Class JXPathContextFactory

java.lang.Object
org.apache.commons.jxpath.JXPathContextFactory
Direct Known Subclasses:
JXPathContextFactoryReferenceImpl

public abstract class JXPathContextFactory extends Object
Defines a factory API that enables applications to obtain a JXPathContext instance. To acquire a JXPathContext, first call the static newInstance() method of JXPathContextFactory. This method returns a concrete JXPathContextFactory. Then call newContext(org.apache.commons.jxpath.JXPathContext, java.lang.Object) on that instance. You will rarely need to perform these steps explicitly: usually you can call one of the JXPathContex.newContext methods, which will perform these steps for you.
See Also:
  • Field Details

  • Constructor Details

  • Method Details

    • newInstance

      Obtain a new instance of a JXPathContextFactory. This static method creates a new factory instance. This method uses the following ordered lookup procedure to determine the JXPathContextFactory implementation class to load:
      • Use the org.apache.commons.jxpath.JXPathContextFactory system property.
      • Alternatively, use the JAVA_HOME (the parent directory where jdk is installed)/lib/jxpath.properties for a property file that contains the name of the implementation class keyed on org.apache.commons.jxpath.JXPathContextFactory.
      • Use the Services API (as detailed in the JAR specification), if available, to determine the class name. The Services API will look for a class name in the file META- INF/services/<i>org.apache.commons.jxpath. JXPathContextFactory</i> in jars available to the runtime.
      • Platform default JXPathContextFactory instance.
      Once an application has obtained a reference to a JXPathContextFactory it can use the factory to obtain JXPathContext instances.
      Returns:
      JXPathContextFactory
      Throws:
      JXPathContextFactoryConfigurationError - if the implementation is not available or cannot be instantiated.
    • newContext

      public abstract JXPathContext newContext(JXPathContext parentContext, Object contextBean)
      Creates a new instance of a JXPathContext using the currently configured parameters.
      Parameters:
      parentContext - parent context
      contextBean - Object bean
      Returns:
      JXPathContext
      Throws:
      JXPathContextFactoryConfigurationError - if a JXPathContext cannot be created which satisfies the configuration requested