SmartFrog 3.10.000

org.smartfrog.sfcore.workflow.combinators
Class RandomSequence

java.lang.Object
  extended by org.smartfrog.sfcore.reference.RemoteReferenceResolverHelperImpl
      extended by org.smartfrog.sfcore.prim.PrimImpl
          extended by org.smartfrog.sfcore.compound.CompoundImpl
              extended by org.smartfrog.sfcore.workflow.eventbus.EventCompoundImpl
                  extended by org.smartfrog.sfcore.workflow.combinators.RandomSequence
All Implemented Interfaces:
java.rmi.Remote, MessageKeys, Compound, ChildMinder, Diagnostics, Liveness, Prim, RemoteReferenceResolver, RemoteReferenceResolverHelper, EventBus, EventRegistration, EventSink

public class RandomSequence
extends EventCompoundImpl
implements Compound

RandomSequence is a modified sequence which differs in that the sub-components operate sequentially but are started at random. RandomSequence maintains a vector of the started sub-components. A sub-component can not be deployed and started twice. Sub-components do not share the same lifecycle. A RandomSequence combinator creates no sub-components until its sfStart phase at which point the first mentioned random sub-components is created in the normal way. The RandomSequence combinator waits for each of its sub-components to terminate at which point it starts a randomly chosen one in the action. When the last terminates normally it too terminates normally. If an error occurs at any point, or a sub-component terminates abnormally, the RandomSequence combinator does too.

The file randomsequence.sf contains the SmartFrog configuration file for the base Random,Sequence combinator. This file contains the details of the attributes which may be passed to Sequence.


Field Summary
 
Fields inherited from class org.smartfrog.sfcore.workflow.eventbus.EventCompoundImpl
action, actionKeys, actions, name
 
Fields inherited from class org.smartfrog.sfcore.compound.CompoundImpl
childCap, childInc, lifecycleChildren, sfChildren, sfSyncTerminate
 
Fields inherited from class org.smartfrog.sfcore.prim.PrimImpl
refLivenessDelay, refLivenessFactor, sfCompleteName, sfContext, sfDeployHooks, sfDeployWithHooks, sfExportRef, sfIsDeployed, sfIsStarted, sfIsTerminated, sfIsTerminating, sfLivenessCount, sfLivenessDelay, sfLivenessFactor, sfLivenessSender, sfParent, sfStartHooks, sfTerminateWithHooks, termLock
 
Fields inherited from interface org.smartfrog.sfcore.common.MessageKeys
CANNOT_LINK_TO_PREDICATE, COMPONENT_TERMINATED, COPY_FAILED, COPY_SERIALIZE_FAILED, ERROR_NO_SECURITY_BUT_REQUIRED, ILLEGAL_BOOLEAN_PARAMETER, ILLEGAL_NUMERIC_PARAMETER, ILLEGAL_STRING_PARAMETER, ILLEGAL_VECTOR_PARAMETER, LIVENESS_SEND_FAILURE, LIVENESS_SEND_FAILURE_IN, MISSING_PARAMETER, MSG_CLASS_NOT_FOUND, MSG_CONNECT_ERR, MSG_CONT_OTHER_DEPLOY, MSG_DEPLOY_COMP_TERMINATED, MSG_DEPLOY_SUCCESS, MSG_DEPLOYWITH_PHASE_FAILED, MSG_DETACH_SUCCESS, MSG_DETACH_TERMINATE_SUCCESS, MSG_ERR_DEPLOY_FROM_URL, MSG_ERR_PARSE, MSG_ERR_RESOLVE_PHASE, MSG_ERR_SF_RUNNING, MSG_ERR_TERM, MSG_FAILED_INET_ADDRESS_LOOKUP, MSG_FAILED_TO_CONTACT_PARENT, MSG_FILE_NOT_FOUND, MSG_HOOK_ACTION_FAILED, MSG_ILLEGAL_ACCESS, MSG_ILLEGAL_CLASS_TYPE, MSG_ILLEGAL_CLASS_TYPE_EXPECTING_GOT, MSG_ILLEGAL_REFERENCE, MSG_INPUTSTREAM_NULL, MSG_INSTANTIATION_ERROR, MSG_INVALID_OBJECT_TYPE, MSG_INVOCATION_TARGET, MSG_LANG_NOT_FOUND, MSG_LIVENESS_START_FAILED, MSG_LOADING_URL, MSG_METHOD_NOT_FOUND, MSG_NON_REP_ATTRIB, MSG_NOT_COMPONENT_REFERENCE, MSG_NOT_FOUND_ATTRIBUTE, MSG_NOT_FOUND_REFERENCE, MSG_NOT_VALUE_REFERENCE, MSG_NULL_DEF_METHOD, MSG_NULL_URL, MSG_OBJECT_REGISTRATION_FAILED, MSG_PARENT_LOCATION_FAILED, MSG_PING_SUCCESS, MSG_RANDM_ERR, MSG_REMOTE_CONNECT_ERR, MSG_REPEATED_ATTRIBUTE, MSG_SF_DEAD, MSG_SF_READY, MSG_SF_TERMINATED, MSG_STACKTRACE_FOLLOWS, MSG_START_COMP_TERMINATED, MSG_TERMINATE_SUCCESS, MSG_UNHANDLED_EXCEPTION, MSG_UNKNOWN_HOST, MSG_UNRESOLVED_REFERENCE, MSG_UNRESOLVED_REFERENCE_IN, MSG_UPDATE_SUCCESS, MSG_URL_NOT_FOUND, MSG_URL_TO_PARSE_NOT_FOUND, MSG_WARNING_LIVENESS_ENABLED, MSG_WARNING_STACKTRACE_DISABLED, MSG_WARNING_STACKTRACE_ENABLED, ROOT_MUST_BE_COMPONENT, WARN_NO_SECURITY
 
Constructor Summary
RandomSequence()
          Constructs RandomSequence.
 
