Package com.mchange.v1.util

Class WrapperUIterator

  • All Implemented Interfaces:
    ClosableResource, UIterator
    public abstract class WrapperUIterator
extends java.lang.Object
implements UIterator
    This implementation does not yet support removes once hasNext() has been called... will add if necessary.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected static java.lang.Object SKIP_TOKEN  

    • Method Summary

      All Methods Instance Methods Abstract Methods Concrete Methods 
      Modifier and Type Method Description
      void close()
      forces the release of any resources that might be associated with this object.
      boolean hasNext()  
      java.lang.Object next()  
      void remove()  
      protected abstract java.lang.Object transformObject​(java.lang.Object o)
      return SKIP_TOKEN to indicate an object should be skipped, i.e., not exposed as part of the iterator.

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • SKIP_TOKEN

        protected static final java.lang.Object SKIP_TOKEN

    • Constructor Detail

      • WrapperUIterator

        public WrapperUIterator​(UIterator inner,
                        boolean supports_remove)

      • WrapperUIterator

        public WrapperUIterator​(UIterator inner)

    • Method Detail

      • hasNext

        public boolean hasNext()
                throws java.lang.Exception
        Specified by:
        hasNext in interface UIterator
        Throws:
        java.lang.Exception

      • next

        public java.lang.Object next()
                      throws java.util.NoSuchElementException,
                             java.lang.Exception
        Specified by:
        next in interface UIterator
        Throws:
        java.util.NoSuchElementException
        java.lang.Exception

      • remove

        public void remove()
            throws java.lang.Exception
        Specified by:
        remove in interface UIterator
        Throws:
        java.lang.Exception

      • close

        public void close()
           throws java.lang.Exception
        Description copied from interface: ClosableResource
        forces the release of any resources that might be associated with this object.
        Specified by:
        close in interface ClosableResource
        Specified by:
        close in interface UIterator
        Throws:
        java.lang.Exception

      • transformObject

        protected abstract java.lang.Object transformObject​(java.lang.Object o)
                                             throws java.lang.Exception
        return SKIP_TOKEN to indicate an object should be skipped, i.e., not exposed as part of the iterator. (we don't use null, because we want to support iterators over null-accepting Collections.)
        Throws:
        java.lang.Exception