protected Func <bool> GetIdComparer(Row r1, Row r2, out ValueGetter <RowId> idGetter)
{
var g1 = r1.GetIdGetter();
idGetter = g1;
var g2 = r2.GetIdGetter();
RowId v1 = default(RowId);
RowId v2 = default(RowId);
return
(() =>
{
g1(ref v1);
g2(ref v2);
return v1.Equals(v2);
});
}
public bool Equals(CellId other)
{
return(RowId.Equals(other.RowId) &&
ColumnOffset.Equals(other.ColumnOffset));
}
public void SetValue(int column, RowId rowid, object value)
{
if (updateType == 'R' || updateType == ' ')
throw new InvalidOperationException("Incorrect state to update");
if (!rowid.Equals(currentRow.Id))
throw new InvalidOperationException("rowid does not reference a mutable row");
int ncol = column;
if (project != null) {
// Map the given 'col' into a column in the native table
// Get the projection op
Expression col_projection = project[column];
// Turn it into a var
Variable var = QueryProcessor.GetAsVariableRef(col_projection);
// If it's not a var,
if (var == null)
throw new InvalidOperationException("Column is not updatable.");
// Look up the column in the source table
ncol = backedTable.Columns.IndexOf(var.Name);
// If not found
if (ncol == -1)
throw new InvalidOperationException("Column is not updatable.");
}
// Set the contents of the native table!
currentRow.SetValue(ncol, new SqlObject(value));
}
