com.pureinfo.srm.reports.table.data.institute.InstituteQueryAction.java Source code

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Here is the source code for com.pureinfo.srm.reports.table.data.institute.InstituteQueryAction.java

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/**
 * PureInfo Command
 * @(#)InstituteQueryAction.java   1.0 2007-7-18
 * 
 * Copyright(c) 2004-2005, PureInfo Information Technology Corp. Ltd. 
 * All rights reserved, see the license file.
 * 
 * www.pureinfo.com.cn
 */

package com.pureinfo.srm.reports.table.data.institute;

import java.io.IOException;
import java.util.Iterator;
import java.util.List;

import org.apache.struts.action.ActionForward;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.XMLWriter;

import com.pureinfo.ark.content.ArkContentHelper;
import com.pureinfo.ark.interaction.ActionBase;
import com.pureinfo.force.exception.PureException;
import com.pureinfo.srm.org.domain.IOrganizationMgr;
import com.pureinfo.srm.org.model.Organization;

/**
 * <P>
 * Created on 2007-7-18 14:26:09 <BR>
 * Last modified on 2007-7-18
 * </P>
 * TODO describe InstituteQueryAction here ...
 * 
 * @author elmar.chen
 * @version 1.0, 2007-7-18
 * @since Command 1.0
 */
public class InstituteQueryAction extends ActionBase {
    /**
     * @see com.pureinfo.ark.interaction.ActionBase#isLoginNeeded()
     */
    protected boolean isLoginNeeded() {
        return false;
    }

    /**
     * @see com.pureinfo.ark.interaction.ActionBase#executeAction()
     */
    public ActionForward executeAction() throws PureException {
        int nCollegeId = request.getRequiredInt("college", "ID");
        IOrganizationMgr mgr = (IOrganizationMgr) ArkContentHelper.getContentMgrOf(Organization.class);
        List listIns = mgr.getChildren(nCollegeId, true);
        Document sInsJson = makeXML(listIns);
        writeResponse(sInsJson);
        return null;
    }

    private void writeResponse(Document sInsJson) throws PureException {
        try {
            response.setHeader("Cache-Control", "no-cache"); //HTTP 1.1
            response.setHeader("Pragma", "no-cache"); //HTTP 1.0
            response.setDateHeader("Expires", -1);
            response.setDateHeader("max-age", 0);
            response.setContentType("text/xml");
            response.setCharacterEncoding("utf-8");
            XMLWriter writer = new XMLWriter(response.getWriter());
            writer.write(sInsJson);
            writer.close();
        } catch (IOException e) {
            throw new PureException(PureException.FILE_WRITE_FAILED, "failed to write response", e);
        }
    }

    private Document makeXML(List _sListIns) {
        Document doc = DocumentHelper.createDocument();
        Element xRoot = doc.addElement("datas");
        Element inses = xRoot.addElement("inses");
        for (Iterator iter = _sListIns.iterator(); iter.hasNext();) {
            Organization org = (Organization) iter.next();
            int id = org.getId();
            String sName = org.getName();
            Element xIns = inses.addElement("ins");
            xIns.addAttribute("id", Integer.toString(id));
            xIns.addAttribute("name", sName);
            xIns.addAttribute("code", org.getCode());
        }
        return doc;
    }

}