org.deegree_impl.enterprise.control
Class AbstractDBListener

java.lang.Object
  org.deegree_impl.enterprise.control.AbstractListener
      org.deegree_impl.enterprise.control.AbstractDBListener

All Implemented Interfaces:

java.util.EventListener, WebListener

Direct Known Subclasses:

FreeSearchListener, ThesaurusListener

public abstract class AbstractDBListener

extends AbstractListener

The class listens to the get request against iso 19115 formated metadata here the result shall be returned in full format

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Version:

$Revision: 1.1 $ $Date: 2004/03/15 07:38:17 $

Author:

Andreas Poth

Field Summary

Fields inherited from class org.deegree_impl.enterprise.control.AbstractListener

Constructor Summary

AbstractDBListener()

Method Summary

void	actionPerformed(FormEvent event) This method is called either to search for metadata or to lookup keywords from the thesaurus
protected abstract java.util.HashMap	createRequest(RPCWebEvent rpcEvent) creates a request from the RPCWebEvent passed to this listener
protected abstract void	handleResult(java.lang.Object result) handles the result of a 'FULL' catalog query
protected abstract java.util.HashMap	performRequest(RPCWebEvent event) performs the request contained in the passed RPCWebEvent
protected abstract void	validateRequest(RPCWebEvent event) validates the request to be performed.
protected abstract java.lang.Object	validateResult(java.util.HashMap result) validates the result of the catalog request and returns an Object depending on the results content.

Methods inherited from class org.deegree_impl.enterprise.control.AbstractListener

getAlternativeNextPage, getNextPage, getRequest, getReturnValue, gotoErrorPage, handle, setAlternativeNextPage, setDefaultAlternativeNextPage, setDefaultNextPage, setNextPage, setReturnValue, toModel

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractDBListener

public AbstractDBListener()

Method Detail

actionPerformed

public void actionPerformed(FormEvent event)

This method is called either to search for metadata or to lookup keywords from the thesaurus

Specified by:

actionPerformed in interface WebListener

Specified by:

actionPerformed in class AbstractListener

Parameters:

event -

validateRequest

protected abstract void validateRequest(RPCWebEvent event)
                                 throws ClientException

validates the request to be performed.

Parameters:

event - event object containing the request to be performed

Throws:

ClientException

createRequest

protected abstract java.util.HashMap createRequest(RPCWebEvent rpcEvent)
                                            throws ClientException

creates a request from the RPCWebEvent passed to this listener

Parameters:

rpcEvent - event object containing the request to be performed

Returns:

string representation of a request

Throws:

ClientException - will be throwns if it is impossible to create the request

performRequest

protected abstract java.util.HashMap performRequest(RPCWebEvent event)
                                             throws ClientException

performs the request contained in the passed RPCWebEvent

Parameters:

event - event object containing the request to be performed

Returns:

result of the GetRecord request

Throws:

ClientException

validateResult

protected abstract java.lang.Object validateResult(java.util.HashMap result)
                                            throws ClientException

validates the result of the catalog request and returns an Object depending on the results content.

Parameters:

result - result to a request

Returns:

validated result to a request

Throws:

ClientException

handleResult

protected abstract void handleResult(java.lang.Object result)
                              throws ClientException

handles the result of a 'FULL' catalog query

Parameters:

result - result to a GetRecord request

Throws:

ClientException