org.apache.uima.analysis_engine

## Interface AnalysisEngine

- All Superinterfaces:
    CasObjectProcessor, CasProcessor, ConfigurableResource, Resource
  All Known Subinterfaces:
    TextAnalysisEngine

      public interface AnalysisEngine
      extends ConfigurableResource, CasObjectProcessor

  An Analysis Engine is a component responsible for analyzing unstructured information, discovering and representing semantic content. Unstructured information includes, but is not restricted to, text documents.

  An AnalysisEngine operates on an "analysis structure" (implemented by `CAS`). The `CAS` contains the artifact to be processed as well as semantic information already inferred from that artifact. The AnalysisEngine analyzes this information and adds new information to the `CAS`.

  To create an instance of an Analysis Engine, an application should call `UIMAFramework.produceAnalysisEngine(ResourceSpecifier)`.

  A typical application interacts with the Analysis Engine interface as follows:

  1. Call `newCAS()` to create a new Common Analysis System appropriate for this AnalysisEngine.
  2. Use the `CAS` interface to populate the `CAS` with the artifact to be analyzed any information known about this document (e.g. the language of a text document).
  3. Optionally, create a `ResultSpecification` that identifies the results you would like this AnalysisEngine to generate (e.g. people, places, and dates), and call the {#link `setResultSpecification(ResultSpecification)` method.
  4. Call `process(CAS)` - the AnalysisEngine will perform its analysis.
  5. Retrieve the results from the `CAS`.
  6. Call `CAS.reset()` to clear out the `CAS` and prepare for processing a new artifact.
  7. Repeat steps 2 through 6 for each artifact to be processed.

  Important: It is highly recommended that you reuse `CAS` objects rather than calling `newCAS()` prior to each analysis. This is because `CAS` objects may be expensive to create and may consume a significant amount of memory.

  Instead of using the `CAS` interface, applications may wish to use the Java-object-based `JCas` interface. In that case, the call to `newCAS` from step 1 above would be replaced by `newJCas()`, and the `process(JCas)` method would be used.

  Analysis Engine implementations may or may not be capable of simultaneously processing multiple documents in a multithreaded environment. See the documentation associated with the implementation or factory method (e.g. (`UIMAFramework.produceAnalysisEngine(ResourceSpecifier)`) that you are using.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static String` | `PARAM_CONFIG_PARAM_SETTINGS` Deprecated. use `Resource.PARAM_CONFIG_PARAM_SETTINGS`
    `static String` | `PARAM_MBEAN_NAME_PREFIX` Key for the initialization parameter whose value is a String representing the prefix that will be added to all of the JMX MBean names that are generated by this AE (and its components, if it is an aggregate).
    `static String` | `PARAM_MBEAN_SERVER` Key for the initialization parameter whose value is a JMX MBeanServer instance, with which this AnalysisEngine will register an MBean that allows monitoring of the AE's performance through JMX.
    `static String` | `PARAM_NUM_SIMULTANEOUS_REQUESTS` Key for the initialization parameter whose value is the number of simultaneous calls to `process(CAS)` that will be supported.
    `static String` | `PARAM_RESOURCE_MANAGER` Deprecated. use `Resource.PARAM_RESOURCE_MANAGER`
    `static String` | `PARAM_TIMEOUT_PERIOD` Key for the initialization parameter whose value is the maximum number of milliseconds to wait for a pooled object (see `PARAM_NUM_SIMULTANEOUS_REQUESTS`) to become available to serve a `process(CAS)` request.

    - ### Fields inherited from interface org.apache.uima.resource.Resource

      `PARAM_AGGREGATE_SOFA_MAPPINGS, PARAM_CONFIG_MANAGER, PARAM_EXTERNAL_OVERRIDE_SETTINGS, PARAM_PERFORMANCE_TUNING_SETTINGS, PARAM_UIMA_CONTEXT`

