Command (JavaLite - Async Framework for Offline Processing 3.3-j11 API)

java.lang.Object
- org.javalite.async.Command

```
public abstract class Command
extends Object
```
Super class of all commands. Only the method execute() is to be provided by subclasses to do real application work.

Author:

Igor Polevoy on 4/4/15.

Constructor Summary

Constructors
Constructor Description

Command()

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract void`	`execute()`	Subclasses are to provide implementation of this method to get application-specific work done.
`static <T extends Command> T`	`fromBytes(byte[] bytes)`
`static <T extends Command> T`	`fromXml(String commandXml)`	Method used by framework to de-serialize a command from XML.
`String`	`getJMSMessageID()`
`void`	`setJMSMessageID(String jmsMessageId)`
`byte[]`	`toBytes()`	Flattens(serializes, dehydrates, etc.) this instance to a binary representation.
`String`	`toXml()`	Serializes this object into XML.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Command
```
public Command()
```
- Method Detail
  - fromXml
```
public static <T extends Command> T fromXml(String commandXml)
```
    Method used by framework to de-serialize a command from XML.
    
    Parameters:
    
    commandXml - XML representation of a command.
    
    Returns:
    
    new instance of a command initialized with data from commandXml argument.
  - execute
```
public abstract void execute()
```
    Subclasses are to provide implementation of this method to get application-specific work done.
  - toXml
```
public final String toXml()
```
    Serializes this object into XML. The output is used by fromXml(String) to de-serialize a command after it passes through messaging broker.
    
    Returns:
    
    XML representation of this instance.
  - toBytes
```
public byte[] toBytes()
               throws IOException
```
    Flattens(serializes, dehydrates, etc.) this instance to a binary representation.
    
    Returns:
    
    a binary representation
    
    Throws:
    
    IOException
  - fromBytes
```
public static <T extends Command> T fromBytes(byte[] bytes)
                                       throws IOException
```
    Throws:
    
    IOException
  - getJMSMessageID
```
public String getJMSMessageID()
```
  - setJMSMessageID
```
public void setJMSMessageID(String jmsMessageId)
```