Connector (Apache Tomcat 7.0.96 API Documentation)

org.apache.catalina.connector

## Class Connector

- java.lang.Object
- - org.apache.catalina.util.LifecycleBase
  - - org.apache.catalina.util.LifecycleMBeanBase
    - - org.apache.catalina.connector.Connector

- All Implemented Interfaces:
    javax.management.MBeanRegistration, Lifecycle

      public class Connector
      extends LifecycleMBeanBase

  Implementation of a Coyote connector.
  Author:
    Craig R. McClanahan, Remy Maucherat

- - ### Nested Class Summary

    - ### Nested classes/interfaces inherited from interface org.apache.catalina.Lifecycle

      `Lifecycle.SingleUse`

  - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected Adapter` | `adapter` Coyote adapter.
    `protected boolean` | `allowTrace` Do we allow TRACE ?
    `protected long` | `asyncTimeout` Default timeout for asynchronous requests (ms).
    `protected boolean` | `enableLookups` The "enable DNS lookups" flag for this Connector.
    `protected static java.lang.String` | `info` Descriptive information about this Connector implementation.
    `protected Mapper` | `mapper` Mapper.
    `protected MapperListener` | `mapperListener` Mapper listener.
    `protected int` | `maxParameterCount` The maximum number of parameters (GET plus POST) which will be automatically parsed by the container. 10000 by default.
    `protected int` | `maxPostSize` Maximum size of a POST which will be automatically parsed by the container. 2MB by default.
    `protected int` | `maxSavePostSize` Maximum size of a POST which will be saved by the container during authentication. 4kB by default
    `protected java.lang.String` | `parseBodyMethods` Comma-separated list of HTTP methods that will be parsed according to POST-style rules for application/x-www-form-urlencoded request bodies.
    `protected java.util.HashSet<java.lang.String>` | `parseBodyMethodsSet` A Set of methods determined by `parseBodyMethods`.
    `protected int` | `port` The port number on which we listen for requests.
    `protected ProtocolHandler` | `protocolHandler` Coyote protocol handler.
    `protected java.lang.String` | `protocolHandlerClassName` Coyote Protocol handler class name.
    `protected java.lang.String` | `proxyName` The server name to which we should pretend requests to this Connector were directed.
    `protected int` | `proxyPort` The server port to which we should pretend requests to this Connector were directed.
    `static boolean` | `RECYCLE_FACADES` Alternate flag to enable recycling of facades.
    `protected int` | `redirectPort` The redirect port for non-SSL to SSL redirects.
    `protected static java.util.HashMap<java.lang.String,java.lang.String>` | `replacements`
    `protected java.lang.String` | `scheme` The request scheme that will be set on all requests received through this connector.
    `protected boolean` | `secure` The secure connection flag that will be set on all requests received through this connector.
    `protected Service` | `service` The `Service` we are associated with (if any).
    `protected static StringManager` | `sm` The string manager for this package.
    `protected java.lang.String` | `URIEncoding` URI encoding.
    `protected boolean` | `useBodyEncodingForURI` URI encoding as body.
    `protected boolean` | `useIPVHosts` Flag to use IP-based virtual hosting.
    `protected boolean` | `xpoweredBy`

