baseaction.java

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package cn.myapps.base.action;

import java.util.Iterator;
import java.util.Map;

import cn.myapps.base.dao.DataPackage;
import cn.myapps.base.dao.ValueObject;
import cn.myapps.base.ejb.BaseProcess;
import cn.myapps.constans.Environment;
import cn.myapps.constans.Web;
import cn.myapps.core.user.action.WebUser;
import cn.myapps.core.user.ejb.UserVO;

import com.opensymphony.webwork.ServletActionContext;
import com.opensymphony.xwork.Action;
import com.opensymphony.xwork.ActionContext;
import com.opensymphony.xwork.ActionSupport;

/**
 * BaseAction class.
 * 
 * @author huangnaizhou
 * @since JDK1.4
 */
public abstract class BaseAction extends ActionSupport implements Action {
	/** valueobject */
	private ValueObject content = null;

	/** DataPackage */
	private DataPackage datas = null;

	/** BaseProcess */
	protected BaseProcess proxy = null;

	protected String[] _selects = null;

	protected String application;

	private static final ThreadLocal _params = new ThreadLocal();

	/**
	 * BaseAction constructor
	 * 
	 * @param proxy
	 *            BaseProcess
	 * @param content
	 *            ValueObject
	 */
	public BaseAction(BaseProcess proxy, ValueObject content) {
		this.proxy = proxy;
		this.content = content;

	}

	/**
	 * Get WebUser Object.
	 * 
	 * @return WebUser Object user
	 * @throws Exception
	 */
	public WebUser getUser() throws Exception {
		Map session = getContext().getSession();
		WebUser user = null;
		if (session == null || session.get(Web.SESSION_ATTRIBUTE_USER) == null) {
			UserVO vo = new UserVO();
			vo.getId();
			vo.setName("GUEST");
			vo.setLoginno("guest");
			vo.setLoginpwd("");
			vo.setRoles(null);
			vo.setEmail("");
			vo.setLanguageType(1);
			user = new WebUser(vo);

		} else {
			user = (WebUser) session.get(Web.SESSION_ATTRIBUTE_USER);
		}
		return user;
	}

	public String doBack() throws Exception {
		return null;
	}

	/**
	 * doNew method is executed.
	 * 
	 * @return If the action execution was successful.return "SUCCESS".Show an
	 *         success view .
	 *         <p>
	 *         If the action execution was a failure. return "ERROR".Show an
	 *         error view, possibly asking the user to retry entering data.
	 *         <p>
	 *         The "INPUT" is also used if the given input params are invalid,
	 *         meaning the user should try providing input again.
	 * 
	 * @throws Exception
	 */
	public String doNew() throws Exception {

		return SUCCESS;
	}

	/**
	 * edit Value Object
	 * 
	 * @return If the action execution was successful.return "SUCCESS".Show an
	 *         success view .
	 *         <p>
	 *         If the action execution was a failure. return "ERROR".Show an
	 *         error view, possibly asking the user to retry entering data.
	 *         <p>
	 *         The "INPUT" is also used if the given input params are invalid,
	 *         meaning the user should try providing input again.
	 * 
	 * @throws Exception
	 */
	public String doEdit() throws Exception {
		Map params = getContext().getParameters();
		Object obj = params.get("id");
		String id = ((String[]) obj)[0];
		ValueObject contentVO = proxy.doView(id);
		setContent(contentVO);

		return SUCCESS;
	}

	/**
	 * save Value Object
	 * 
	 * @return If the action execution was successful.return "SUCCESS".Show an
	 *         success view .
	 *         <p>
	 *         If the action execution was a failure. return "ERROR".Show an
	 *         error view, possibly asking the user to retry entering data.
	 *         <p>
	 *         The "INPUT" is also used if the given input params are invalid,
	 *         meaning the user should try providing input again.
	 * 
	 * @throws Exception
	 */
	public String doSave() throws Exception {
		if (content.getId() == null || content.getId().equals("")) {
			proxy.doCreate(content);
		} else {
			proxy.doUpdate(content);
		}
		return SUCCESS;
	}

	/**
	 * show a Value Object View .
	 * 
	 * @return If the action execution was successful.return "SUCCESS".Show an
	 *         success view .
	 *         <p>
	 *         If the action execution was a failure. return "ERROR".Show an
	 *         error view, possibly asking the user to retry entering data.
	 *         <p>
	 *         The "INPUT" is also used if the given input params are invalid,
	 *         meaning the user should try providing input again.
	 * 
	 * @throws Exception
	 */
	public String doView() throws Exception {
		Map params = getContext().getParameters();
		String[] ids = (String[]) (params.get("id"));
		String id = null;
		if (ids != null && ids.length > 0) {
			id = ids[0];
		}

