com.whitestein.lsps.engine.lang

Class ExecutionContextImpl

java.lang.Object

com.whitestein.lsps.engine.lang.AbstractExecutionContext

com.whitestein.lsps.engine.lang.ExecutionContextImpl

All Implemented Interfaces:

HandleResolver, ExecutionContext, TraceableExecution

Direct Known Subclasses:

TaskContextImpl

public class ExecutionContextImpl
extends AbstractExecutionContext

Simple implementation of ExecutionContext.

Author:

rba, bhl

Constructor Summary

Constructors

Constructor and Description
ExecutionContextImpl(Context context, ModelProviderClientService modelProviderService) Creates new instance of ExecutionContextImpl.
ExecutionContextImpl(ModelProviderClientService modelProviderService, ModelInstance modelInstance, Namespace namespace) Creates new instance of ExecutionContextImpl.

Method Summary

Modifier and Type	Method and Description
void	addExecutionTrace(ExecutionTrace et) Adds ExecutionTrace to the context.
void	addExecutionTraceElement(ExecutionTraceElement ete) Adds ExecutionTraceElement to the context.
void	addSignal(Object signal) Adds a signal to the signal queue.
static Namespace	createNamespace(ModelProviderClientService modelProviderService, Context context) Creates namespace of correct type for a context.
protected Object	executeJavaOperation(String className, String methodName, Class<?>[] argClasses, List<Object> evaluatedArgs, InterpreterStackTrace stackTrace)
void	flushAll() Flush of all sessions (core, org, human,...
void	flushPlugins() Flush of sessions for all plugins (core, human, org,...)
CompiledContext	getCompiled()
CompiledContext	getCompiled(String moduleName)
ComponentService	getComponentService() Returns component service
long	getContextId() Returns the context id.
String	getEvaluationLevel() Returns evaluation level.
ExecutionTrace	getExecutionTrace()
Handle	getHandle(ValueHolder valueHolder) Returns a serializable handle for the given value-holder.
com.whitestein.lsps.model.ContextModelElement	getModelElement() Returns the corresponding context model element.
ModelInstance	getModelInstance() Returns the model instance.
ModelProviderClientService	getModelProviderService() Returns the provided model provider service.
Namespace	getNamespace() Returns namespace associated with this context.
protected NamespaceModel	getNamespaceModel() Returns namespace model for this context.
ExecutionContext	getParentContext() Returns the parent execution context or null if it does not exist.
String	getPath() Returns the full path to this context as a string.
QID	getPathQID() Returns the full path to this context as a QID.
ProcessInstance	getProcessInstance() Returns the process instance.
com.whitestein.lsps.model.ProcessModel	getProcessModel() Returns the process model.
ValueHolder	getValueHolder(Handle handle) Returns a value-holder for the given handle.
static ExecutionContextImpl	modelContext(Module model, ModelInstanceType modelInstanceType, ModelProviderClientService modelProviderService) Returns an execution context for the given model.
void	persist(ValueHolder object) When getting ValueHolders from the context, they may be later garbage collected.
void	setCompiled(CompiledContext compiledContext)

Methods inherited from class com.whitestein.lsps.engine.lang.AbstractExecutionContext

getStackTrace, getStackTraceInfo, getVariableValue, getVariableValue, resolveVariableNamespace, resolveVariableNamespace, setVariableValue, setVariableValue, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ExecutionContextImpl

public ExecutionContextImpl(ModelProviderClientService modelProviderService,
                            ModelInstance modelInstance,
                            Namespace namespace)

Creates new instance of ExecutionContextImpl.

Parameters:

modelProviderService -

modelInstance -

namespace -

ExecutionContextImpl

public ExecutionContextImpl(Context context,
                            ModelProviderClientService modelProviderService)

Creates new instance of ExecutionContextImpl.

Parameters:

context -

modelProviderService -

Throws:

NullPointerException - if context or modelProviderService is null

Method Detail

createNamespace

public static Namespace createNamespace(ModelProviderClientService modelProviderService,
                                        Context context)

Creates namespace of correct type for a context.

Parameters:

modelProviderService -

context -

Returns:

namespace for a context

modelContext

public static ExecutionContextImpl modelContext(Module model,
                                                ModelInstanceType modelInstanceType,
                                                ModelProviderClientService modelProviderService)

Returns an execution context for the given model.

