Class AbstractListCrawler<T>

    • Constructor Detail

      • AbstractListCrawler

        @SafeVarargs
        protected AbstractListCrawler​(T... inputs)
        Build a data classpath crawler.
        Parameters:
        inputs - list of inputs (may be empty if addInput is called later)
    • Method Detail

      • addInput

        public void addInput​(T input)
        Add an input to the supported list.
        Parameters:
        input - input to add
      • getInputs

        public List<T> getInputs()
        Get the list of inputs supported by the instance.
        Returns:
        unmodifiable view of the list of inputs supported by the instance
      • getCompleteName

        protected abstract String getCompleteName​(T input)
        Get the complete name of a input.
        Parameters:
        input - input to consider
        Returns:
        complete name of the input
      • getBaseName

        protected abstract String getBaseName​(T input)
        Get the base name of an input.
        Parameters:
        input - input to consider
        Returns:
        base name of the input
      • getZipJarCrawler

        protected abstract ZipJarCrawler getZipJarCrawler​(T input)
        Get a zip/jar crawler for an input.
        Parameters:
        input - input to consider
        Returns:
        zip/jar crawler for an input
      • getStream

        protected abstract InputStream getStream​(T input)
                                          throws IOException
        Get the stream to read from an input.
        Parameters:
        input - input to read from
        Returns:
        stream to read the content of the input
        Throws:
        IOException - if the input cannot be opened for reading
      • feed

        public boolean feed​(Pattern supported,
                            DataLoader visitor,
                            DataProvidersManager manager)
        Feed a data file loader by browsing the data collection.

        The method crawls all files referenced in the instance (for example all files in a directories tree) and for each file supported by the file loader it asks the file loader to load it.

        If the method completes without exception, then the data loader is considered to have been fed successfully and the top level data providers manager will return immediately without attempting to use the next configured providers.

        If the method completes abruptly with an exception, then the top level data providers manager will try to use the next configured providers, in case another one can feed the data loader.

        Specified by:
        feed in interface DataProvider
        Parameters:
        supported - pattern for file names supported by the visitor
        visitor - data file visitor to use
        manager - with the filters to apply to the resources.
        Returns:
        true if some data has been loaded