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## org.apache.catalina.core
Class StandardEngine

    java.lang.Object
      org.apache.catalina.core.ContainerBase
          org.apache.catalina.core.StandardEngine

All Implemented Interfaces:
  Container, Engine, Lifecycle, javax.management.MBeanRegistration, Pipeline, java.io.Serializable

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.

Version:
  $Revision: 1.22 $ $Date: 2003/10/21 00:18:25 $
Author:
  Craig R. McClanahan
See Also:
  Serialized Form

Nested Class Summary

Nested classes inherited from class org.apache.catalina.core.ContainerBase
`ContainerBase.ContainerBackgroundProcessor, ContainerBase.PrivilegedAddChild`

Field Summary

Fields inherited from class org.apache.catalina.core.ContainerBase
`backgroundProcessorDelay, children, cluster, controller, debug, domain, lifecycle, listeners, loader, logger, manager, mserver, name, oname, parent, parentClassLoader, pipeline, realm, resources, sm, started, suffix, support, type`

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_START_EVENT, AFTER_STOP_EVENT, BEFORE_START_EVENT, BEFORE_STOP_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.
`void` | `addDefaultContext(DefaultContext defaultContext)` Set the DefaultContext for new web applications.
`javax.management.ObjectName` | `createObjectName(java.lang.String domain, javax.management.ObjectName parent)`
`void` | `destroy()`
`java.lang.String` | `getBaseDir()`
`DefaultContext` | `getDefaultContext()` Retrieve the DefaultContext for new web applications.
`java.lang.String` | `getDefaultHost()` Return the default host.
`java.lang.String` | `getDomain()`
`java.lang.String` | `getInfo()` Return descriptive information about this Container implementation and the corresponding version number, in the format `<description>/<version>`.
`java.lang.String` | `getJvmRoute()` Retrieve the cluster-wide unique identifier for this Engine.
`java.lang.String` | `getMbeansFile()`
`javax.management.ObjectName` | `getParentName()`
`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` | `importDefaultContext(Context context)` Import the DefaultContext config into a web application context.
`void` | `init()` Init method, part of the MBean lifecycle.
`void` | `installDefaultContext(Context context)` Install the StandardContext portion of the DefaultContext configuration into current Context.
`javax.management.ObjectName` | `preRegister(javax.management.MBeanServer server, javax.management.ObjectName name)`
`void` | `setBaseDir(java.lang.String baseDir)`
`void` | `setDefaultHost(java.lang.String host)` Set the default host.
`void` | `setDomain(java.lang.String domain)`
`void` | `setJvmRoute(java.lang.String routeId)` Set the cluster-wide unique identifier for this Engine.
`void` | `setMbeansFile(java.lang.String mbeansFile)`
`void` | `setName(java.lang.String name)` Set a name string (suitable for use by humans) that describes this Container.
`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).
`void` | `start()` Start this Engine component.
`void` | `stop()` Gracefully shut down active use of the public methods of this Component.
`java.lang.String` | `toString()` Return a String representation of this component.

Methods inherited from class org.apache.catalina.core.ContainerBase
`addContainerListener, addLifecycleListener, addPropertyChangeListener, addValve, backgroundProcess, findChild, findChildren, findContainerListeners, findLifecycleListeners, fireContainerEvent, getBackgroundProcessorDelay, getBasic, getChildren, getCluster, getContainerSuffix, getDebug, getJmxName, getJSR77Suffix, getLoader, getLogger, getManager, getMappingObject, getName, getObjectName, getParent, getParentClassLoader, getPipeline, getResources, getType, getValveObjectNames, getValves, invoke, log, log, logName, postDeregister, postRegister, preDeregister, removeChild, removeContainerListener, removeLifecycleListener, removePropertyChangeListener, removeValve, setBackgroundProcessorDelay, setBasic, setCluster, setDebug, setLoader, setLogger, setManager, setParentClassLoader, setRealm, setResources, threadStart, threadStop`

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, getBackgroundProcessorDelay, getCluster, getLoader, getLogger, getManager, getMappingObject, getName, getParent, getParentClassLoader, getPipeline, getResources, invoke, removeChild, removeContainerListener, removePropertyChangeListener, setBackgroundProcessorDelay, setCluster, setLoader, setLogger, setManager, setParentClassLoader, setRealm, setResources`

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 java.lang.String getDefaultHost()

  Return the default host.

