Package net.sf.saxon.tree.iter


package net.sf.saxon.tree.iter

This package defines implementations and subinterfaces of the interface SequenceIterator, which is used to iterate over an XDM sequence.

The subinterfaces mostly represent iterators with additional capability: for example a LastPositionFinder can determine the number of items in the sequence without reading to the end; a GroundedIterator can deliver the original sequence as a list in memory; a LookaheadIterator is capable of one-item look-ahead. Note that just because a class implements such an interface does not mean it necessarily has this capability; it is necessary to check the properties of the specific iterator before assuming this.

Michael H. Kay
Saxonica Limited
28 November 2011

  • Class
    Description
    AdjacentTextNodeMergingIterator is an iterator that eliminates zero-length text nodes and merges adjacent text nodes from the underlying iterator
    ArrayIterator<T extends Item>
    ArrayIterator is used to enumerate items held in an array.
    AtomizingIterator returns the atomization of an underlying sequence supplied as an iterator.
    A SequenceIterator is used to iterate over a sequence.
    A SequenceIterator is used to iterate over a sequence.
    This class wraps any SequenceIterator as an AxisIterator.
    An AxisIterator over an empty sequence
    EmptyIterator<T extends Item>
    EmptyIterator: an iterator over an empty sequence.
    This interface is an extension to the SequenceIterator interface; it represents a SequenceIterator that is based on an in-memory representation of a sequence, and that is therefore capable of returned a SequenceValue containing all the items in the sequence.
    An iterator that returns the same items as its base iterator, checking to see that they are either all nodes, or all non-nodes; if they are all nodes, it delivers them in document order.
    A SequenceIterator that wraps a Java Iterator.
    ListIterator<T extends Item>
    Class ListIterator, iterates over a sequence of items held in a Java List
    A SequenceIterator is used to iterate over a sequence.
    This class wraps any sequence iterator, turning it into a lookahead iterator, by looking ahead one item
    An AxisIterator that wraps a Java Iterator.
    Interface to a function that wraps nodes from an external object model in a Saxon NodeInfo representation
    An iterator over nodes, that prepends a given node to the nodes returned by another iterator.
    ReverseArrayIterator is used to enumerate items held in an array in reverse order.
    A ReversibleIterator is an interface implemented by any SequenceIterator that is able to deliver items in reverse order (or to supply another iterator that can do so).
    SingletonIterator: an iterator over a sequence of zero or one values
    SingletonIterator: an iterator over a sequence of zero or one values
    A SequenceIterator is used to iterate over a sequence.
    Class UnparsedTextIterator, iterates over a file line by line
    AtomizingIterator returns the atomization of an underlying sequence supplied as an iterator.