linearalgebra.symbolic
Class AbstractUnknown

java.lang.Object
  linearalgebra.symbolic.AbstractUnknown

All Implemented Interfaces:

SymbolicValue

Direct Known Subclasses:

LeafUnknown, PairOperator, UnaryOperator

public abstract class AbstractUnknown
extends java.lang.Object
implements SymbolicValue

Field Summary

private boolean	containsAnswerCache
private SymbolicValue	containsNodeCache
private java.util.ArrayList<SymbolicValue>	m_parents

Fields inherited from interface linearalgebra.symbolic.SymbolicValue

ADDS, LEAF, MULT

Constructor Summary

AbstractUnknown()

Method Summary

void	addParent(SymbolicValue parent) Adds a parent to the nodes parent list.
protected void	appendParenthesisString(SymbolicValue v, java.lang.StringBuffer str)
boolean	contains(SymbolicValue v, SymbolicValue parent) Searches the tree for the SymbolicValue v.
SymbolicValue	getParent(int index) Returns the parent specified by the index.
int	getParentCount() Returns the number of nodes that have this subtree as a child.
boolean	isNormal() Checks if each child in the tree should be operated on first according to the operator precedence.
void	removeParent(SymbolicValue parent)
SymbolicValue	scale(SymbolicValue v)
void	subTreeChanged() Invalidates cached information about the tree.

Methods inherited from class java.lang.Object

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

Methods inherited from interface linearalgebra.symbolic.SymbolicValue

getChild, getChildCount, getNumericValue, getPrecedence

Field Detail

m_parents

private java.util.ArrayList<SymbolicValue> m_parents

containsNodeCache

private SymbolicValue containsNodeCache

containsAnswerCache

private boolean containsAnswerCache

Constructor Detail

AbstractUnknown

public AbstractUnknown()

Method Detail

scale

public final SymbolicValue scale(SymbolicValue v)

Specified by:

scale in interface SymbolicValue

isNormal

public boolean isNormal()

Description copied from interface: SymbolicValue

Checks if each child in the tree should be operated on first according to the operator precedence.

Specified by:

isNormal in interface SymbolicValue

getParentCount

public final int getParentCount()

Description copied from interface: SymbolicValue

Returns the number of nodes that have this subtree as a child.

Specified by:

getParentCount in interface SymbolicValue

addParent

public final void addParent(SymbolicValue parent)

Description copied from interface: SymbolicValue

Adds a parent to the nodes parent list.

Specified by:

addParent in interface SymbolicValue

removeParent

public final void removeParent(SymbolicValue parent)

Specified by:

removeParent in interface SymbolicValue

getParent

public final SymbolicValue getParent(int index)

Description copied from interface: SymbolicValue

Returns the parent specified by the index. Throws an ArrayOutOfBoundsException if the index is invalid.

Specified by:

getParent in interface SymbolicValue

contains

public boolean contains(SymbolicValue v,
                        SymbolicValue parent)

Description copied from interface: SymbolicValue

Searches the tree for the SymbolicValue v. Returns true if it contains the element, and false otherwise. The parent is passed in to allow easier tree traversal.

Specified by:

contains in interface SymbolicValue

subTreeChanged

public void subTreeChanged()

Description copied from interface: SymbolicValue

Invalidates cached information about the tree.

Specified by:

subTreeChanged in interface SymbolicValue

appendParenthesisString

protected final void appendParenthesisString(SymbolicValue v,
                                             java.lang.StringBuffer str)