  Specified by:
    `getDefaultHost` in interface `Engine`

### setDefaultHost

    public void setDefaultHost(java.lang.String host)

  Set the default host.

  Specified by:
    `setDefaultHost` in interface `Engine`
  Parameters:
    `host` - The new default host

### setName

    public void setName(java.lang.String name)

  Description copied from interface: `Container`
  Set a name string (suitable for use by humans) that describes this Container. Within the set of child containers belonging to a particular parent, Container names must be unique.

  Specified by:
    `setName` in interface `Container`
  Overrides:
    `setName` in class `ContainerBase`
  Parameters:
    `name` - New name of this container

### setJvmRoute

    public void setJvmRoute(java.lang.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 java.lang.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`

### addDefaultContext

    public void addDefaultContext(DefaultContext defaultContext)

  Set the DefaultContext for new web applications.

  Specified by:
    `addDefaultContext` in interface `Engine`
  Parameters:
    `defaultContext` - The new DefaultContext

### getDefaultContext

    public DefaultContext getDefaultContext()

  Retrieve the DefaultContext for new web applications.

  Specified by:
    `getDefaultContext` 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

### getMbeansFile

    public java.lang.String getMbeansFile()

### setMbeansFile

    public void setMbeansFile(java.lang.String mbeansFile)

### getBaseDir

    public java.lang.String getBaseDir()

### setBaseDir

    public void setBaseDir(java.lang.String baseDir)

### installDefaultContext

    public void installDefaultContext(Context context)

  Install the StandardContext portion of the DefaultContext configuration into current Context.

  Parameters:
    `context` - current web application context

### importDefaultContext

    public void importDefaultContext(Context context)

  Import the DefaultContext config into a web application context.

  Specified by:
    `importDefaultContext` in interface `Engine`
  Parameters:
    `context` - web application context to import default context

### 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 java.lang.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

### init

    public void init()

  Description copied from class: `ContainerBase`
  Init method, part of the MBean lifecycle. If the container was added via JMX, it'll register itself with the parent, using the ObjectName conventions to locate the parent. If the container was added directly and it doesn't have an ObjectName, it'll create a name and register itself with the JMX console. On destroy(), the object will unregister.

  Overrides:
    `init` in class `ContainerBase`

### destroy

    public void destroy()
                 throws LifecycleException

  Overrides:
    `destroy` in class `ContainerBase`
  Throws:
    `LifecycleException`

### start

    public void start()
               throws LifecycleException

  Start this Engine component.

  Specified by:
    `start` in interface `Lifecycle`
  Overrides:
    `start` in class `ContainerBase`
  Throws:
    `LifecycleException` - if a startup error occurs

### stop

    public void stop()
              throws LifecycleException

  Description copied from class: `ContainerBase`
  Gracefully shut down active use of the public methods of this Component.

  Specified by:
    `stop` in interface `Lifecycle`
  Overrides:
    `stop` in class `ContainerBase`
  Throws:
    `LifecycleException` - if this component detects a fatal error that needs to be reported

### toString

    public java.lang.String toString()

  Return a String representation of this component.

### preRegister

    public javax.management.ObjectName preRegister(javax.management.MBeanServer server,
                                                   javax.management.ObjectName name)
                                            throws java.lang.Exception

  Specified by:
    `preRegister` in interface `javax.management.MBeanRegistration`
  Overrides:
    `preRegister` in class `ContainerBase`
  Throws:
    `java.lang.Exception`

### getParentName

    public javax.management.ObjectName getParentName()
                                              throws javax.management.MalformedObjectNameException

  Overrides:
    `getParentName` in class `ContainerBase`
  Throws:
    `javax.management.MalformedObjectNameException`

### createObjectName

    public javax.management.ObjectName createObjectName(java.lang.String domain,
                                                        javax.management.ObjectName parent)
                                                 throws java.lang.Exception

  Overrides:
    `createObjectName` in class `ContainerBase`
  Throws:
    `java.lang.Exception`

### getDomain

    public java.lang.String getDomain()

  Overrides:
    `getDomain` in class `ContainerBase`

### setDomain

    public void setDomain(java.lang.String domain)

  Overrides:
    `setDomain` in class `ContainerBase`

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