Package com.predic8.membrane.core.interceptor.xmlcontentfilter

Class SimpleXPathParser

java.lang.Object

com.predic8.membrane.core.interceptor.xmlcontentfilter.SimpleXPathParser

public class SimpleXPathParser
extends Object

Partially parses XPath expressions. ("Partially" meaning that we are not interested in the full XPath grammar: Uninteresting parts are left as "unparsed string nodes" as long as we are able to parse the interesting parts.)

An XPath expression, given as a string, is transformed into a tree of nodes (instances of subclasses of SimpleXPathParser.Node).

We are only interested in strings, comments, round- and square-bracket-expressions. Any other substring of the expression is concatenated into a node of type SimpleXPathParser.UnparsedStringNode.

See the XPath 2.0 spec at ... .

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	SimpleXPathParser.CommentNode
static class	SimpleXPathParser.ContainerNode
static class	SimpleXPathParser.Node	This class together with its subclasses are used to build our syntax tree.
static class	SimpleXPathParser.RoundBracketNode
static class	SimpleXPathParser.SquareBracketNode
static class	SimpleXPathParser.StringNode
static class	SimpleXPathParser.UnparsedStringNode

Constructor Summary

Constructors

Constructor	Description
SimpleXPathParser()

Method Summary

Modifier and Type	Method	Description
SimpleXPathParser.ContainerNode	parse(String xpath)	Main entry point into this class.

Methods inherited from class java.lang.Object

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

Constructor Details

SimpleXPathParser

public SimpleXPathParser()

Method Details

parse

public SimpleXPathParser.ContainerNode parse(String xpath)

Main entry point into this class.