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KiokuDB::Entry - An entry in the database
KiokuDB::Entry->new( id => ..., data => ... );
This object provides the meta data for a single storage entry.
The UUID for the entry.
If there is no ID then the entry is intrinsic.
Whether or not this is a member of the root set (not subject to garbage collection, because storage was explicitly requested).
A simplified data structure modeling this object/reference. This is a tree, not a graph, and has no shared data (JSON compliant). All references are symbolic, using a KiokuDB::Reference object with UIDs as the address space.
If the entry is blessed, this contains the class of that object.
In the future this might be a complex structure for anonymous classes, e.g. the class and the runtime roles.
Optional information such as runtime roles to be applied to the object is stored in this hashref.
datais assumed to be a reference or an intrinsic entry for the object driving the tied structure (e.g. the
Contains a link to a KiokuDB::Entry objects that precedes this one.
The last entry that was loaded from the store, or successfully written to the store for a given UUID is kept in the live object set.
The collapser creates transient Entry objects, which if written to the store successfully replace the previous one.
Backends can use this to store additional meta data as they see fit.
For instance, this is used in the CouchDB backend to track entry revisions for the opportunistic locking, and in KiokuDB::Backend::BDB::GIN to to store extracted keys.
Used for marking entries for deletion.
Deletion entries can be generated using the
deletion_entrymethod, which creates a new derived entry with no data but retaining the ID.