org.apache.uima.analysis_engine.service.impl

## Class AnalysisEngineServiceAdapter

- java.lang.Object
- - org.apache.uima.resource.Resource_ImplBase
  - - org.apache.uima.resource.ConfigurableResource_ImplBase
    - - org.apache.uima.analysis_engine.impl.AnalysisEngineImplBase
      - - org.apache.uima.analysis_engine.service.impl.AnalysisEngineServiceAdapter

- All Implemented Interfaces:
    AnalysisEngine, TextAnalysisEngine, CasObjectProcessor, CasProcessor, CasConsumer, ConfigurableResource, Resource

      public abstract class AnalysisEngineServiceAdapter
      extends AnalysisEngineImplBase
      implements TextAnalysisEngine, CasConsumer

  Base class for analysis engine service adapters. Implements the `AnalysisEngine` interface by communicating with an Analysis Engine service. This insulates the application from having to know whether it is calling a local AnalysisEngine or a remote service.

  Subclasses must provide an implementation of the `AnalysisEngineImplBase.initialize(ResourceSpecifier,Map)` method, which must create an `AnalysisEngineServiceStub` object that can communicate with the remote service. The stub must be passed to the `setStub(AnalysisEngineServiceStub)` method of this class.

- - ### Field Summary

    - ### Fields inherited from class org.apache.uima.analysis_engine.impl.AnalysisEngineImplBase

      `LOG_RESOURCE_BUNDLE, PARAM_VERIFICATION_MODE`

    - ### Fields inherited from interface org.apache.uima.analysis_engine.AnalysisEngine

      `PARAM_CONFIG_PARAM_SETTINGS, PARAM_MBEAN_NAME_PREFIX, PARAM_MBEAN_SERVER, PARAM_NUM_SIMULTANEOUS_REQUESTS, PARAM_RESOURCE_MANAGER, PARAM_TIMEOUT_PERIOD`

    - ### 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`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `AnalysisEngineServiceAdapter()`

  - ### Method Summary

    All Methods Instance Methods Concrete 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.
    `void` | `destroy()` Releases all resources held by this `Resource`.
    `Object` | `getConfigParameterValue(String aParamName)` Looks up the value of a configuration parameter.
    `Object` | `getConfigParameterValue(String aGroupName, String aParamName)` Looks up the value of a configuration parameter in a group.
    `ResourceMetaData` | `getMetaData()` Gets the metadata that describes this `Resource`.
    `protected String` | `getResourceName()` Gets the name of this resource, for use in logging and trace messages.
    `protected AnalysisEngineServiceStub` | `getStub()` Gets the stub to be used to communicate with the remote service.
    `CasIterator` | `processAndOutputNewCASes(CAS aCAS)` Processes a CAS, possibly producing multiple CASes as a result.
    `void` | `reconfigure()` Instructs this Resource to re-read its configuration parameter settings.
    `void` | `setConfigParameterValue(String aParamName, Object aValue)` Sets the value of a configuration parameter.
    `void` | `setConfigParameterValue(String aGroupName, String aParamName, Object aValue)` Sets the value of a configuration parameter in a group.
    `protected void` | `setStub(AnalysisEngineServiceStub aStub)` Sets the stub to be used to communicate with the remote service.

    - ### Methods inherited from class org.apache.uima.analysis_engine.impl.AnalysisEngineImplBase

      `batchProcessComplete, buildProcessTraceFromMBeanStats, buildProcessTraceFromMBeanStats, collectionProcessComplete, createResultSpecification, createResultSpecification, enterBatchProcessComplete, enterCollectionProcessComplete, enterProcess, exitBatchProcessComplete, exitCollectionProcessComplete, exitProcess, finalize, getAnalysisEngineMetaData, getCurrentConfigParameterSettings, getFeatureNamesForType, getManagementInterface, getMBean, getMBeanNamePrefix, getMBeanServer, getPerformanceTuningSettings, getProcessingResourceMetaData, initialize, isProcessTraceEnabled, isReadOnly, isStateless, newCAS, newJCas, normalizeIsoLangCodes, process, process, process, process, process, process, process, processAndOutputNewCASes, processCas, processCas, resetResultSpecificationToDefault, setMetaData, setPerformanceTuningSettings, setResultSpecification, typeSystemInit`

