Package org.camunda.connect.impl

Class AbstractRequestInvocation<T>

java.lang.Object

org.camunda.connect.impl.AbstractRequestInvocation<T>

All Implemented Interfaces:

ConnectorInvocation

Direct Known Subclasses:

HttpRequestInvocation

public abstract class AbstractRequestInvocation<T>
extends Object
implements ConnectorInvocation

A simple invocation implementation routing a request through a chain of interceptors. Implementations must implement the invokeTarget() method in order to implement the actual request execution / target invocation.

Author:

Daniel Meyer

Field Summary

Fields

Modifier and Type	Field	Description
protected int	currentIndex
protected List<ConnectorRequestInterceptor>	interceptorChain
protected ConnectorRequest<?>	request
protected T	target

Constructor Summary

Constructors

Constructor	Description
AbstractRequestInvocation(T target, ConnectorRequest<?> request, List<ConnectorRequestInterceptor> interceptorChain)

Method Summary

Modifier and Type	Method	Description
ConnectorRequest<?>	getRequest()	The connector request as created through the API.
T	getTarget()	The underlying raw request.
abstract Object	invokeTarget()
Object	proceed()	Makes the request proceed through the interceptor chain.

Methods inherited from class java.lang.Object

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

Field Details

target

protected T target

currentIndex

protected int currentIndex

interceptorChain

protected List<ConnectorRequestInterceptor> interceptorChain

request

protected ConnectorRequest<?> request

Constructor Details

AbstractRequestInvocation

public AbstractRequestInvocation(T target,
 ConnectorRequest<?> request,
 List<ConnectorRequestInterceptor> interceptorChain)

Method Details

getTarget

public T getTarget()

Description copied from interface: ConnectorInvocation

The underlying raw request.

Specified by:

getTarget in interface ConnectorInvocation

Returns:

the raw request as executed by the connector

getRequest

public ConnectorRequest<?> getRequest()

Description copied from interface: ConnectorInvocation

The connector request as created through the API. Accessing the request from an interceptor may be useful for setting additional properties on the raw request (returned by ConnectorInvocation.getTarget()) that are not supported by the connector.

NOTE: setting parameters on the request (via) ConnectorRequest.setRequestParameter(String, Object) will not have any effects once the request is executed.

Specified by:

getRequest in interface ConnectorInvocation

Returns:

the connector request

proceed

public Object proceed()
               throws Exception

Description copied from interface: ConnectorInvocation

Makes the request proceed through the interceptor chain. ConnectorRequestInterceptor implementations are responsible for calling this method on the invocation.

Specified by:

proceed in interface ConnectorInvocation

Returns:

the result of the invocation.

Throws:

Exception

invokeTarget

public abstract Object invokeTarget()
                             throws Exception

Throws:

Exception