Changes for page Creating XWiki Components

Summary

• Page properties (2 modified, 0 added, 0 removed)

Details

Page properties

Author

...	...	@@ -1,1 +1,1 @@
1		-XWiki.VincentMassol
	1	+XWiki.ThomasMortagne

Content

...	...	@@ -373,25 +373,28 @@
373	373	}
374	374	{{/code}}
375	375
376		-If you need to access typed information then you'll obviously need to cast it to ##XWikiContext## as in:
	376	+If you need to access typed information then the easiest is to use a Provider the following way:
377	377
378		-{{code}}
	378	+{{code language="java"}}
379	379	@Inject
380		-private Execution execution;
	380	+private Provider<XWikiContext> xwikiContextProvider;
381	381	...
382		-public XWikiContext getXWikiContext()
383		-{
384		- return (XWikiContext) this.execution.getContext().getProperty("xwikicontext");
385		-}
	382	+XWikiContext xcontext = this.xwikiContextProvider.get();
386	386	{{/code}}
387	387
388		-Actually if you need the ##XWikiContext## object, then you can get it injected directly using:
	385	+which will always provide a usuable XWikiContext (if there is none in the current ExecutionContext it will create one).
389	389
	387	+Since 7.2 if you just want to get one if there is one (i.e. you don't need to automatically create a new one) you can use the "readonly" XWikiContext Provider as in:
	388	+
390	390	{{code language="java"}}
391	391	@Inject
	391	+@Named("readonly")
392	392	private Provider<XWikiContext> xwikiContextProvider;
393	393	...
394	394	XWikiContext xcontext = this.xwikiContextProvider.get();
	395	+if (xcontext != null) {
	396	+...
	397	+}
395	395	{{/code}}
396	396
397	397	If you want not just to use the Execution Context, but to make something available in every execution context, you can create an implementation of the **{{scm project="xwiki-commons" path="xwiki-commons-core/xwiki-commons-context/src/main/java/org/xwiki/context/ExecutionContextInitializer.java"}}ExecutionContextInitializer{{/scm}}** component, and populate newly created execution contexts, just like with [[velocity contexts>>#HFromwikipages]].