Method Summary
 void sfDeploy()
          Reads the basic configuration of the component and deploys.
 void sfStart()
          Starts and manages the random subcomponents.
 void sfTerminatedWith(TerminationRecord status, Prim comp)
          Terminates the component.
 
Methods inherited from class org.smartfrog.sfcore.workflow.eventbus.EventCompoundImpl
deregister, event, handleEvent, register, sendEvent, sfDeployWithChildren, sfTerminateWith
 
Methods inherited from class org.smartfrog.sfcore.compound.CompoundImpl
sfAddChild, sfASyncTerminateWith, sfChildren, sfContainsChild, sfCreateNewApp, sfCreateNewChild, sfCreateNewChild, sfDeployChildren, sfDeployComponentDescription, sfDeployWith, sfDumpState, sfParentageChanged, sfPing, sfPingChild, sfRemoveAttribute, sfRemoveChild, sfStartChildren, sfSyncTerminateWith
 
Methods inherited from class org.smartfrog.sfcore.prim.PrimImpl
equals, hashCode, registerWithProcessCompound, sfAddAttribute, sfAttributeKeyFor, sfAttributes, sfCompleteName, sfCompleteNameSafe, sfContainsAttribute, sfContainsValue, sfContext, sfDeployedHost, sfDeployedProcessName, sfDetach, sfDetachAndTerminate, sfDiagnosticsReport, sfExport, sfExportRef, sfExportRef, sfGetApplicationLog, sfGetCoreLog, sfGetLog, sfIsDeployed, sfIsRemote, sfIsStarted, sfIsTerminated, sfIsTerminating, sfLivenessFailure, sfLog, sfParent, sfReplaceAttribute, sfResolve, sfResolve, sfResolveHere, sfResolveHere, sfResolveParent, sfSetLog, sfStartLivenessSender, sfStopLivenessSender, sfTerminate, sfTerminateQuietlyWith, sfValues, terminateComponent, terminateNotifying, toString
 
Methods inherited from class org.smartfrog.sfcore.reference.RemoteReferenceResolverHelperImpl
sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolveWithParser
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface org.smartfrog.sfcore.compound.Compound
sfCreateNewApp, sfCreateNewChild, sfCreateNewChild, sfDeployComponentDescription
 
Methods inherited from interface org.smartfrog.sfcore.prim.Prim
sfAddAttribute, sfAttributeKeyFor, sfAttributes, sfCompleteName, sfContainsAttribute, sfContainsValue, sfContext, sfDeployedHost, sfDeployedProcessName, sfDeployWith, sfDetach, sfDetachAndTerminate, sfDumpState, sfIsDeployed, sfIsStarted, sfIsTerminated, sfIsTerminating, sfParent, sfParentageChanged, sfRemoveAttribute, sfReplaceAttribute, sfTerminate, sfTerminateQuietlyWith, sfValues
 
Methods inherited from interface org.smartfrog.sfcore.prim.Liveness
sfPing
 
Methods inherited from interface org.smartfrog.sfcore.reference.RemoteReferenceResolver
sfResolve, sfResolve, sfResolveHere, sfResolveHere, sfResolveParent
 
Methods inherited from interface org.smartfrog.sfcore.reference.RemoteReferenceResolverHelper
sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolve, sfResolveWithParser
 
Methods inherited from interface org.smartfrog.sfcore.prim.Diagnostics
sfDiagnosticsReport
 
Methods inherited from interface org.smartfrog.sfcore.prim.ChildMinder
sfAddChild, sfChildren, sfContainsChild, sfRemoveChild
 

Constructor Detail

RandomSequence

public RandomSequence()
               throws java.rmi.RemoteException
Constructs RandomSequence.

Throws:
java.rmi.RemoteException - In case of RMI or network error.
Method Detail

sfDeploy

public void sfDeploy()
              throws SmartFrogException,
                     java.rmi.RemoteException
Reads the basic configuration of the component and deploys.

Specified by:
sfDeploy in interface Prim
Overrides:
sfDeploy in class EventCompoundImpl
Throws:
java.rmi.RemoteException - In case of network/rmi error
SmartFrogException - In case of any error while deploying the component

sfStart

public void sfStart()
             throws SmartFrogException,
                    java.rmi.RemoteException
Starts and manages the random subcomponents.

Specified by:
sfStart in interface Prim
Overrides:
sfStart in class CompoundImpl
Throws:
java.rmi.RemoteException - In case of network/rmi error
SmartFrogLifecycleException - In case of any error while starting the component
SmartFrogException - failed to start compound

sfTerminatedWith

public void sfTerminatedWith(TerminationRecord status,
                             Prim comp)
Terminates the component. It is invoked by sub-components on termination. If normal termination, RandomSequence behaviour is to start a random component in the actions if it is the last - terminate normally. if an erroneous termination - terminate immediately passing on the error

Specified by:
sfTerminatedWith in interface Prim
Overrides:
sfTerminatedWith in class CompoundImpl
Parameters:
status - termination status of sender
comp - sender of termination

SmartFrog CORE 3.10.000

(C) Copyright 1998-2006 Hewlett-Packard Development Company, LP