public abstract class AbstractPluginLoader<T>
extends java.lang.Object
Modifier and Type | Class and Description |
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private class |
AbstractPluginLoader.PluginInitInfo
Internal class to hold onto initialization info so that it can be initialized
after it is registered.
|
Modifier and Type | Field and Description |
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static org.slf4j.Logger |
log |
private boolean |
preRegister |
private boolean |
requireName |
private java.lang.String |
type |
Constructor and Description |
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AbstractPluginLoader(java.lang.String type) |
AbstractPluginLoader(java.lang.String type,
boolean preRegister,
boolean requireName) |
Modifier and Type | Method and Description |
---|---|
protected T |
create(ResourceLoader loader,
java.lang.String name,
java.lang.String className,
org.w3c.dom.Node node)
Create a plugin from an XML configuration.
|
protected java.lang.String[] |
getDefaultPackages()
Where to look for classes
|
protected abstract void |
init(T plugin,
org.w3c.dom.Node node)
Initialize the plugin.
|
T |
load(ResourceLoader loader,
org.w3c.dom.NodeList nodes)
Given a NodeList from XML in the form:
|
T |
loadSingle(ResourceLoader loader,
org.w3c.dom.Node node)
Given a NodeList from XML in the form:
|
protected abstract T |
register(java.lang.String name,
T plugin)
Register a plugin with a given name.
|
public static org.slf4j.Logger log
private final java.lang.String type
private final boolean preRegister
private final boolean requireName
public AbstractPluginLoader(java.lang.String type, boolean preRegister, boolean requireName)
type
- is the 'type' name included in error messages.preRegister
- if true, this will first register all Plugins, then it will initialize them.public AbstractPluginLoader(java.lang.String type)
protected java.lang.String[] getDefaultPackages()
protected T create(ResourceLoader loader, java.lang.String name, java.lang.String className, org.w3c.dom.Node node) throws java.lang.Exception
name
- - The registered name. In the above example: "name1"className
- - class name for requested plugin. In the above example: "solr.ClassName"node
- - the XML node defining this pluginjava.lang.Exception
protected abstract T register(java.lang.String name, T plugin) throws java.lang.Exception
java.lang.Exception
protected abstract void init(T plugin, org.w3c.dom.Node node) throws java.lang.Exception
plugin
- - the plugin to initializenode
- - the XML node defining this pluginjava.lang.Exception
public T load(ResourceLoader loader, org.w3c.dom.NodeList nodes)
public T loadSingle(ResourceLoader loader, org.w3c.dom.Node node)