uncontrolledtask.java

esri的ArcGIS Server超级学习模板程序（for java）

package com.esri.solutions.jitk.web.tasks;

import org.apache.log4j.Logger;

import com.esri.adf.web.data.WebContext;
import com.esri.adf.web.data.WebContextInitialize;
import com.esri.adf.web.data.tasks.TaskInfo;
import com.esri.adf.web.data.tasks.TaskInfoBean;

/**
 * Base class for a task that does not control their own rendering
 */
@SuppressWarnings("serial")
public class UncontrolledTask extends ErrorProducingTask 
	implements IWebContextAware, WebContextInitialize, TaskInfoBean {
	private static final Logger _logger = Logger.getLogger(UncontrolledTask.class.getName());
	
	protected WebContext _context = null;
	protected TaskInfo _taskInfo = null;
	
	public WebContext getContext() {
		return _context;
	}
	
	public void init(WebContext context) {
		setContext(context);
	}

	public void setContext(WebContext context) {	
		if(context != null) {
		    _context = context;	
		}
		else {
			_logger.warn("WebContext not set, disabling");			
			disableTask();
		}	
	}
	
	public TaskInfo getTaskInfo() {		
		if (_context == null) {
			_logger.warn("WebContext not set, disabling");		
			disableTask();
		}
		
		return _taskInfo;
	}

	public void setTaskInfo(TaskInfo taskInfo) {
		_taskInfo = taskInfo;
	}
	
	public void destroy() {
		_logger.debug("Destroying");
		_context = null;	
	}
	
	protected void disableTask() {
		if (_taskInfo != null) {
			_taskInfo.getTaskDescriptor().setDisabled(true);
		}
		else {
			_logger.warn("taskInfo not set, disabling not possible");
		}		
	}
}