org.apache.uima.resource

## Interface ExternalResourceDescription

- All Superinterfaces:
    Cloneable, MetaDataObject, Serializable, XMLizable

      public interface ExternalResourceDescription
      extends MetaDataObject

  An `ExternalResourceDescription` object describes a resource that is loaded in the `ResourceManager` and may be shared between components. This object has four properties:
  - A name, used to identify the resource.
  - A textual description of the resource.
  - A `ResourceSpecifier` that describes how to create the resource (for simple data resources this will be a `FileResourceSpecifier` that contains a URL to the data file.
  - The name of a Java class that implements the specified interface and which also implements `SharedResourceObject`.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static ExternalResourceDescription[]` | `EMPTY_EXTERNAL_RESORUCE_DESCRIPTIONS`

  - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `String` | `getDescription()` Retrieves the textual description of the resource.
    `String` | `getImplementationName()` Retrieves the name of the Java class to be instantiated from the resource data.
    `String` | `getName()` Retrieves the name by which the resource is identified.
    `ResourceSpecifier` | `getResourceSpecifier()` Retrieves the `ResourceSpecifier` that describes how to create the resource.
    `void` | `setDescription(String aDescription)` Retrieves the textual description of the resource.
    `void` | `setImplementationName(String aName)` Sets the name of the Java class to be instantiated from the resource data.
    `void` | `setName(String aName)` Sets the name by which the resource is identified.
    `void` | `setResourceSpecifier(ResourceSpecifier aSpecifier)` Sets the `ResourceSpecifier` that describes how to create the resource.

    - ### Methods inherited from interface org.apache.uima.resource.metadata.MetaDataObject

      `clone, equals, getAttributeValue, getSourceUrl, getSourceUrlString, isModifiable, listAttributes, setAttributeValue, setSourceUrl`

    - ### Methods inherited from interface org.apache.uima.util.XMLizable

      `buildFromXMLElement, buildFromXMLElement, toXML, toXML, toXML, toXML`

- - ### Field Detail

    - #### EMPTY_EXTERNAL_RESORUCE_DESCRIPTIONS

          static final ExternalResourceDescription[] EMPTY_EXTERNAL_RESORUCE_DESCRIPTIONS

  - ### Method Detail

    - #### getName

          String getName()

      Retrieves the name by which the resource is identified.
      Returns:
        the name of this resource.

    - #### setName

          void setName(String aName)

      Sets the name by which the resource is identified.
      Parameters:
        `aName` - the name of this resource.

    - #### getDescription

          String getDescription()

      Retrieves the textual description of the resource.
      Returns:
        the textual description of the resource.

    - #### setDescription

          void setDescription(String aDescription)

      Retrieves the textual description of the resource.
      Parameters:
        `aDescription` - the textual description of the resource.

    - #### getResourceSpecifier

          ResourceSpecifier getResourceSpecifier()

      Retrieves the `ResourceSpecifier` that describes how to create the resource.
      Returns:
        the `ResourceSpecifier` for this external resource

    - #### setResourceSpecifier

          void setResourceSpecifier(ResourceSpecifier aSpecifier)

      Sets the `ResourceSpecifier` that describes how to create the resource.
      Parameters:
        `aSpecifier` - the `ResourceSpecifier` for this external resource
      Throws:
        `UIMA_UnsupportedOperationException` - if this object is not modifiable

    - #### getImplementationName

          String getImplementationName()

      Retrieves the name of the Java class to be instantiated from the resource data. This must extend `SharedResourceObject` as well as the interface specified by `ExternalResourceDependency.getInterfaceName()`.
      Returns:
        the name of the Java class implementing the resource access

    - #### setImplementationName

          void setImplementationName(String aName)

      Sets the name of the Java class to be instantiated from the resource data. This must extend `SharedResourceObject` as well as the interface specified by `ExternalResourceDependency.getInterfaceName()`.
      Parameters:
        `aName` - the name of the Java class implementing the resource access
      Throws:
        `UIMA_UnsupportedOperationException` - if this object is not modifiable

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