  - ### Method Summary

    All Methods Instance Methods Abstract Methods Deprecated Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `batchProcessComplete()` Notifies this AnalysisEngine that processing of a batch has completed.
    `void` | `collectionProcessComplete()` Notifies this AnalysisEngine that processing of an entire collection has completed.
    `ResultSpecification` | `createResultSpecification()` A factory method used to create an instance of `ResultSpecification` for use with this AnalysisEngine.
    `ResultSpecification` | `createResultSpecification(TypeSystem aTypeSystem)` A factory method used to create an instance of `ResultSpecification` for use with this AnalysisEngine.
    `AnalysisEngineMetaData` | `getAnalysisEngineMetaData()` Gets the metadata that describes this `AnalysisEngine`.
    `String[]` | `getFeatureNamesForType(String aTypeName)` Gets the names of the features that are defined on one of the CAS types that this AE inputs or outputs.
    `Logger` | `getLogger()` Gets the Logger that this Analysis Engine is currently using.
    `AnalysisEngineManagement` | `getManagementInterface()` Gets an object that can be used to do monitoring or management of this AnalysisEngine.
    `Properties` | `getPerformanceTuningSettings()` Gets the performance tuning settings in effect for this Analysis Engine.
    `ResourceManager` | `getResourceManager()` Gets the `ResourceManager` used by this AnalysisEngine.
    `boolean` | `initialize(ResourceSpecifier aSpecifier, Map<String,Object> aAdditionalParams)` Initializes this `Resource` from a `ResourceSpecifier`.
    `CAS` | `newCAS()` Creates a new Common Analysis System appropriate for this Analysis Engine.
    `JCas` | `newJCas()` Similar to `newCAS()` but wraps the new CAS objects with the Java-object-based `JCas` interface.
    `void` | `process(AnalysisProcessData aProcessData, ResultSpecification aResultSpec)` Deprecated. This is no longer used by the framework and was never intended for users to call. Use {#link #process(CAS)} instead.
    `ProcessTrace` | `process(CAS aCAS)` Invokes this AnalysisEngine's analysis logic.
    `ProcessTrace` | `process(CAS aCAS, ResultSpecification aResultSpec)` Invokes this AnalysisEngine's analysis logic.
    `void` | `process(CAS aCAS, ResultSpecification aResultSpec, ProcessTrace aTrace)` Invokes this AnalysisEngine's analysis logic.
    `ProcessTrace` | `process(JCas aJCas)` Similar to `process(CAS)` but uses the Java-object-based `JCas` interface instead of the general `CAS` interface.
    `ProcessTrace` | `process(JCas aJCas, ResultSpecification aResultSpec)` Similar to `process(CAS,ResultSpecification)` but uses the Java-object-based `JCas` interface instead of the general `CAS` interface.
    `void` | `process(JCas aJCas, ResultSpecification aResultSpec, ProcessTrace aTrace)` Similar to `process(CAS, ResultSpecification, ProcessTrace)` but uses the Java-object-based `JCas` interface instead of the general `CAS` interface.
    `CasIterator` | `processAndOutputNewCASes(CAS aCAS)` Processes a CAS, possibly producing multiple CASes as a result.
    `JCasIterator` | `processAndOutputNewCASes(JCas aJCAS)` Processes a JCAS, possibly producing multiple JCASes as a result.
    `void` | `reconfigure()` Reconfigures this Resource using the most current parameter settings.
    `void` | `setLogger(Logger aLogger)` Sets the Logger that this Analysis Engine will use.
    `void` | `setResultSpecification(ResultSpecification aResultSpec)` Sets the list of output types and features that the application wants this AnalysisEngine to produce.

    - ### Methods inherited from interface org.apache.uima.resource.ConfigurableResource

      `getConfigParameterValue, getConfigParameterValue, setConfigParameterValue, setConfigParameterValue`

    - ### Methods inherited from interface org.apache.uima.resource.Resource

      `destroy, getMetaData, getUimaContext, getUimaContextAdmin`

    - ### Methods inherited from interface org.apache.uima.collection.base_cpm.CasObjectProcessor

      `processCas, processCas, typeSystemInit`

    - ### Methods inherited from interface org.apache.uima.collection.base_cpm.CasProcessor

      `batchProcessComplete, collectionProcessComplete, getProcessingResourceMetaData, isReadOnly, isStateless`

- - ### Field Detail

    - #### PARAM_RESOURCE_MANAGER

          static final String PARAM_RESOURCE_MANAGER

      Deprecated. use `Resource.PARAM_RESOURCE_MANAGER`
      Key for the initialization parameter whose value is a reference to the `ResourceManager` that this AnalysisEngine should use. This value is used as a key in the `aAdditionalParams` Map that is passed to the `initialize(ResourceSpecifier,Map)` method.
      See Also:
        Constant Field Values