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

      `mserver`

    - ### Fields inherited from interface org.apache.catalina.Lifecycle

      `AFTER_DESTROY_EVENT, AFTER_INIT_EVENT, AFTER_START_EVENT, AFTER_STOP_EVENT, BEFORE_DESTROY_EVENT, BEFORE_INIT_EVENT, BEFORE_START_EVENT, BEFORE_STOP_EVENT, CONFIGURE_START_EVENT, CONFIGURE_STOP_EVENT, PERIODIC_EVENT, START_EVENT, STOP_EVENT`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `Connector()`
    `Connector(java.lang.String protocol)`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `protected java.lang.String` | `createObjectNameKeyProperties(java.lang.String type)`
    `Request` | `createRequest()` Create (or allocate) and return a Request object suitable for specifying the contents of a Request to the responsible Container.
    `Response` | `createResponse()` Create (or allocate) and return a Response object suitable for receiving the contents of a Response from the responsible Container.
    `protected void` | `destroyInternal()` Sub-classes wishing to perform additional clean-up should override this method, ensuring that super.destroyInternal() is the last call in the overriding method.
    `boolean` | `getAllowTrace()` True if the TRACE method is allowed.
    `long` | `getAsyncTimeout()` Return the default timeout for async requests in ms.
    `java.lang.Object` | `getAttribute(java.lang.String name)` Return a configured property.
    `protected java.lang.String` | `getDomainInternal()` Method implemented by sub-classes to identify the domain in which MBeans should be registered.
    `boolean` | `getEnableLookups()` Return the "enable DNS lookups" flag.
    `java.lang.String` | `getExecutorName()`
    `java.lang.String` | `getInfo()` Return descriptive information about this Connector implementation.
    `int` | `getLocalPort()` Return the port number on which this connector is listening to requests.
    `Mapper` | `getMapper()` Return the mapper.
    `int` | `getMaxHeaderCount()` Return the maximum number of headers that are allowed by the container.
    `int` | `getMaxParameterCount()` Return the maximum number of parameters (GET plus POST) that will be automatically parsed by the container.
    `int` | `getMaxPostSize()` Return the maximum size of a POST which will be automatically parsed by the container.
    `int` | `getMaxSavePostSize()` Return the maximum size of a POST which will be saved by the container during authentication.
    `protected java.lang.String` | `getObjectNameKeyProperties()` Allow sub-classes to specify the key properties component of the `ObjectName` that will be used to register this component.
    `java.lang.String` | `getParseBodyMethods()`
    `int` | `getPort()` Return the port number on which this connector is configured to listen for requests.
    `java.lang.Object` | `getProperty(java.lang.String name)` Return a configured property.
    `java.lang.String` | `getProtocol()` Return the Coyote protocol handler in use.
    `ProtocolHandler` | `getProtocolHandler()` Return the protocol handler associated with the connector.
    `java.lang.String` | `getProtocolHandlerClassName()` Return the class name of the Coyote protocol handler in use.
    `java.lang.String` | `getProxyName()` Return the proxy server name for this Connector.
    `int` | `getProxyPort()` Return the proxy server port for this Connector.
    `int` | `getRedirectPort()` Return the port number to which a request should be redirected if it comes in on a non-SSL port and is subject to a security constraint with a transport guarantee that requires SSL.
    `java.lang.String` | `getScheme()` Return the scheme that will be assigned to requests received through this connector.
    `boolean` | `getSecure()` Return the secure connection flag that will be assigned to requests received through this connector.
    `Service` | `getService()` Return the `Service` with which we are associated (if any).
    `java.lang.String` | `getURIEncoding()` Return the character encoding to be used for the URI.
    `boolean` | `getUseBodyEncodingForURI()` Return the true if the entity body encoding should be used for the URI.
    `boolean` | `getUseIPVHosts()` Test if IP-based virtual hosting is enabled.
    `boolean` | `getXpoweredBy()` Indicates whether the generation of an X-Powered-By response header for servlet-generated responses is enabled or disabled for this Connector.
    `protected void` | `initInternal()` Sub-classes wishing to perform additional initialization should override this method, ensuring that super.initInternal() is the first call in the overriding method.
    `protected boolean` | `isParseBodyMethod(java.lang.String method)`
    `void` | `pause()` Pause the connector.
    `void` | `resume()` Pause the connector.
    `void` | `setAllowTrace(boolean allowTrace)` Set the allowTrace flag, to disable or enable the TRACE HTTP method.
    `void` | `setAsyncTimeout(long asyncTimeout)` Set the default timeout for async requests.
    `void` | `setAttribute(java.lang.String name, java.lang.Object value)` Set a configured property.
    `void` | `setEnableLookups(boolean enableLookups)` Set the "enable DNS lookups" flag.
    `void` | `setMaxHeaderCount(int maxHeaderCount)` Set the maximum number of headers in a request that are allowed by the container.
    `void` | `setMaxParameterCount(int maxParameterCount)` Set the maximum number of parameters (GET plus POST) that will be automatically parsed by the container.
    `void` | `setMaxPostSize(int maxPostSize)` Set the maximum size of a POST which will be automatically parsed by the container.
    `void` | `setMaxSavePostSize(int maxSavePostSize)` Set the maximum size of a POST which will be saved by the container during authentication.
    `void` | `setParseBodyMethods(java.lang.String methods)`
    `void` | `setPort(int port)` Set the port number on which we listen for requests.
    `boolean` | `setProperty(java.lang.String name, java.lang.String value)` Set a configured property.
    `void` | `setProtocol(java.lang.String protocol)` Set the Coyote protocol which will be used by the connector.
    `void` | `setProtocolHandlerClassName(java.lang.String protocolHandlerClassName)` Set the class name of the Coyote protocol handler which will be used by the connector.
    `void` | `setProxyName(java.lang.String proxyName)` Set the proxy server name for this Connector.
    `void` | `setProxyPort(int proxyPort)` Set the proxy server port for this Connector.
    `void` | `setRedirectPort(int redirectPort)` Set the redirect port number.
    `void` | `setScheme(java.lang.String scheme)` Set the scheme that will be assigned to requests received through this connector.
    `void` | `setSecure(boolean secure)` Set the secure connection flag that will be assigned to requests received through this connector.
    `void` | `setService(Service service)` Set the `Service` with which we are associated (if any).
    `void` | `setURIEncoding(java.lang.String URIEncoding)` Set the URI encoding to be used for the URI.
    `void` | `setUseBodyEncodingForURI(boolean useBodyEncodingForURI)` Set if the entity body encoding should be used for the URI.
    `void` | `setUseIPVHosts(boolean useIPVHosts)` Enable the use of IP-based virtual hosting.
    `void` | `setXpoweredBy(boolean xpoweredBy)` Enables or disables the generation of an X-Powered-By header (with value Servlet/2.5) for all servlet-generated responses returned by this Connector.
    `protected void` | `startInternal()` Begin processing requests via this Connector.
    `protected void` | `stopInternal()` Terminate processing requests via this Connector.
    `java.lang.String` | `toString()` Provide a useful toString() implementation as it may be used when logging Lifecycle errors to identify the component.

