Class FailOverExecutionControlProvider

java.lang.Object
jdk.jshell.execution.FailOverExecutionControlProvider
All Implemented Interfaces:
ExecutionControlProvider
public class FailOverExecutionControlProvider extends Object implements ExecutionControlProvider
Tries other providers in sequence until one works.
Since:
9

  • Constructor Summary

    Constructors
    Constructor
    Description
    FailOverExecutionControlProvider()
    Create an instance.

  • Method Summary

    Modifier and Type
    Method
    Description
    Map<String,String>
    defaultParameters()
    Create and return the default parameter map for this ExecutionControlProvider.
    ExecutionControl
    generate(ExecutionEnv env, Map<String,String> parameters)
    Create and return a locally executing ExecutionControl instance.
    String
    name()
    The unique name of this ExecutionControlProvider.

    Methods declared in class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    Modifier and Type
    Method
    Description
    protected Object
    clone()
    Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
    boolean
    equals(Object o)
    Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    May cause performance issues, deadlocks and hangs.
    final Class<? extends Object>
    getClass()
    Answers the unique instance of java.lang.Class which represents the class of the receiver.
    int
    hashCode()
    Answers an integer hash code for the receiver.
    final void
    notify()
    Causes one thread which is waiting on the receiver to be made ready to run.
    final void
    notifyAll()
    Causes all threads which are waiting on the receiver to be made ready to run.
    String
    toString()
    Answers a string containing a concise, human-readable description of the receiver.
    final void
    wait()
    Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
    final void
    wait(long time)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
    final void
    wait(long time, int frac)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

  • Constructor Details

  • Method Details

    • name

      public String name()
      The unique name of this ExecutionControlProvider.
      Specified by:
      name in interface ExecutionControlProvider
      Returns:
      "failover"

    • defaultParameters

      public Map<String,String> defaultParameters()
      Create and return the default parameter map for this ExecutionControlProvider. There are ten parameters, "0" through "9", their values are ExecutionControlProvider specification strings, or empty string.
      Specified by:
      defaultParameters in interface ExecutionControlProvider
      Returns:
      a default parameter map

    • generate

      public ExecutionControl generate(ExecutionEnv env, Map<String,String> parameters) throws Throwable
      Create and return a locally executing ExecutionControl instance. At least one parameter should have a spec.
      Specified by:
      generate in interface ExecutionControlProvider
      Parameters:
      env - the execution environment, provided by JShell
      parameters - the modified parameter map.
      Returns:
      the execution engine
      Throws:
      Throwable - if all the given providers fail, the exception that occurred on the first attempt to create the execution engine.