    - #### PARAM_CONFIG_PARAM_SETTINGS

          static final String PARAM_CONFIG_PARAM_SETTINGS

      Deprecated. use `Resource.PARAM_CONFIG_PARAM_SETTINGS`
      Key for the initialization parameter whose value is a `ConfigurationParameterSettings` object that holds configuration settings that will be used to configure this AnalysisEngine, overriding any conflicting settings specified in this AnalysisEngine's Descriptor. This value is used as a key in the `aAdditionalParams` Map that is passed to the `initialize(ResourceSpecifier,Map)` method.
      See Also:
        Constant Field Values

    - #### PARAM_NUM_SIMULTANEOUS_REQUESTS

          static final String PARAM_NUM_SIMULTANEOUS_REQUESTS

      Key for the initialization parameter whose value is the number of simultaneous calls to `process(CAS)` that will be supported. Analysis Engine implementations may use this to create a pool of objects (e.g. Annotators), each of which can process only one request at a time. Applications should be careful about setting this number higher than is necessary, since large pools of objects may increase initialization time and consume resources. Not all analysis engine implementations pay attention to this parameter.

      This value is used as a key in the `aAdditionalParams` Map that is passed to the `initialize(ResourceSpecifier,Map)` method.

      See Also:
        Constant Field Values

    - #### PARAM_TIMEOUT_PERIOD

          static final String PARAM_TIMEOUT_PERIOD

      Key for the initialization parameter whose value is the maximum number of milliseconds to wait for a pooled object (see `PARAM_NUM_SIMULTANEOUS_REQUESTS`) to become available to serve a `process(CAS)` request. If the processing has not begun within this time, an exception will be thrown. A value of zero will cause the AnalysisEngine to wait forever. Not all analysis* engine implementations pay attention to this parameter.

      This value is used as a key in the `aAdditionalParams` Map that is passed to the `initialize(ResourceSpecifier,Map)` method.

      See Also:
        Constant Field Values

    - #### PARAM_MBEAN_SERVER

          static final String PARAM_MBEAN_SERVER

      Key for the initialization parameter whose value is a JMX MBeanServer instance, with which this AnalysisEngine will register an MBean that allows monitoring of the AE's performance through JMX. If this is null, the platform MBean Server (Java 1.5 only) will be used.

      This value is used as a key in the `aAdditionalParams` Map that is passed to the `initialize(ResourceSpecifier,Map)` method.

      See Also:
        Constant Field Values

    - #### PARAM_MBEAN_NAME_PREFIX

          static final String PARAM_MBEAN_NAME_PREFIX

      Key for the initialization parameter whose value is a String representing the prefix that will be added to all of the JMX MBean names that are generated by this AE (and its components, if it is an aggregate). This allows an application that has its own MBeans to control how the UIMA MBeans are organized relative to the application's own MBeans.

      The string must be a valid JMX MBean name (although a name with only a domain and no keys is permitted). See http://java.sun.com/j2se/1.5.0/docs/api/javax/management/ObjectName.html for details.

      Examples of valid prefixes are:

      - foo.bar:
      - foo.bar:category=Stuff
      - foo.bar:category=Stuff,type=UIMA

      UIMA will append additional key,value pairs to this prefix. In particular, UIMA uses the key "name" (as the very last component of the MBean name), as well as the keys "p0","p1","p2",etc (to represent the chain of aggregates containing an AE). So the application may not use any of these keys in its prefix.

      This value is used as a key in the `aAdditionalParams` Map that is passed to the `initialize(ResourceSpecifier,Map)` method.

      See Also:
        Constant Field Values

  - ### Method Detail

    - #### initialize

          boolean initialize(ResourceSpecifier aSpecifier,
                             Map<String,Object> aAdditionalParams)
                      throws ResourceInitializationException

      Initializes this `Resource` from a `ResourceSpecifier`. Applications do not need to call this method. It is called automatically by the `ResourceFactory` and cannot be called a second time.

      The `AnalysisEngine` interface defines several optional parameter that can be passed in the `aAdditionalParams` Map - see the `PARAM` constants on this interface.

