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Oracle Application Development Framework Model and Business Components Java API Reference
10g Release 3 (10.1.3) B16005-01 |
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Contains a facility to store collections of temporary data.
See:
Description
| Interface Summary | |
| PCollListener | |
| PCollManagerHelper | |
| PCollPersistable | |
| PersistManager | |
| Class Summary | |
| JDBCPersistManager | |
| JTAPersistManager | |
| OraclePersistManager | |
| PCollection | |
| PCollInputStream | |
| PCollKeyInfo | |
| PCollManager | |
| PCollNode | |
| PCollOutputStream | |
| PersistentMarker | |
Contains a facility to store collections of temporary data. Alongside its core object/relational persistence feature for entity objects, BC4J has a facility to store collections of temporary data. This persistent collections facility (PCOLL) is used by the BC4J framework to temporarily store :
This allows the pending changes in an application module to be logically retained without physically dedicating an application module instance to each client.
This insures that the application does not run out of memory when an a misguided user query returns too many rows and they decide to scroll through them all. Instead the extra rows "spill-over" into a temporary persistent store without using real-memory.
In order to manage this pending state, BC4J creates a set of tables that hold the temporary information in BLOB values.
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Oracle Application Development Framework Model and Business Components Java API Reference
10g Release 3 (10.1.3) B16005-01 |
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