		ValueObject contentVO = proxy.doView(id);
		setContent(contentVO);

		return SUCCESS;
	}

	/**
	 * delete value object by _selects
	 * 
	 * @return If the action execution was successful.return "SUCCESS".Show an
	 *         success view .
	 *         <p>
	 *         If the action execution was a failure. return "ERROR".Show an
	 *         error view, possibly asking the user to retry entering data.
	 *         <p>
	 *         The "INPUT" is also used if the given input params are invalid,
	 *         meaning the user should try providing input again.
	 * 
	 * @throws Exception
	 */
	public String doDelete() throws Exception {
		if (_selects != null)
			proxy.doRemove(_selects);
		/*
		 * for (int i = 0; i < _selects.length; i++) { String id = _selects[i];
		 * try{ proxy.doRemove(id); }catch (Exception e){l e.printStackTrace(); } }
		 */
		return SUCCESS;
	}

	/**
	 * a list of datas
	 * 
	 * @return If the action execution was successful.return "SUCCESS".Show an
	 *         success view .
	 *         <p>
	 *         If the action execution was a failure. return "ERROR".Show an
	 *         error view, possibly asking the user to retry entering data.
	 *         <p>
	 *         The "INPUT" is also used if the given input params are invalid,
	 *         meaning the user should try providing input again.
	 * 
	 * @throws Exception
	 */
	public String doList() throws Exception {
		ParamsTable params = getParams();
		WebUser user = getUser();
		datas = this.proxy.doQuery(params, user);
		return SUCCESS;
	}

	/**
	 * doDefault method is executed.
	 * 
	 * @return If the action execution was successful.return "SUCCESS".Show an
	 *         success view .
	 *         <p>
	 *         If the action execution was a failure. return "ERROR".Show an
	 *         error view, possibly asking the user to retry entering data.
	 *         <p>
	 *         The "INPUT" is also used if the given input params are invalid,
	 *         meaning the user should try providing input again.
	 * 
	 * @throws Exception
	 */
	public String doDefault() throws Exception {
		return INPUT;
	}

	/**
	 * Get the ActionContext
	 * 
	 * @return ActionContext
	 */
	public static ActionContext getContext() {
		ActionContext context = ActionContext.getContext();
		return context;
	}

	public Environment getEnvironment() {
		String ctxPath = ServletActionContext.getRequest().getContextPath();
		Environment evt = (Environment) ActionContext.getContext()
				.getApplication().get(Environment.class.getName());
		evt.setContextPath(ctxPath);
		return evt;
	}

	public String execute() throws Exception {
		// TODO Auto-generated method stub
		return null;
	}

	/**
	 * Get the VallueObject.
	 * 
	 * @return Returns the content.
	 */
	public ValueObject getContent() {
		return content;
	}

	/**
	 * Set the ValueObject
	 * 
	 * @param content
	 *            The content to set.
	 */
	public void setContent(ValueObject content) {
		this.content = content;
	}

	/**
	 * Get the ParamsTable
	 * 
	 * @return ParamsTable
	 */
	public ParamsTable getParams() {
		ParamsTable pm = null;
		if (_params.get() != null) {
			pm = (ParamsTable) _params.get();
		} else {
			synchronized (this) {
				pm = new ParamsTable();
				Map m = getContext().getParameters();
				Iterator iter = m.keySet().iterator();
				while (iter.hasNext()) {
					String name = (String) iter.next();
					Object obj = m.get(name);
					if (obj instanceof String[] && ((String[]) obj).length > 0) {
						String tmp[] = (String[]) obj;
						pm.setParameter(name, tmp[0]);
					} else {
						pm.setParameter(name, obj + "");
					}
				}
				// set the application param to ParamsTable
				if (getApplication() != null) {
					pm.setParameter("application", getApplication());
				}

				if (pm.getParameter("_pagelines") == null) {
					pm.setParameter("_pagelines", Web.DEFAULT_LINES_PER_PAGE);
				}
			}
		}

		return pm;
	}

	/**
	 * Get the DataPackage
	 * 
	 * @return the DataPackage
	 */
	public DataPackage getDatas() {
		return datas;
	}

	public void setDatas(DataPackage datas) {
		this.datas = datas;
	}

	/**
	 * Get the selects.
	 * 
	 * @return the selects.
	 */
	public String[] get_selects() {
		return _selects;
	}

	/**
	 * Set the selects.
	 * 
	 * @param selects
	 * 
	 */
	public void set_selects(String[] selects) {
		this._selects = selects;
	}

	public String getApplication() {
		if (application != null && application.trim().length() > 0) {
			return application;
		} else {
			return (String) getContext().getSession().get("APPLICATION");
		}
	}

	public void setApplication(String application) throws Exception {
		this.application = application;
		getContent().setApplicationid(application);
	}

}