/**
* Returns true if this set contains the specified element. This method conforms to the {@link
* Set#contains} interface.
*
* @param mapEntry is a {@link java.util.Map.Entry} instance to be checked.
* @return true if the key-value pair is present in the set, or false if the mapEntry is not a
* {@link java.util.Map.Entry} instance or is not present in the set.
* @throws RuntimeExceptionWrapper if a {@link DatabaseException} is thrown.
*/
public boolean contains(Object mapEntry) {
if (!(mapEntry instanceof Map.Entry)) {
return false;
}
Map.Entry entry = (Map.Entry) mapEntry;
DataCursor cursor = null;
try {
cursor = new DataCursor(view, false);
OperationStatus status = cursor.findBoth(entry.getKey(), entry.getValue(), false);
return (status == OperationStatus.SUCCESS);
} catch (Exception e) {
throw StoredContainer.convertException(e);
} finally {
closeCursor(cursor);
}
}
/**
* Removes the specified element from this set if it is present (optional operation). This method
* conforms to the {@link Set#remove} interface.
*
* @param mapEntry is a {@link java.util.Map.Entry} instance to be removed.
* @return true if the key-value pair was removed from the set, or false if the mapEntry is not a
* {@link java.util.Map.Entry} instance or is not present in the set.
* @throws UnsupportedOperationException if the collection is read-only.
* @throws RuntimeExceptionWrapper if a {@link DatabaseException} is thrown.
*/
public boolean remove(Object mapEntry) {
if (!(mapEntry instanceof Map.Entry)) {
return false;
}
Map.Entry entry = (Map.Entry) mapEntry;
DataCursor cursor = null;
boolean doAutoCommit = beginAutoCommit();
try {
cursor = new DataCursor(view, true);
OperationStatus status = cursor.findBoth(entry.getKey(), entry.getValue(), true);
if (status == OperationStatus.SUCCESS) {
cursor.delete();
}
closeCursor(cursor);
commitAutoCommit(doAutoCommit);
return (status == OperationStatus.SUCCESS);
} catch (Exception e) {
closeCursor(cursor);
throw handleException(e, doAutoCommit);
}
}