cn.wanghaomiao.xpath.core

Class XpathEvaluator

java.lang.Object

cn.wanghaomiao.xpath.core.XpathEvaluator

public class XpathEvaluator
extends Object

Since:

14-3-12

Author:

汪浩淼 [ et.tw@163.com ]

Constructor Summary

Constructors

Constructor and Description
XpathEvaluator()

Method Summary

Methods

Modifier and Type	Method and Description
Object	callFilterFunc(String funcname, org.jsoup.nodes.Element el) 调用谓语中函数
Object	callFunc(String funcname, org.jsoup.select.Elements context) 调用xpath主干上的函数
List<Object>	evaluate(String xpath, org.jsoup.select.Elements root) 根据xpath求出结果
org.jsoup.nodes.Element	filter(org.jsoup.nodes.Element e, Node node) 元素过滤器
org.jsoup.select.Elements	getAxisScopeEls(String axis, org.jsoup.nodes.Element e) 调用轴选择器
int	getElIndex(org.jsoup.nodes.Element e)
List<Node>	getXpathNodeTree(String xpath) 获取xpath解析语法树
List<Object>	xpathParser(String xpath, org.jsoup.select.Elements root) xpath解析器的总入口，同时预处理，如‘|’

Methods inherited from class java.lang.Object

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

Constructor Detail

XpathEvaluator

public XpathEvaluator()

Method Detail

xpathParser

public List<Object> xpathParser(String xpath,
                       org.jsoup.select.Elements root)
                         throws NoSuchAxisException,
                                NoSuchFunctionException

xpath解析器的总入口，同时预处理，如‘|’

Parameters:

xpath -

root -

Returns:

Throws:

NoSuchAxisException

NoSuchFunctionException

getXpathNodeTree

public List<Node> getXpathNodeTree(String xpath)

获取xpath解析语法树

Parameters:

xpath -

Returns:

evaluate

public List<Object> evaluate(String xpath,
                    org.jsoup.select.Elements root)
                      throws NoSuchAxisException,
                             NoSuchFunctionException

根据xpath求出结果

Parameters:

xpath -

root -

Returns:

Throws:

NoSuchAxisException

NoSuchFunctionException

filter

public org.jsoup.nodes.Element filter(org.jsoup.nodes.Element e,
                             Node node)
                               throws NoSuchFunctionException,
                                      NoSuchAxisException

元素过滤器

Parameters:

e -

node -

Returns:

Throws:

NoSuchFunctionException

NoSuchAxisException

getAxisScopeEls

public org.jsoup.select.Elements getAxisScopeEls(String axis,
                                        org.jsoup.nodes.Element e)
                                          throws NoSuchAxisException

调用轴选择器

Parameters:

axis -

e -

Returns:

Throws:

NoSuchAxisException

callFunc

public Object callFunc(String funcname,
              org.jsoup.select.Elements context)
                throws NoSuchFunctionException

调用xpath主干上的函数

Parameters:

funcname -

context -

Returns:

Throws:

NoSuchFunctionException

callFilterFunc

public Object callFilterFunc(String funcname,
                    org.jsoup.nodes.Element el)
                      throws NoSuchFunctionException

调用谓语中函数

Parameters:

funcname -

el -

Returns:

Throws:

NoSuchFunctionException

getElIndex

public int getElIndex(org.jsoup.nodes.Element e)