session-scoped variables.  Scoped variables will be introduced in chapter 9.4.6 which is about Wicket metadata. The following picture is an overview of these two caching levels: 47 Wicket allows us to set able to work with them for the rest of the request process. 9.4.6. Storing arbitrary objects with metadata JavaServer Pages Specification1 defines 4 scopes in which a page can create and access a variable is rather an alternative to it), it offers a feature called metadata which resembles scoped variables but is much more powerful. Metadata is quite similar to a Java Map in that it stores pairs of key-value

session-scoped variables.  Scoped variables will be introduced in chapter 9.4.6 which is about Wicket metadata. The following picture is an overview of these two caching levels: 46 Wicket allows us to set able to work with them for the rest of the request process. 9.4.6. Storing arbitrary objects with metadata JavaServer Pages Specification1 defines 4 scopes in which a page can create and access a variable is rather an alternative to it), it offers a feature called metadata which resembles scoped variables but is much more powerful. Metadata is quite similar to a Java Map in that it stores pairs of key-value

able to work with them for the rest of the request process. 9.4.6. Storing arbitrary objects with metadata JavaServer Pages Specification1 defines 4 scopes in which a page can create and access a variable is rather an alternative to it), it offers a feature called metadata which resembles scoped variables but is much more powerful. Metadata is quite similar to a Java Map in that it stores pairs of key-value own metadata store: RequestCycle, Session, Application and Component. The key used for metadata is an instance of class org.apache.wicket.MetaDataKey. To put an arbitrary object into metadata we must

able to work with them for the rest of the request process. 9.4.6. Storing arbitrary objects with metadata JavaServer Pages Specification1 defines 4 scopes in which a page can create and access a variable is rather an alternative to it), it offers a feature called metadata which resembles scoped variables but is much more powerful. Metadata is quite similar to a Java Map in that it stores pairs of key-value In Wicket each of the following classes has its own metadata store: RequestCycle, Session, Application and Component. 59 The key used for metadata is an instance of class org.apache.wicket.MetaDataKey