Class RllRAMAccessManager
java.lang.Object
org.apache.derby.impl.store.access.RAMAccessManager
org.apache.derby.impl.store.access.RllRAMAccessManager
- All Implemented Interfaces:
CacheableFactory
,ModuleControl
,PropertySetCallback
,AccessFactory
Implements the row level locking accessmanager.
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Field Summary
FieldsFields inherited from class org.apache.derby.impl.store.access.RAMAccessManager
conglom_map, record_level_policy, system_default_locking_policy, table_level_policy
Fields inherited from interface org.apache.derby.iapi.store.access.AccessFactory
MODULE
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionprotected void
Query property system to get the System lock level.protected int
Return the locking level of the system.Methods inherited from class org.apache.derby.impl.store.access.RAMAccessManager
apply, backup, backupAndEnableLogArchiveMode, boot, checkpoint, conglomCacheAddEntry, conglomCacheFind, conglomCacheInvalidate, conglomCacheRemoveEntry, createFinished, createReadMeFiles, disableLogArchiveMode, failover, findMethodFactoryByFormat, findMethodFactoryByImpl, freeze, getAndNameTransaction, getCurrentTransactionContext, getDefaultLockingPolicy, getFactoryFromConglomId, getLockFactory, getNextConglomId, getRawStore, getTransaction, getTransactionalProperties, getTransactionInfo, getXAResourceManager, init, isReadOnly, map, newCacheable, registerAccessMethod, startReplicationMaster, startXATransaction, stop, stopReplicationMaster, unfreeze, validate, waitForPostCommitToFinishWork
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Field Details
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system_lock_level
private int system_lock_level
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Constructor Details
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RllRAMAccessManager
public RllRAMAccessManager()Constructors for This class:
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Method Details
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getSystemLockLevel
protected int getSystemLockLevel()Return the locking level of the system.This routine controls the lowest level of locking enabled for all locks for all tables accessed through this accessmanager. The concrete implementation may set this value always to table level locking for a client configuration, or it may set it to row level locking for a server configuration.
If TransactionController.MODE_RECORD is returned table may either be locked at table or row locking depending on the type of access expected (ie. level 3 will require table locking for heap scans.)
- Specified by:
getSystemLockLevel
in classRAMAccessManager
- Returns:
- TransactionController.MODE_TABLE if only table locking allowed, else returns TransactionController.MODE_RECORD.
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bootLookupSystemLockLevel
Query property system to get the System lock level.This routine will be called during boot after access has booted far enough, to allow access to the property conglomerate. This routine will call the property system and set the value to be returned by getSystemLockLevel().
- Specified by:
bootLookupSystemLockLevel
in classRAMAccessManager
- Throws:
StandardException
- Standard exception policy.
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