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()
    Creates and returns a copy of this object.
    boolean
    equals(Object obj)
    Indicates whether some other object is "equal to" this one.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    Finalization is deprecated and subject to removal in a future release.
    final Class<?>
    getClass()
    Returns the runtime class of this Object.
    int
    hashCode()
    Returns a hash code value for this object.
    final void
    notify()
    Wakes up a single thread that is waiting on this object's monitor.
    final void
    notifyAll()
    Wakes up all threads that are waiting on this object's monitor.
    String
    toString()
    Returns a string representation of the object.
    final void
    wait()
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
    final void
    wait(long timeoutMillis)
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
    final void
    wait(long timeoutMillis, int nanos)
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

  • 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.