BaseCPM (Apache UIMA Java SDK 2.10.0 User-Level API Documentation)

```
public interface BaseCPM
```
The Base CPM interface is a lower-level interface to the Collection Processing Manager. It is recommended that developers use the CollectionProcessingEngine and CpeDescription interfaces instead.
The CPM is configured with a list of CasProcessors by calling its addCasProcessor(CasProcessor) method. A single BaseCollectionReader must be provided, via the setCollectionReader(BaseCollectionReader) method. Collection processing is then initiated by calling the process() method.
Listeners can register with the CPM by calling the addStatusCallbackListener(BaseStatusCallbackListener) method. These listeners receive status callbacks during the processing. At any time, performance and progress reports are available from the getPerformanceReport() and getProgress() methods.
A CPM implementation may choose to implement parallelization of the processing, but this is not a requirement of the architecture.
Note that a CPM only supports processing one collection at a time. Attempting to reconfigure a CPM or start a new processing job while a previous processing job is occurring will result in a UIMA_IllegalStateException. Processing multiple collections simultaneously is done by instantiating and configuring multiple instances of the CPM.

Field Summary

Fields
Modifier and Type	Field and Description
`static String`	`DOCUMENT_TEXT_FEATURE` Only used for alternate CasData forms of the CAS (not used in this UIMA SDK release).
`static String`	`DOCUMENT_TEXT_TYPE` Only used for alternate CasData forms of the CAS (not used in this UIMA SDK release).

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`addCasProcessor(CasProcessor aCasProcessor)` Adds a `CasProcessor` to this CPM's list of consumers.
`void`	`addCasProcessor(CasProcessor aCasProcessor, int aIndex)` Adds a `CasProcessor` to this CPM's list of consumers.
`void`	`addStatusCallbackListener(BaseStatusCallbackListener aListener)` Registers a listsner to receive status callbacks.
`void`	`disableCasProcessor(String aCasProcessorName)` Disables a `CasProcessor` in this CPM's list of CasProcessors.
`CasProcessor[]`	`getCasProcessors()` Gets the `CasProcessors`s assigned to this CPM, in the order in which they will be called by the CPM.
`BaseCollectionReader`	`getCollectionReader()` Gets the Collection Reader for this CPM.
`ProcessTrace`	`getPerformanceReport()` Gets a performance report for the processing that is currently occurring or has just completed.
`Progress[]`	`getProgress()` Gets a progress report for the processing that is currently occurring or has just completed.
`boolean`	`isPaused()` Determines whether this CPM's processing is currently paused.
`boolean`	`isPauseOnException()` Gets whether this CPM will automatically pause processing if an exception occurs.
`boolean`	`isProcessing()` Determines whether this CPM is currently processing.
`boolean`	`isSerialProcessingRequired()` Gets whether this CPM is required to process the collection's elements serially (as opposed to performing parallelization).
`void`	`pause()` Pauses processing.
`void`	`process()` Initiates processing of a collection.
`void`	`removeCasProcessor(CasProcessor aCasProcessor)` Removes a `CasProcessor` to this CPM's list of consumers.
`void`	`removeStatusCallbackListener(BaseStatusCallbackListener aListener)` Unregisters a status callback listener.
`void`	`resume()` Resumes processing that has been paused.
`void`	`resume(boolean aRetryFailed)` Resumes processing that has been paused.
`void`	`setCollectionReader(BaseCollectionReader aCollectionReader)` Sets the Collection Reader for this CPM.
`void`	`setPauseOnException(boolean aPause)` Sets whether this CPM will automatically pause processing if an exception occurs.
`void`	`setSerialProcessingRequired(boolean aRequired)` Sets whether this CPM is required to process the collection's elements serially (as opposed to performing parallelization).
`void`	`stop()` Stops processing.

- Field Detail
  - DOCUMENT_TEXT_TYPE
```
static final String DOCUMENT_TEXT_TYPE
```
    Only used for alternate CasData forms of the CAS (not used in this UIMA SDK release). Name of CasData CAS type that holds document text. When creating CasData forms of the CAS, a feature structure of this type must be created by the collection reader.
    
    See Also:
    Constant Field Values
  - DOCUMENT_TEXT_FEATURE
```
static final String DOCUMENT_TEXT_FEATURE
```
    Only used for alternate CasData forms of the CAS (not used in this UIMA SDK release). Name of CAS feature (on DOCUMENT_TEXT_TYPE feature structure) that holds document text. When creating CasDta forms of the CAS, this feature must be set by the collection reader.
    
    See Also:
    Constant Field Values
- Method Detail
  - getCollectionReader
```
BaseCollectionReader getCollectionReader()
```
    Gets the Collection Reader for this CPM.
    
    Returns:
    the collection reader
  - setCollectionReader
```
void setCollectionReader(BaseCollectionReader aCollectionReader)
```
    Sets the Collection Reader for this CPM.
    
    Parameters:
    aCollectionReader - the collection reader
  - getCasProcessors
```
CasProcessor[] getCasProcessors()
```
    Gets the CasProcessorss assigned to this CPM, in the order in which they will be called by the CPM.
    
    Returns:
    an array of CasProcessors
  - addCasProcessor
```
void addCasProcessor(CasProcessor aCasProcessor)
                     throws ResourceConfigurationException
```
    Adds a CasProcessor to this CPM's list of consumers. The new CasProcessor will be added to the end of the list of CAS Processors.
    
