From Nested Sets to Trees
Hi All
I need to construct a tree in java objects out of a table that has a nested set ( Joe Celko ) .
I have the table
Products
ProductID number primary key
Left number
Right number
A wanted to construct a tree base on the following
class Product {
Integer ProductID;
Product left;
Product right;
Does anyone know of a example/tutorial that explains this
thanks
Ps one product can have two childern , left and right , No more
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Batch file extracting all files from nested archives
I have managed to leverage a powerful
forfiles command line utility with the mighty
7z compression program.
Below is a simple batch file extracting all files from nested archives hidden at any depth inside other archives and/or folders. After the extraction each archive file turns into a folder having the archive file name. If, for example, there was an "outer.rar"
archive file containing nothing but an "inner.zip" archive with only "afile.txt" inside, "outer.rar" becomes "...\outer.rar\inner.zip\afile.txt" file system path.
@echo off
rem extract_nested_archives.bat
move %1 "%TMP%"\%2
md %2
7z x -o%1 -y %TMP%\%2
del "%TMP%"\%2
for %%a in (zip rar jar z bz2 gz gzip tgz tar lha iso wim cab rpm deb) do forfiles /P %1 /S /M *.%%a /C "cmd /c if @isdir==FALSE extract_nested_archives.bat @path @file"
ARCHIVES ARE DELETED DURING THE EXTRACTION! Make a copy before running the script!
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The first parameter of extract_nested_archives.bat is the full path name of the archive or folder that should be fully expanded; the second parameter is just the archive or folder name without the path. So you should run "c:\temp\extract_nested_archives.bat
c:\temp\outer.rar outer.rar" from the command line to completely expand "outer.rar". "c:\temp" must be the current folder.
Best regards, 0x000000AFIncredibly useful! Thank you so much. I did make a couple of small changes to make the script a little easier to use from the end-user perspective.
First - I don't like making the user input the redundant second parameter, so I added this snippet which extracts it from the first parameter. The first line of the snippet enables delayed expansion so that special characters in our file name don't
break anything. The second line pulls the parameter into a variable, and the 3rd line uses delayed expansion on that new variable. Before implementing delayed expansion I had problems with file paths which included parentheses.
SetLocal EnableDelayedExpansion
Set SOURCE=%1
For %%Z in (!source!) do (
set FILENAME=%%~nxZ
set FILENAME=%FILENAME:"=%
Anyway once that was done, I just used %FILENAME% everywhere in the script instead of
%2 (making sure to correct quotes as needed)
This way, to run my script all you need to run is:
C:\temp\extract_nested_archives.bat C:\temp\Archive.zip
Second - I didn't want to modify the Windows environment variable. So I replaced
7z with "%PROGRAMFILES%\7-zip\7z.exe"
I also replaced extract_nested_archives.bat with "%~f0" (which represents the full path+filename of the current script).
Here is my full script now. Tested on Windows 8 with the 64-bit version of 7-zip installed:
@echo off
Setlocal EnableDelayedExpansion
Set source=%1
For %%Z in (!source!) do (
set FILENAME=%%~nxZ
set FILENAME=%FILENAME:"=%
move /Y %1 "%TMP%\%FILENAME%"
md "%FILENAME%"
"%PROGRAMFILES%\7-zip\7z.exe" x -o%1 -y "%TMP%\%FILENAME%"
DEL "%TMP%\%FILENAME%"
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Hello~
I am just starting to use the nested set model for storing hierarchical data in a database, and while I understand the concept, I am not at all sure how to actually display the data in, say, an unordered list! Right now, I am using the following query to retrieve my list:
SELECT
node.pageName
FROM
admin_nav AS node,
admin_nav AS parent
WHERE
node.lft BETWEEN parent.lft AND parent.rght
AND parent.pageName = 'Assessment'
ORDER BY
node.lft
It outputs correctly if I cfdump it, but I am not sure how to create a loop that would put the <ul> and <li> tags in the correct places. I have searched for some kind of tutorial about this, but no luck! Any help would be appreciated. Thanks!
KCOK, I think I have got it all figured out, and I thought I would post my solution! Thanks to everyone for your help!
