public IColumn diff(IColumn column) {
IColumn columnDiff = new SuperColumn(column.name());
Collection<IColumn> columns = column.getSubColumns();
for (IColumn subColumn : columns) {
IColumn columnInternal = columns_.get(subColumn.name());
if (columnInternal == null) {
columnDiff.addColumn(subColumn.name(), subColumn);
} else {
IColumn subColumnDiff = columnInternal.diff(subColumn);
if (subColumnDiff != null) {
columnDiff.addColumn(subColumn.name(), subColumnDiff);
}
}
}
if (columnDiff.getSubColumns().size() != 0) return columnDiff;
else return null;
}
private void fillSuperColumn(IColumn superColumn, DataInputStream dis) throws IOException {
if (dis.available() == 0) return;
/* read the number of columns */
int size = dis.readInt();
/* read the size of all columns */
dis.readInt();
for (int i = 0; i < size; ++i) {
IColumn subColumn = Column.serializer().deserialize(dis);
superColumn.addColumn(subColumn.name(), subColumn);
}
}
/*
* Deserialize a particular column since the name is in the form of
* superColumn:column.
*/
public IColumn deserialize(DataInputStream dis, String name, IFilter filter) throws IOException {
if (dis.available() == 0) return null;
String[] names = RowMutation.getColumnAndColumnFamily(name);
if (names.length == 1) {
IColumn superColumn = defreezeSuperColumn(dis);
if (name.equals(superColumn.name())) {
if (!superColumn.isMarkedForDelete()) {
/* read the number of columns stored */
int size = dis.readInt();
/* read the size of all columns */
dis.readInt();
IColumn column = null;
for (int i = 0; i < size; ++i) {
column = Column.serializer().deserialize(dis, filter);
if (column != null) {
superColumn.addColumn(column.name(), column);
column = null;
if (filter.isDone()) {
break;
}
}
}
}
return superColumn;
} else {
/* read the number of columns stored */
dis.readInt();
/* read the size of all columns to skip */
int size = dis.readInt();
dis.skip(size);
return null;
}
}
SuperColumn superColumn = defreezeSuperColumn(dis);
if (!superColumn.isMarkedForDelete()) {
int size = dis.readInt();
/* skip the size of the columns */
dis.readInt();
if (size > 0) {
for (int i = 0; i < size; ++i) {
IColumn subColumn = Column.serializer().deserialize(dis, names[1], filter);
if (subColumn != null) {
superColumn.addColumn(subColumn.name(), subColumn);
break;
}
}
}
}
return superColumn;
}