 AcDbDatabase::purge (AcDbObjectIdArray&) |
This function searches through the database to see if there are any hard references to objects with object ID entities in the ids array. If any such objects are found, their object ID entities are removed from the ids array. So, when this function returns, the ids array will contain only object ID entities of objects that are not currently hard-referenced and thus can safely be erased.If the database is in a partially opened state, object ID entities of objects that were not created in the current editing session are also removed from the ids array. |
| AcDbDatabase::purge (AcDbObjectIdGraph&) |
This version of the purge() method works in one pass. The method looks for references between the objects passed in so that it does not need to be called multiple times. In other words, if a Layer and a Linetype are passed in, and the only reference to the Linetype is from the Layer, then the graph returned will indicate that both the Layer and the Linetype can be purged. (The older AcDbObjectIdArray version of purge() would first indicate that only the Layer could be purged. Then a second call, after erasing the Layer, would say that the Linetype could... more |
