {
row.Table.RecordCache.DisposeRecord(row.Proposed);
row.Proposed = -1;
}
}
// copy source record values to target records
foreach(DataColumn column in Table.Columns) {
DataColumn targetColumn = row.Table.Columns[column.ColumnName];
//if a column with the same name exists in both rows copy the values
if(targetColumn != null) {
if (HasVersion(DataRowVersion.Original)) {
object val = column[Original];
row.CheckValue(val, targetColumn);
targetColumn[row.Original] = val;
}
if (HasVersion(DataRowVersion.Current)
&& Current != Original) {
object val = column[Current];
row.CheckValue(val, targetColumn);
targetColumn[row.Current] = val;
}
if (HasVersion(DataRowVersion.Proposed)) {
object val = column[row.Proposed];
row.CheckValue(val, targetColumn);
targetColumn[row.Proposed] = val;
}
}
}
if (HasErrors) {
CopyErrors(row);
}
}
//Merge all values of this DataRow to the row parameter according to merge rules.
internal void MergeValuesToRow (DataRow row, bool preserveChanges)
{
if (row == null)
throw new ArgumentNullException ("row");
if (row == this)
throw new ArgumentException ("'row' is the same as this object");
// Original values are anyway copied
if (HasVersion (DataRowVersion.Original)) {
if (row.Original < 0)
row.Original = row.Table.RecordCache.NewRecord ();
else if (row.Original == row.Current && !(Original == Current && !preserveChanges)) {
row.Original = row.Table.RecordCache.NewRecord ();
row.Table.RecordCache.CopyRecord (row.Table, row.Current, row.Original);
}
} else {
if (row.Original == row.Current) { // if target has same current, better create new original
row.Original = row.Table.RecordCache.NewRecord ();
row.Table.RecordCache.CopyRecord (row.Table, row.Current, row.Original);
}
}
// if i have current, push all
if (HasVersion (DataRowVersion.Current)) {
if (! preserveChanges && row.Current < 0)
row.Current = row.Table.RecordCache.NewRecord ();
} else {
if (row.Current > 0 && ! preserveChanges) {
row.Table.RecordCache.DisposeRecord (row.Current);
row.Current = -1;
}
}
// copy source record values to target records
foreach (DataColumn column in Table.Columns) {
DataColumn targetColumn = row.Table.Columns[column.ColumnName];
//if a column with the same name exists in both rows copy the values
if (targetColumn != null) {
if (HasVersion (DataRowVersion.Original)) {
object val = column [Original];
row.CheckValue (val, targetColumn);
targetColumn [row.Original] = val;
}
if (HasVersion (DataRowVersion.Current) && !preserveChanges) {
object val = column [Current];
row.CheckValue (val, targetColumn);
targetColumn [row.Current] = val;
}
}
}
if (HasErrors)
CopyErrors(row);
}
