Class LocalStorage

    • Method Detail

      • openInputFile

        public java.io.InputStream openInputFile​(java.lang.String fileName)
                                          throws java.io.IOException
        Opens an input stream to read from the entry specified by the name parameter. If the named entry cannot be opened for reading then a IOException is thrown.
        Parameters:
        fileName - the storage-dependent name
        Returns:
        an InputStream object
        Throws:
        java.io.IOException - if the specified name is invalid, or an input stream cannot be opened
      • openOutputFile

        public java.io.OutputStream openOutputFile​(java.lang.String fileName)
                                            throws java.io.IOException
        Opens an output stream to write to the entry specified by the name parameter. If the named entry cannot be opened for writing then a IOException is thrown. If the named entry does not exist it can be created. The entry will be recreated if already exists.
        Parameters:
        fileName - the storage-dependent name
        Returns:
        an OutputStream object
        Throws:
        java.io.IOException - if the specified name is invalid, or an output stream cannot be opened
      • openOutputFile

        public java.io.OutputStream openOutputFile​(java.lang.String fileName,
                                                   boolean append)
                                            throws java.io.IOException
        Opens an output stream to write to the entry specified by the name parameter. If the named entry cannot be opened for writing then a IOException is thrown. If the named entry does not exist it can be created. You can decide whether data will be appended via append parameter.
        Parameters:
        fileName - the storage-dependent name
        append - if true, then bytes will be written to the end of the output entry rather than the beginning
        Returns:
        an OutputStream object
        Throws:
        java.io.IOException - if the specified name is invalid, or an output stream cannot be opened
      • deleteFile

        public boolean deleteFile​(java.lang.String fileName)
                           throws java.io.IOException
        Deletes the entry specified by the name parameter.
        Parameters:
        fileName - the storage-dependent name
        Throws:
        java.io.IOException - if the specified name is invalid, or an internal entry cannot be deleted
      • save

        public void save​(java.lang.Object bean,
                         java.lang.String fileName)
                  throws java.io.IOException
        Saves the bean to the local storage
        Parameters:
        bean - the object ot be saved
        fileName - the targen file name
        Throws:
        java.io.IOException
      • load

        public java.lang.Object load​(java.lang.String fileName)
                              throws java.io.IOException
        Loads the been from the local storage
        Parameters:
        fileName - name of the file to be read from
        Returns:
        loaded object
        Throws:
        java.io.IOException
      • getStorageLimit

        public long getStorageLimit()
        Gets the limit of the local storage
        Returns:
        the limit of the local storage
      • setStorageLimit

        public void setStorageLimit​(long storageLimit)
        Sets the limit of the lical storage
        Parameters:
        storageLimit - the limit of the lical storage
      • getDirectory

        public java.io.File getDirectory()
        Returns the directory where the local storage is located
        Returns:
        the directory where the local storage is located
      • setDirectory

        public void setDirectory​(java.io.File directory)
        Sets the location of the local storage
        Parameters:
        directory - the location of the local storage