org.tinyjee.maven.dim.utils
Class XPathEvaluatorImplementation

java.lang.Object
  org.tinyjee.maven.dim.utils.XPathEvaluatorImplementation

All Implemented Interfaces:

XPathEvaluator

public class XPathEvaluatorImplementation
extends Object
implements XPathEvaluator

Implements XPathEvaluator.

Author:

Juergen_Kellerer, 2011-10-12

Field Summary

static String

DEFAULT_PREFIX

Constructor Summary

XPathEvaluatorImplementation(Document document)
Creates a new evaluator around the given document.

Method Summary

List<Node>	asList(NodeList nodeList) Converts the given NodeList to a java list of Node instances.
List<Node>	findNodes(String xpathExpression) Finds all DOM nodes that match the given XPath expression.
String	findText(String xpathExpression) Searches the loaded document for the text content of the first node matched by the given XPath expression.
XPathEvaluator	newEvaluator(Node node) Creates a new dependent evaluator that resolves nodes relative to the given node.
String	serialize(Node node) Serializes the given DOM node to XML.
static String	serializeNode(Node node, boolean omitDeclaration, boolean standalone)

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_PREFIX

public static final String DEFAULT_PREFIX

See Also:

Constant Field Values

Constructor Detail

XPathEvaluatorImplementation

public XPathEvaluatorImplementation(Document document)

Creates a new evaluator around the given document.

Parameters:

document - the document to evaluate on.

Method Detail

serializeNode

public static String serializeNode(Node node,
                                   boolean omitDeclaration,
                                   boolean standalone)

findText

public String findText(String xpathExpression)

Description copied from interface: XPathEvaluator

Searches the loaded document for the text content of the first node matched by the given XPath expression.

Specified by:

findText in interface XPathEvaluator

Parameters:

xpathExpression - The xpath expression used to select the text content. E.g. "/html/head/title"

Returns:

The first matched text content or 'null' if not found.

findNodes

public List<Node> findNodes(String xpathExpression)

Description copied from interface: XPathEvaluator

Finds all DOM nodes that match the given XPath expression.

Specified by:

findNodes in interface XPathEvaluator

Parameters:

xpathExpression - The xpath expression used to select nodes, E.g. //table

Returns:

A list of all matched DOM nodes. If no nodes were matched, an empty list is returned instead.

serialize

public String serialize(Node node)

Description copied from interface: XPathEvaluator

Serializes the given DOM node to XML.

Specified by:

serialize in interface XPathEvaluator

Parameters:

node - the node to serialize.

Returns:

the XML string representing the serialized node.

asList

public List<Node> asList(NodeList nodeList)

Description copied from interface: XPathEvaluator

Converts the given NodeList to a java list of Node instances.

Specified by:

asList in interface XPathEvaluator

Parameters:

nodeList - the node list to convert.

Returns:

a node list that uses the standard java collection framework.

newEvaluator

public XPathEvaluator newEvaluator(Node node)

Description copied from interface: XPathEvaluator

Creates a new dependent evaluator that resolves nodes relative to the given node.

The evaluator returned by this method shares internals like namespace resolution and xpath engine and may not be used concurrently (in multiple threads) with its creator.

Specified by:

newEvaluator in interface XPathEvaluator

Parameters:

node - the node to resolve against.

Returns:

a new evaluator that resolves nodes relative to the given node.