DefaultScheduler (storm-crawler-core 2.8 API)

java.lang.Object
- com.digitalpebble.stormcrawler.persistence.Scheduler
- - com.digitalpebble.stormcrawler.persistence.DefaultScheduler

Direct Known Subclasses:

AdaptiveScheduler
```
public class DefaultScheduler
extends Scheduler
```
Schedules a nextFetchDate based on the configuration

Field Summary

Fields
Modifier and Type Field Description

static String DELAY_METADATA
Key used to pass a custom delay via metadata.
- Fields inherited from class com.digitalpebble.stormcrawler.persistence.Scheduler
  schedulerClassParamName

Constructor Summary

Constructors
Constructor Description

DefaultScheduler()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected Optional<Integer>`	`checkCustomInterval(Metadata metadata, Status s)`	Returns the first matching custom interval
`void`	`init(Map<String,Object> stormConf)`	Configuration of the scheduler based on the config.
`Optional<Date>`	`schedule(Status status, Metadata metadata)`	Returns an optional Date indicating when the document should be refetched next, based on its status.

Methods inherited from class com.digitalpebble.stormcrawler.persistence.Scheduler
getInstance

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

- Field Detail
  - DELAY_METADATA
```
public static final String DELAY_METADATA
```
    Key used to pass a custom delay via metadata. Used by the sitemaps to stagger the scheduling of URLs.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - DefaultScheduler
```
public DefaultScheduler()
```
- Method Detail
  - init
```
public void init(Map<String,Object> stormConf)
```
    Description copied from class: Scheduler
    
    Configuration of the scheduler based on the config. Should be called by Scheduler.getInstance() *
    
    Specified by:
    
    init in class Scheduler
  - schedule
```
public Optional<Date> schedule(Status status,
                               Metadata metadata)
```
    Description copied from class: Scheduler
    
    Returns an optional Date indicating when the document should be refetched next, based on its status. It is empty if the URL should never be refetched.
    
    Specified by:
    
    schedule in class Scheduler
  - checkCustomInterval
```
protected final Optional<Integer> checkCustomInterval(Metadata metadata,
                                                      Status s)
```
    Returns the first matching custom interval