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org.apache.catalina
Class InstanceEvent

java.lang.Object
  extended by java.util.EventObject
      extended by org.apache.catalina.InstanceEvent
All Implemented Interfaces:
java.io.Serializable
public final class InstanceEvent
extends java.util.EventObject

General event for notifying listeners of significant events related to a specific instance of a Servlet, or a specific instance of a Filter, as opposed to the Wrapper component that manages it.

Author:
Craig R. McClanahan
See Also:
Serialized Form

Field Summary
static java.lang.String AFTER_DESTROY_EVENT
          The event indicating that the destroy() method has returned.
static java.lang.String AFTER_DISPATCH_EVENT
          The event indicating that the service() method of a servlet accessed via a request dispatcher has returned.
static java.lang.String AFTER_FILTER_EVENT
          The event indicating that the doFilter() method of a Filter has returned.
static java.lang.String AFTER_INIT_EVENT
          The event indicating that the init() method has returned.
static java.lang.String AFTER_SERVICE_EVENT
          The event indicating that the service() method has returned.
static java.lang.String BEFORE_DESTROY_EVENT
          The event indicating that the destroy method is about to be called for this instance.
static java.lang.String BEFORE_DISPATCH_EVENT
          The event indicating that the service() method of a servlet accessed via a request dispatcher is about to be called.
static java.lang.String BEFORE_FILTER_EVENT
          The event indicating that the doFilter() method of a Filter is about to be called.
static java.lang.String BEFORE_INIT_EVENT
          The event indicating that the init() method is about to be called for this instance.
static java.lang.String BEFORE_SERVICE_EVENT
          The event indicating that the service() method is about to be called on a servlet.
 
Fields inherited from class java.util.EventObject
source
 
Constructor Summary
InstanceEvent(Wrapper wrapper, javax.servlet.Filter filter, java.lang.String type)
          Construct a new InstanceEvent with the specified parameters.
InstanceEvent(Wrapper wrapper, javax.servlet.Filter filter, java.lang.String type, javax.servlet.ServletRequest request, javax.servlet.ServletResponse response)
          Construct a new InstanceEvent with the specified parameters.
InstanceEvent(Wrapper wrapper, javax.servlet.Filter filter, java.lang.String type, javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, java.lang.Throwable exception)
          Construct a new InstanceEvent with the specified parameters.
InstanceEvent(Wrapper wrapper, javax.servlet.Filter filter, java.lang.String type, java.lang.Throwable exception)
          Construct a new InstanceEvent with the specified parameters.
InstanceEvent(Wrapper wrapper, javax.servlet.Servlet servlet, java.lang.String type)
          Construct a new InstanceEvent with the specified parameters.
InstanceEvent(Wrapper wrapper, javax.servlet.Servlet servlet, java.lang.String type, javax.servlet.ServletRequest request, javax.servlet.ServletResponse response)
          Construct a new InstanceEvent with the specified parameters.
InstanceEvent(Wrapper wrapper, javax.servlet.Servlet servlet, java.lang.String type, javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, java.lang.Throwable exception)
          Construct a new InstanceEvent with the specified parameters.
InstanceEvent(Wrapper wrapper, javax.servlet.Servlet servlet, java.lang.String type, java.lang.Throwable exception)
          Construct a new InstanceEvent with the specified parameters.
 
Method Summary
 java.lang.Throwable getException()
          Return the exception that occurred during the processing that was reported by this event.
 javax.servlet.Filter getFilter()
          Return the filter instance for which this event occurred.
 javax.servlet.ServletRequest getRequest()
          Return the servlet request for which this event occurred.
 javax.servlet.ServletResponse getResponse()
          Return the servlet response for which this event occurred.
 javax.servlet.Servlet getServlet()
          Return the servlet instance for which this event occurred.
 java.lang.String getType()
          Return the event type of this event.
 Wrapper getWrapper()
          Return the Wrapper managing the servlet instance for which this event occurred.
 
Methods inherited from class java.util.EventObject
getSource, toString
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

BEFORE_INIT_EVENT

public static final java.lang.String BEFORE_INIT_EVENT
The event indicating that the init() method is about to be called for this instance.

See Also:
Constant Field Values

AFTER_INIT_EVENT

public static final java.lang.String AFTER_INIT_EVENT
The event indicating that the init() method has returned.

See Also:
Constant Field Values

BEFORE_SERVICE_EVENT

public static final java.lang.String BEFORE_SERVICE_EVENT
The event indicating that the service() method is about to be called on a servlet. The servlet property contains the servlet being called, and the request and response properties contain the current request and response being processed.

See Also:
Constant Field Values

AFTER_SERVICE_EVENT

public static final java.lang.String AFTER_SERVICE_EVENT
The event indicating that the service() method has returned. The servlet property contains the servlet that was called, and the request and response properties contain the current request and response being processed.

See Also:
Constant Field Values

BEFORE_DESTROY_EVENT

public static final java.lang.String BEFORE_DESTROY_EVENT
The event indicating that the destroy method is about to be called for this instance.

See Also:
Constant Field Values

AFTER_DESTROY_EVENT

public static final java.lang.String AFTER_DESTROY_EVENT
The event indicating that the destroy() method has returned.

See Also:
Constant Field Values

BEFORE_DISPATCH_EVENT

public static final java.lang.String BEFORE_DISPATCH_EVENT
The event indicating that the service() method of a servlet accessed via a request dispatcher is about to be called. The servlet property contains a reference to the dispatched-to servlet instance, and the request and response properties contain the current request and response being processed. The wrapper property will contain a reference to the dispatched-to Wrapper.

