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## org.eclipse.birt.report.engine.api
Interface IEngineTask

All Known Subinterfaces:
  IDataExtractionTask, IGetParameterDefinitionTask, IRenderTask, IRunAndRenderTask, IRunTask

    public interface IEngineTask

defines common features for an engine task. A task captures a set of operations that engine performs to get a unit of work done.

Field Summary
`static int` | `CANCEL_ON_ERROR` cancel the task execution if there is an error.
`static int` | `CONTINUE_ON_ERROR` continue the task execution if there is an error.
`static int` | `STATUS_CANCELLED` the task is finished by cancled
`static int` | `STATUS_FAILED` the task is finished with errors
`static int` | `STATUS_NOT_STARTED` the task is not running yet
`static int` | `STATUS_RUNNING` the task is running
`static int` | `STATUS_SUCCEEDED` the task is finished with sucessful
`static int` | `TASK_DATAEXTRACTION`
`static int` | `TASK_GETPARAMETERDEFINITION`
`static int` | `TASK_RENDER`
`static int` | `TASK_RUN`
`static int` | `TASK_RUNANDRENDER`
`static int` | `TASK_UNKNOWN`

Method Summary
`void` | `addScriptableJavaObject(java.lang.String jsName, java.lang.Object obj)` Deprecated. user should add it to appContext.
`void` | `cancel()` set the cancel flag if the task is running.
`void` | `cancel(java.lang.Object signal)` Deprecated. user should use cancel() instead.
`void` | `close()` close the task, relese any resources.
`java.util.Map` | `getAppContext()` returns the context objects for the task.
`boolean` | `getCancelFlag()` return a flag if the user called cancel.
`IReportEngine` | `getEngine()` returns the report engine object
`java.util.List` | `getErrors()` Gets all exceptions that are thrown out during executing this task.
`int` | `getID()` returns an identifier for the task.
`java.util.Locale` | `getLocale()` returns the locale for running the task
`java.util.logging.Logger` | `getLogger()` return the logger used by the task.
`java.lang.String` | `getParameterDisplayText(java.lang.String name)` Gets parameter display text by parameter name.
`java.lang.Object` | `getParameterValue(java.lang.String name)` returns the value of a parameter.
`java.util.HashMap` | `getParameterValues()` returns the parameter name/value collection
`IReportRunnable` | `getReportRunnable()` returns the runnable report design object
`int` | `getStatus()` get the status of task
`int` | `getTaskType()` Gets the type of the engine.
`com.ibm.icu.util.ULocale` | `getULocale()` returns the locale for running the task
`void` | `setAppContext(java.util.Map context)` sets the task context.
`void` | `setDataSource(IDocArchiveReader dataSource)` set the data source used by the engine task.
`void` | `setDataSource(IDocArchiveReader dataSource, java.lang.String reportlet)` set the data source used by the engine task.
`void` | `setErrorHandlingOption(int option)` set the error handling mode for the first error.
`void` | `setLocale(java.util.Locale locale)` sets the task locale
`void` | `setLocale(com.ibm.icu.util.ULocale locale)` sets the task locale
`void` | `setLogger(java.util.logging.Logger logger)` set the logger used by the task.
`void` | `setParameter(java.lang.String name, java.lang.Object value, java.lang.String displayText)` Sets parameter value and display text.
`void` | `setParameterDisplayText(java.lang.String name, java.lang.String displayText)` Sets display text of a parameter with specified name.
`void` | `setParameterValue(java.lang.String name, java.lang.Object value)` sets one parameter value
`void` | `setParameterValues(java.util.Map params)` set all parameter valuess
`void` | `setTimeZone(com.ibm.icu.util.TimeZone timeZone)` Set the time zone information for the task.
`void` | `setUserACL(java.lang.String[] acl)` set user's ACL.
`boolean` | `validateParameters()`

Field Detail

### TASK_UNKNOWN

    static final int TASK_UNKNOWN

See Also:
  Constant Field Values

### TASK_GETPARAMETERDEFINITION

    static final int TASK_GETPARAMETERDEFINITION

See Also:
  Constant Field Values

### TASK_RUN

    static final int TASK_RUN

See Also:
  Constant Field Values

### TASK_RENDER

    static final int TASK_RENDER

See Also:
  Constant Field Values

### TASK_RUNANDRENDER

    static final int TASK_RUNANDRENDER

See Also:
  Constant Field Values

### TASK_DATAEXTRACTION

    static final int TASK_DATAEXTRACTION

See Also:
  Constant Field Values

### STATUS_NOT_STARTED

    static final int STATUS_NOT_STARTED

  the task is not running yet

  See Also:
    Constant Field Values

### STATUS_RUNNING

    static final int STATUS_RUNNING

  the task is running

  See Also:
    Constant Field Values

### STATUS_SUCCEEDED

    static final int STATUS_SUCCEEDED

  the task is finished with sucessful

  See Also:
    Constant Field Values

### STATUS_FAILED

    static final int STATUS_FAILED

  the task is finished with errors

  See Also:
    Constant Field Values

### STATUS_CANCELLED

    static final int STATUS_CANCELLED

  the task is finished by cancled

  See Also:
    Constant Field Values

### CONTINUE_ON_ERROR

    static final int CONTINUE_ON_ERROR

  continue the task execution if there is an error.

  See Also:
    Constant Field Values

### CANCEL_ON_ERROR

    static final int CANCEL_ON_ERROR

  cancel the task execution if there is an error.

