Package edu.isi.pegasus.planner.selector.replica

Class ReplicaSelectorFactory

java.lang.Object
edu.isi.pegasus.planner.selector.replica.ReplicaSelectorFactory
public class ReplicaSelectorFactory extends Object
A factory class to load the appropriate type of Replica Selector, as specified by the user at runtime in properties. Each invocation of the factory results in a ReplicaSelector being instantiated.
Version:
$Revision$
Author:
Karan Vahi

  • Field Details

    • DEFAULT_PACKAGE_NAME

      public static final String DEFAULT_PACKAGE_NAME
      The default package where the all the implementing classes provided with the VDS reside.
      See Also:

    • DEFAULT_REPLICA_SELECTOR

      public static final String DEFAULT_REPLICA_SELECTOR
      The name of the class in the DEFAULT package, that corresponds to the default replica selector.
      See Also:

  • Constructor Details

    • ReplicaSelectorFactory

      public ReplicaSelectorFactory()

  • Method Details

    • loadInstance

      public static ReplicaSelector loadInstance() throws ReplicaSelectorFactoryException
      A no hassle factory method that loads the replica selector specified in the properties. The properties are obtained from the property singleton. A default replica selector is loaded if property is not specified in the properties.
      Returns:
      the instance of the class implementing this interface.
      Throws:
      ReplicaSelectorFactoryException - that chains any error that might occur during the instantiation
      See Also:

    • loadInstance

      public static ReplicaSelector loadInstance(edu.isi.pegasus.planner.common.PegasusProperties properties) throws ReplicaSelectorFactoryException
      Loads the implementing class corresponding to the mode specified by the user at runtime in the properties file. A default replica selector is loaded if property is not specified in the properties.
      Parameters:
      properties - the PegasusProperties object containing all the properties required by Pegasus.
      Returns:
      the instance of the class implementing this interface.
      Throws:
      ReplicaSelectorFactoryException - that chains any error that might occur during the instantiation
      See Also:

    • loadInstance

      public static ReplicaSelector loadInstance(edu.isi.pegasus.planner.common.PegasusProperties properties, String className) throws ReplicaSelectorFactoryException
      Loads the implementing class corresponding to the class. If the package name is not specified with the class, then class is assumed to be in the DEFAULT_PACKAGE. The properties object passed should not be null.
      Parameters:
      className - the name of the class that implements the mode. It is the name of the class, not the complete name with package. That is added by itself.
      properties - the PegasusProperties object containing all the properties required by Pegasus.
      Returns:
      the instance of the class implementing this interface.
      Throws:
      ReplicaSelectorFactoryException - that chains any error that might occur during the instantiation
      See Also: