org.jsoup.nodes
Class Node

java.lang.Object
  org.jsoup.nodes.Node

Direct Known Subclasses:

Comment, DataNode, Element, TextNode, XmlDeclaration

public abstract class Node
extends Object

The base, abstract Node model. Elements, Documents, Comments etc are all Node instances.

Author:

Jonathan Hedley, jonathan@hedley.net

Constructor Summary

protected	Node(String baseUri)
protected	Node(String baseUri, Attributes attributes) Create a new Node.

Method Summary

String	absUrl(String attributeKey) Get an absolute URL from a URL attribute that may be relative (i.e.
protected void	addChild(Node in)
String	attr(String attributeKey) Get an attribute's value by its key.
Node	attr(String attributeKey, String attributeValue) Set an attribute (key=value).
Attributes	attributes() Get all of the element's attributes.
String	baseUri() Get the base URI of this node.
Node	childNode(int index) Get a child node by index
List<Node>	childNodes() Get this node's children.
boolean	equals(Object o)
boolean	hasAttr(String attributeKey) Test if this element has an attribute.
int	hashCode()
protected void	indent(StringBuilder accum)
protected static <N extends Node> Integer	indexInList(N search, List<N> nodes)
Node	nextSibling() Get this node's next sibling.
protected int	nodeDepth()
abstract String	nodeName() Get the node name of this node.
String	outerHtml() Get the outer HTML of this node.
Node	parent() Gets this node's parent node.
Node	previousSibling() Get this node's previous sibling.
Node	removeAttr(String attributeKey) Remove an attribute from this element.
protected void	removeChild(Node out)
protected void	replaceChild(Node out, Node in)
void	setBaseUri(String baseUri) Update the base URI of this node.
protected void	setParentNode(Node parentNode)
Integer	siblingIndex() Get the list index of this node in its node sibling list.
List<Node>	siblingNodes() Retrieves this node's sibling nodes.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Node

protected Node(String baseUri,
               Attributes attributes)

Create a new Node.

Parameters:

baseUri - base URI

attributes - attributes (not null, but may be empty)

Node

protected Node(String baseUri)

Method Detail

nodeName

public abstract String nodeName()

Get the node name of this node. Use for debugging purposes and not logic switching (for that, use instanceof).

Returns:

node name

attr

public String attr(String attributeKey)

Get an attribute's value by its key.

To get an absolute URL from an attribute that may be a relative URL, prefix the key with abs, which is a shortcut to the absUrl(java.lang.String) method. E.g.:

String url = a.attr("abs:href");

Parameters:

attributeKey - The attribute key.

Returns:

The attribute, or empty string if not present (to avoid nulls).

See Also:

attributes(), hasAttr(String), absUrl(String)

attributes

public Attributes attributes()

Get all of the element's attributes.

Returns:

attributes (which implements iterable, in same order as presented in original HTML).

attr

public Node attr(String attributeKey,
                 String attributeValue)

Set an attribute (key=value). If the attribute already exists, it is replaced.

Parameters:

attributeKey - The attribute key.

attributeValue - The attribute value.

Returns:

this (for chaining)

hasAttr

public boolean hasAttr(String attributeKey)

Test if this element has an attribute.

Parameters:

attributeKey - The attribute key to check.

Returns:

true if the attribute exists, false if not.

removeAttr

public Node removeAttr(String attributeKey)

Remove an attribute from this element.

Parameters:

attributeKey - The attribute to remove.

Returns:

this (for chaining)

baseUri

public String baseUri()

Get the base URI of this node.

Returns:

base URI

setBaseUri

public void setBaseUri(String baseUri)

Update the base URI of this node.

Parameters:

baseUri - base URI to set

absUrl

public String absUrl(String attributeKey)

Get an absolute URL from a URL attribute that may be relative (i.e. an <a href> or <img src>.

If the attribute value is already absolute (i.e. it starts with a protocol, like http:// or https:// etc), and it successfully parses as a URL, the attribute is returned directly. Otherwise, it is treated as a URL relative to the element's baseUri, and made absolute using that.

As an alternate, you can use the attr(java.lang.String) method with the abs: prefix.

Parameters:

attributeKey - The attribute key

Returns:

An absolute URL if one could be made, or an empty string (not null) if the attribute was missing or could not be made successfully into a URL.

See Also:

attr(java.lang.String), URL.URL(java.net.URL, String)

childNode

public Node childNode(int index)

Get a child node by index

Parameters:

index - index of child node

Returns:

the child node at this index.

childNodes

public List<Node> childNodes()

Get this node's children. Presented as an unmodifiable list: new children can not be added, but the child nodes themselves can be manipulated.

Returns:

list of children. If no children, returns an empty list.

parent

public Node parent()

Gets this node's parent node.

Returns:

parent node; or null if no parent.

setParentNode

protected void setParentNode(Node parentNode)

replaceChild

protected void replaceChild(Node out,
                            Node in)

removeChild

protected void removeChild(Node out)

addChild

protected void addChild(Node in)

nodeDepth

protected int nodeDepth()

siblingNodes

public List<Node> siblingNodes()

Retrieves this node's sibling nodes. Effectively, node.parent.childNodes().

Returns:

node siblings, including this node

nextSibling

public Node nextSibling()

Get this node's next sibling.

Returns:

next sibling, or null if this is the last sibling

previousSibling

public Node previousSibling()

Get this node's previous sibling.

Returns:

the previous sibling, or null if this is the first sibling

siblingIndex

public Integer siblingIndex()

Get the list index of this node in its node sibling list. I.e. if this is the first node sibling, returns 0.

Returns:

position in node sibling list

See Also:

Element.elementSiblingIndex()

indexInList

protected static <N extends Node> Integer indexInList(N search,
                                                      List<N> nodes)

outerHtml

public String outerHtml()

Get the outer HTML of this node.

Returns:

HTML

toString

public String toString()

Overrides:

toString in class Object

indent

protected void indent(StringBuilder accum)

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object