Package org.apache.jmeter.util

# Class XPathUtil

java.lang.Object
org.apache.jmeter.util.XPathUtil

public class XPathUtil extends Object
This class provides a few utility methods for dealing with XML/XPath.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `static void`
  `computeAssertionResult(AssertionResult result, Document doc, String xPathExpression, boolean isNegated)`
  Fills result
  `static void`
  `computeAssertionResultUsingSaxon(AssertionResult result, String xmlFile, String xPathQuery, String namespaces, Boolean isNegated)`
  `static String`
  `formatXml(String xml)`
  Formats XML
  `static List<String[]>`
  `getNamespaces(String xml)`
  Compute namespaces for XML
  `static net.sf.saxon.s9api.Processor`
  `getProcessor()`
  `static String`
  `getValueForNode(Node node)`
  `static Document`
  `makeDocument(InputStream stream, boolean validate, boolean whitespace, boolean namespace, boolean tolerant, boolean quiet, boolean showWarnings, boolean reportErrors, boolean isXml, boolean downloadDTDs)`
  Utility function to get new Document
  `static Document`
  `makeDocument(InputStream stream, boolean validate, boolean whitespace, boolean namespace, boolean tolerant, boolean quiet, boolean showWarnings, boolean report_errors, boolean isXml, boolean downloadDTDs, OutputStream tidyOut)`
  Utility function to get new Document
  `static DocumentBuilder`
  `makeDocumentBuilder(boolean validate, boolean whitespace, boolean namespace, boolean downloadDTDs)`
  Create a DocumentBuilder using the makeDocumentFactory func.
  `static org.w3c.tidy.Tidy`
  `makeTidyParser(boolean quiet, boolean showWarnings, boolean isXml, StringWriter stringWriter)`
  Create a Tidy parser with the specified settings.
  `static List<String[]>`
  `namespacesParse(String namespaces)`
  `static void`
  `putValuesForXPathInList(Document document, String xPathQuery, List<? super String> matchStrings, boolean fragment)`
  Put in matchStrings results of evaluation
  `static void`
  `putValuesForXPathInList(Document document, String xPathQuery, List<? super String> matchStrings, boolean fragment, int matchNumber)`
  Put in matchStrings results of evaluation
  `static void`
  `putValuesForXPathInListUsingSaxon(String xmlFile, String xPathQuery, List<? super String> matchStrings, boolean fragment, int matchNumber, String namespaces)`
  `static NodeList`
  `selectNodeList(Document document, String xPathExpression)`
  Extract NodeList using expression
  `static void`
  `validateXPath(Document document, String xpathString)`
  Validate xpathString is a valid XPath expression
  `static void`
  `validateXPath2(Document document, String xpathString, String namespaces)`
  Validate xpathString is a valid XPath expression

  ### Methods inherited from class java.lang.Object

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

- ## Method Details

  - ### getProcessor

    public static net.sf.saxon.s9api.Processor getProcessor()

  - ### makeDocumentBuilder

    public static DocumentBuilder makeDocumentBuilder(boolean validate, boolean whitespace, boolean namespace, boolean downloadDTDs) throws ParserConfigurationException
    Create a DocumentBuilder using the makeDocumentFactory func.
    Parameters:
      `validate` - should the parser validate documents?
      `whitespace` - should the parser eliminate whitespace in element content?
      `namespace` - should the parser be namespace aware?
      `downloadDTDs` - if true, parser should attempt to resolve external entities
    Returns:
      document builder
    Throws:
      `ParserConfigurationException` - if `DocumentBuilder` can not be created for the wanted configuration

  - ### makeDocument

    public static Document makeDocument(InputStream stream, boolean validate, boolean whitespace, boolean namespace, boolean tolerant, boolean quiet, boolean showWarnings, boolean reportErrors, boolean isXml, boolean downloadDTDs) throws ParserConfigurationException, SAXException, IOException, TidyException
    Utility function to get new Document
    Parameters:
      `stream` - - Document Input stream
      `validate` - - Validate Document (not Tidy)
      `whitespace` - - Element Whitespace (not Tidy)
      `namespace` - - Is Namespace aware. (not Tidy)
      `tolerant` - - Is tolerant - i.e. use the Tidy parser
      `quiet` - - set Tidy quiet
      `showWarnings` - - set Tidy warnings
      `reportErrors` - - throw TidyException if Tidy detects an error
      `isXml` - - is document already XML (Tidy only)
      `downloadDTDs` - - if true, try to download external DTDs
    Returns:
      document
    Throws:
      `ParserConfigurationException` - when no `DocumentBuilder` can be constructed for the wanted configuration
      `SAXException` - if parsing fails
      `IOException` - if an I/O error occurs while parsing
      `TidyException` - if a ParseError is detected and `report_errors` is `true`

