edu.stanford.nlp.trees
Class SimpleTreeFactory

java.lang.Object
  edu.stanford.nlp.trees.SimpleTreeFactory

All Implemented Interfaces:

TreeFactory

Direct Known Subclasses:

LabeledScoredTreeFactory

public class SimpleTreeFactory
extends Object
implements TreeFactory

A SimpleTreeFactory acts as a factory for creating objects of class SimpleTree.

NB: A SimpleTree stores tree geometries but no node labels. Make sure this is what you really want.

Author:

Christopher Manning

Constructor Summary

SimpleTreeFactory()
Creates a new TreeFactory.

SimpleTreeFactory(LabelFactory lf)
Creates a new TreeFactory.

Method Summary

Tree	newLeaf(Label word) Create a new tree leaf node, with the given label.
Tree	newLeaf(String word) Create a new tree leaf node, where the label is formed from the String passed in.
Tree	newTreeNode(Label parentLabel, List children) Create a new tree nonleaf node, with the given label.
Tree	newTreeNode(String parent, List children) Create a new tree nonleaf node, where the label is formed from the String passed in.

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleTreeFactory

public SimpleTreeFactory()

Creates a new TreeFactory. A SimpleTree stores no Label, so no LabelFactory is built.

SimpleTreeFactory

public SimpleTreeFactory(LabelFactory lf)

Creates a new TreeFactory. A SimpleTree stores no Label, so the LabelFactory argument is ignored.

Parameters:

lf - This argument is ignored

Method Detail

newLeaf

public Tree newLeaf(String word)

Description copied from interface: TreeFactory

Create a new tree leaf node, where the label is formed from the String passed in.

Specified by:

newLeaf in interface TreeFactory

Parameters:

word - The word that will go into the tree label.

Returns:

The new leaf

newLeaf

public Tree newLeaf(Label word)

Description copied from interface: TreeFactory

Create a new tree leaf node, with the given label.

Specified by:

newLeaf in interface TreeFactory

Parameters:

word - The label for the leaf node

Returns:

The new leaf

newTreeNode

public Tree newTreeNode(String parent,
                        List children)

Description copied from interface: TreeFactory

Create a new tree nonleaf node, where the label is formed from the String passed in.

Specified by:

newTreeNode in interface TreeFactory

Parameters:

parent - The string that will go into the parent tree label.

children - The list of daughters of this tree. The children may be a (possibly empty) List of children or null

Returns:

The new interior tree node

newTreeNode

public Tree newTreeNode(Label parentLabel,
                        List children)

Description copied from interface: TreeFactory

Create a new tree nonleaf node, with the given label.

Specified by:

newTreeNode in interface TreeFactory

Parameters:

parentLabel - The label for the parent tree node.

children - The list of daughters of this tree. The children may be a (possibly empty) List of children or null

Returns:

The new interior tree node