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package org.apache.catalina;
/**
* An Engine is a Container that represents the entire Catalina servlet
* engine. It is useful in the following types of scenarios:
*
* - You wish to use Interceptors that see every single request processed
* by the entire engine.
*
- You wish to run Catalina in with a standalone HTTP connector, but still
* want support for multiple virtual hosts.
*
* In general, you would not use an Engine when deploying Catalina connected
* to a web server (such as Apache), because the Connector will have
* utilized the web server's facilities to determine which Context (or
* perhaps even which Wrapper) should be utilized to process this request.
*
* The child containers attached to an Engine are generally implementations
* of Host (representing a virtual host) or Context (representing individual
* an individual servlet context), depending upon the Engine implementation.
*
* If used, an Engine is always the top level Container in a Catalina
* hierarchy. Therefore, the implementation's setParent() method
* should throw IllegalArgumentException.
*
* @author Craig R. McClanahan
* @version $Revision: 1.2 $ $Date: 2005/12/08 01:27:16 $
*/
public interface Engine extends Container {
// ------------------------------------------------------------- Properties
/**
* Return the default hostname for this Engine.
*/
public String getDefaultHost();
/**
* Set the default hostname for this Engine.
*
* @param defaultHost The new default host
*/
public void setDefaultHost(String defaultHost);
/**
* Retrieve the JvmRouteId for this engine.
*/
public String getJvmRoute();
/**
* Set the JvmRouteId for this engine.
*
* @param jvmRouteId the (new) JVM Route ID. Each Engine within a cluster
* must have a unique JVM Route ID.
*/
public void setJvmRoute(String jvmRouteId);
/**
* Return the Service with which we are associated (if any).
*/
public Service getService();
/**
* Set the Service with which we are associated (if any).
*
* @param service The service that owns this Engine
*/
public void setService(Service service);
// --------------------------------------------------------- Public Methods
}