public class ExtensionLoader<T> extends Object
限定符和类型 | 方法和说明 |
---|---|
void |
addExtension(String name,
Class<?> clazz)
Register new extension via API
|
List<T> |
getActivateExtension(URL url,
String key)
This is equivalent to
getActivateExtension(url, key, null) |
List<T> |
getActivateExtension(URL url,
String[] values)
This is equivalent to
getActivateExtension(url, values, null) |
List<T> |
getActivateExtension(URL url,
String[] values,
String group)
Get activate extensions.
|
List<T> |
getActivateExtension(URL url,
String key,
String group)
This is equivalent to
getActivateExtension(url, url.getParameter(key).split(","), null) |
T |
getAdaptiveExtension() |
T |
getDefaultExtension()
Return default extension, return
null if it's not configured. |
String |
getDefaultExtensionName()
Return default extension name, return
null if not configured. |
T |
getExtension(String name)
Find the extension with the given name.
|
static <T> ExtensionLoader<T> |
getExtensionLoader(Class<T> type) |
String |
getExtensionName(Class<?> extensionClass) |
String |
getExtensionName(T extensionInstance) |
T |
getLoadedExtension(String name)
Get extension's instance.
|
Set<String> |
getLoadedExtensions()
Return the list of extensions which are already loaded.
|
Set<String> |
getSupportedExtensions() |
boolean |
hasExtension(String name) |
void |
replaceExtension(String name,
Class<?> clazz)
已过时。
not recommended any longer, and use only when test
|
String |
toString() |
public static <T> ExtensionLoader<T> getExtensionLoader(Class<T> type)
public List<T> getActivateExtension(URL url, String key)
getActivateExtension(url, key, null)
url
- urlkey
- url parameter key which used to get extension point namesgetActivateExtension(com.alibaba.dubbo.common.URL, String, String)
public List<T> getActivateExtension(URL url, String[] values)
getActivateExtension(url, values, null)
url
- urlvalues
- extension point namesgetActivateExtension(com.alibaba.dubbo.common.URL, String[], String)
public List<T> getActivateExtension(URL url, String key, String group)
getActivateExtension(url, url.getParameter(key).split(","), null)
url
- urlkey
- url parameter key which used to get extension point namesgroup
- groupgetActivateExtension(com.alibaba.dubbo.common.URL, String[], String)
public List<T> getActivateExtension(URL url, String[] values, String group)
url
- urlvalues
- extension point namesgroup
- groupActivate
public T getLoadedExtension(String name)
null
if extension is not found or is not initialized. Pls. note
that this method will not trigger extension load.
In order to trigger extension load, call getExtension(String)
instead.
getExtension(String)
public Set<String> getLoadedExtensions()
Usually getSupportedExtensions()
should be called in order to get all extensions.
public T getExtension(String name)
IllegalStateException
will be thrown.public T getDefaultExtension()
null
if it's not configured.public boolean hasExtension(String name)
public String getDefaultExtensionName()
null
if not configured.public void addExtension(String name, Class<?> clazz)
name
- extension nameclazz
- extension classIllegalStateException
- when extension with the same name has already been registered.@Deprecated public void replaceExtension(String name, Class<?> clazz)
name
- extension nameclazz
- extension classIllegalStateException
- when extension to be placed doesn't existpublic T getAdaptiveExtension()
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