Package com.microstrategy.web.app.tasks

Class GetRWGraphImageTask

java.lang.Object

com.microstrategy.web.tasks.AbstractBaseTask

com.microstrategy.web.app.tasks.AbstractAppTask

com.microstrategy.web.app.tasks.WebComponentTask

com.microstrategy.web.app.tasks.BeanTask

com.microstrategy.web.app.tasks.GetRWGraphImageTask

All Implemented Interfaces:

Task

public class GetRWGraphImageTask
extends BeanTask

This Task retrieves the binary image data for a graph node in a Report Writing document.

Field Summary

Fields inherited from class com.microstrategy.web.app.tasks.WebComponentTask

FP_NAME_CONTENT_TYPE, initializationErrorMessage

Fields inherited from class com.microstrategy.web.tasks.AbstractBaseTask

compressOutput, CONTENT_TYPE_BINARY, CONTENT_TYPE_HTML, CONTENT_TYPE_JSON, CONTENT_TYPE_JSON_ALL, CONTENT_TYPE_JSON_D, CONTENT_TYPE_JSON_P, CONTENT_TYPE_XML, CONTENT_TYPE_XML_ANF, DEFAULT_MAX_WAIT, DEFAULT_POLLING_FREQ, execFlagsParam, INDEFINITE_MAX_WAIT, maxWaitParam, metadata, mPrivileges, msgIDParam, objectIDParam, OTHER_CONTENT_KEY_LAYOUTS, PARAM_NAME_EXEC_FLAGS, PARAM_NAME_MAX_WAIT, PARAM_NAME_OBJECT_ID, PARAM_NAME_POLLING_FREQ, PARAM_NAME_RESULT_FLAGS, PARAM_NAME_SESSION_ID, PARAM_NAME_SESSION_STATE, PARAM_NAME_STATE_ID, pollingFreqParam, PREFERENCE_DEFAULT_MAX_WAIT_IN_TASK, resultFlagsParam, sessionIDParam, sessionStateParam, stateIDParam

Constructor Summary

Constructors

Constructor	Description
GetRWGraphImageTask()

Method Summary

Modifier and Type	Method	Description
protected void	checkForRequiredParameters(RequestKeys requestKeys)	Checks whether all required parameters are present or not.
protected void	collectData(BeanTaskRequestContext btrContext)	This method calls the 'collectData' method on the WebBean instance.
protected WebGraph	getWebGraph(BeanTaskRequestContext btrContext)
protected void	handleEvent(BeanTaskRequestContext btrContext)	This method instructs the WebBean to handle the event.
protected void	registerParameterMetadata(TaskParameterMetadata parameterMetadata)	Registers a specific Task parameter metadata.
protected void	serializeResult(BeanTaskRequestContext btrContext, TaskOutput taskOutput)	This method attempts to serialize the results to the supplied TaskOutput object.

Methods inherited from class com.microstrategy.web.app.tasks.BeanTask

createWebBean

Methods inherited from class com.microstrategy.web.app.tasks.WebComponentTask

addTransform, createUntypedWebComponent, destroy, generatesContent, getBeanInfo, getStyleName, init, isSuccessfullyInitialized, newRequestContext, overrideActualParameters, prepareArgumentRequestKeys, prepareArgumentRequestKeys, prepareBean, prepareEventOrderRequestKeys, prepareEventOrderRequestKeys, prepareEventRequestKeys, prepareEventRequestKeys, prepareParameterRequestKeys, prepareRequestKeys, processRequest, registerTaskMetadata, requiresIServerSession, restoreBeanState, setBeanContext, setBeanInfo, setBeanName, setBeanProperties, setBeanSession, setSuccessfullyInitialized, setTaskID, transformBean

Methods inherited from class com.microstrategy.web.app.tasks.AbstractAppTask

getDescriptor

Methods inherited from class com.microstrategy.web.tasks.AbstractBaseTask

addExecFlagsParam, addJuilLayouts, addMaxWaitParam, addMaxWaitParam, addMessageIDParam, addObjectIDParam, addParameterMetadata, addParameterMetadata, addParameterMetadata, addPollingFrequencyParam, addPollingFrequencyParam, addResultFlagsParam, addSessionIDParam, addSessionStateParam, addStateIDParam, getCompressOutput, getID, getMetadata, getPrivileges, getSysDefaultPreferenceValue, processRequest, retrieveUploadedFile, setCompressOutput, setDescription, setID, setMetadata, setPrivileges, validateContentType

Methods inherited from class java.lang.Object

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

Constructor Detail

GetRWGraphImageTask

public GetRWGraphImageTask()

Method Detail

registerParameterMetadata

protected void registerParameterMetadata(TaskParameterMetadata parameterMetadata)

Description copied from class: WebComponentTask

Registers a specific Task parameter metadata. This method is called by WebComponentTask.registerTaskMetadata(TaskMetadata). It is helpful to override in a Task so that a specific TaskParameterMetadata may be saved for later use.

Overrides:

registerParameterMetadata in class WebComponentTask

Parameters:

parameterMetadata - The TaskParameterMetadata object being saved.

checkForRequiredParameters

protected void checkForRequiredParameters(RequestKeys requestKeys)
                                   throws TaskRequestMalformedException

Description copied from class: AbstractBaseTask

Checks whether all required parameters are present or not.

Overrides:

checkForRequiredParameters in class AbstractBaseTask

Parameters:

requestKeys - The RequestKeys object that contains all parameters.

Throws:

TaskRequestMalformedException - If some required parameters are missing.

handleEvent

protected void handleEvent(BeanTaskRequestContext btrContext)
                    throws TaskException

Description copied from class: WebComponentTask

This method instructs the WebBean to handle the event. It is called from WebComponentTask.processRequest(TaskRequestContext, TaskOutput).

Overrides:

handleEvent in class WebComponentTask

Parameters:

btrContext - The BeanTaskRequestContext that contains the WebBean instance.

Throws:

TaskException - If something fails in the process of handling the event.

TaskRequestMalformedException - If there was an exception raised while handling the event.

collectData

protected void collectData(BeanTaskRequestContext btrContext)
                    throws TaskException

Description copied from class: WebComponentTask

This method calls the 'collectData' method on the WebBean instance. This method is called by WebComponentTask.processRequest(TaskRequestContext, TaskOutput).

Overrides:

collectData in class WebComponentTask

Parameters:

btrContext - The BeanTaskRequestContext object.

Throws:

TaskException - If there is a failure while trying to collect data for the Web Bean.

serializeResult

protected void serializeResult(BeanTaskRequestContext btrContext,
                               TaskOutput taskOutput)
                        throws TaskException

Description copied from class: WebComponentTask

This method attempts to serialize the results to the supplied TaskOutput object. This method is called by WebComponentTask.processRequest(TaskRequestContext, TaskOutput) and in turn does the following:

1. Add the Transform. If there is no transform specified, an empty MarkupOutput is returned. (calls WebComponentTask.addTransform(BeanTaskRequestContext))
2. Override any actual parameters specified in the Bean Task XML. (calls WebComponentTask.overrideActualParameters(BeanTaskRequestContext, TransformInstance))
3. Transforms the WebBean using the Transform. (calls WebComponentTask.transformBean(BeanTaskRequestContext, TaskOutput))

Overrides:

serializeResult in class WebComponentTask

Parameters:

btrContext - The BeanTaskRequestContext object.

taskOutput - The TaskOutput object to populate.

Throws:

TaskException - If something fails along the way.

getWebGraph

protected WebGraph getWebGraph(BeanTaskRequestContext btrContext)
                        throws TaskException

Throws:

TaskException