public DataSetChangedEventArgs(DataSet sds, DataSetChangeAction action, object target, DataSetChangeset changes)
{
this.sds = sds;
this.action = action;
this.target = target;
this.changes = changes;
}
public DataSetChangedEventArgs(DataSet sds, DataSetChangeAction action, object target, DataSetChangeset changes)
{
this.sds = sds;
this.action = action;
this.target = target;
this.changes = changes;
}
/// <summary>
/// Initializes the instance of the class.
/// </summary>
/// <param name="sds">The committed data set.</param>
/// <param name="changes">Committed changes.</param>
/// <param name="committedSchema">DataSet schema after commit</param>
internal DataSetCommittedEventArgs(DataSet sds, DataSetChangeset changes, DataSetSchema committedSchema)
{
this.sds = sds;
this.changes = changes;
this.committedSchema = committedSchema;
}
protected override void OnPrecommit(DataSet.Changes changes)
{
if (!_IsInitialized)
{
return;
}
DataSetChangeset changeSet = changes.GetChangeset();
if (changeSet.AddedVariables != null && changeSet.AddedVariables.Length != 0)
{
throw new DataSetException(@"Addition of new variables isn't supported.");
}
foreach (var i in changeSet.UpdatedVariables)
{
if (i.ChangeType == Variable.ChangeTypes.MetadataUpdated)
{
throw new DataSetException(@"Metadata modification isn't supported.");
}
var _shape = this.variables[i.InitialSchema.Name].GetShape();
if (_shape.Length != i.Shape.Length)
{
throw new DataSetException(@"Shape modification isn't supported.");
}
for (int j = 0; j < _shape.Length; ++j)
{
if (_shape[j] != i.Shape[j])
{
throw new DataSetException(@"Shape modification isn't supported.");
}
}
var origin = i.AffectedRectangle.Origin;
var shape = i.AffectedRectangle.Shape;
if (origin.Length != _shape.Length || shape.Length != _shape.Length)
{
throw new DataSetException("Wrong number of dimensions.");
}
for (int j = 1; j < shape.Length; ++j)
{
if (_shape[j] != shape[j] || origin[j] != 0)
{
throw new DataSetException("Can only part data by its 1st dimension.");
}
}
if (origin[0] + shape[0] > _shape[0])
{
throw new DataSetException(@"Can't write more data than there is space reserved for.");
}
if (this.variables[i.InitialSchema.Name].Dimensions.Count == 1)
{
//(origin[0] != 0 || shape[0] != _shape[0])) throw new DataSetException(@"Can't part single-dimensional data");
int datalen = shape[0];
int datumSize = datumSizeDictionary[i.InitialSchema.Name];
int byteLen = datalen * datumSize;
long byteOrigin = origin[0] * datumSize;
if (byteOrigin % 512 != 0 || (origin[0] + datalen != _shape[0] && byteLen % 512 != 0))
{
throw new ArgumentException(@"Can write only full 512 byte pages of single-dimensional data starting at a 512 bytes aligned position.");
}
}
}
base.OnPrecommit(changes);
}
/// <summary>
/// Initializes the instance of the class.
/// </summary>
/// <param name="sds">The committed data set.</param>
/// <param name="changes">Committed changes.</param>
/// <param name="committedSchema">DataSet schema after commit</param>
internal DataSetCommittedEventArgs(DataSet sds, DataSetChangeset changes, DataSetSchema committedSchema)
{
this.sds = sds;
this.changes = changes;
this.committedSchema = committedSchema;
}