  - ### makeDocument

    public static Document makeDocument(InputStream stream, boolean validate, boolean whitespace, boolean namespace, boolean tolerant, boolean quiet, boolean showWarnings, boolean report_errors, boolean isXml, boolean downloadDTDs, OutputStream tidyOut) throws ParserConfigurationException, SAXException, IOException, TidyException
    Utility function to get new Document
    Parameters:
      `stream` - - Document Input stream
      `validate` - - Validate Document (not Tidy)
      `whitespace` - - Element Whitespace (not Tidy)
      `namespace` - - Is Namespace aware. (not Tidy)
      `tolerant` - - Is tolerant - i.e. use the Tidy parser
      `quiet` - - set Tidy quiet
      `showWarnings` - - set Tidy warnings
      `report_errors` - - throw TidyException if Tidy detects an error
      `isXml` - - is document already XML (Tidy only)
      `downloadDTDs` - - if true, try to download external DTDs
      `tidyOut` - OutputStream for Tidy pretty-printing
    Returns:
      document
    Throws:
      `ParserConfigurationException` - if `DocumentBuilder` can not be created for the wanted configuration
      `SAXException` - if parsing fails
      `IOException` - if I/O error occurs while parsing
      `TidyException` - if a ParseError is detected and `report_errors` is `true`

  - ### makeTidyParser

    public static org.w3c.tidy.Tidy makeTidyParser(boolean quiet, boolean showWarnings, boolean isXml, StringWriter stringWriter)
    Create a Tidy parser with the specified settings.
    Parameters:
      `quiet` - - set the Tidy quiet flag?
      `showWarnings` - - show Tidy warnings?
      `isXml` - - treat the content as XML?
      `stringWriter` - - if non-null, use this for Tidy errorOutput
    Returns:
      the Tidy parser

  - ### getValueForNode

    public static String getValueForNode(Node node)
    Parameters:
      `node` - `Node`
    Returns:
      String content of node

  - ### selectNodeList

    public static NodeList selectNodeList(Document document, String xPathExpression) throws TransformerException
    Extract NodeList using expression
    Parameters:
      `document` - `Document`
      `xPathExpression` - XPath expression
    Returns:
      `NodeList`
    Throws:
      `TransformerException` - when the internally used xpath engine fails

  - ### putValuesForXPathInList

    public static void putValuesForXPathInList(Document document, String xPathQuery, List<? super String> matchStrings, boolean fragment) throws TransformerException
    Put in matchStrings results of evaluation
    Parameters:
      `document` - XML document
      `xPathQuery` - XPath Query
      `matchStrings` - List of strings that will be filled
      `fragment` - return fragment
    Throws:
      `TransformerException` - when the internally used xpath engine fails

  - ### putValuesForXPathInList

    public static void putValuesForXPathInList(Document document, String xPathQuery, List<? super String> matchStrings, boolean fragment, int matchNumber) throws TransformerException
    Put in matchStrings results of evaluation
    Parameters:
      `document` - XML document
      `xPathQuery` - XPath Query
      `matchStrings` - List of strings that will be filled
      `fragment` - return fragment
      `matchNumber` - match number
    Throws:
      `TransformerException` - when the internally used xpath engine fails

  - ### putValuesForXPathInListUsingSaxon

    public static void putValuesForXPathInListUsingSaxon(String xmlFile, String xPathQuery, List<? super String> matchStrings, boolean fragment, int matchNumber, String namespaces) throws net.sf.saxon.s9api.SaxonApiException, FactoryConfigurationError
    Throws:
      `net.sf.saxon.s9api.SaxonApiException`
      `FactoryConfigurationError`

  - ### namespacesParse

    public static List<String[]> namespacesParse(String namespaces)

  - ### getNamespaces

    public static List<String[]> getNamespaces(String xml) throws XMLStreamException, FactoryConfigurationError
    Compute namespaces for XML
    Parameters:
      `xml` - XML content
    Returns:
      List of Namespaces
    Throws:
      `XMLStreamException` - on problematic xml
      `FactoryConfigurationError` - when no xml input factory can be established

  - ### validateXPath

    public static void validateXPath(Document document, String xpathString) throws TransformerException
    Validate xpathString is a valid XPath expression
    Parameters:
      `document` - XML Document
      `xpathString` - XPATH String
    Throws:
      `TransformerException` - if expression fails to evaluate

  - ### validateXPath2

    public static void validateXPath2(Document document, String xpathString, String namespaces) throws TransformerException
    Validate xpathString is a valid XPath expression
    Parameters:
      `document` - XML Document
      `xpathString` - XPATH String
      `namespaces` - Space separated set of prefix=namespace
    Throws:
      `TransformerException` - if expression fails to evaluate

  - ### computeAssertionResult

    public static void computeAssertionResult(AssertionResult result, Document doc, String xPathExpression, boolean isNegated)
    Fills result
    Parameters:
      `result` - `AssertionResult`
      `doc` - XML Document
      `xPathExpression` - XPath expression
      `isNegated` - flag whether a non-match should be considered a success

  - ### computeAssertionResultUsingSaxon

    public static void computeAssertionResultUsingSaxon(AssertionResult result, String xmlFile, String xPathQuery, String namespaces, Boolean isNegated) throws net.sf.saxon.s9api.SaxonApiException, FactoryConfigurationError
    Parameters:
      `result` - The result of xpath2 assertion
      `xmlFile` - XML data
      `xPathQuery` - XPath Query
      `namespaces` - Space separated set of prefix=namespace
      `isNegated` - invert result
    Throws:
      `net.sf.saxon.s9api.SaxonApiException` - when the parser has problems with the given xml or xpath query
      `FactoryConfigurationError` - when the parser can not be instantiated

  - ### formatXml

    public static String formatXml(String xml)
    Formats XML
    Parameters:
      `xml` - string to format
    Returns:
      String formatted XML