XPathHelper.java 文件源码

/**
 * Create a new {@link XPath} with the passed variable resolver, function
 * resolver and namespace context.
 *
 * @param aXPathFactory
 *        The XPath factory object to use. May not be <code>null</code>.
 * @param aVariableResolver
 *        Variable resolver to be used. May be <code>null</code>.
 * @param aFunctionResolver
 *        Function resolver to be used. May be <code>null</code>.
 * @param aNamespaceContext
 *        Namespace context to be used. May be <code>null</code>.
 * @return The created non-<code>null</code> {@link XPath} object
 */
@Nonnull
public static XPath createNewXPath (@Nonnull final XPathFactory aXPathFactory,
                                    @Nullable final XPathVariableResolver aVariableResolver,
                                    @Nullable final XPathFunctionResolver aFunctionResolver,
                                    @Nullable final NamespaceContext aNamespaceContext)
{
  ValueEnforcer.notNull (aXPathFactory, "XPathFactory");

  final XPath aXPath = aXPathFactory.newXPath ();
  if (aVariableResolver != null)
    aXPath.setXPathVariableResolver (aVariableResolver);
  if (aFunctionResolver != null)
    aXPath.setXPathFunctionResolver (aFunctionResolver);
  if (aNamespaceContext != null)
    aXPath.setNamespaceContext (aNamespaceContext);
  return aXPath;
}