Class CachingModuleScriptProviderBase

    • Constructor Detail

      • CachingModuleScriptProviderBase

        protected CachingModuleScriptProviderBase​(ModuleSourceProvider moduleSourceProvider)
        Creates a new module script provider with the specified source.
        Parameters:
        moduleSourceProvider - provider for modules' source code
    • Method Detail

      • getModuleScript

        public ModuleScript getModuleScript​(Context cx,
                                            java.lang.String moduleId,
                                            java.net.URI moduleUri,
                                            java.net.URI baseUri,
                                            Scriptable paths)
                                     throws java.lang.Exception
        Description copied from interface: ModuleScriptProvider
        Returns a module script. It should attempt to load the module script if it is not already available to it, or return an already loaded module script instance if it is available to it.
        Specified by:
        getModuleScript in interface ModuleScriptProvider
        Parameters:
        cx - current context. Can be used to compile module scripts.
        moduleId - the ID of the module. An implementation must only accept an absolute ID, starting with a term.
        moduleUri - the URI of the module. If this is not null, resolution of moduleId is bypassed and the script is directly loaded from moduleUri
        baseUri - the module path base URI from which moduleUri was derived.
        paths - the value of the require() function's "paths" attribute. If the require() function is sandboxed, it will be null, otherwise it will be a JavaScript Array object. It is up to the provider implementation whether and how it wants to honor the contents of the array.
        Returns:
        a module script representing the compiled code of the module. Null should be returned if the script could not found.
        Throws:
        java.lang.Exception - if there was an unrecoverable problem obtaining the script
        java.lang.IllegalArgumentException - if the module ID is syntactically not a valid absolute module identifier.
      • putLoadedModule

        protected abstract void putLoadedModule​(java.lang.String moduleId,
                                                ModuleScript moduleScript,
                                                java.lang.Object validator)
        Store a loaded module script for later retrieval using getLoadedModule(String).
        Parameters:
        moduleId - the ID of the module
        moduleScript - the module script
        validator - the validator for the module's source text entity
      • getConcurrencyLevel

        protected static int getConcurrencyLevel()
        Returns the internal concurrency level utilized by caches in this JVM.
        Returns:
        the internal concurrency level utilized by caches in this JVM.