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

      `getDomain, getObjectName, 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`

- - ### Field Detail

    - #### RECYCLE_FACADES

          public static final boolean RECYCLE_FACADES

      Alternate flag to enable recycling of facades.

    - #### service

          protected Service service

      The `Service` we are associated with (if any).

    - #### allowTrace

          protected boolean allowTrace

      Do we allow TRACE ?

    - #### asyncTimeout

          protected long asyncTimeout

      Default timeout for asynchronous requests (ms).

    - #### enableLookups

          protected boolean enableLookups

      The "enable DNS lookups" flag for this Connector.

    - #### xpoweredBy

          protected boolean xpoweredBy

    - #### info

          protected static final java.lang.String info

      Descriptive information about this Connector implementation.
      See Also:
        Constant Field Values

    - #### port

          protected int port

      The port number on which we listen for requests.

    - #### proxyName

          protected java.lang.String proxyName

      The server name to which we should pretend requests to this Connector were directed. This is useful when operating Tomcat behind a proxy server, so that redirects get constructed accurately. If not specified, the server name included in the `Host` header is used.

    - #### proxyPort

          protected int proxyPort

      The server port to which we should pretend requests to this Connector were directed. This is useful when operating Tomcat behind a proxy server, so that redirects get constructed accurately. If not specified, the port number specified by the `port` property is used.

    - #### redirectPort

          protected int redirectPort

      The redirect port for non-SSL to SSL redirects.

    - #### scheme

          protected java.lang.String scheme

      The request scheme that will be set on all requests received through this connector.

    - #### secure

          protected boolean secure

      The secure connection flag that will be set on all requests received through this connector.

    - #### sm

          protected static final StringManager sm

      The string manager for this package.

    - #### maxParameterCount

          protected int maxParameterCount

      The maximum number of parameters (GET plus POST) which will be automatically parsed by the container. 10000 by default. A value of less than 0 means no limit.

    - #### maxPostSize

          protected int maxPostSize

      Maximum size of a POST which will be automatically parsed by the container. 2MB by default.

