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Java Source Code / Java Documentation » Library » Tapestry » org.apache.tapestry 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


org.apache.tapestry.Link

All known Subclasses:   org.apache.tapestry.internal.services.LinkImpl,
Link
public interface Link (Code)
A link is the Tapestry representation of a URL or URI that triggers dynamic behavior. This link is in two parts: a path portion and a set of query parameters. A request for a link will ultimately be recognized by a Dispatcher .

Query parameter values are kept separate from the path portion to support encoding those values into hidden form fields (where appropriate).





Method Summary
 voidaddParameter(String parameterName, String value)
     Adds a parameter value.
 List<String>getParameterNames()
     The names of any additional query parameters for the URI.
 StringgetParameterValue(String name)
     Returns the value of a specifically named query parameter, or null if no such query parameter is stored in the link.
 StringtoRedirectURI()
     Returns the link as a redirect URI.
 StringtoURI()
     Returns the URI portion of the link.



Method Detail
addParameter
void addParameter(String parameterName, String value)(Code)
Adds a parameter value. The value will be added, as is, to the URL. In many cases, the value should be URL encoded via URLCodec .
Parameters:
  parameterName - the name of the parameter to store
Parameters:
  value - the value to store
throws:
  IllegalArgumentException - if the link already has a parameter with the given name



getParameterNames
List<String> getParameterNames()(Code)
The names of any additional query parameters for the URI. Query parameters store less regular or less often used values that can not be expressed in the path. They also are used to store, or link to, persistent state. list of query parameter names, is alphabetical order



getParameterValue
String getParameterValue(String name)(Code)
Returns the value of a specifically named query parameter, or null if no such query parameter is stored in the link.



toRedirectURI
String toRedirectURI()(Code)
Returns the link as a redirect URI. The URI includes any query parameters.



toURI
String toURI()(Code)
Returns the URI portion of the link. When the link is created for a form, this will not include query parameters. This is the same value returned from toString(). the URI, ready to be added as an element attribute



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