| com.db4o.ext.SystemInfo
All known Subclasses: com.db4o.internal.SystemInfoFileImpl,
| SystemInfo | | public interface SystemInfo (Code) | | provides information about system state and system settings.
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| Method Summary | |
| public int | freespaceEntryCount()
returns the number of entries in the Freespace Manager.
A high value for the number of freespace entries
is an indication that the database is fragmented and
that defragment should be run. | | public long | freespaceSize()
returns the freespace size in the database in bytes.
When db4o stores modified objects, it allocates
a new slot for it. | | public long | totalSize()
Returns the total size of the database on disk. |
| freespaceEntryCount | | public int freespaceEntryCount()(Code) | | returns the number of entries in the Freespace Manager.
A high value for the number of freespace entries
is an indication that the database is fragmented and
that defragment should be run.
the number of entries in the Freespace Manager. |
| freespaceSize | | public long freespaceSize()(Code) | | returns the freespace size in the database in bytes.
When db4o stores modified objects, it allocates
a new slot for it. During commit the old slot is freed.
Free slots are collected in the freespace manager, so
they can be reused for other objects.
This method returns a sum of the size of all
free slots in the database file.
To reclaim freespace run defragment.
the freespace size in the database in bytes. |
| totalSize | | public long totalSize()(Code) | | Returns the total size of the database on disk.
total size of database on disk |
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