    - #### maxSavePostSize

          protected int maxSavePostSize

      Maximum size of a POST which will be saved by the container during authentication. 4kB by default

    - #### parseBodyMethods

          protected java.lang.String parseBodyMethods

      Comma-separated list of HTTP methods that will be parsed according to POST-style rules for application/x-www-form-urlencoded request bodies.

    - #### parseBodyMethodsSet

          protected java.util.HashSet<java.lang.String> parseBodyMethodsSet

      A Set of methods determined by `parseBodyMethods`.

    - #### useIPVHosts

          protected boolean useIPVHosts

      Flag to use IP-based virtual hosting.

    - #### protocolHandlerClassName

          protected java.lang.String protocolHandlerClassName

      Coyote Protocol handler class name. Defaults to the Coyote HTTP/1.1 protocolHandler.

    - #### protocolHandler

          protected ProtocolHandler protocolHandler

      Coyote protocol handler.

    - #### adapter

          protected Adapter adapter

      Coyote adapter.

    - #### mapper

          protected Mapper mapper

      Mapper.

    - #### mapperListener

          protected MapperListener mapperListener

      Mapper listener.

    - #### URIEncoding

          protected java.lang.String URIEncoding

      URI encoding.

    - #### useBodyEncodingForURI

          protected boolean useBodyEncodingForURI

      URI encoding as body.

    - #### replacements

          protected static java.util.HashMap<java.lang.String,java.lang.String> replacements

  - ### Constructor Detail

    - #### Connector

          public Connector()

    - #### Connector

          public Connector(java.lang.String protocol)

  - ### Method Detail

    - #### getProperty

          public java.lang.Object getProperty(java.lang.String name)

      Return a configured property.

    - #### setProperty

          public boolean setProperty(java.lang.String name,
                            java.lang.String value)

      Set a configured property.

    - #### getAttribute

          public java.lang.Object getAttribute(java.lang.String name)

      Return a configured property.

    - #### setAttribute

          public void setAttribute(java.lang.String name,
                          java.lang.Object value)

      Set a configured property.

    - #### getService

          public Service getService()

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

    - #### setService

          public void setService(Service service)

      Set the `Service` with which we are associated (if any).
      Parameters:
        `service` - The service that owns this Engine

    - #### getAllowTrace

          public boolean getAllowTrace()

      True if the TRACE method is allowed. Default value is "false".

    - #### setAllowTrace

          public void setAllowTrace(boolean allowTrace)

      Set the allowTrace flag, to disable or enable the TRACE HTTP method.
      Parameters:
        `allowTrace` - The new allowTrace flag

    - #### getAsyncTimeout

          public long getAsyncTimeout()

      Return the default timeout for async requests in ms.

    - #### setAsyncTimeout

          public void setAsyncTimeout(long asyncTimeout)

      Set the default timeout for async requests.
      Parameters:
        `asyncTimeout` - The new timeout in ms.

    - #### getEnableLookups

          public boolean getEnableLookups()

      Return the "enable DNS lookups" flag.

    - #### setEnableLookups

          public void setEnableLookups(boolean enableLookups)

      Set the "enable DNS lookups" flag.
      Parameters:
        `enableLookups` - The new "enable DNS lookups" flag value

    - #### getInfo

          public java.lang.String getInfo()

      Return descriptive information about this Connector implementation.

    - #### getMapper

          public Mapper getMapper()

      Return the mapper.

    - #### getMaxHeaderCount

          public int getMaxHeaderCount()

      Return the maximum number of headers that are allowed by the container. A value of less than 0 means no limit.

    - #### setMaxHeaderCount

          public void setMaxHeaderCount(int maxHeaderCount)

      Set the maximum number of headers in a request that are allowed by the container. A value of less than 0 means no limit.
      Parameters:
        `maxHeaderCount` - The new setting

    - #### getMaxParameterCount

          public int getMaxParameterCount()

      Return the maximum number of parameters (GET plus POST) that will be automatically parsed by the container. A value of less than 0 means no limit.