I added a new table to my database to hold any special formatting tags for a given depth of the list (ie, I want my 1st level items to be enclosed in <h2></h2> tags).
Query:
SELECT
o.pageName,
o.depth,
ant.specialTag
FROM
ADMIN_nav_tag AS ant
RIGHT JOIN
SELECT TOP (100) PERCENT
node.pageName,
(COUNT(parent.pageName) - 1) AS depth
FROM
admin_nav AS node,
admin_nav AS parent
WHERE
node.lft BETWEEN parent.lft AND parent.rght
AND node.pageName <> 'Home'
GROUP BY
node.pageName,
node.lft
ORDER BY
node.lft
AS o
ON ant.depth = o.depth
Output:
<div id="navBar">
<ul>
<Cfset count = 0 />
<cfoutput query="getNav" group="depth">
<cfset liTag = '' />
<cfif specialTag NEQ ''>
<cfset liTag = '<' & #specialTag# & '>' />
</cfif>
<cfoutput>
<Cfset fdepth = getNav.depth[getNav.currentRow + 1 ] />
<cfif lengthcount eq 1>
<li>#liTag##pagename##replaceNoCase(liTag, '<', '</')#</li>
<cfelse>
<li>#liTag##pagename##replaceNoCase(liTag, '<', '</')#
<cfif count lt lengthCount -1>
<Cfif fdepth gt depth>
<ul>
<cfelse>
</li>
</Cfif>
<cfif fdepth lt depth>
#repeatString('</ul></li>',depth-fdepth)#
</cfif>
<cfelse>
</li>
</cfif>
<Cfset count = count + 1 />
</cfif>
</cfoutput>
</cfoutput>
</ul>
</div> -
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Hi All,
I have big trouble to retrieve data from nested tables..
From java code developer are passing struct data type to Oracle procedure.. So equal data type in oracle has been created as created as object
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2 (
3 TRAN_ID NUMBER ,
4 EVENT_ID NUMBER ,
5 EVENT_CD VARCHAR2(10 BYTE));
6 /
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SQL>
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2 as table of txndata;
3 /
Type created.
SQL>
SQL> declare
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3 txndata(10, 20, 'One')
4 ,txndata(10, 20, 'Two')
5 );
6 begin
7 for rec in (select tx.event_id
8 , tx.event_cd
9 from table (txn) tx
10 )
11 loop
12 dbms_output.put_line (rec.event_id||' - '||rec.event_cd);
13 end loop;
14 end;
15 /
20 - One
20 - Two
PL/SQL procedure successfully completed.Edited by: Alex Nuijten on Oct 24, 2011 12:24 PM -
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I have a class where i do all database operation .First i fire select query and take values from result set and based on that value i fire update query.
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<wempfdebit/>
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<anzpos/>
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factory.setValidating(true);
DocumentBuilder builder =factory.newDocumentBuilder();
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https://social.technet.microsoft.com/Forums/sharepoint/en-US/b976f17e-99b5-42bb-bc82-8d4123a625cf/change-the-parent-of-a-content-type.
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https://support.office.com/en-au/article/Create-and-edit-content-types-3d5d45af-608d-4183-8d51-073095fe0312#__toc239159103.