    Parameters:
    aCasProcessor - a CasProcessor to add
    
    Throws:
    
    ResourceConfigurationException - if this CPM is currently processing
  - addCasProcessor
```
void addCasProcessor(CasProcessor aCasProcessor,
                   int aIndex)
                     throws ResourceConfigurationException
```
    Adds a CasProcessor to this CPM's list of consumers. The new CasProcessor will be added at the specified index.
    
    Parameters:
    aCasProcessor - the CasProcessor to add
    aIndex - the index at which to add the CasProcessor
    
    Throws:
    
    ResourceConfigurationException - if this CPM is currently processing
  - removeCasProcessor
```
void removeCasProcessor(CasProcessor aCasProcessor)
```
    Removes a CasProcessor to this CPM's list of consumers.
    
    Parameters:
    aCasProcessor - the CasProcessor to remove
  - disableCasProcessor
```
void disableCasProcessor(String aCasProcessorName)
```
    Disables a CasProcessor in this CPM's list of CasProcessors.
    
    Parameters:
    aCasProcessorName - the name of the CasProcessor to disable
  - isSerialProcessingRequired
```
boolean isSerialProcessingRequired()
```
    Gets whether this CPM is required to process the collection's elements serially (as opposed to performing parallelization). Note that a value of false does not guarantee that parallelization is performed; this is left up to the CPM implementation.
    
    Returns:
    true if and only if serial processing is required
  - setSerialProcessingRequired
```
void setSerialProcessingRequired(boolean aRequired)
```
    Sets whether this CPM is required to process the collection's elements serially (as opposed to performing parallelization). If this method is not called, the default is false. Note that a value of false does not guarantee that parallelization is performed; this is left up to the CPM implementation.
    
    Parameters:
    aRequired - true if and only if serial processing is required
  - isPauseOnException
```
boolean isPauseOnException()
```
    Gets whether this CPM will automatically pause processing if an exception occurs. If processing is paused it can be resumed by calling the resume(boolean) method.
    
    Returns:
    true if and only if this CPM will pause on exception
  - setPauseOnException
```
void setPauseOnException(boolean aPause)
```
    Sets whether this CPM will automatically pause processing if an exception occurs. If processing is paused it can be resumed by calling the resume(boolean) method.
    
    Parameters:
    aPause - true if and only if this CPM should pause on exception
  - addStatusCallbackListener
```
void addStatusCallbackListener(BaseStatusCallbackListener aListener)
```
    Registers a listsner to receive status callbacks.
    
    Parameters:
    aListener - the listener to add
  - removeStatusCallbackListener
```
void removeStatusCallbackListener(BaseStatusCallbackListener aListener)
```
    Unregisters a status callback listener.
    
    Parameters:
    aListener - the listener to remove
  - process
```
void process()
             throws ResourceInitializationException
```
    Initiates processing of a collection. This method starts the processing in another thread and returns immediately. Status of the processing can be obtained by registering a listener with the addStatusCallbackListener(BaseStatusCallbackListener) method.
    A CPM can only process one collection at a time. If this method is called while a previous processing request has not yet completed, a UIMA_IllegalStateException will result. To find out whether a CPM is free to begin another processing request, call the isProcessing() method.
    
    Throws:
    
    ResourceInitializationException - if an error occurs during initialization
  - isProcessing
```
boolean isProcessing()
```
    Determines whether this CPM is currently processing. This means that a processing request has been submitted and has not yet completed or been stop()ped. If processing is paused, this method will still return true.
    
    Returns:
    true if and only if this CPM is currently processing.
  - pause
```
void pause()
```
    Pauses processing. Processing can later be resumed by calling the resume(boolean) method.
  - isPaused
```
boolean isPaused()
```
    Determines whether this CPM's processing is currently paused.
    
    Returns:
    true if and only if this CPM's processing is currently paused.
  - resume
```
void resume(boolean aRetryFailed)
```
    Resumes processing that has been paused.
    
    Parameters:
    aRetryFailed - if processing was paused because an exception occurred (see setPauseOnException(boolean)), setting a value of true for this parameter will cause the failed entity to be retried. A value of false (the default) will cause processing to continue with the next entity after the failure.
  - resume
```
void resume()
```
    Resumes processing that has been paused.
  - stop
```
void stop()
```
    Stops processing.
  - getPerformanceReport
```
ProcessTrace getPerformanceReport()
```
    Gets a performance report for the processing that is currently occurring or has just completed.
    
    Returns:
    an object containing performance statistics
  - getProgress
```
Progress[] getProgress()
```
    Gets a progress report for the processing that is currently occurring or has just completed.
    
    Returns:
    an array of Progress objects, each of which represents the progress in a different set of units (for example number of entities or bytes)

Interface BaseCPM

Field Summary

Method Summary

Field Detail

DOCUMENT_TEXT_TYPE

DOCUMENT_TEXT_FEATURE

Method Detail

getCollectionReader

setCollectionReader

getCasProcessors

addCasProcessor

addCasProcessor

removeCasProcessor

disableCasProcessor

isSerialProcessingRequired

setSerialProcessingRequired

isPauseOnException

setPauseOnException

addStatusCallbackListener

removeStatusCallbackListener

process

isProcessing

pause

isPaused

resume

resume

stop

getPerformanceReport

getProgress