      Specified by:
        `initialize` in interface `Resource`
      Parameters:
        `aSpecifier` - specifies how to create a resource or locate an existing resource service.
        `aAdditionalParams` - a Map containing additional parameters. May be `null` if there are no parameters. Each class that implements this interface can decide what additional parameters it supports.
      Returns:
        true if and only if initialization completed successfully. Reutrns false if the given `ResourceSpecifier` is not of an appropriate type for this Resource. If the `ResourceSpecifier` is of an appropriate type but is invalid or if some other failure occurs, an exception should be thrown.
      Throws:
        `ResourceInitializationException` - if a failure occurs during initialization.
      See Also:
        `Resource.initialize(ResourceSpecifier,Map)`

    - #### getAnalysisEngineMetaData

          AnalysisEngineMetaData getAnalysisEngineMetaData()

      Gets the metadata that describes this `AnalysisEngine`. This is just a convenience method that calls `Resource.getMetaData()` and casts the result to a `AnalysisEngineMetaData`.
      Returns:
        an object containing all metadata for this AnalysisEngine

    - #### newCAS

          CAS newCAS()
              throws ResourceInitializationException

      Creates a new Common Analysis System appropriate for this Analysis Engine. An application can pre-populate this CAS, then pass it to the `process(CAS)` method. Then, when the process method returns, the CAS will contain the results of the analysis.

      Important: CAS creation is expensive, so if at all possible an application should reuse CASes. When a CAS instance is no longer being used, call its `CAS.reset()` method, which will remove all prior analysis information, and then reuse that same CAS instance for another call to `process(CAS)`.

      Note that the CAS allows multiple subjects of analysis (e.g. documents) and defines a separate "view" for each of them. If your application wants to work with a single subject of analysis, call the method `CAS.getCurrentView()` and operate on the returned view.

      Returns:
        a new `CAS` appropriate for this AnalysisEngine.
      Throws:
        `ResourceInitializationException` - if a CAS could not be created because this AnalysisEngine's CAS metadata (type system, type priorities, or FS indexes) are invalid. Ideally this would be checked at AnalysisEngine initialization time, and it will likely be moved in the future.

    - #### newJCas

          JCas newJCas()
                throws ResourceInitializationException

      Similar to `newCAS()` but wraps the new CAS objects with the Java-object-based `JCas` interface.

      Note: the JCas that is returned is equivalent to what you would get if you called `newCAS().getCurrentView().getJCas()`. That is, this method returns a view of the default Sofa, NOT a Base CAS.

      Important: CAS creation is expensive, so if at all possible an application should reuse CASes. When a JCas instance is no longer being used, call its `JCas.reset()` method, which will remove all prior analysis information, and then reuse that same JCas instance for another call to `process(JCas)`.

      Returns:
        a new `CAS` appropriate for this AnalysisEngine.
      Throws:
        `ResourceInitializationException` - if a CAS could not be created because this AnalysisEngine's CAS metadata (type system, type priorities, or FS indexes) are invalid. Ideally this would be checked at AnalysisEngine initialization time, and it will likely be moved in the future.

    - #### process

          ProcessTrace process(CAS aCAS,
                               ResultSpecification aResultSpec)
                        throws ResultNotSupportedException,
                               AnalysisEngineProcessException

      Invokes this AnalysisEngine's analysis logic. Prior to calling this method, the caller must ensure that the CAS has been populated with the artifact to be analyzed as well as any inputs required by this AnalysisEngine (as defined by this AnalysisEngine's `Capability` specification.)

      This version of the `process` method takes a `ResultSpecification` as an argument. The `ResultSpecification` is alist of output types and features that the application wants this AnalysisEngine to produce. If you are going to use the same `ResultSpecification` for multiple calls to `process`, it is not recommended to use this method. Instead call `setResultSpecification(ResultSpecification)` once and then call `process(CAS)` for each CAS that you want to process.

      Parameters:
        `aCAS` - the CAS containing the inputs to the processing. Analysis results will also be written to this CAS.
        `aResultSpec` - a list of outputs that this AnalysisEngine should produce.
      Returns:
        an object containing information about which AnalysisEngine components have executed and information, such as timing, about that execution.
      Throws:
        `ResultNotSupportedException` - if this AnalysisEngine is not capable of producing the results requested in `aResultSpec`.
        `AnalysisEngineProcessException` - if a failure occurs during processing.

    - #### process

          ProcessTrace process(CAS aCAS)
                        throws AnalysisEngineProcessException

      Invokes this AnalysisEngine's analysis logic. Prior to calling this method, the caller must ensure that the CAS has been populated with the artifact to be analyzed as well as any inputs required by this AnalysisEngine (as defined by this AnalysisEngine's `Capability` specification.)

      This version of `process` does not take a `ResultSpecification` parameter. You may specify a `ResultSpecification` by calling `setResultSpecification(ResultSpecification)` prior to calling this method.

