InitializationLockDao (hybris Commerce Suite 2011)

All Superinterfaces:

java.io.Serializable

All Known Implementing Classes:

DefaultInitLockDao
```
public interface InitializationLockDao
extends java.io.Serializable
```
Database specific logic for InitializationLockHandler.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`createTable()`	Optionally creates table.
`long`	`getUniqueInstanceIdentifier()`	Identifier specific for running platform.
`boolean`	`insertRow()`	Optionally inserts lock row.
`boolean`	`lockRow(Tenant forTenant, java.lang.String processName)`	Locks row using cluster node ID from given tenant.
`InitializationLockInfo`	`readLockInfo()`	Reads current locking information.
`boolean`	`releaseRow(Tenant forTenant)`	Releases existing lock.

- Method Detail
  - readLockInfo
```
InitializationLockInfo readLockInfo()
```
    Reads current locking information.
    
    Returns:
    
    null if no lock row or table exists, the info object otherwise
  - releaseRow
```
boolean releaseRow(Tenant forTenant)
```
    Releases existing lock. Tenant must have cluster node ID that matches the one inside the lock!
  - lockRow
```
boolean lockRow(Tenant forTenant,
                java.lang.String processName)
```
    Locks row using cluster node ID from given tenant. Requires lock not being taken before (no matter by which cluster node!).
  - insertRow
```
boolean insertRow()
```
    Optionally inserts lock row.
    
    Returns:
    
    true if row could be inserted or row already exists, false on other errors (e.g. table not existing)
  - createTable
```
void createTable()
```
    Optionally creates table. If table already exists it does nothing.
  - getUniqueInstanceIdentifier
```
long getUniqueInstanceIdentifier()
```
    Identifier specific for running platform. Every platform startup standalone or other should have own unique identifier.