CPEFactory (Apache UIMA Java SDK: uimaj 2.5.0 API)

java.lang.Object
- org.apache.uima.collection.impl.cpm.container.CPEFactory

```
public class CPEFactory
extends Object
```
Component responsible for generating objects representing cpe descriptor configuration. Provides various ways to instantiate object model representing cpe configuration. In the simplest form it ingests an xml file (cpe descriptor), parses it and creates an object for every element in the xml file.
Using objects representing configuration, this component creates CollectionReader CasInitializer, Analysis Engines, and Cas Consumers.
In addition to creating object, this component provides read/write access to the object model allowing for dynamic or programmatic modifications. It facilitates plugging in existing CollectionReaders and CasProcessors.

Field Summary

Fields
Modifier and Type Field and Description

HashMap casProcessorConfigMap

static String CPM_HOME

Fields
Modifier and Type	Field and Description
`HashMap`	`casProcessorConfigMap`
`static String`	`CPM_HOME`

Constructor Summary

Constructors
Constructor and Description
`CPEFactory(CpeDescription aDescriptor, ResourceManager aResourceManager)` Create a new CPEFactory for a CpeDescription that's already been parsed.
`CPEFactory(ResourceManager aResourceManager)` Create a new CPEFactory on which we will later call parse(String) to parse a CPE descriptor.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`addCasProcessor(CasProcessor aCasProcessor)` Appends given Cas Processor to the list of CasProcessors
`void`	`addCollectionReader(BaseCollectionReader collectionReader)`
`CasProcessor[]`	`getCasProcessors()` Returns an array of Cas Processors instantiated from the cpe descriptor
`BaseCollectionReader`	`getCollectionReader()` Returns Collection Reader instantiated from configuration in the cpe descriptor.
`CpeConfiguration`	`getCPEConfig()` Returns an object containing global CPE configuration including: Number of documents to process Checkpoint configuration id of the document begin processing
`CpeDescription`	`getCpeDescriptor()` Returns Cpe Descriptor
`String`	`getDescriptor(List aList)`
`URL`	`getDescriptorURL(CpeCasProcessor aCasProcessorCfg)` Returns a descriptor path associated with Cas Processor
`int`	`getProcessingUnitThreadCount()` Returns number of processing threads (Processing Units)
`ResourceManager`	`getResourceManager()` Gets the ResourceManager that all components of this CPE should share.
`ResourceSpecifier`	`getSpecifier(URL aDescriptorUrl)` Instantiates a ResourceSpecifier from a given URL.
`boolean`	`isDefault()`
`boolean`	`isDefinitionInstanceOf(Class aResourceClass, ResourceSpecifier resourceSpecifier, String aDescriptor)` Check if a class has appropriate type
`void`	`parse()` Creates an object representation from default cpe descriptor.
`void`	`parse(InputStream aDescriptorStream)` Creates an object representation for configuration in a given stream
`void`	`parse(String aDescriptor)` Creates an object representation for configuration in a given cpe descriptor file.
`CasProcessor`	`produceCasDataConsumer(Class aResourceClass, ResourceSpecifier aSpecifier, Map aAdditionalParams)` Instantiates CasData Consumer from a given class.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - CPM_HOME
```
public static final String CPM_HOME
```
    See Also:
    Constant Field Values
  - casProcessorConfigMap
```
public HashMap casProcessorConfigMap
```
- Constructor Detail
  - CPEFactory
```
public CPEFactory(ResourceManager aResourceManager)
```
    Create a new CPEFactory on which we will later call parse(String) to parse a CPE descriptor.
  - CPEFactory
```
public CPEFactory(CpeDescription aDescriptor,
          ResourceManager aResourceManager)
           throws ResourceInitializationException
```
    Create a new CPEFactory for a CpeDescription that's already been parsed.
    
    Parameters:
    aDescriptor -
    aResourceManager - the resource manager that all components of this CPE will share If null, a new ResourceManager will be created.
    
    Throws:
    
    ResourceInitializationException
- Method Detail
  - parse
```
public void parse(String aDescriptor)
           throws InstantiationException
```
    Creates an object representation for configuration in a given cpe descriptor file.
    
    Parameters:
    aDescriptor - - path to the descriptor
    
    Throws:
    
    InstantiationException - -
  - parse
```
public void parse(InputStream aDescriptorStream)
           throws InstantiationException
```
    Creates an object representation for configuration in a given stream
    
    Parameters:
    aDescriptorStream - - stream containing cpe description
    
    Throws:
    
    InstantiationException - -
  - parse
```
public void parse()
```
    Creates an object representation from default cpe descriptor.
    
