org.apache.catalina.core
Class StandardEngine

java.lang.Object
  org.apache.catalina.util.LifecycleBase
      org.apache.catalina.util.LifecycleMBeanBase
          org.apache.catalina.core.ContainerBase
              org.apache.catalina.core.StandardEngine

All Implemented Interfaces:

MBeanRegistration, Container, Engine, Lifecycle

public class StandardEngine
extends ContainerBase
implements Engine

Standard implementation of the Engine interface. Each child container must be a Host implementation to process the specific fully qualified host name of that virtual host.
You can set the jvmRoute direct or with the System.property jvmRoute.

Version:

$Id: StandardEngine.java 996231 2010-09-12 01:25:03Z markt $

Author:

Craig R. McClanahan

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.catalina.core.ContainerBase

ContainerBase.ContainerBackgroundProcessor, ContainerBase.NoopAccessLog, ContainerBase.PrivilegedAddChild

Field Summary

Fields inherited from class org.apache.catalina.core.ContainerBase

accessLog, backgroundProcessorDelay, children, cluster, listeners, loader, logger, logName, manager, name, parent, parentClassLoader, pipeline, realm, resources, sm, startChildren, support

Fields inherited from class org.apache.catalina.util.LifecycleMBeanBase

mserver

Fields inherited from interface org.apache.catalina.Container

ADD_CHILD_EVENT, ADD_MAPPER_EVENT, ADD_VALVE_EVENT, REMOVE_CHILD_EVENT, REMOVE_MAPPER_EVENT, REMOVE_VALVE_EVENT

Fields inherited from interface org.apache.catalina.Lifecycle

AFTER_INIT_EVENT, AFTER_START_EVENT, AFTER_STOP_EVENT, BEFORE_INIT_EVENT, BEFORE_START_EVENT, BEFORE_STOP_EVENT, CONFIGURE_START_EVENT, CONFIGURE_STOP_EVENT, DESTROY_EVENT, PERIODIC_EVENT, START_EVENT, STOP_EVENT

Constructor Summary

StandardEngine()
Create a new StandardEngine component with the default basic Valve.

Method Summary

void	addChild(Container child) Add a child Container, only if the proposed child is an implementation of Host.
String	getBaseDir()
String	getDefaultHost() Return the default host.
String	getInfo() Return descriptive information about this Container implementation and the corresponding version number, in the format <description>/<version>.
String	getJvmRoute() Retrieve the cluster-wide unique identifier for this Engine.
protected String	getObjectNameKeyProperties() Allow sub-classes to specify the key properties component of the ObjectName that will be used to register this component.
ClassLoader	getParentClassLoader() Return the parent class loader for this component.
Realm	getRealm() Provide a default in case no explicit configuration is set
Service	getService() Return the Service with which we are associated (if any).
void	logAccess(Request request, Response response, long time, boolean useDefault) Override the default implementation.
void	setBaseDir(String baseDir)
void	setDefaultHost(String host) Set the default host.
void	setJvmRoute(String routeId) Set the cluster-wide unique identifier for this Engine.
void	setParent(Container container) Disallow any attempt to set a parent for this Container, since an Engine is supposed to be at the top of the Container hierarchy.
void	setService(Service service) Set the Service with which we are associated (if any).
protected void	startInternal() Start this component and implement the requirements of LifecycleBase.startInternal().
String	toString() Return a String representation of this component.

Methods inherited from class org.apache.catalina.core.ContainerBase

addContainerListener, addPropertyChangeListener, addValve, backgroundProcess, destroyInternal, findChild, findChildren, findContainerListeners, fireContainerEvent, getAccessLog, getBackgroundProcessorDelay, getChildren, getCluster, getDomainInternal, getLoader, getLogger, getManager, getMappingObject, getName, getParent, getPipeline, getResources, getStartChildren, invoke, logName, removeChild, removeContainerListener, removePropertyChangeListener, setBackgroundProcessorDelay, setCluster, setLoader, setManager, setName, setParentClassLoader, setRealm, setResources, setStartChildren, stopInternal, threadStart, threadStop

Methods inherited from class org.apache.catalina.util.LifecycleMBeanBase

getDomain, getObjectName, initInternal, postDeregister, postRegister, preDeregister, preRegister, register, setDomain, unregister

Methods inherited from class org.apache.catalina.util.LifecycleBase

addLifecycleListener, destroy, findLifecycleListeners, fireLifecycleEvent, getState, getStateName, init, removeLifecycleListener, setState, setState, start, stop