    - ### Methods inherited from class org.apache.uima.resource.Resource_ImplBase

      `getCasManager, getLogger, getRelativePathResolver, getResourceManager, getUimaContext, getUimaContextAdmin, setLogger`

    - ### Methods inherited from class java.lang.Object

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

    - ### Methods inherited from interface org.apache.uima.analysis_engine.AnalysisEngine

      `createResultSpecification, createResultSpecification, getAnalysisEngineMetaData, getFeatureNamesForType, getLogger, getManagementInterface, getPerformanceTuningSettings, getResourceManager, initialize, newCAS, newJCas, process, process, process, process, process, process, process, processAndOutputNewCASes, setLogger, setResultSpecification`

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

      `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`

    - ### Methods inherited from interface org.apache.uima.collection.CasConsumer

      `isReadOnly`

- - ### Constructor Detail

    - #### AnalysisEngineServiceAdapter

          public AnalysisEngineServiceAdapter()

  - ### Method Detail

    - #### setStub

          protected void setStub(AnalysisEngineServiceStub aStub)

      Sets the stub to be used to communicate with the remote service. Subclasses must call this from their `initialize` method.
      Parameters:
        `aStub` - the stub for the remote service

    - #### getStub

          protected AnalysisEngineServiceStub getStub()

      Gets the stub to be used to communicate with the remote service.
      Returns:
        the stub for the remote service

    - #### getMetaData

          public ResourceMetaData getMetaData()

      Description copied from interface: `Resource`
      Gets the metadata that describes this `Resource`.
      Specified by:
        `getMetaData` in interface `Resource`
      Overrides:
        `getMetaData` in class `Resource_ImplBase`
      Returns:
        an object containing all metadata for this resource.
      See Also:
        `Resource.getMetaData()`

    - #### destroy

          public void destroy()

      Description copied from interface: `Resource`
      Releases all resources held by this `Resource`.
      Specified by:
        `destroy` in interface `Resource`
      Overrides:
        `destroy` in class `Resource_ImplBase`
      See Also:
        `Resource.destroy()`

    - #### processAndOutputNewCASes

          public CasIterator processAndOutputNewCASes(CAS aCAS)
                                               throws AnalysisEngineProcessException

      Description copied from interface: `AnalysisEngine`
      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.

      Specified by:
        `processAndOutputNewCASes` in interface `AnalysisEngine`
      Overrides:
        `processAndOutputNewCASes` in class `AnalysisEngineImplBase`
      Parameters:
        `aCAS` - the CAS to be processed
      Returns:
        an object for iterating through any output CASes
      Throws:
        `AnalysisEngineProcessException` - if a failure occurs during processing

    - #### reconfigure

          public void reconfigure()
                           throws ResourceConfigurationException

      Description copied from interface: `ConfigurableResource`
      Instructs this Resource to re-read its configuration parameter settings.
      Specified by:
        `reconfigure` in interface `AnalysisEngine`
      Specified by:
        `reconfigure` in interface `ConfigurableResource`
      Overrides:
        `reconfigure` in class `ConfigurableResource_ImplBase`
      Throws:
        `ResourceConfigurationException` - if the configuration is not valid
      See Also:
        `ConfigurableResource.reconfigure()`

    - #### getConfigParameterValue

          public Object getConfigParameterValue(String aGroupName,
                                                String aParamName)

      Description copied from interface: `ConfigurableResource`
      Looks up the value of a configuration parameter in a group. If the parameter has no value assigned within the group, fallback strategies will be followed.

      This method returns `null` if the parameter is optional and has not been assigned a value. (For mandatory parameters, an exception is thrown during initialization if no value has been assigned.) This method also returns `null` if there is no declared configuration parameter with the specified name.

