SimpleDispatcher (DSpace Kernel :: API and Implementation 7.6.1 API)

java.lang.Object
- org.dspace.checker.SimpleDispatcher

All Implemented Interfaces:

BitstreamDispatcher
```
public class SimpleDispatcher
extends Object
implements BitstreamDispatcher
```
An implementation of the selection strategy that selects bitstreams in the order that they were last checked, looping endlessly.

Author:

Jim Downing, Grace Carpenter, Nathan Sarr

Field Summary

Fields
Modifier and Type	Field	Description
`protected MostRecentChecksumService`	`checksumService`	Access for bitstream information
`protected Context`	`context`
`protected boolean`	`loopContinuously`	Should this dispatcher keep on dispatching around the collection?
`protected Date`	`processStartTime`	Date this dispatcher started dispatching.

Fields inherited from interface org.dspace.checker.BitstreamDispatcher
SENTINEL

Constructor Summary

Constructors
Constructor Description

SimpleDispatcher(Context context, Date startTime, boolean looping)
Creates a new SimpleDispatcher.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method Description

Bitstream next()
Selects the next candidate bitstream.
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - loopContinuously
```
protected boolean loopContinuously
```
    Should this dispatcher keep on dispatching around the collection?
  - processStartTime
```
protected Date processStartTime
```
    Date this dispatcher started dispatching.
  - checksumService
```
protected MostRecentChecksumService checksumService
```
    Access for bitstream information
  - context
```
protected Context context
```
- Constructor Detail
  - SimpleDispatcher
```
public SimpleDispatcher(Context context,
                        Date startTime,
                        boolean looping)
```
    Creates a new SimpleDispatcher.
    
    Parameters:
    
    context - Context
    
    startTime - timestamp for beginning of checker process
    
    looping - indicates whether checker should loop infinitely through most_recent_checksum table
- Method Detail
  - next
```
public Bitstream next()
               throws SQLException
```
    Selects the next candidate bitstream.
    
    Specified by:
    
    next in interface BitstreamDispatcher
    
    Returns:
    
    the next bitstream id, or BitstreamDispatcher.SENTINEL if there isn't another value
    
    Throws:
    
    SQLException - if database error
    
    See Also:
    
    BitstreamDispatcher.next()