Parameters:

model -

modelInstanceType -

modelProviderService -

Returns:

an execution context for the given model

getNamespace

public Namespace getNamespace()

Description copied from interface: ExecutionContext

Returns namespace associated with this context.

Returns:

namespace associated with this context

getModelProviderService

public ModelProviderClientService getModelProviderService()

Returns the provided model provider service.

Returns:

the provided model provider service

getNamespaceModel

protected NamespaceModel getNamespaceModel()

Description copied from class: AbstractExecutionContext

Returns namespace model for this context.

Specified by:

getNamespaceModel in class AbstractExecutionContext

Returns:

namespace model for this context

addSignal

public void addSignal(Object signal)

Description copied from interface: ExecutionContext

Adds a signal to the signal queue.

getProcessModel

public com.whitestein.lsps.model.ProcessModel getProcessModel()

Description copied from interface: ExecutionContext

Returns the process model.

Returns:

the process model

getModelInstance

public ModelInstance getModelInstance()

Description copied from interface: ExecutionContext

Returns the model instance.

Returns:

the model instance

getProcessInstance

public ProcessInstance getProcessInstance()

Description copied from interface: ExecutionContext

Returns the process instance.

Returns:

the process instance

getContextId

public long getContextId()

Description copied from interface: ExecutionContext

Returns the context id. The context id is unique for all running processes.

Returns:

the context id

getEvaluationLevel

public String getEvaluationLevel()

Returns evaluation level.

Returns:

evaluation level

getModelElement

public com.whitestein.lsps.model.ContextModelElement getModelElement()

Description copied from interface: ExecutionContext

Returns the corresponding context model element.

Returns:

the corresponding context model element

getParentContext

public ExecutionContext getParentContext()

Description copied from interface: ExecutionContext

Returns the parent execution context or null if it does not exist.

Returns:

the parent execution context or null if it does not exist

persist

public void persist(ValueHolder object)

Description copied from interface: ExecutionContext

When getting ValueHolders from the context, they may be later garbage collected. This method ensures that the object will never be garbage collected.

Parameters:

object - object to make persistent

getHandle

public Handle getHandle(ValueHolder valueHolder)

Description copied from interface: HandleResolver

Returns a serializable handle for the given value-holder. The holder can be obtained back using HandleResolver.getValueHolder(Handle).

Parameters:

valueHolder - the value-holder

Returns:

the handle

getValueHolder

public ValueHolder getValueHolder(Handle handle)

Description copied from interface: HandleResolver

Returns a value-holder for the given handle.

Parameters:

handle - the handle

Returns:

the value-holder

getPathQID

public QID getPathQID()

Description copied from interface: ExecutionContext

Returns the full path to this context as a QID.

Returns:

the full path to this context as a QID

getPath

public String getPath()

Description copied from interface: ExecutionContext

Returns the full path to this context as a string.

Returns:

the full path to this context as a string

executeJavaOperation

protected Object executeJavaOperation(String className,
                                      String methodName,
                                      Class<?>[] argClasses,
                                      List<Object> evaluatedArgs,
                                      InterpreterStackTrace stackTrace)
                               throws ErrorException

Throws:

ErrorException

flushAll

public void flushAll()

Flush of all sessions (core, org, human,... and sessions for all shared records).

addExecutionTraceElement

public void addExecutionTraceElement(ExecutionTraceElement ete)

Description copied from interface: TraceableExecution

Adds ExecutionTraceElement to the context. See ExecutionTrace and ExecutionTraceElement.

Parameters:

ete - ExecutionTraceElement to be added.

addExecutionTrace

public void addExecutionTrace(ExecutionTrace et)

Description copied from interface: TraceableExecution

Adds ExecutionTrace to the context. See ExecutionTrace and ExecutionTraceElement.

Parameters:

et - ExecutionTrace to be added.

getExecutionTrace

public ExecutionTrace getExecutionTrace()

Returns:

Returns ExecutionTrace. See ExecutionTrace and ExecutionTraceElement.

getComponentService

public ComponentService getComponentService()

Description copied from interface: ExecutionContext

Returns component service

Returns:

component service

flushPlugins

public void flushPlugins()

Flush of sessions for all plugins (core, human, org,...)

getCompiled

public CompiledContext getCompiled()

setCompiled

public void setCompiled(CompiledContext compiledContext)

getCompiled

public CompiledContext getCompiled(String moduleName)