Constructor Detail

• XPathFactoryImpl

  public XPathFactoryImpl​()

  Default constructor: this creates a Configuration as well as creating the XPathFactory. Any documents accessed using this XPathFactory must be built using this same Configuration.

• XPathFactoryImpl

  public XPathFactoryImpl​(Configuration config)

  Constructor using a user-supplied Configuration. This constructor is useful if the document to be queried already exists, as it allows the configuration associated with the document to be used with this XPathFactory.

  Parameters:

  config - the Saxon configuration

Method Detail

• makeConfiguration

  protected Configuration makeConfiguration​()

• getConfiguration

  public Configuration getConfiguration​()

  Get the Configuration object used by this XPathFactory

  Returns:

  the Saxon configuration

• isObjectModelSupported

  public boolean isObjectModelSupported​(java.lang.String model)

  Test whether a given object model is supported. Returns true if the object model is the Saxon object model, DOM, JDOM, DOM4J, or XOM

  Specified by:

  isObjectModelSupported in class javax.xml.xpath.XPathFactory

  Parameters:

  model - The URI identifying the object model.

  Returns:

  true if the object model is one of the following (provided that the supporting JAR file is available on the classpath) NamespaceConstant.OBJECT_MODEL_SAXON, XPathConstants.DOM_OBJECT_MODEL, NamespaceConstant.OBJECT_MODEL_JDOM, or NamespaceConstant.OBJECT_MODEL_XOM, or NamespaceConstant.OBJECT_MODEL_DOM4J. Saxon also allows user-defined external object models to be registered with the Configuration, and this method will return true in respect of any such model.

• setFeature

  public void setFeature​(java.lang.String feature,
                         boolean b)
                  throws javax.xml.xpath.XPathFactoryConfigurationException

  Set a feature of this XPath implementation. The only features currently recognized are:

  • XMLConstants.FEATURE_SECURE_PROCESSING
  • FeatureKeys.SCHEMA_VALIDATION: requests schema validation of source documents. The property is rejected if the configuration is not schema-aware.

  Specified by:

  setFeature in class javax.xml.xpath.XPathFactory

  Parameters:

  feature - a URI identifying the feature

  b - true to set the feature on, false to set it off

  Throws:

  javax.xml.xpath.XPathFactoryConfigurationException - if the feature name is not recognized

• getFeature

  public boolean getFeature​(java.lang.String feature)
                     throws javax.xml.xpath.XPathFactoryConfigurationException

  Get a feature of this XPath implementation. The only features currently recognized are:

  • FEATURE_SECURE_PROCESSING
  • FeatureKeys.SCHEMA_VALIDATION: requests schema validation of source documents.

  Specified by:

  getFeature in class javax.xml.xpath.XPathFactory

  Parameters:

  feature - a URI identifying the feature

  Returns:

  true if the feature is on, false if it is off

  Throws:

  javax.xml.xpath.XPathFactoryConfigurationException - if the feature name is not recognized

• setXPathVariableResolver

  public void setXPathVariableResolver​(javax.xml.xpath.XPathVariableResolver xPathVariableResolver)

  Set a resolver for XPath variables. This will be used to obtain the value of any variable referenced in an XPath expression. The variable resolver must be allocated before the expression is compiled, but it will only be called when the expression is evaluated.

  Specified by:

  setXPathVariableResolver in class javax.xml.xpath.XPathFactory

  Parameters:

  xPathVariableResolver - The object used to resolve references to variables.

• setXPathFunctionResolver

  public void setXPathFunctionResolver​(javax.xml.xpath.XPathFunctionResolver xPathFunctionResolver)

  Set a resolver for XPath functions. This will be used to obtain an implementation of any external function referenced in an XPath expression. This is not required for system functions, Saxon extension functions, constructor functions named after types, or extension functions bound using a namespace that maps to a Java class.

  Specified by:

  setXPathFunctionResolver in class javax.xml.xpath.XPathFactory

  Parameters:

  xPathFunctionResolver - The object used to resolve references to external functions.

• newXPath

  public javax.xml.xpath.XPath newXPath​()

  Create an XPath evaluator

  Specified by:

  newXPath in class javax.xml.xpath.XPathFactory

  Returns:

  an XPath object, which can be used to compile and execute XPath expressions.