PluginBag.PluginHolder (Solr 9.0.0 core API)

java.lang.Object
- org.apache.solr.core.PluginBag.PluginHolder<T>

All Implemented Interfaces:

AutoCloseable, Supplier<T>

Direct Known Subclasses:

PackagePluginHolder, PluginBag.LazyPluginHolder, UpdateRequestProcessorChain.LazyUpdateProcessorFactoryHolder

Enclosing class:

PluginBag<T>
```
public static class PluginBag.PluginHolder<T>
extends Object
implements Supplier<T>, AutoCloseable
```
An indirect reference to a plugin. It just wraps a plugin instance. subclasses may choose to lazily load the plugin

Field Summary

Fields
Modifier and Type Field Description

protected T inst

protected PluginInfo pluginInfo

Constructor Summary

Constructors
Constructor	Description
`PluginHolder(PluginInfo info)`
`PluginHolder(PluginInfo info, T inst)`
`PluginHolder(T inst, SolrConfig.SolrPluginInfo info)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`close()`
`T`	`get()`
`String`	`getClassName()`
`Optional<T>`	`getInstance()`
`PluginInfo`	`getPluginInfo()`
`boolean`	`isLoaded()`
`String`	`toString()`

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

Field Detail

inst
```
protected volatile T inst
```

pluginInfo
```
protected final PluginInfo pluginInfo
```

Constructor Detail

PluginHolder

public PluginHolder(T inst,
                    SolrConfig.SolrPluginInfo info)

PluginHolder

public PluginHolder(PluginInfo info)

PluginHolder

public PluginHolder(PluginInfo info,
                    T inst)

Method Detail

getInstance
```
public Optional<T> getInstance()
```

get
```
public T get()
```
Specified by:

get in interface Supplier<T>

isLoaded
```
public boolean isLoaded()
```

close
```
public void close()
```
Specified by:

close in interface AutoCloseable

getClassName
```
public String getClassName()
```

getPluginInfo
```
public PluginInfo getPluginInfo()
```

toString
```
public String toString()
```
Overrides:

toString in class Object