org.springframework.integration.scripting

Class AbstractScriptExecutingMessageProcessor<T>

java.lang.Object

org.springframework.integration.scripting.AbstractScriptExecutingMessageProcessor<T>

All Implemented Interfaces:

Aware, BeanClassLoaderAware, BeanFactoryAware, MessageProcessor<T>

Direct Known Subclasses:

GroovyCommandMessageProcessor, GroovyScriptExecutingMessageProcessor, ScriptExecutingMessageProcessor

public abstract class AbstractScriptExecutingMessageProcessor<T>
extends Object
implements MessageProcessor<T>, BeanClassLoaderAware, BeanFactoryAware

Base MessageProcessor for scripting implementations to extend.

Since:

2.0

Author:

Mark Fisher, Stefan Reuter

Field Summary

Fields

Modifier and Type	Field and Description
protected ClassLoader	beanClassLoader
protected BeanFactory	beanFactory

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractScriptExecutingMessageProcessor()
protected	AbstractScriptExecutingMessageProcessor(ScriptVariableGenerator scriptVariableGenerator)

Method Summary

Methods

Modifier and Type	Method and Description
protected abstract T	executeScript(ScriptSource scriptSource, Map<String,Object> variables) Subclasses must implement this method.
protected abstract ScriptSource	getScriptSource(Message<?> message) Subclasses must implement this method to create a script source, optionally using the message to locate or create the script.
T	processMessage(Message<?> message) Executes the script and returns the result.
void	setBeanClassLoader(ClassLoader classLoader)
void	setBeanFactory(BeanFactory beanFactory)

Methods inherited from class java.lang.Object

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

Field Detail

beanClassLoader

protected volatile ClassLoader beanClassLoader

beanFactory

protected volatile BeanFactory beanFactory

Constructor Detail

AbstractScriptExecutingMessageProcessor

protected AbstractScriptExecutingMessageProcessor()

AbstractScriptExecutingMessageProcessor

protected AbstractScriptExecutingMessageProcessor(ScriptVariableGenerator scriptVariableGenerator)

Method Detail

processMessage

public final T processMessage(Message<?> message)

Executes the script and returns the result.

Specified by:

processMessage in interface MessageProcessor<T>

Parameters:

message - The message to process.

Returns:

The result.

setBeanClassLoader

public void setBeanClassLoader(ClassLoader classLoader)

Specified by:

setBeanClassLoader in interface BeanClassLoaderAware

setBeanFactory

public void setBeanFactory(BeanFactory beanFactory)
                    throws BeansException

Specified by:

setBeanFactory in interface BeanFactoryAware

Throws:

BeansException

getScriptSource

protected abstract ScriptSource getScriptSource(Message<?> message)

Subclasses must implement this method to create a script source, optionally using the message to locate or create the script.

Parameters:

message - the message being processed

Returns:

a ScriptSource to use to create a script

executeScript

protected abstract T executeScript(ScriptSource scriptSource,
              Map<String,Object> variables)
                            throws Exception

Subclasses must implement this method. In doing so, the execution context for the script should be populated with the provided script variables.

Parameters:

scriptSource - The script source.

variables - The variables.

Returns:

The result of the execution.

Throws:

Exception - Any Exception.