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java.lang.Objectorg.apache.avalon.framework.logger.AbstractLogEnabled
org.apache.cocoon.components.flow.AbstractInterpreter
org.apache.cocoon.components.flow.java.JavaInterpreter
Implementation of the java flow interpreter.
Nested Class Summary |
Nested classes inherited from class org.apache.cocoon.components.flow.Interpreter |
Interpreter.Argument |
Field Summary |
Fields inherited from class org.apache.cocoon.components.flow.AbstractInterpreter |
avalonContext, checkTime, context, continuationsMgr, manager, needResolve, reloadScripts |
Fields inherited from interface org.apache.cocoon.components.flow.Interpreter |
ROLE |
Constructor Summary | |
JavaInterpreter()
|
Method Summary | |
void |
callFunction(String methodName,
List params,
Redirector redirector)
This method is called from the sitemap, using the syntax <map:call function="..." |
void |
handleContinuation(String id,
List params,
Redirector redirector)
Continues a previously started processing. |
Methods inherited from class org.apache.cocoon.components.flow.AbstractInterpreter |
configure, contextualize, dispose, forwardTo, getInterpreterID, process, register, service, setInterpreterID |
Methods inherited from class org.apache.avalon.framework.logger.AbstractLogEnabled |
enableLogging, getLogger, setupLogger, setupLogger, setupLogger |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public JavaInterpreter()
Method Detail |
public void callFunction(String methodName, List params, Redirector redirector) throws Exception
Interpreter
<map:call function="..."/>The method will execute the named function, which must be defined in the given language. There is no assumption made on how various arguments are passed to the function.
The params
argument is a List
object
that contains Interpreter.Argument
instances,
representing the parameters to be passed to the called
function. An Argument
instance is a key-value pair,
where the key is the name of the parameter, and the value is its
desired value. Most languages will ignore the name value and
simply pass to the function, in a positional order, the values of
the argument. Some languages however can pass the arguments in a
different order than the original prototype of the function. For
these languages the ability to associate the actual argument with
a formal parameter using its name is essential.
A particular language implementation may decide to put the environment, request, response etc. objects in the dynamic scope available to the function at the time of the call. Other implementations may decide to pass these as arguments to the called function.
The current implementation assumes the sitemap implementation is TreeProcessor.
methodName
- a String
value, the name of the
function to callparams
- a List
object whose components are
CallFunctionNode.Argument instances. The interpretation of the
parameters is left to the actual implementation of the
interpreter.redirector
- a Redirector
used to call views
Exception
public void handleContinuation(String id, List params, Redirector redirector) throws Exception
Interpreter
continuationId
string.
id
- a String
valueparams
- a List
value, containing the
parameters to be passed when invoking the continuation. As
opposed to the parameters passed by callFunction
,
these parameters will only become available in the language's
environment, if at all.redirector
- a Redirector
used to call views
Exception
- if an error occurs
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