See Also:
Constant Field Values

AFTER_DISPATCH_EVENT

public static final java.lang.String AFTER_DISPATCH_EVENT
The event indicating that the service() method of a servlet accessed via a request dispatcher has returned. The servlet property contains a reference to the dispatched-to servlet instance, and the request and response properties contain the current request and response being processed. The wrapper property will contain a reference to the dispatched-to Wrapper.

See Also:
Constant Field Values

BEFORE_FILTER_EVENT

public static final java.lang.String BEFORE_FILTER_EVENT
The event indicating that the doFilter() method of a Filter is about to be called. The filter property contains a reference to the relevant filter instance, and the request and response properties contain the current request and response being processed.

See Also:
Constant Field Values

AFTER_FILTER_EVENT

public static final java.lang.String AFTER_FILTER_EVENT
The event indicating that the doFilter() method of a Filter has returned. The filter property contains a reference to the relevant filter instance, and the request and response properties contain the current request and response being processed.

See Also:
Constant Field Values
Constructor Detail

InstanceEvent

public InstanceEvent(Wrapper wrapper,
                     javax.servlet.Filter filter,
                     java.lang.String type)
Construct a new InstanceEvent with the specified parameters. This constructor is used for filter lifecycle events.

Parameters:
wrapper - Wrapper managing this servlet instance
filter - Filter instance for which this event occurred
type - Event type (required)

InstanceEvent

public InstanceEvent(Wrapper wrapper,
                     javax.servlet.Filter filter,
                     java.lang.String type,
                     java.lang.Throwable exception)
Construct a new InstanceEvent with the specified parameters. This constructor is used for filter lifecycle events.

Parameters:
wrapper - Wrapper managing this servlet instance
filter - Filter instance for which this event occurred
type - Event type (required)
exception - Exception that occurred

InstanceEvent

public InstanceEvent(Wrapper wrapper,
                     javax.servlet.Filter filter,
                     java.lang.String type,
                     javax.servlet.ServletRequest request,
                     javax.servlet.ServletResponse response)
Construct a new InstanceEvent with the specified parameters. This constructor is used for filter processing events.

Parameters:
wrapper - Wrapper managing this servlet instance
filter - Filter instance for which this event occurred
type - Event type (required)
request - Servlet request we are processing
response - Servlet response we are processing

InstanceEvent

public InstanceEvent(Wrapper wrapper,
                     javax.servlet.Filter filter,
                     java.lang.String type,
                     javax.servlet.ServletRequest request,
                     javax.servlet.ServletResponse response,
                     java.lang.Throwable exception)
Construct a new InstanceEvent with the specified parameters. This constructor is used for filter processing events.

Parameters:
wrapper - Wrapper managing this servlet instance
filter - Filter instance for which this event occurred
type - Event type (required)
request - Servlet request we are processing
response - Servlet response we are processing
exception - Exception that occurred

InstanceEvent

public InstanceEvent(Wrapper wrapper,
                     javax.servlet.Servlet servlet,
                     java.lang.String type)
Construct a new InstanceEvent with the specified parameters. This constructor is used for processing servlet lifecycle events.

Parameters:
wrapper - Wrapper managing this servlet instance
servlet - Servlet instance for which this event occurred
type - Event type (required)

InstanceEvent

public InstanceEvent(Wrapper wrapper,
                     javax.servlet.Servlet servlet,
                     java.lang.String type,
                     java.lang.Throwable exception)
Construct a new InstanceEvent with the specified parameters. This constructor is used for processing servlet lifecycle events.

Parameters:
wrapper - Wrapper managing this servlet instance
servlet - Servlet instance for which this event occurred
type - Event type (required)
exception - Exception that occurred

InstanceEvent

public InstanceEvent(Wrapper wrapper,
                     javax.servlet.Servlet servlet,
                     java.lang.String type,
                     javax.servlet.ServletRequest request,
                     javax.servlet.ServletResponse response)
Construct a new InstanceEvent with the specified parameters. This constructor is used for processing servlet processing events.

Parameters:
wrapper - Wrapper managing this servlet instance
servlet - Servlet instance for which this event occurred
type - Event type (required)
request - Servlet request we are processing
response - Servlet response we are processing

InstanceEvent

public InstanceEvent(Wrapper wrapper,
                     javax.servlet.Servlet servlet,
                     java.lang.String type,
                     javax.servlet.ServletRequest request,
                     javax.servlet.ServletResponse response,
                     java.lang.Throwable exception)
Construct a new InstanceEvent with the specified parameters. This constructor is used for processing servlet processing events.

Parameters:
wrapper - Wrapper managing this servlet instance
servlet - Servlet instance for which this event occurred
type - Event type (required)
request - Servlet request we are processing
response - Servlet response we are processing
exception - Exception that occurred
Method Detail

getException

public java.lang.Throwable getException()
Return the exception that occurred during the processing that was reported by this event.

getFilter

public javax.servlet.Filter getFilter()
Return the filter instance for which this event occurred.

getRequest

public javax.servlet.ServletRequest getRequest()
Return the servlet request for which this event occurred.

getResponse

public javax.servlet.ServletResponse getResponse()
Return the servlet response for which this event occurred.

getServlet

public javax.servlet.Servlet getServlet()
Return the servlet instance for which this event occurred.

getType

public java.lang.String getType()
Return the event type of this event.

getWrapper

public Wrapper getWrapper()
Return the Wrapper managing the servlet instance for which this event occurred.

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Apache Tomcat 6.0.53
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