      Specified by:
        `getConfigParameterValue` in interface `ConfigurableResource`
      Overrides:
        `getConfigParameterValue` in class `ConfigurableResource_ImplBase`
      Parameters:
        `aGroupName` - the name of a configuration group. If the group name is `null`, this method will return the same value as `getParameterValue(String)`.
        `aParamName` - the name of a parameter in the group
      Returns:
        the value of the parameter in group `aGroupName` with name `aParamName`,,`null` is either the parameter does not exist or it has not been assigned a value.
      See Also:
        `ConfigurableResource.getConfigParameterValue(java.lang.String, java.lang.String)`

    - #### getConfigParameterValue

          public Object getConfigParameterValue(String aParamName)

      Description copied from interface: `ConfigurableResource`
      Looks up the value of a configuration parameter. This method will only return the value of a parameter that is not defined in any group.

      This method returns `null` if the parameter is optional and has not been assigned a value. (For mandatory parameters, an exception is thrown during initialization if no value has been assigned.) This method also returns `null` if there is no declared configuration parameter with the specified name.

      Specified by:
        `getConfigParameterValue` in interface `ConfigurableResource`
      Overrides:
        `getConfigParameterValue` in class `ConfigurableResource_ImplBase`
      Parameters:
        `aParamName` - the name of a parameter that is not in any group
      Returns:
        the value of the parameter with name `aParamName`, `null` is either the parameter does not exist or it has not been assigned a value.
      See Also:
        `ConfigurableResource.getConfigParameterValue(java.lang.String)`

    - #### setConfigParameterValue

          public void setConfigParameterValue(String aParamName,
                                              Object aValue)

      Description copied from interface: `ConfigurableResource`
      Sets the value of a configuration parameter. This only works for a parameter that is not defined in any group. Note that there is no guarantee that the change will take effect until `ConfigurableResource.reconfigure()` is called.
      Specified by:
        `setConfigParameterValue` in interface `ConfigurableResource`
      Overrides:
        `setConfigParameterValue` in class `ConfigurableResource_ImplBase`
      Parameters:
        `aParamName` - the name of a parameter that is not in any group
        `aValue` - the value to assign to the parameter
      See Also:
        `ConfigurableResource.setConfigParameterValue(java.lang.String, java.lang.Object)`

    - #### setConfigParameterValue

          public void setConfigParameterValue(String aGroupName,
                                              String aParamName,
                                              Object aValue)

      Description copied from interface: `ConfigurableResource`
      Sets the value of a configuration parameter in a group. Note that there is no guarantee that the change will take effect until `ConfigurableResource.reconfigure()` is called.
      Specified by:
        `setConfigParameterValue` in interface `ConfigurableResource`
      Overrides:
        `setConfigParameterValue` in class `ConfigurableResource_ImplBase`
      Parameters:
        `aGroupName` - the name of a configuration group. If this parameter is `null`, this method will have the same effect as `setParameterValue(String,Object)`.
        `aParamName` - the name of a parameter in the group
        `aValue` - the value to assign to the parameter.
      See Also:
        `ConfigurableResource.setConfigParameterValue(java.lang.String, java.lang.String, java.lang.Object)`

    - #### batchProcessComplete

          public void batchProcessComplete()
                                    throws AnalysisEngineProcessException

      Description copied from interface: `AnalysisEngine`
      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.
      Specified by:
        `batchProcessComplete` in interface `AnalysisEngine`
      Overrides:
        `batchProcessComplete` in class `AnalysisEngineImplBase`
      Throws:
        `AnalysisEngineProcessException` - if an exception occurs during processing

    - #### collectionProcessComplete

          public void collectionProcessComplete()
                                         throws AnalysisEngineProcessException

      Description copied from interface: `AnalysisEngine`
      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.

      Specified by:
        `collectionProcessComplete` in interface `AnalysisEngine`
      Overrides:
        `collectionProcessComplete` in class `AnalysisEngineImplBase`
      Throws:
        `AnalysisEngineProcessException` - if an exception occurs during processing

    - #### getResourceName

          protected String getResourceName()

      Gets the name of this resource, for use in logging and trace messages.
      Returns:
        the name of this resource

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