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Below is my code :
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
layout="horizontal"
creationComplete="init()">
<mx:Script>
<![CDATA[
import mx.controls.listClasses.IListItemRenderer;
import mx.rpc.events.FaultEvent;
import mx.rpc.events.ResultEvent;
import mx.utils.ObjectUtil;
import mx.collections.ICollectionView;
import mx.core.UIComponent;
import mx.managers.DragManager;
import mx.events.DragEvent;
import mx.controls.Alert;
import mx.controls.Label;
import mx.events.CloseEvent;
private var homePath:String="/home/e311394/dndTest/";
private var destPath:String="/home/e311394/dndDest/";
private var eid:String="e311394";
private var actn:String;
[Bindable]
private var cm:ContextMenu;
private var cmi:ContextMenuItem;
[Bindable]
private var dp:ArrayCollection;
private function init():void
cmi=new ContextMenuItem("Remove");
cmi.enabled=true;
cmi.addEventListener(ContextMenuEvent.MENU_ITEM_SELECT, contextMenuItem_menuItemSelect);
cm=new ContextMenu();
cm.hideBuiltInItems();
cm.customItems=[cmi];
cm.addEventListener(ContextMenuEvent.MENU_SELECT, contextMenuItem_menuSelect);
list.contextMenu=cm;
private function contextMenuItem_menuSelect(evt:ContextMenuEvent):void
list.selectedIndex=lastRollOverIndex;
private function contextMenuItem_menuItemSelect(evt:ContextMenuEvent):void
var loclSelectedRow:Object=list.selectedItem;
var lostrSelectedMenuItem:String;
lostrSelectedMenuItem=evt.target.caption;
if (loclSelectedRow != null)
var obj:Object=new Object()
obj.label=loclSelectedRow.label as String;
//Alert.show(obj.label);
if (lostrSelectedMenuItem == "Remove")
if(loclSelectedRow!=null)
var pth:String=homePath.concat(loclSelectedRow.label);
//Alert.show(pth);
//FlexDnDRemoteService.process(eid,"delete",pth,"-");
var coll:ArrayCollection=list.dataProvider as ArrayCollection;
if (coll.contains(loclSelectedRow))
coll.removeItemAt(coll.getItemIndex(loclSelectedRow));
public function onTreeDragEnter(event:DragEvent):void
event.preventDefault();
DragManager.acceptDragDrop(event.target as UIComponent);
tree.showDropFeedback(event);
protected function onTreeDragOver(event:DragEvent):void
event.preventDefault();
event.currentTarget.hideDropFeedback(event);
try
var index:int=tree.calculateDropIndex(event);
catch (e:Error)
DragManager.showFeedback(DragManager.NONE);
return;
tree.selectedIndex=index;
var draggedOverItem:Object=tree.selectedItem;
public function onTreeDragExit(event:DragEvent):void
event.preventDefault();
tree.hideDropFeedback(event);
private function showAlert():void
Alert.yesLabel="Move";
Alert.noLabel="Copy";
Alert.buttonWidth=70;
Alert.show("Copy / Move ?", "Confirm", Alert.YES | Alert.NO | Alert.CANCEL, this, alertListener, null, Alert.OK);
private function alertListener(eventObj:CloseEvent):void
var result:Boolean=false;
if (eventObj.detail == Alert.CANCEL)
//Alert.show("CANCEL");
return;
if (eventObj.detail == Alert.YES)
//Alert.show("YES");
result=true;
else if (eventObj.detail == Alert.NO)
//Alert.show("NO");
result=false;
var index:int=tree.calculateDropIndex(treedropevt);
//Alert.show("Drop Pos" + index.toString());
/* var treeList:ArrayCollection=tree.dataProvider as ArrayCollection;
Alert.show(" index"+index+"Length "+treeList.length);
if(index > treeList.length)
Alert.show("Returning");
return;
var items:Array=new Array();
if (treedropevt.dragSource.hasFormat("items"))
items=items.concat(treedropevt.dragSource.dataForFormat("items") as Array);
var parentItem:Object;
parentItem=getObjectTarget();
/* if (tree.dataDescriptor.isBranch(tree.indexToItemRenderer(index).data))
parentItem=tree.indexToItemRenderer(index).data;
else
var dropParentPackage:Object = tree.mx_internal::_dropData.parent as Object;
Alert.show("HAck"+dropParentPackage.toString());
parentItem=tree.getParentItem(tree.indexToItemRenderer(index).data);
//Alert.show("Lenght "+ObjectUtil.getClassInfo(parentItem).properties.length);
//Alert.show("Lenght "+ObjectUtil.getClassInfo(parentItem).properties.length);
