Package weka.knowledgeflow

Class JSONFlowLoader

  • All Implemented Interfaces:
    FlowLoader
    public class JSONFlowLoader
extends java.lang.Object
implements FlowLoader
    Flow loader that wraps the routines in JSONFlowUtils
    Version:
    $Revision: $
    Author:
    Mark Hall (mhall{[at]}pentaho{[dot]}com)

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static java.lang.String EXTENSION
      The file exetension for JSON-based flows

    • Constructor Summary

      Constructors 
      Constructor Description
      JSONFlowLoader()  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.lang.String getFlowFileExtension()
      Get the file extension handled by this loader
      java.lang.String getFlowFileExtensionDescription()
      Get the description of the file format handled by this loader
      Flow readFlow​(java.io.File flowFile)
      Read the flow from the supplied file
      Flow readFlow​(java.io.InputStream is)
      Read the flow from the supplied input stream
      Flow readFlow​(java.io.Reader r)
      Read the flow from the supplied reader
      void setLog​(Logger log)
      Set a log to use

      • Methods inherited from class java.lang.Object

        equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • EXTENSION

        public static final java.lang.String EXTENSION
        The file exetension for JSON-based flows
        See Also:
        Constant Field Values

    • Constructor Detail

      • JSONFlowLoader

        public JSONFlowLoader()

    • Method Detail

      • setLog

        public void setLog​(Logger log)
        Set a log to use
        Specified by:
        setLog in interface FlowLoader
        Parameters:
        log - log to use

      • getFlowFileExtension

        public java.lang.String getFlowFileExtension()
        Get the file extension handled by this loader
        Specified by:
        getFlowFileExtension in interface FlowLoader
        Returns:
        the file extension

      • getFlowFileExtensionDescription

        public java.lang.String getFlowFileExtensionDescription()
        Get the description of the file format handled by this loader
        Specified by:
        getFlowFileExtensionDescription in interface FlowLoader
        Returns:
        the description of the file format handled

      • readFlow

        public Flow readFlow​(java.io.File flowFile)
              throws WekaException
        Read the flow from the supplied file
        Specified by:
        readFlow in interface FlowLoader
        Parameters:
        flowFile - the file to load from
        Returns:
        the Flow read
        Throws:
        WekaException - if a problem occurs

      • readFlow

        public Flow readFlow​(java.io.InputStream is)
              throws WekaException
        Read the flow from the supplied input stream
        Specified by:
        readFlow in interface FlowLoader
        Parameters:
        is - the input stream to load from
        Returns:
        the Flow read
        Throws:
        WekaException

      • readFlow

        public Flow readFlow​(java.io.Reader r)
              throws WekaException
        Read the flow from the supplied reader
        Specified by:
        readFlow in interface FlowLoader
        Parameters:
        r - the reader to load from
        Returns:
        the Flow read
        Throws:
        WekaException - if a problem occurs