edu.stanford.nlp.trees
Class SimpleTree

java.lang.Object
  |
  +--java.util.AbstractCollection
        |
        +--edu.stanford.nlp.trees.Tree
              |
              +--edu.stanford.nlp.trees.SimpleTree

All Implemented Interfaces:

Collection, Labeled, Scored

public class SimpleTree

extends Tree

A SimpleTree is a minimal concrete implementation of an unlabeled, unscored Tree. It has a tree structure, but no annotation at nodes.

Constructor Summary

SimpleTree()
Create an empty parse tree.

SimpleTree(Label label)
Create parse tree with given root and null daughters.

SimpleTree(Label label, List daughterTreesList)
Create parse tree with given root and array of daughter trees.

Method Summary

Tree[]	children() Returns an array of children for the current node, or null if it is a leaf.
static TreeFactory	factory() Return a TreeFactory that produces trees of the SimpleTree type.
void	setChildren(Tree[] children) Set the children of this node to be the children given in the array.
TreeFactory	treeFactory() Return a TreeFactory that produces trees of the SimpleTree type.

Methods inherited from class edu.stanford.nlp.trees.Tree

constituents, constituents, deepCopy, deepCopy, depth, firstChild, getChildrenAsList, indentedListPrint, indentedListPrint, isLeaf, isPreTerminal, iterator, label, labels, lastChild, parent, parent, pennPrint, pennPrint, percolateHeads, preTerminalYield, preTerminalYield, prune, prune, score, setChildren, setLabel, setLabels, setScore, size, spliceOut, spliceOut, subTrees, subTrees, taggedYield, taggedYield, toString, toStringBuffer, transform, transform, yield, yield

Methods inherited from class java.util.AbstractCollection

add, addAll, clear, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

equals, hashCode

Constructor Detail

SimpleTree

public SimpleTree()

Create an empty parse tree.

SimpleTree

public SimpleTree(Label label)

Create parse tree with given root and null daughters.

Parameters:

label - root label of new tree to construct. For a SimpleTree this parameter is ignored.

SimpleTree

public SimpleTree(Label label,
                  List daughterTreesList)

Create parse tree with given root and array of daughter trees.

Parameters:

label - root label of tree to construct. For a SimpleTree this parameter is ignored

daughterTreesList - list of daughter trees to construct.

Method Detail

children

public Tree[] children()

Returns an array of children for the current node, or null if it is a leaf.

Specified by:

children in class Tree

Returns:

The children of the node

See Also:

Tree.getChildrenAsList()

setChildren

public void setChildren(Tree[] children)

Description copied from class: Tree

Set the children of this node to be the children given in the array. The children array may be either an array of length 0 or null if there are no children, and other methods in this class work on either representation.

Specified by:

setChildren in class Tree

Parameters:

children - The array of children, each a Tree

See Also:

Tree.setChildren(List)

treeFactory

public TreeFactory treeFactory()

Return a TreeFactory that produces trees of the SimpleTree type. The factory returned is always the same one (a singleton).

Specified by:

treeFactory in class Tree

Returns:

a factory to produce simple (unlabelled) trees

factory

public static TreeFactory factory()

Return a TreeFactory that produces trees of the SimpleTree type. The factory returned is always the same one (a singleton).

Returns:

a factory to produce simple (unlabelled) trees