var position:int=0;
/* if(ObjectUtil.getClassInfo(parentItem).properties.length==0)
Alert.show("Returning");
return;
if (parentItem != null)
try
while (tree.indexToItemRenderer(index).data != parentItem)
//Alert.show(tree.indexToItemRenderer(index).data.toString());
if (index > 0)
index--;
//Alert.show("Insiade");
position++;
catch (e:Error)
Alert.show("Catch" + index.toString());
return;
for each (var item:Object in items)
var obj:Object=new Object()
obj.label=item.label as String;
if (parentItem != null)
//Alert.show("ADDED");
tree.dataDescriptor.addChildAt(parentItem, obj, position++);
else
//Alert.show("PARENT NULL");
tree.dataDescriptor.addChildAt(tree.selectedItem, obj, position++);
var spth:String=homePath.concat(item.label);
//Alert.show(spth);
var dpth:String=destPath.concat(item.label);
//Alert.show(dpth);
if (result == true)
removeItems();
//FlexDnDRemoteService.process(eid,"move",spth,dpth);
else
//FlexDnDRemoteService.process(eid,"copy",spth,dpth);
tree.validateNow();
public function getObjectTarget():Object
var dropData:Object=tree.mx_internal::_dropData as Object;
if (dropData.parent != null)
return dropData.parent;
else
// if there is not parent (root of the tree), I take the root directly
var renderer:IListItemRenderer=tree.indexToItemRenderer(0);
return renderer.data;
public function removeItems():void
//remove moved elements
var items:Array=treedropevt.dragSource.dataForFormat("items") as Array;
var coll:ArrayCollection=list.dataProvider as ArrayCollection;
for each (var item:Object in items)
if (coll.contains(item))
coll.removeItemAt(coll.getItemIndex(item));
private var treedropevt:DragEvent;
public function onTreeDragDrop(event:DragEvent):void
treedropevt=event;
showAlert();
event.preventDefault();
tree.hideDropFeedback(event);
public function resultHandler(event:ResultEvent):void
Alert.show("Success", "Status");
public function faultHandler(event:FaultEvent):void
Alert.show(event.fault.faultString, "Failure");
]]>
</mx:Script>
<mx:ArrayCollection id="listDP">
<mx:Object label="File1.dnd"/>
<mx:Object label="File2.dnd"/>
<mx:Object label="File3.dnd"/>
<mx:Object label="File4.dnd"/>
<mx:Object label="File5.dnd"/>
</mx:ArrayCollection>
<mx:Number id="lastRollOverIndex"/>
<!--
<mx:ArrayCollection id="treeDP">
<mx:Object label="/home">
<mx:children>
<mx:Object label="dummy1.ks"/>
<mx:Object label="dummy2.ks"/>
<mx:Object label="e493126">
<mx:children>
<mx:ArrayCollection>
<mx:Object label="/home/e493126/sample1.ks"/>
</mx:ArrayCollection>
</mx:children>
</mx:Object>
</mx:children>
</mx:Object>
</mx:ArrayCollection>
-->
<mx:ArrayCollection id="treeDP">
<mx:Object label="/dndDest">
<mx:children>
<mx:ArrayCollection>
<mx:Object label="sample1.ks"/>
<mx:Object label="sample2.ks"/>
<mx:Object label="sample3.ks"/>
<mx:Object label="sample4.ks"/>
<mx:Object label="sample5.ks"/>
<mx:Object label="sample6.ks"/>
</mx:ArrayCollection>
</mx:children>
</mx:Object>
</mx:ArrayCollection>
<mx:List id="list"
itemRollOver="lastRollOverIndex = event.rowIndex"
width="50%"
dragEnabled="true"
dataProvider="{listDP}"
labelField="label"
allowMultipleSelection="true"
dragMoveEnabled="false">
</mx:List>
<mx:Tree id="tree"
width="50%"
dragEnabled="true"
dataProvider="{treeDP}"
dragEnter="onTreeDragEnter(event)"
dragOver="onTreeDragOver(event)"
dragExit="onTreeDragExit(event)"
dragDrop="onTreeDragDrop(event)"
labelField="label"
liveScrolling="true">
</mx:Tree>
<mx:RemoteObject id="FlexDnDRemoteService"
showBusyCursor="true"
destination="FlexDnD">
<mx:method name="process"
result="resultHandler(event)"
fault="faultHandler(event)"/>
</mx:RemoteObject>
</mx:Application>
Thanks,
RajivYa , i have searched and have used the same code.
But needed to customize few things like:
stop dnd in same tree
drop some item into a folder ..( onto it ) etc
have achieved the same .. but this issue ..
i think the tree dataprovider (contents internally is not being updated .. only the UI)
any suggestions ?
- Rajiv
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