      Parameters:
        `aCAS` - the CAS containing the inputs to the processing. Analysis results will also be written to this CAS.
      Returns:
        an object containing information about which AnalysisEngine components have executed and information, such as timing, about that execution.
      Throws:
        `AnalysisEngineProcessException` - if a failure occurs during processing.

    - #### process

          void process(CAS aCAS,
                       ResultSpecification aResultSpec,
                       ProcessTrace aTrace)
                throws ResultNotSupportedException,
                       AnalysisEngineProcessException

      Invokes this AnalysisEngine's analysis logic. Prior to calling this method, the caller must ensure that the CAS has been populated with the artifact to be analyzed as well as any inputs required by this AnalysisEngine (as defined by this AnalysisEngine's `Capability` specification.)

      This version of the `process` method takes a `ResultSpecification` as an argument. The `ResultSpecification` is a list of output types and features that the application wants this AnalysisEngine to produce. If you are going to use the same `ResultSpecification` for multiple calls to `process`, it is not recommended to use this method. Instead call `setResultSpecification(ResultSpecification)` once and then call `process(CAS)` for each CAS that you want to process.

      This version of this method also takes a `ProcessTrace` object as a parameter. This allows trace events to be written to an existing `ProcessTrace` rather than a new one.

      Parameters:
        `aCAS` - the CAS containing the inputs to the processing. Analysis results will also be written to this CAS.
        `aResultSpec` - a list of outputs that this AnalysisEngine should produce.
        `aTrace` - the object to which trace events will be recorded
      Throws:
        `ResultNotSupportedException` - if this AnalysisEngine is not capable of producing the results requested in `aResultSpec`.
        `AnalysisEngineProcessException` - if a failure occurs during processing.

    - #### process

          @Deprecated
          void process(AnalysisProcessData aProcessData,
                                    ResultSpecification aResultSpec)
                             throws ResultNotSupportedException,
                                    AnalysisEngineProcessException

      Deprecated. This is no longer used by the framework and was never intended for users to call. Use {#link #process(CAS)} instead.
      Invokes this AnalysisEngine's analysis logic. Prior to calling this method, the caller must ensure that the CAS has been populated with the artifact to be analyzed as well as any inputs required by this AnalysisEngine (as defined by this AnalysisEngine's `Capability` specification.)

      This version of this method is not normally used directly by applications. It is used to call Analysis Engines that are components within an aggregate Analysis Engine, so that they can share all information in the `AnalysisProcessData` object, which includes the CAS and the ProcessTrace.

      Parameters:
        `aResultSpec` - a list of outputs that this AnalysisEngine should produce. A `null` result specification is equivalent to a request for all possible results.
        `aProcessData` - the data that will be modified during processing. This includes the CAS and the ProcessTrace.
      Throws:
        `ResultNotSupportedException` - if this AnalysisEngine is not capable of producing the results requested in `aResultSpec`.
        `AnalysisEngineProcessException` - if a failure occurs during processing.

    - #### process

          ProcessTrace process(JCas aJCas)
                        throws AnalysisEngineProcessException

      Similar to `process(CAS)` but uses the Java-object-based `JCas` interface instead of the general `CAS` interface.
      Parameters:
        `aJCas` - the JCas containing the inputs to the processing. Analysis results will also be written to this JCas.
      Returns:
        an object containing information about which AnalysisEngine components have executed and information, such as timing, about that execution.
      Throws:
        `AnalysisEngineProcessException` - if a failure occurs during processing.

    - #### process

          ProcessTrace process(JCas aJCas,
                               ResultSpecification aResultSpec)
                        throws ResultNotSupportedException,
                               AnalysisEngineProcessException

      Similar to `process(CAS,ResultSpecification)` but uses the Java-object-based `JCas` interface instead of the general `CAS` interface.

      This version of the `process` method takes a `ResultSpecification` as an argument. The `ResultSpecification` is a list of output types and features that the application wants this AnalysisEngine to produce. If you are going to use the same `ResultSpecification` for multiple calls to `process`, it is not recommended to use this method. Instead call `setResultSpecification(ResultSpecification)` once and then call `process(JCas)` for each CAS that you want to process.