    - #### setMaxParameterCount

          public void setMaxParameterCount(int maxParameterCount)

      Set the maximum number of parameters (GET plus POST) that will be automatically parsed by the container. A value of less than 0 means no limit.
      Parameters:
        `maxParameterCount` - The new setting

    - #### getMaxPostSize

          public int getMaxPostSize()

      Return the maximum size of a POST which will be automatically parsed by the container.

    - #### setMaxPostSize

          public void setMaxPostSize(int maxPostSize)

      Set the maximum size of a POST which will be automatically parsed by the container.
      Parameters:
        `maxPostSize` - The new maximum size in bytes of a POST which will be automatically parsed by the container

    - #### getMaxSavePostSize

          public int getMaxSavePostSize()

      Return the maximum size of a POST which will be saved by the container during authentication.

    - #### setMaxSavePostSize

          public void setMaxSavePostSize(int maxSavePostSize)

      Set the maximum size of a POST which will be saved by the container during authentication.
      Parameters:
        `maxSavePostSize` - The new maximum size in bytes of a POST which will be saved by the container during authentication.

    - #### getParseBodyMethods

          public java.lang.String getParseBodyMethods()

    - #### setParseBodyMethods

          public void setParseBodyMethods(java.lang.String methods)

    - #### isParseBodyMethod

          protected boolean isParseBodyMethod(java.lang.String method)

    - #### getPort

          public int getPort()

      Return the port number on which this connector is configured to listen for requests. The special value of 0 means select a random free port when the socket is bound.

    - #### setPort

          public void setPort(int port)

      Set the port number on which we listen for requests.
      Parameters:
        `port` - The new port number

    - #### getLocalPort

          public int getLocalPort()

      Return the port number on which this connector is listening to requests. If the special value for `port` of zero is used then this method will report the actual port bound.

    - #### getProtocol

          public java.lang.String getProtocol()

      Return the Coyote protocol handler in use.

    - #### setProtocol

          public void setProtocol(java.lang.String protocol)

      Set the Coyote protocol which will be used by the connector.
      Parameters:
        `protocol` - The Coyote protocol name

    - #### getProtocolHandlerClassName

          public java.lang.String getProtocolHandlerClassName()

      Return the class name of the Coyote protocol handler in use.

    - #### setProtocolHandlerClassName

          public void setProtocolHandlerClassName(java.lang.String protocolHandlerClassName)

      Set the class name of the Coyote protocol handler which will be used by the connector.
      Parameters:
        `protocolHandlerClassName` - The new class name

    - #### getProtocolHandler

          public ProtocolHandler getProtocolHandler()

      Return the protocol handler associated with the connector.

    - #### getProxyName

          public java.lang.String getProxyName()

      Return the proxy server name for this Connector.

    - #### setProxyName

          public void setProxyName(java.lang.String proxyName)

      Set the proxy server name for this Connector.
      Parameters:
        `proxyName` - The new proxy server name

    - #### getProxyPort

          public int getProxyPort()

      Return the proxy server port for this Connector.

    - #### setProxyPort

          public void setProxyPort(int proxyPort)

      Set the proxy server port for this Connector.
      Parameters:
        `proxyPort` - The new proxy server port

    - #### getRedirectPort

          public int getRedirectPort()

      Return the port number to which a request should be redirected if it comes in on a non-SSL port and is subject to a security constraint with a transport guarantee that requires SSL.

    - #### setRedirectPort

          public void setRedirectPort(int redirectPort)

      Set the redirect port number.
      Parameters:
        `redirectPort` - The redirect port number (non-SSL to SSL)

    - #### getScheme

          public java.lang.String getScheme()

      Return the scheme that will be assigned to requests received through this connector. Default value is "http".

    - #### setScheme

          public void setScheme(java.lang.String scheme)

      Set the scheme that will be assigned to requests received through this connector.
      Parameters:
        `scheme` - The new scheme

    - #### getSecure

          public boolean getSecure()

      Return the secure connection flag that will be assigned to requests received through this connector. Default value is "false".

    - #### setSecure

          public void setSecure(boolean secure)

      Set the secure connection flag that will be assigned to requests received through this connector.
      Parameters:
        `secure` - The new secure connection flag

    - #### getURIEncoding

          public java.lang.String getURIEncoding()

      Return the character encoding to be used for the URI.