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.catalina.Container

addContainerListener, addPropertyChangeListener, backgroundProcess, findChild, findChildren, findContainerListeners, fireContainerEvent, getAccessLog, getBackgroundProcessorDelay, getCluster, getLoader, getLogger, getManager, getMappingObject, getName, getObjectName, getParent, getPipeline, getResources, invoke, removeChild, removeContainerListener, removePropertyChangeListener, setBackgroundProcessorDelay, setCluster, setLoader, setManager, setName, setParentClassLoader, setRealm, setResources

Methods inherited from interface org.apache.catalina.Lifecycle

addLifecycleListener, destroy, findLifecycleListeners, getState, getStateName, init, removeLifecycleListener, start, stop

Constructor Detail

StandardEngine

public StandardEngine()

Create a new StandardEngine component with the default basic Valve.

Method Detail

getRealm

public Realm getRealm()

Provide a default in case no explicit configuration is set

Specified by:

getRealm in interface Container

Overrides:

getRealm in class ContainerBase

Returns:

configured realm, or a JAAS realm by default

getDefaultHost

public String getDefaultHost()

Return the default host.

Specified by:

getDefaultHost in interface Engine

setDefaultHost

public void setDefaultHost(String host)

Set the default host.

Specified by:

setDefaultHost in interface Engine

Parameters:

host - The new default host

setJvmRoute

public void setJvmRoute(String routeId)

Set the cluster-wide unique identifier for this Engine. This value is only useful in a load-balancing scenario.

This property should not be changed once it is set.

Specified by:

setJvmRoute in interface Engine

Parameters:

routeId - the (new) JVM Route ID. Each Engine within a cluster must have a unique JVM Route ID.

getJvmRoute

public String getJvmRoute()

Retrieve the cluster-wide unique identifier for this Engine. This value is only useful in a load-balancing scenario.

Specified by:

getJvmRoute in interface Engine

getService

public Service getService()

Return the Service with which we are associated (if any).

Specified by:

getService in interface Engine

setService

public void setService(Service service)

Set the Service with which we are associated (if any).

Specified by:

setService in interface Engine

Parameters:

service - The service that owns this Engine

getBaseDir

public String getBaseDir()

setBaseDir

public void setBaseDir(String baseDir)

addChild

public void addChild(Container child)

Add a child Container, only if the proposed child is an implementation of Host.

Specified by:

addChild in interface Container

Overrides:

addChild in class ContainerBase

Parameters:

child - Child container to be added

getInfo

public String getInfo()

Return descriptive information about this Container implementation and the corresponding version number, in the format <description>/<version>.

Specified by:

getInfo in interface Container

Overrides:

getInfo in class ContainerBase

setParent

public void setParent(Container container)

Disallow any attempt to set a parent for this Container, since an Engine is supposed to be at the top of the Container hierarchy.

Specified by:

setParent in interface Container

Overrides:

setParent in class ContainerBase

Parameters:

container - Proposed parent Container

startInternal

protected void startInternal()
                      throws LifecycleException

Start this component and implement the requirements of LifecycleBase.startInternal().

Overrides:

startInternal in class ContainerBase

Throws:

LifecycleException - if this component detects a fatal error that prevents this component from being used

toString

public String toString()

Return a String representation of this component.

Overrides:

toString in class Object

logAccess

public void logAccess(Request request,
                      Response response,
                      long time,
                      boolean useDefault)

Override the default implementation. If no access log is defined for the Engine, look for one in the Engine's default host and then the default host's ROOT context. If still none is found, return the default NoOp access log.

Specified by:

logAccess in interface Container

Overrides:

logAccess in class ContainerBase

Parameters:

request - Request (associated with the response) to log

response - Response (associated with the request) to log

time - Time taken to process the request/response in milliseconds (use 0 if not known)

useDefault - Flag that indicates that the request/response should be logged in the engine's default access log

getParentClassLoader

public ClassLoader getParentClassLoader()

Return the parent class loader for this component.

Specified by:

getParentClassLoader in interface Container

Overrides:

getParentClassLoader in class ContainerBase

getObjectNameKeyProperties

protected String getObjectNameKeyProperties()

Description copied from class: LifecycleMBeanBase

Allow sub-classes to specify the key properties component of the ObjectName that will be used to register this component.

Specified by:

getObjectNameKeyProperties in class LifecycleMBeanBase

Returns:

The string representation of the key properties component of the desired ObjectName