ReadOnlyAdminData (NetarchiveSuite 7.1 API)

java.lang.Object
- dk.netarkivet.archive.arcrepositoryadmin.AdminData
- - dk.netarkivet.archive.arcrepositoryadmin.ReadOnlyAdminData

```
@Deprecated
public class ReadOnlyAdminData
extends AdminData
```
Deprecated.
This class is only used by the deprecated class FileBasedActiveBitPreservation.

A version of AdminData that cannot be changed, but which allows synchronization through a file.
To avoid excessive reading of the admin data file and constant stat() calls, users of this are required call synchronize() before major chunks of use to ensure that the data are up to date.
Implementation note: Two alternative synch strategies are
1) Recreate ReadOnlyAdminData before every use -- this requires reading the entire file again (millions of lines).
2) Synchronize at every entry point (hasEntry, getState etc) -- this requires an expensive stat() call before every action, costly when iterating.

Field Summary

Fields
Modifier and Type Field Description

protected long lastModified
Deprecated.

The time the underlying file (adminDataFile) was last read in.
- Fields inherited from class dk.netarkivet.archive.arcrepositoryadmin.AdminData
  ADMIN_FILE_NAME, adminDataFile, adminDir, knownBitArchives, storeEntries, VERSION_NUMBER

Constructor Summary

Constructors
Constructor Description

ReadOnlyAdminData()
Deprecated.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`static ReadOnlyAdminData`	`getInstance()`	Deprecated. Returns _an_ instance if admin data.
`protected void`	`read()`	Deprecated. Read admin data.
`void`	`synchronize()`	Deprecated. Make sure that the internal admin data set is synchronized to the file.

Methods inherited from class dk.netarkivet.archive.arcrepositoryadmin.AdminData
getAllFileNames, getAllFileNames, getCheckSum, getEntry, getReadOnlyInstance, getState, getUpdateableInstance, hasEntry, hasReplyInfo, hasState, toString

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - lastModified
```
protected long lastModified
```
    Deprecated.
    
    The time the underlying file (adminDataFile) was last read in. If 0, we have never read admin data (the file doesn't exist).
- Constructor Detail
  - ReadOnlyAdminData
```
public ReadOnlyAdminData()
```
    Deprecated.
    
    See Also:
    
    AdminData()
- Method Detail
  - getInstance
```
public static ReadOnlyAdminData getInstance()
```
    Deprecated.
    
    Returns _an_ instance if admin data. This is _not_ a singleton.
    
    Returns:
    
    An instance of ReadOnlyAdminData
  - read
```
protected void read()
```
    Deprecated.
    
    Read admin data. This should not be used, use synchronize instead, which only rereads when necessary.
    
    Overrides:
    
    read in class AdminData
  - synchronize
```
public void synchronize()
```
    Deprecated.
    
    Make sure that the internal admin data set is synchronized to the file.