    Throws:
    
    InstantiationException - -
  - getCollectionReader
```
public BaseCollectionReader getCollectionReader()
                                         throws ResourceConfigurationException
```
    Returns Collection Reader instantiated from configuration in the cpe descriptor. It also creates and intializes the Cas Initializer if one is defined and associates it with the CollectionReader.
    
    Returns:
    - CollectionReader instance
    
    Throws:
    
    ConfigurationException - -
    
    ResourceConfigurationException
  - getCasProcessors
```
public CasProcessor[] getCasProcessors()
                                throws ResourceConfigurationException
```
    Returns an array of Cas Processors instantiated from the cpe descriptor
    
    Returns:
    - array of CasProcessor instances
    
    Throws:
    
    ResourceConfigurationException - -
  - isDefinitionInstanceOf
```
public boolean isDefinitionInstanceOf(Class aResourceClass,
                             ResourceSpecifier resourceSpecifier,
                             String aDescriptor)
                               throws ResourceConfigurationException
```
    Check if a class has appropriate type
    
    Parameters:
    aResourceClass - - class to check
    resourceSpecifier - - specifier containing expected type
    aDescriptor - - descriptor name
    
    Returns:
    true - if class matches type
    
    Throws:
    
    ResourceConfigurationException - -
  - produceCasDataConsumer
```
public CasProcessor produceCasDataConsumer(Class aResourceClass,
                                  ResourceSpecifier aSpecifier,
                                  Map aAdditionalParams)
                                    throws ResourceInitializationException
```
    Instantiates CasData Consumer from a given class.
    
    Parameters:
    aResourceClass - - CasDataConsumer class
    aSpecifier - - specifier
    aAdditionalParams - - parameters used to initialize CasDataConsumer
    
    Returns:
    - instance of CasProcessor
    
    Throws:
    
    ResourceInitializationException - -
  - getDescriptorURL
```
public URL getDescriptorURL(CpeCasProcessor aCasProcessorCfg)
                     throws ResourceConfigurationException
```
    Returns a descriptor path associated with Cas Processor
    
    Parameters:
    aCasProcessorCfg - - Cas Processor configuration
    
    Returns:
    - Descriptor path
    
    Throws:
    
    ResourceConfigurationException - -
  - getSpecifier
```
public ResourceSpecifier getSpecifier(URL aDescriptorUrl)
                               throws Exception
```
    Instantiates a ResourceSpecifier from a given URL.
    
    Parameters:
    aDescriptorUrl - - URL of descriptor
    
    Returns:
    - ResourceSpecifier
    
    Throws:
    
    Exception - -
  - getCPEConfig
```
public CpeConfiguration getCPEConfig()
                              throws InstantiationException
```
    Returns an object containing global CPE configuration including:
  - Number of documents to process
  - Checkpoint configuration
  - id of the document begin processing

Returns:: - Global CPE Configuration
Throws:: InstantiationException - -

getProcessingUnitThreadCount
```
public int getProcessingUnitThreadCount()
                                 throws ResourceConfigurationException
```
Returns number of processing threads (Processing Units)

Returns:
Number of processing threads

Throws:

ResourceConfigurationException - -

isDefault
```
public boolean isDefault()
```
Returns:
true if the configuration is the default

getCpeDescriptor
```
public CpeDescription getCpeDescriptor()
```
Returns Cpe Descriptor

Returns:
the Cpe Descriptor

addCasProcessor
```
public void addCasProcessor(CasProcessor aCasProcessor)
                     throws ResourceConfigurationException
```
Appends given Cas Processor to the list of CasProcessors

Parameters:
aCasProcessor - - CasProcessor to add

Throws:

ResourceConfigurationException

getDescriptor
```
public String getDescriptor(List aList)
                     throws ResourceConfigurationException
```
Parameters:
aList -

Returns:
the cpe descriptor constructed from the list

Throws:

ResourceConfigurationException - -

addCollectionReader
```
public void addCollectionReader(BaseCollectionReader collectionReader)
```
Parameters:
collectionReader - - collection reader to use by the CPM

getResourceManager
```
public ResourceManager getResourceManager()
```
Gets the ResourceManager that all components of this CPE should share.

Returns:
the resource manager

Class CPEFactory

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

CPM_HOME

casProcessorConfigMap

Constructor Detail

CPEFactory

CPEFactory

Method Detail

parse

parse

parse

getCollectionReader

getCasProcessors

isDefinitionInstanceOf

produceCasDataConsumer

getDescriptorURL

getSpecifier

getCPEConfig

getProcessingUnitThreadCount

isDefault

getCpeDescriptor

addCasProcessor

getDescriptor

addCollectionReader

getResourceManager