      Parameters:
        `aJCas` - the JCas containing the inputs to the processing. Analysis results will also be written to this JCas.
        `aResultSpec` - a list of outputs that this AnalysisEngine should produce.
      Returns:
        an object containing information about which AnalysisEngine components have executed and information, such as timing, about that execution.
      Throws:
        `ResultNotSupportedException` - if this AnalysisEngine is not capable of producing the results requested in `aResultSpec`.
        `AnalysisEngineProcessException` - if a failure occurs during processing.

    - #### process

          void process(JCas aJCas,
                       ResultSpecification aResultSpec,
                       ProcessTrace aTrace)
                throws ResultNotSupportedException,
                       AnalysisEngineProcessException

      Similar to `process(CAS, ResultSpecification, ProcessTrace)` but uses the Java-object-based `JCas` interface instead of the general `CAS` interface.

      This version of the `process` method takes a `ResultSpecification` as an argument. The `ResultSpecification` is a list of output types and features that the application wants this AnalysisEngine to produce. If you are going to use the same `ResultSpecification` for multiple calls to `process`, it is not recommended to use this method. Instead call `setResultSpecification(ResultSpecification)` once and then call `process(JCas)` for each CAS that you want to process.

      This version of this method also takes a `ProcessTrace` object as a parameter. This allows trace events to be written to an existing `ProcessTrace` rather than a new one.

      Parameters:
        `aJCas` - the JCas containing the inputs to the processing. Analysis results will also be written to this JCas.
        `aResultSpec` - a list of outputs that this AnalysisEngine should produce.
        `aTrace` - the object to which trace events will be recorded
      Throws:
        `ResultNotSupportedException` - if this AnalysisEngine is not capable of producing the results requested in `aResultSpec`.
        `AnalysisEngineProcessException` - if a failure occurs during processing.

    - #### processAndOutputNewCASes

          CasIterator processAndOutputNewCASes(CAS aCAS)
                                        throws AnalysisEngineProcessException

      Processes a CAS, possibly producing multiple CASes as a result. The application uses the `CasIterator` interface to step through the output CASes.

      If this Analysis Engine does not produce output CASes, then the `CasIterator` will return no elements. You can check if an AnalysisEngine is capable of producing output CASes by checking the `OperationalProperties.getOutputsNewCASes()` operational property (`getAnalysisEngineMetaData().getOperationalProperties().getOutputsNewCASes()`).

      Once this method is called, the AnalysisEngine "owns" `aCAS` until such time as the `CasIterator.hasNext()` method returns false. That is, the caller should not attempt to modify or access the input CAS until it has read all of the elements from the CasIterator. If the caller wants to abort the processing before having read all of the output CASes, it may call `CasIterator.release()`, which will stop further processing from occurring, and ownership of `aCAS` will revert to the caller.

      Parameters:
        `aCAS` - the CAS to be processed
      Returns:
        an object for iterating through any output CASes
      Throws:
        `AnalysisEngineProcessException` - if a failure occurs during processing

    - #### processAndOutputNewCASes

          JCasIterator processAndOutputNewCASes(JCas aJCAS)
                                         throws AnalysisEngineProcessException

      Processes a JCAS, possibly producing multiple JCASes as a result. The application uses the `JCasIterator` interface to step through the output JCASes.

      If this Analysis Engine does not produce output CASes, then the `CasIterator` will return no elements. You can check if an AnalysisEngine is capable of producing output CASes by checking the `OperationalProperties.getOutputsNewCASes()` operational property (`getAnalysisEngineMetaData().getOperationalProperties().getOutputsNewCASes()`).

      Once this method is called, the AnalysisEngine "owns" `aJCAS` until such time as the `JCasIterator.hasNext()` method returns false. That is, the caller should not attempt to modify or access the input JCAS until it has read all of the elements from the JCasIterator. outputCASes, it may call `JCasIterator.release()`, which will stop further processing from occurring, and ownership of `aJCAS` will revert to the caller.

      Parameters:
        `aJCAS` - the JCAS to be processed
      Returns:
        an object for iterating through any output JCASes
      Throws:
        `AnalysisEngineProcessException` - if a failure occurs during processing

    - #### batchProcessComplete

          void batchProcessComplete()
                             throws AnalysisEngineProcessException

      Notifies this AnalysisEngine that processing of a batch has completed. It is up to the caller to determine the size of a batch. Components (particularly CAS Consumers) inside this Analysis Engine may respond to this event, for example by writing data to the disk.
      Throws:
        `AnalysisEngineProcessException` - if an exception occurs during processing

    - #### collectionProcessComplete

          void collectionProcessComplete()
                                  throws AnalysisEngineProcessException

      Notifies this AnalysisEngine that processing of an entire collection has completed. It is up to the caller to determine when this has occurred. Components (particularly CAS Consumers) inside this Analysis Engine may respond to this event, for example by writing data to the disk.