    - #### setURIEncoding

          public void setURIEncoding(java.lang.String URIEncoding)

      Set the URI encoding to be used for the URI.
      Parameters:
        `URIEncoding` - The new URI character encoding.

    - #### getUseBodyEncodingForURI

          public boolean getUseBodyEncodingForURI()

      Return the true if the entity body encoding should be used for the URI.

    - #### setUseBodyEncodingForURI

          public void setUseBodyEncodingForURI(boolean useBodyEncodingForURI)

      Set if the entity body encoding should be used for the URI.
      Parameters:
        `useBodyEncodingForURI` - The new value for the flag.

    - #### getXpoweredBy

          public boolean getXpoweredBy()

      Indicates whether the generation of an X-Powered-By response header for servlet-generated responses is enabled or disabled for this Connector.
      Returns:
        true if generation of X-Powered-By response header is enabled, false otherwise

    - #### setXpoweredBy

          public void setXpoweredBy(boolean xpoweredBy)

      Enables or disables the generation of an X-Powered-By header (with value Servlet/2.5) for all servlet-generated responses returned by this Connector.
      Parameters:
        `xpoweredBy` - true if generation of X-Powered-By response header is to be enabled, false otherwise

    - #### setUseIPVHosts

          public void setUseIPVHosts(boolean useIPVHosts)

      Enable the use of IP-based virtual hosting.
      Parameters:
        `useIPVHosts` - `true` if Hosts are identified by IP, `false/code> if Hosts are identified by name.`

    - #### getUseIPVHosts

          public boolean getUseIPVHosts()

      Test if IP-based virtual hosting is enabled.

    - #### getExecutorName

          public java.lang.String getExecutorName()

    - #### createRequest

          public Request createRequest()

      Create (or allocate) and return a Request object suitable for specifying the contents of a Request to the responsible Container.

    - #### createResponse

          public Response createResponse()

      Create (or allocate) and return a Response object suitable for receiving the contents of a Response from the responsible Container.

    - #### createObjectNameKeyProperties

          protected java.lang.String createObjectNameKeyProperties(java.lang.String type)

    - #### pause

          public void pause()

      Pause the connector.

    - #### resume

          public void resume()

      Pause the connector.

    - #### initInternal

          protected void initInternal()
                               throws LifecycleException

      Description copied from class: `LifecycleMBeanBase`
      Sub-classes wishing to perform additional initialization should override this method, ensuring that super.initInternal() is the first call in the overriding method.
      Overrides:
        `initInternal` in class `LifecycleMBeanBase`
      Throws:
        `LifecycleException`

    - #### startInternal

          protected void startInternal()
                                throws LifecycleException

      Begin processing requests via this Connector.
      Specified by:
        `startInternal` in class `LifecycleBase`
      Throws:
        `LifecycleException` - if a fatal startup error occurs

    - #### stopInternal

          protected void stopInternal()
                               throws LifecycleException

      Terminate processing requests via this Connector.
      Specified by:
        `stopInternal` in class `LifecycleBase`
      Throws:
        `LifecycleException` - if a fatal shutdown error occurs

    - #### destroyInternal

          protected void destroyInternal()
                                  throws LifecycleException

      Description copied from class: `LifecycleMBeanBase`
      Sub-classes wishing to perform additional clean-up should override this method, ensuring that super.destroyInternal() is the last call in the overriding method.
      Overrides:
        `destroyInternal` in class `LifecycleMBeanBase`
      Throws:
        `LifecycleException`

    - #### toString

          public java.lang.String toString()

      Provide a useful toString() implementation as it may be used when logging Lifecycle errors to identify the component.
      Overrides:
        `toString` in class `java.lang.Object`

    - #### getDomainInternal

          protected java.lang.String getDomainInternal()

      Description copied from class: `LifecycleMBeanBase`
      Method implemented by sub-classes to identify the domain in which MBeans should be registered.
      Specified by:
        `getDomainInternal` in class `LifecycleMBeanBase`
      Returns:
        The name of the domain to use to register MBeans.

    - #### getObjectNameKeyProperties

          protected java.lang.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`

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