Shard (Solr 9.0.0 core API)

```
public interface Shard
```
Shard in a SolrCollection, i.e. a subset of the data indexed in that collection.

Nested Class Summary

Nested Classes
Modifier and Type Interface Description

static class Shard.ShardState

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`SolrCollection`	`getCollection()`
`Replica`	`getLeader()`
`Replica`	`getReplica(String name)`	Returns the `Replica` of the given name for that shard, if such a replica exists.
`String`	`getShardName()`
`Shard.ShardState`	`getState()`
`Iterator<Replica>`	`iterator()`
`Iterable<Replica>`	`replicas()`	Allow foreach iteration on replicas such as: `for (Replica r : shard.replicas()) {...}`.

- Method Detail
  - getShardName
```
String getShardName()
```
  - getCollection
```
SolrCollection getCollection()
```
    Returns:
    
    the collection this shard is part of
  - getReplica
```
Replica getReplica(String name)
```
    Returns the Replica of the given name for that shard, if such a replica exists.
    
    Returns:
    
    null if the replica does not (or does not yet) exist for the shard.
  - iterator
```
Iterator<Replica> iterator()
```
    Returns:
    
    an iterator over Replicas already existing for this Shard.
  - replicas
```
Iterable<Replica> replicas()
```
    Allow foreach iteration on replicas such as: for (Replica r : shard.replicas()) {...}.
  - getLeader
```
Replica getLeader()
```
    Returns:
    
    the current leader Replica for this Shard. Note that by the time this method returns the leader might have changed. Also, if there's no leader for any reason (don't shoot the messenger), this method will return null.
  - getState
```
Shard.ShardState getState()
```