Difference between revisions of "JNode"
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{{Description:JNode}}
===Defined in===
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Revision as of 17:37, 22 March 2010
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[Edit Descripton] Template:Description:JNode
Defined in[edit]
libraries/joomla/base/node.php
Methods[edit]
Method name | Description |
---|---|
__construct | Constructor |
addChild | Add child to this node |
setParent | Set the parent of a this node |
getChildren | Get the children of this node |
getParent | Get the parent of this node |
hasChildren | Test if this node has children |
hasParent | Test if this node has a parent |
Importing[edit]
jimport( 'joomla.base.node' );
[Edit See Also] Template:SeeAlso:JNode
Examples[edit]
<CodeExamplesForm />
Tree Structures with JNode
JNode is a class that allows you to create nodes, normaly used as "leaves" of object-trees. Often used in conjunction with the JTree class.
Defined in[edit]
libraries/joomla/base/tree.php
Methods[edit]
Method name | Description |
---|---|
__construct | Class constructor, overridden in descendant classes. |
addChild | |
getParent | |
setParent | |
hasChildren | |
getChildren |
Importing[edit]
jimport( 'joomla.base.tree' );
Examples[edit]
Code Examples[edit]
Tree Structures with JNode
JTree and JNode can be used to create and process simple tree structures. Let's see how this works for JNode with a simple example.
We want represent the family structure of the Smiths. Granny Barbara has two daughters. Stefanie and Aunti Sue. Stefanie has two children, Peter and Stewie. Auntie Sue doesn't have children.
Let's take a look how we can represent this familiy in an object tree.
$barbara = new JNode();
$stefanie = new JNode();
$sue = new JNode();
$peter = new JNode();
$stewie = new JNode();
//Granny Barbara has two children, stefanie, and sue
$barbara->addChild($stefanie);
$barbara->addChild($sue);
/*
* Sometimes we want declare parent-child relationships the other way around.
* We can also do that
*/
$peter->setParent($stefanie);
$stewie->setParent($stefanie);
JTree and JNode can be used to create and process simple tree structures. Let's see how this works for JNode with a simple example.
We want represent the family structure of the Smiths. Granny Barbara has two daughters. Stefanie and Aunti Sue. Stefanie has two children, Peter and Stewie. Auntie Sue doesn't have children.
Let's take a look how we can represent this familiy in an object tree.