Class CsvIterator

  • All Implemented Interfaces:

    public class CsvIterator
    extends java.lang.Object
    implements java.util.Iterator<Instance>
    This iterator, perhaps more properly called a Line Pattern Iterator, reads through a file and returns one instance per line, based on a regular expression.

    If you have data of the form

    [name]  [label]  [data]
    and a Pipe instancePipe, you could read instances using this code:
        InstanceList instances = new InstanceList(instancePipe);
        instances.addThruPipe(new CsvIterator(new FileReader(dataFile),
                                              3, 2, 1)  // (data, target, name) field indices                    
    • Constructor Summary

      Constructor Description
      CsvIterator​( input, java.lang.String lineRegex, int dataGroup, int targetGroup, int uriGroup)  
      CsvIterator​( input, java.util.regex.Pattern lineRegex, int dataGroup, int targetGroup, int uriGroup)  
      CsvIterator​(java.lang.String filename, java.lang.String lineRegex, int dataGroup, int targetGroup, int uriGroup)  
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean hasNext()  
      Instance next()  
      void remove()  
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
      • Methods inherited from interface java.util.Iterator

    • Constructor Detail

      • CsvIterator

        public CsvIterator​( input,
                           java.util.regex.Pattern lineRegex,
                           int dataGroup,
                           int targetGroup,
                           int uriGroup)
      • CsvIterator

        public CsvIterator​( input,
                           java.lang.String lineRegex,
                           int dataGroup,
                           int targetGroup,
                           int uriGroup)
      • CsvIterator

        public CsvIterator​(java.lang.String filename,
                           java.lang.String lineRegex,
                           int dataGroup,
                           int targetGroup,
                           int uriGroup)
    • Method Detail

      • next

        public Instance next()
        Specified by:
        next in interface java.util.Iterator<Instance>
      • hasNext

        public boolean hasNext()
        Specified by:
        hasNext in interface java.util.Iterator<Instance>
      • remove

        public void remove()
        Specified by:
        remove in interface java.util.Iterator<Instance>