nyla.solutions.global.patterns.aop.TransformationAroundCommandAdvice Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of nyla.solutions.global Show documentation

Nyla Solutions Global Java API provides support for basic application utilities (application configuration, data encryption, debugger and text processing).

The newest version!

package nyla.solutions.global.patterns.aop;

import nyla.solutions.global.patterns.command.Command;
import nyla.solutions.global.util.Organizer;

import org.aspectj.lang.ProceedingJoinPoint;

public class TransformationAroundCommandAdvice
{
	/**
	 * transform the arguments and return for a join point
	 * @param proceedingJoinPoint
	 * @return
	 * @throws Throwable
	 */
	public Object transform(ProceedingJoinPoint proceedingJoinPoint) throws Throwable 
	{
		Object[] arguments = proceedingJoinPoint.getArgs();
		if(beforeCommand != null)
		{
			Object inputArgument = arguments;
			
			if(arguments != null && arguments.length == 1)
			{
				//only use a single argument
				inputArgument = arguments[0];
			}
			
			Object resultArguments = beforeCommand.execute(inputArgument);
			
			arguments = Organizer.toArray(resultArguments);
			
		}
		
	    // proceeding processing and get results
	    Object retVal = proceedingJoinPoint.proceed(arguments);
	    
	    
	    if(afterCommand != null)
	    {
	    	retVal = afterCommand.execute(retVal);
	    }
	    
	    return retVal;
	}// ------------------------------------------------
	
	/**
	 * @return the beforeCommand
	 */
	public Command getBeforeCommand()
	{
		return beforeCommand;
	}
	/**
	 * @param beforeCommand the beforeCommand to set
	 */
	public void setBeforeCommand(Command beforeCommand)
	{
		this.beforeCommand = beforeCommand;
	}
	/**
	 * @return the afterCommand
	 */
	public Command getAfterCommand()
	{
		return afterCommand;
	}
	/**
	 * @param afterCommand the afterCommand to set
	 */
	public void setAfterCommand(Command afterCommand)
	{
		this.afterCommand = afterCommand;
	}

	private Command beforeCommand = null;
	private Command afterCommand = null;
	

}