Class ResourceManager_impl

    • Field Detail

      • LOG_RESOURCE_BUNDLE

        protected static final String LOG_RESOURCE_BUNDLE
        resource bundle for log messages
        See Also:
        Constant Field Values
      • EMPTY_RESOURCE_CLASS

        protected static final Class<Resource> EMPTY_RESOURCE_CLASS
      • mResourceMap

        protected final Map<String,​Object> mResourceMap
        Map from qualified key names (declared in resource dependency XML) to either DataResource objects or SharedResourceObjects that impl Resource. This map is many to one (multiple keys may refer to the same Resource object) Can't be concurrentMap because it (currently) depends on storing nulls Keeping the Map's 2nd argument as Object, although it could be Resource, for backwards compatibility
      • mInternalResourceRegistrationMap

        protected final Map<String,​ResourceManager_impl.ResourceRegistration> mInternalResourceRegistrationMap
        Internal map from resource names (declared in resource declaration XML) to ResourceRegistration objects. Uses: for detecting if multiple declarations are made for the same resource name .values() for list of all resources that have been registered This is a one-to-one map.
      • mParameterizedResourceImplClassMap

        protected final Map<String,​Class<?>> mParameterizedResourceImplClassMap
        Map from String keys to Class objects. For ParameterizedResources only, stores the implementation class (not a Resource) corresponding to each resource name. These class objects may or may not be Resource instances. They may be arbitrary classes, except that they must implement SharedResourceObject. This is a many to one map; many keys may refer to the same class key = aQualifiedContextName + the key name in an external resource binding
      • mInternalParameterizedResourceImplClassMap

        protected final Map<String,​Class<?>> mInternalParameterizedResourceImplClassMap
        Internal map from resource names (declared in resource declaration XML) to Class objects for parameterized Resource. These class objects may or may not be Resource instances. They may be arbitrary classes, except that they must implement SharedResourceObject. These are "customized" when referenced, by parameter strings (such as language, for a Dictionary resource). Used internally during resource initialization. key = external resource declared name.
      • mParameterizedResourceInstanceMap

        protected final Map<List<Object>,​Object> mParameterizedResourceInstanceMap
        Map from ParameterizedResourceKey to SharedResourceObject or DataResource instances. Note: SharedResourceObjects are not "Resource" instances, but rather arbitrary Java classes that are the "implementations" of Resources. The only requirement on these Java classes is that they implement SharedResourceObject interface. This map is for ParameterizedResources only, and stores the SharedResourceObjects or DataResource objects that have already been instantiated and loaded.
      • mCasManager

        protected volatile CasManager mCasManager
        CasManager - manages creation and pooling of CASes.
    • Constructor Detail

      • ResourceManager_impl

        public ResourceManager_impl()
        Creates a new ResourceManager_impl.
      • ResourceManager_impl

        public ResourceManager_impl​(ClassLoader aClassLoader)
        Creates a new ResourceManager_impl with a custom ClassLoader to use for locating resources.
        Parameters:
        aClassLoader - -
    • Method Detail

      • setExtensionClassPath

        public void setExtensionClassPath​(UIMAClassLoader uimaCL,
                                          boolean resolveResource)
        Support reusing UIMA Class Loader instances to speed up things including the Component Description Editor when obtaining info from CustomResourceSpecifiers https://issues.apache.org/jira/browse/UIMA-1722
        Parameters:
        uimaCL - -
        resolveResource - -
      • getDataPath

        public String getDataPath()
        Description copied from interface: ResourceManager
        Gets the data path used to resolve relative paths. More than one directory may be specified by separating them with the System path.separator character (; on windows, : on UNIX).
        Specified by:
        getDataPath in interface ResourceManager
        Returns:
        the data path
        See Also:
        ResourceManager.getDataPath()
      • resolveRelativePath

        public URL resolveRelativePath​(String aRelativePath)
                                throws MalformedURLException
        Description copied from interface: ResourceManager
        Attempts to resolve a relative path to an absolute path using the same mechanism that the ResourceManager uses to find resources -- a lookup in the datapath followed by a lookup in the classpath.
        Specified by:
        resolveRelativePath in interface ResourceManager
        Parameters:
        aRelativePath - a relative URL or file path
        Returns:
        the absolute URL of an actual file in the datapath or classpath, null if no file matching aRelativePath is found.
        Throws:
        MalformedURLException - if the path cannot be converted to a URL
      • getResource

