org.lsst.ccs.subsystem.ocsbridge

Class CCSExecutorWithReturn<T>

java.lang.Object

org.lsst.ccs.subsystem.ocsbridge.CCSExecutorWithReturn<T>

Type Parameters:

T - The return type from execute

Direct Known Subclasses:

CCSExecutor

public abstract class CCSExecutorWithReturn<T>
extends Object

A base class for all CCS command executors.This class is abstract and is extended by specific executors for each supported command.

Author:

tonyj

Constructor Summary

Constructors

Constructor and Description
CCSExecutorWithReturn()

Method Summary

Modifier and Type	Method and Description
protected abstract T	executeAndReturn() Actually perform the command
protected abstract Duration	testPreconditions() Check preconditions, and estimate the command duration.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CCSExecutorWithReturn

public CCSExecutorWithReturn()

Method Detail

testPreconditions

protected abstract Duration testPreconditions()
                                       throws CCSCommand.CCSPreconditionsNotMet

Check preconditions, and estimate the command duration.

Returns:

The estimated duration of the command (can be ZERO)

Throws:

CCSCommand.CCSPreconditionsNotMet - If the preconditions are not met

executeAndReturn

protected abstract T executeAndReturn()
                               throws Exception

Actually perform the command

Returns:

The response

Throws:

Exception - If the command fails.