      If this AnalysisEngine is an aggregate, this method will call the collectionProcessComplete method of all components of that aggregate. If the aggregate descriptor declares a `fixedFlow` or `capabilityLanguageFlow`, then the components' collectionProcessComplete methods will be called in the order specified by that flow element. Once all components in the flow have been called, any components not declared in the flow will be called, in arbitrary order. If there is no `fixedFlow` or `capabilityLanguageFlow`, then all components in the aggregate will be called in arbitrary order.

      Throws:
        `AnalysisEngineProcessException` - if an exception occurs during processing

    - #### createResultSpecification

          ResultSpecification createResultSpecification()

      A factory method used to create an instance of `ResultSpecification` for use with this AnalysisEngine. Applications use this method to construct `ResultSpecification`s to pass to this AnalysisEngine's `setResultSpecification(ResultSpecification)` method.

      See also `createResultSpecification(TypeSystem)` which should be used if the type system associated with this result specification is known at this point in time.

      Returns:
        a new instance of `ResultSpecification`

    - #### createResultSpecification

          ResultSpecification createResultSpecification(TypeSystem aTypeSystem)

      A factory method used to create an instance of `ResultSpecification` for use with this AnalysisEngine. Applications use this method to construct `ResultSpecification`s to pass to this AnalysisEngine's `setResultSpecification(ResultSpecification)` method.
      Parameters:
        `aTypeSystem` - the type system
      Returns:
        a new instance of `ResultSpecification`

    - #### getResourceManager

          ResourceManager getResourceManager()

      Gets the `ResourceManager` used by this AnalysisEngine.
      Specified by:
        `getResourceManager` in interface `Resource`
      Returns:
        this AnalysisEngine's ResourceManager

    - #### reconfigure

          void reconfigure()
                    throws ResourceConfigurationException

      Reconfigures this Resource using the most current parameter settings. Calls to `ConfigurableResource.setConfigParameterValue(String,String,Object)` do not take effect until this method is called.

      If this is an aggregate Analysis Engine, configuration parameter settings will be "pushed down" to delegate Analysis Engines that also declare those parameters. All annotators will be informed of the change by a call to their `BaseAnnotator.reconfigure()` methods.

      Specified by:
        `reconfigure` in interface `ConfigurableResource`
      Throws:
        `ResourceConfigurationException` - if the configuration is not valid

    - #### getLogger

          Logger getLogger()

      Gets the Logger that this Analysis Engine is currently using.
      Specified by:
        `getLogger` in interface `Resource`
      Returns:
        this AnalysisEngine's logger

    - #### setLogger

          void setLogger(Logger aLogger)

      Sets the Logger that this Analysis Engine will use. If this method is not called, the default logger (`UIMAFramework.getLogger()`) will be used.
      Specified by:
        `setLogger` in interface `Resource`
      Parameters:
        `aLogger` - the logger for this Analysis Engine to use

    - #### getFeatureNamesForType

          String[] getFeatureNamesForType(String aTypeName)

      Gets the names of the features that are defined on one of the CAS types that this AE inputs or outputs. When a AE's capabilities are declared with `allAnnotatorFeatures == true`, this method can be used to determine all of the feature names.
      Parameters:
        `aTypeName` - type for which to get features
      Returns:
        an array of feature names. If `aTypeName` is not defined, `null` will be returned.

    - #### getPerformanceTuningSettings

          Properties getPerformanceTuningSettings()

      Gets the performance tuning settings in effect for this Analysis Engine.
      Returns:
        performance tuning settings

    - #### setResultSpecification

          void setResultSpecification(ResultSpecification aResultSpec)

      Sets the list of output types and features that the application wants this AnalysisEngine to produce. This is only a guideline. Annotators may use this information to avoid doing unnecessary work, but they are not required to do so.
      Parameters:
        `aResultSpec` - specifies the list of output types and features that the application is interested in.

    - #### getManagementInterface

          AnalysisEngineManagement getManagementInterface()

      Gets an object that can be used to do monitoring or management of this AnalysisEngine.
      Returns:
        an object exposing a management interface to this AE

Copyright © 2006–2017 The Apache Software Foundation. All rights reserved.