        public Object getResource​(String aName,
                                  String[] aParams)
                           throws ResourceAccessException
        Description copied from interface: ResourceManager
        Returns one of two kinds of objects (or null): - an instance of the implementation object for a resource, that has been loaded with a DataResource resource produced by the resource given the aParms - (if there is no implementation defined for this resource) returns an instance of the DataResource, itself, produced by the resource given the aParms An example of a parameterized Resource is a dictionary whose data depend on a specified language identifier. If the implementation object class exists, but no instance has been created (yet) for the particular data resource corresponding to the parameters, then this method will create and register a new instance and call its load() api using the data resource corresponding to the parameters, and return that.
        Specified by:
        getResource in interface ResourceManager
        Parameters:
        aName - the name of the parameterized resource to retrieve
        aParams - the parameters determining which particular instance is returned and specifying a particular DataResource instance to use in initializing the implementation of the resource (if there is an implementation). If there is no implementation, the DataResource instance produced from the named Resource given these parameters is returned instead.
        Returns:
        one of two kinds of objects (or null): an instance of the requested implementation of the named resource where that instance has been initialized by calling its load method with the DataResource instance produced from the Resource given aParams, or, (if the named resource has no implementation) the DataResource instance corresponding to the named Resource, given aParams, or if no resource with this name exists, null.
        Throws:
        ResourceAccessException - if there is a resource registered under aName but it could not be instantiated for the specified parameters.
        See Also:
        ResourceManager.getResource(java.lang.String, java.lang.String[])
      • getResourceAsStream

        public InputStream getResourceAsStream​(String aKey,
                                               String[] aParams)
                                        throws ResourceAccessException
        Description copied from interface: ResourceManager
        Retrieves an InputStream for reading from the named resource. This can be used, for example, to read configuration or authority files. This version of this method takes an array of parameters used to further identify the resource. This can be used, for example, with resources that vary depending on the language of the document being analyzed.
        Specified by:
        getResourceAsStream in interface ResourceManager
        Parameters:
        aKey - the key by which the resource is identified. If this key was declared in the <externalResourceDependencies> section of the annotator's descriptor, then the resource manager is used to locate the resource. If not, the key is assumed to be the resource name and is looked up in the data path or in the class path using ClassLoader.getResource(String).
        aParams - parameters used to further identify the resource
        Returns:
        an InputStream for reading from the named resource, null if the named resource could not be found. It is the caller's responsibility to close this stream once it is no longer needed.
        Throws:
        ResourceAccessException - if a failure occurs in accessing the resource
      • getResourceAsStream

        public InputStream getResourceAsStream​(String aKey)
                                        throws ResourceAccessException
        Description copied from interface: ResourceManager
        Retrieves an InputStream for reading from the named resource. This can be used, for example, to read configuration or authority files.
        Specified by:
        getResourceAsStream in interface ResourceManager
        Parameters:
        aKey - the key by which the resource is identified. If this key was declared in the <externalResourceDependencies> section of the annotator's descriptor, then the resource manager is used to locate the resource. If not, the key is assumed to be the resource name and is looked up in the data path or in the class path using ClassLoader.getResource(String).
        Returns:
        an InputStream for reading from the named resource, null if the named resource could not be found. It is the caller's responsibility to close this stream once it is no longer needed.
        Throws:
        ResourceAccessException - if a failure occurs in accessing the resource
      • getResourceURL

        public URL getResourceURL​(String aKey,
                                  String[] aParams)
                           throws ResourceAccessException
        Description copied from interface: ResourceManager
        Retrieves the URL to the named resource. This can be used, for example, to locate configuration or authority files. This version of this method takes an array of parameters used to further identify the resource. This can be used, for example, with resources that vary depending on the language of the document being analyzed.
        Specified by:
        getResourceURL in interface ResourceManager
        Parameters:
        aKey - the key by which the resource is identified. If this key was declared in the <externalResourceDependencies> section of the annotator's descriptor, then the resource manager is used to locate the resource. If not, the key is assumed to be the resource name and is looked up in the data path or in the class path using ClassLoader.getResource(String).
        aParams - parameters used to further identify the resource
        Returns:
        the URL at which the named resource is located, null if the named resource could not be found.
        Throws:
        ResourceAccessException - if a failure occurs in accessing the resource
      • getResourceURL

        public URL getResourceURL​(String aKey)
                           throws ResourceAccessException
        Description copied from interface: ResourceManager
        Retrieves the URL to the named resource. This can be used, for example, to locate configuration or authority files.
        Specified by:
        getResourceURL in interface ResourceManager
        Parameters:
        aKey - the key by which the resource is identified. If this key was declared in the <externalResourceDependencies> section of the descriptor, then the resource manager is used to locate the resource. If not, the key is assumed to be the resource name and is looked up in the data path or in the class path using ClassLoader.getResource(String).
        Returns:
        the URL at which the named resource is located, null if the named resource could not be found.
        Throws:
        ResourceAccessException - if a failure occurs in accessing the resource
      • initializeExternalResources

