protected override void Initialize()
{
base.Initialize();
// Getting initial shape from our neighboors.
int[] proposedShape = new int[Rank];
var sch = DataSet.GetSchema(SchemaVersion.Recent);
ReadOnlyDimensionList dl = this.Dimensions;
int j = 0;
foreach (var v in sch.Variables)
{
if (v.ID == DataSet.GlobalMetadataVariableID || v.ID == ID)
{
continue;
}
for (int k = 0; k < v.Dimensions.Count; k++)
{
var d = v.Dimensions[k];
if (dl.Contains(d.Name))
{
j = dl.FindIndex(d.Name);
if (proposedShape[j] < d.Length)
{
proposedShape[j] = d.Length;
}
}
}
}
changes.Shape = proposedShape;
changes.AffectedRectangle = new Rectangle(new int[Rank], proposedShape);
}
protected virtual void UpdateChanges(DataSet.Changes changes)
{
if (changes == null)
{
return;
}
// Building proposed changes for this variable depending
// on shape of other variables of the same data set
// sharing the same dimensions.
bool shapeUpdated = false;
int rank = Rank;
int[] proposedShape = null;
ReadOnlyDimensionList dl = this.Dimensions;
int j = 0;
foreach (var v in changes.Variables)
{
if (v.ID == DataSet.GlobalMetadataVariableID || v.ID == ID)
{
continue;
}
var vch = changes.GetVariableChanges(v.ID);
if (vch == null)
{
continue;
}
if (proposedShape == null)
{
proposedShape = this.GetShape(); // committed shape to update
}
var dims = vch.InitialSchema.Dimensions.AsNamesArray();
for (int k = 0; k < vch.Shape.Length; k++)
{
string name = dims[k];
int d = vch.Shape[k];
if (dl.Contains(name))
{
j = dl.FindIndex(name);
if (proposedShape[j] < d)
{
proposedShape[j] = d;
shapeUpdated = true;
}
}
}
}
if (!shapeUpdated)
{
return;
}
Variable.Changes myChanges = changes.GetVariableChanges(ID);
if (myChanges != null)
{
shapeUpdated = false;
int[] prevPropShape = myChanges.Shape;
for (int i = 0; i < rank; i++)
{
if (proposedShape[i] != prevPropShape[i])
{
shapeUpdated = true;
break;
}
}
if (!shapeUpdated)
{
return;
}
}
int[] ar_origin = new int[rank];
int[] ar_shape = new int[rank];
bool hadChanges = false;
for (int i = 0; i < rank; i++)
{
if (proposedShape[i] == shape[i] || // no changes for dim #i
hadChanges)
{
ar_origin[i] = 0;
ar_shape[i] = proposedShape[i];
}
else // changes for dim #i
{
hadChanges = true;
ar_origin[i] = shape[i];
ar_shape[i] = proposedShape[i] - shape[i];
}
}
if (myChanges == null)
{
var ar = new Rectangle(ar_origin, ar_shape);
var shape = proposedShape;
myChanges = new Changes(Version + 1, GetSchema(SchemaVersion.Committed), new MetadataDictionary(),
null, shape, ar);
changes.UpdateChanges(myChanges);
}
else
{
myChanges.AffectedRectangle = new Rectangle(ar_origin, ar_shape);
myChanges.Shape = proposedShape;
}
}