  See Also:
    Constant Field Values

Method Detail

### setLocale

    void setLocale(java.util.Locale locale)

  sets the task locale

  Parameters:
    `locale` - the task locale

### setLocale

    void setLocale(com.ibm.icu.util.ULocale locale)

  sets the task locale

  Parameters:
    `locale` - the task locale

### setTimeZone

    void setTimeZone(com.ibm.icu.util.TimeZone timeZone)

  Set the time zone information for the task.

  Only following tasks have the meaningful implementations:

  - RunAndRenderTask
  - RenderTask
  - GetParameterDefinitionTask

  Parameters:
    `timeZone` - the time zone information for the task

### setAppContext

    void setAppContext(java.util.Map context)

  sets the task context. this method must be called before the run/render/execute etc.

  Parameters:
    `context` - - task contexts in a map. The map contains name-value pairs

### getLocale

    java.util.Locale getLocale()

  returns the locale for running the task

  Returns:
    the locale for running the task

### getULocale

    com.ibm.icu.util.ULocale getULocale()

  returns the locale for running the task

  Returns:
    the locale for running the task

### getAppContext

    java.util.Map getAppContext()

  returns the context objects for the task. The return appContext is read only, the user should never try to modify the value.

  Returns:
    the task contexts

### getEngine

    IReportEngine getEngine()

  returns the report engine object

  Returns:
    the engine object

### addScriptableJavaObject

    void addScriptableJavaObject(java.lang.String jsName,
                                 java.lang.Object obj)

  Deprecated. user should add it to appContext.

  defines an additional Java object that is exposed to BIRT scripting at a per-task level

  Parameters:
    `jsName` - the name that the object is referenced in JavaScript
    `obj` - the Java object that is wrapped and scripted

### getID

    int getID()

  returns an identifier for the task. The identifier can be used to identify the task, especially when writing logs in a multi-threaded environment.

  Returns:
    an identifier for the task.

### getReportRunnable

    IReportRunnable getReportRunnable()

  returns the runnable report design object

  Returns:
    the runnable report design object

### setParameterValues

    void setParameterValues(java.util.Map params)

  set all parameter valuess

  Parameters:
    `params` - a hash map with all parameters

### setParameterValue

    void setParameterValue(java.lang.String name,
                           java.lang.Object value)

  sets one parameter value

  Parameters:
    `name` - parameter name
    `value` - parameter value

### getParameterValues

    java.util.HashMap getParameterValues()

  returns the parameter name/value collection

  Returns:
    the parameter names/values in a hash map

### getParameterValue

    java.lang.Object getParameterValue(java.lang.String name)

  returns the value of a parameter.

  Returns:
    the parameter value.

### validateParameters

    boolean validateParameters()

  Returns:
    whether the parameter validation succeeds

### setParameter

    void setParameter(java.lang.String name,
                      java.lang.Object value,
                      java.lang.String displayText)

  Sets parameter value and display text.

  Parameters:
    `name` - parameter name.
    `value` - value.
    `displayText` - display text.

### getParameterDisplayText

    java.lang.String getParameterDisplayText(java.lang.String name)

  Gets parameter display text by parameter name.

  Parameters:
    `name` - parameter name.
  Returns:
    display text.

### setParameterDisplayText

    void setParameterDisplayText(java.lang.String name,
                                 java.lang.String displayText)

  Sets display text of a parameter with specified name.

  Parameters:
    `name` - name of the parameter.
    `displayText` - display text to set.

### cancel

    void cancel()

  set the cancel flag if the task is running. the task can re-run if it is cancedl.

### cancel

    void cancel(java.lang.Object signal)

  Deprecated. user should use cancel() instead.

  cancels the task with a signal. you can't call this method in the same thread with runTask The signal will be notified when the task finishes the cancel.

### getCancelFlag

    boolean getCancelFlag()

  return a flag if the user called cancel.

  Returns:
    true the user has called cancel, false the user doesn't call cancel.

### getStatus

    int getStatus()

  get the status of task

  Returns:
    the status

### setErrorHandlingOption

    void setErrorHandlingOption(int option)

  set the error handling mode for the first error. If the options is set to cancel_on_error, the task is cancelled just like the user calls cancel(). If the option is set the continue_on_erro, the task will continue and saves the error into the error list.

  Parameters:
    `option` - the error handling mode.

### close

    void close()

  close the task, relese any resources.

### setDataSource

    void setDataSource(IDocArchiveReader dataSource)

  set the data source used by the engine task. The dataSource is closed by this task.

  Parameters:
    `dataSource` - data source archive.

### setDataSource

    void setDataSource(IDocArchiveReader dataSource,
                       java.lang.String reportlet)

  set the data source used by the engine task.

  Parameters:
    `dataSource` - data source archive.
    `reportlet` - the bookmark of the reportlet.

### getErrors

    java.util.List getErrors()

  Gets all exceptions that are thrown out during executing this task. Each exception is supposed to be an instance of EngineException.

  Returns:
    the all the exceptions in a list.

### getTaskType

    int getTaskType()

  Gets the type of the engine.

  Returns:
    task type including:
    - 0 for GetParameterDefinition Task
    - 1 for Run Task
    - 2 for Render Task
    - 3 for Run and Render Task
    - 4 for DataExtraction Task
    - -1 default value for unknown task

### getLogger

    java.util.logging.Logger getLogger()

  return the logger used by the task.

  Returns:
    logger used by the task.

### setLogger

    void setLogger(java.util.logging.Logger logger)

  set the logger used by the task.

  Parameters:
    `logger` - the logger used to output messages.

### setUserACL

    void setUserACL(java.lang.String[] acl)

  set user's ACL.

  Parameters:
    `acl` - a string array, each element is a single SID.

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