        public void initializeExternalResources​(ResourceManagerConfiguration aConfiguration,
                                                String aQualifiedContextName,
                                                Map<String,​Object> aAdditionalParams)
                                         throws ResourceInitializationException
        Description copied from interface: ResourceManager
        Initializes all external resources declared in a ResourceCreationSpecifier. Multi-threading: may be called on multiple threads. Initialization should be done once, on the first call External resources have a Container class representing the resource, which are instances of Resource. This may act as the implementation class, or they may also have a separately specified implementation class, which may or may not implement Resource. As part of the initialization of the Container class, by default, External Resource Bindings are processed to hook them up with defined External Resources, using the default implementation of resolveAndValidateResourceDependencies.
        Specified by:
        initializeExternalResources in interface ResourceManager
        Parameters:
        aConfiguration - the ResourceManagerConfiguration containing resource declarations and bindings
        aQualifiedContextName - qualified name of UimaContext for the component (e.g. analysis engine) that is declaring these external resources
        aAdditionalParams - additional parameters to be passed to resource initialize methods
        Throws:
        ResourceInitializationException - if an initialization failure occurs
      • resolveAndValidateResourceDependencies

        public void resolveAndValidateResourceDependencies​(ExternalResourceDependency[] aDependencies,
                                                           String aQualifiedContextName)
                                                    throws ResourceInitializationException
        Description copied from interface: ResourceManager
        Resolves a component's external resource dependencies (bindings) using this resource manager. The default implementation has special defaulting logic: If a binding specifies a non-existing resource, an attempt is made to interpret the key as a file name, looked up using the current context for relative path resolution. - If successfully found, a FileResourceSpecifier is created using the file and used as the implementing class. If no resource can be found at all, then unless the dependency is marked "optional", an ResourceInitializationException is thrown. Multi-threading: may be called on multiple threads, repeatedly for the same set of resources. Implementations should recognize this and skip repeated resolutions.
        Specified by:
        resolveAndValidateResourceDependencies in interface ResourceManager
        Parameters:
        aDependencies - declarations of a component's dependencies on external resources
        aQualifiedContextName - qualified name of UimaContext for the component (e.g. analysis engine) that is declaring these dependencies
        Throws:
        ResourceInitializationException - if a required dependency is not satisfied
      • setCasManager

        public void setCasManager​(CasManager aCasManager)
        Description copied from interface: ResourceManager
        Sets the CasManager, which manages the creation and pooling of CASes. This method does not normally need to be called by an application. It allows a custom CAS Manager implementation to be substituted for the default one, which may be useful when embedding UIMA in other middleware where a different CAS Manager implementation may be desired.

        This method can only be called once, and must be called before creating any AnalysisEngines that use this ResourceManager. An Exception will be thrown if this method is called twice or is called after ResourceManager.getCasManager() has already been called (which happens during AE initialization).

        Specified by:
        setCasManager in interface ResourceManager
        Parameters:
        aCasManager - CAS Manager instance to plug in
      • getImportCache

        public Map<String,​XMLizable> getImportCache()
        Description copied from interface: ResourceManager
        Gets a cache of imported descriptors, so that the parsed objects can be reused if the same URL is imported more than once.
        Specified by:
        getImportCache in interface ResourceManager
        Returns:
        A map from absolute URL to the XMLizable object that was parsed from that URL
      • destroy

        public void destroy()
        Description copied from interface: ResourceManager
        Frees all resources held by this ResourceManager, and marks the ResourceManager as having been destroyed. A destroyed ResourceManager will throw an exception if an attempt is made to continue using it. Resources managed by a ResourceManager include all of the external shared Resources and a CAS Pool. The Resources managed by this manager will have their destroy() methods called, as part of the execution of this API. The framework does not call this method; it is up to the containing application to decide if and when a ResourceManager instance should be destroyed. This is because the containing application is the only knowledgeable source; for example a single ResourceManager might be used for multiple UIMA Pipelines.
        Specified by:
        destroy in interface ResourceManager
      • getExternalResources

        public List<Object> getExternalResources()
        Specified by:
        getExternalResources in interface ResourceManager
        Returns:
        a List of External Shared Resource instances instantiated by this Resource Manager. For parameterized resources, those which have been asked for (having unique parameter sets) are included.