org.primordion.xholon.script

Class TreeIntegrityChecker

java.lang.Object

org.primordion.xholon.base.Xholon

org.primordion.xholon.script.XholonScript

org.primordion.xholon.script.TreeIntegrityChecker

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable, IXholon, XholonMarker

public class TreeIntegrityChecker
extends XholonScript

Check the integrity of a Xholon tree or subtree. The script performs the following checks:

• Siblings must all have the same parent node.
• A first child and its parent must reference each other.
• A script node must be a last child of its parent.

This is a sample Xholon script, written in normal compiled Java. It's located in the common default package for Java scripts. It can therefore be pasted into a running Xholon app (Paste last child) simply as:

<TreeIntegrityChecker/>

Since:

0.8.1 (Created on October 8, 2009)

See Also:

Xholon Project website, Serialized Form

Field Summary

Fields inherited from interface org.primordion.xholon.base.IXholon

DEFAULT_SIZE_MSG_Q, DEFAULT_SIZE_SYSTEM_MSG_Q, GETNAME_DEFAULT, GETNAME_LOCALPART_ID, GETNAME_NOROLENAME, GETNAME_ROLENAME_OR_CLASSNAME, GETNAME_ROLENAMESEP_, GETNAME_SIZE_TEMPLATE, NINCLUDE_PSC, NINCLUDE_PSx, NINCLUDE_PxC, NINCLUDE_Pxx, NINCLUDE_xSC, NINCLUDE_xSx, NINCLUDE_xxC, NINCLUDE_xxx, XHOLON_ID_DEFAULT, XHOLON_ID_NULL

Constructor Summary

Constructors

Constructor and Description
TreeIntegrityChecker()

Method Summary

Methods

Modifier and Type	Method and Description
void	postConfigure() Perform some action, typically once at start up; MAY be overridden.
boolean	visit(IXholon visitee) Visit another IXholon, and perform some operation.

Methods inherited from class org.primordion.xholon.script.XholonScript

toXmlAttributes

Methods inherited from class org.primordion.xholon.base.Xholon

act, actNr, appendChild, appendChild, appendChild, appendsOwnChildren, bindPorts, cleanup, compareTo, configure, configure, consoleLog, decVal, decVal, depth, doAction, equals, findFirstChildWithXhClass, findFirstChildWithXhClass, forwardMessage, forwardSyncMessage, getActionList, getAllPorts, getAnnotation, getApp, getAttributeNodeXh, getAttributeXh, getChildNodes, getClassNode, getClassNode, getFactory, getFirstChild, getFirstSibling, getId, getInteraction, getInteractionsEnabled, getIQueueImplName, getLastChild, getLastSibling, getLogger, getMsgQ, getName, getName, getNeighbors, getNextSibling, getNthChild, getNthSibling, getNumChildren, getNumLevels, getNumSiblings, getParentNode, getPort, getPort, getPreviousSibling, getRoleName, getRootNode, getSelfAndSiblings, getSelfAndSiblingsIndex, getService, getSiblings, getSystemMsgQ, getUid, getUri, getVal_boolean, getVal_byte, getVal_char, getVal_double, getVal_float, getVal_int, getVal_long, getVal_Object, getVal_short, getVal_String, getVal, getXhc, getXhcId, getXhcName, getXholon2Xml, getXhType, getXml2Xholon, getXPath, handleNodeSelection, handleNodeSelection, hasAncestor, hasAnnotation, hasAttributeXh, hasChildNodes, hasChildOrSiblingNodes, hasNextSibling, hasParentNode, hasSiblingNodes, height, incVal, incVal, initialize, initStatics, inOrderPrint, insertAfter, insertAfter, insertAfter, insertBefore, insertBefore, insertBefore, insertFirstChild, isActiveObject, isAttributeHandler, isBound, isContainer, isExternal, isInternal, isLeaf, isPassiveObject, isRootNode, isUniqueSibling, isUniqueSiblingRoleName, performActivity, performActivity, performBooleanActivity, performBooleanActivity, performDoubleActivity, performGuard, performVoidActivity, postAct, postOrderPrint, postReconfigure, preAct, preConfigure, preOrderPrint, preReconfigure, print, println, processMessageQ, processReceivedMessage, processReceivedSyncMessage, processSystemMessageQ, reconfigure, registerMessageForwardee, remove, removeAttributeNodeXh, removeAttributeXh, removeChild, replaceNode, searchForReferencingNodes, searchForReferencingNodesRecurse, sendMessage, sendMessage, sendMessage, sendSyncMessage, sendSyncMessage, sendSyncMessage, sendSystemMessage, sendSystemMessage, setActionList, setAnnotation, setApp, setAttributeNodeXh, setAttributeVal, setAttributeXh, setFirstChild, setId, setName, setNextSibling, setParentChildLinks, setParentNode, setParentSiblingLinks, setPort, setPort, setPorts, setRoleName, setUid, setUri, setVal_boolean, setVal_byte, setVal_char, setVal_double, setVal_float, setVal_int, setVal_long, setVal_Object, setVal_short, setVal_String, setVal, setVal, setVal, setVal, setVal, setVal, setVal, setVal, setVal, setVal, setXhc, showAnnotation, swapNode, terminate, toString, toXml, toXmlAttribute, toXmlText, treeSize

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

TreeIntegrityChecker

public TreeIntegrityChecker()

Method Detail

postConfigure

public void postConfigure()

Description copied from interface: IXholon

Perform some action, typically once at start up; MAY be overridden. Recursive; application should call this only for root.

Specified by:

postConfigure in interface IXholon

Overrides:

postConfigure in class Xholon

visit

public boolean visit(IXholon visitee)

Description copied from interface: IXholon

Visit another IXholon, and perform some operation. This can be used for a wide range of purposes. A client that wants to visit all nodes in a IXholon tree, can call this method on the root of the tree, passing itself or some other delegated object in as the visitor node. This method allows implementation of the Visitor Pattern described in Gamma, et al. (1995) Design Patterns, p. 331, although the Xholon implementation is somewhat different. This pattern is a callaboration between visitor and visitee objects.

If a visitor and visitee object are the same, then the default implementation of the visit method will not call its visitor.

Specified by:

visit in interface IXholon

Overrides:

visit in class Xholon

Parameters:

visitee - A visitor.

Returns:

true or false, used to determine whether to continue.

See Also:

IXholon.visit(org.primordion.xholon.base.IXholon)