org.openmrs.web.servlet.SampleFlowsheetServlet.java Source code

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Here is the source code for org.openmrs.web.servlet.SampleFlowsheetServlet.java

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/**
 * This Source Code Form is subject to the terms of the Mozilla Public License,
 * v. 2.0. If a copy of the MPL was not distributed with this file, You can
 * obtain one at http://mozilla.org/MPL/2.0/. OpenMRS is also distributed under
 * the terms of the Healthcare Disclaimer located at http://openmrs.org/license.
 *
 * Copyright (C) OpenMRS Inc. OpenMRS is a registered trademark and the OpenMRS
 * graphic logo is a trademark of OpenMRS Inc.
 */
package org.openmrs.web.servlet;

import java.io.IOException;
import java.util.Calendar;
import java.util.List;
import java.util.Locale;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.openmrs.Concept;
import org.openmrs.ConceptName;
import org.openmrs.Obs;
import org.openmrs.Patient;
import org.openmrs.api.context.Context;
import org.openmrs.util.PrivilegeConstants;
import org.openmrs.web.WebConstants;

public class SampleFlowsheetServlet extends HttpServlet {

    private static final long serialVersionUID = -2794221430160461220L;

    private Log log = LogFactory.getLog(this.getClass());

    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        log.debug("Getting sample flowsheet");

        response.setContentType("text/html");
        HttpSession session = request.getSession();

        String pid = request.getParameter("pid");
        if (pid == null || pid.length() == 0) {
            session.setAttribute(WebConstants.OPENMRS_ERROR_ATTR, "error.null");
            return;
        }

        if (!Context.isAuthenticated() || !Context.hasPrivilege(PrivilegeConstants.GET_PATIENTS)
                || !Context.hasPrivilege(PrivilegeConstants.GET_OBS)) {
            session.setAttribute(WebConstants.OPENMRS_ERROR_ATTR, "Privileges required: "
                    + PrivilegeConstants.GET_PATIENTS + " and " + PrivilegeConstants.GET_OBS);
            session.setAttribute(WebConstants.OPENMRS_LOGIN_REDIRECT_HTTPSESSION_ATTR,
                    request.getRequestURI() + "?" + request.getQueryString());
            response.sendRedirect(request.getContextPath() + "/login.htm");
            return;
        }

        ServletOutputStream out = response.getOutputStream();

        Integer patientId = Integer.parseInt(pid);
        Patient patient = Context.getPatientService().getPatient(patientId);
        List<Obs> obsList = Context.getObsService().getObservationsByPerson(patient);

        if (obsList == null || obsList.size() < 1) {
            out.print("No observations found");
            return;
        }

        out.println("<style>");
        out.println(".header { font-family:Arial; font-weight:bold; text-align: center; font-size: 1.5em;}");
        out.println(
                ".label { font-family:Arial; text-align:right; color:#808080; font-style:italic; font-size: 0.6em; vertical-align: top;}");
        out.println(".value { font-family:Arial; text-align:left; vertical-align:top; }");
        out.println("</style>");
        out.println("<table cellspacing=0 cellpadding=3>");
        Locale locale = Context.getLocale();
        Calendar date = Calendar.getInstance();
        date.set(1900, Calendar.JANUARY, 1);
        Calendar obsDate = Calendar.getInstance();
        for (Obs obs : obsList) {
            obsDate.setTime(obs.getObsDatetime());
            if (Math.abs(obsDate.getTimeInMillis() - date.getTimeInMillis()) > 86400000) {
                date = obsDate;
                out.println("<tr><td class=header colspan=2>" + Context.getDateFormat().format(date.getTime())
                        + "</td></tr>");
            }
            StringBuilder s = new StringBuilder("<tr><td class=label>");
            s.append(getName(obs, locale));
            s.append("</td><td class=value>");
            s.append(getValue(obs, locale));
            s.append("</td></tr>");
            out.println(s.toString());
        }
        out.println("</table>");
    }

    private String getName(Obs obs, Locale locale) {
        return getName(obs.getConcept(), locale);
    }

    private String getName(Concept concept, Locale locale) {
        String foundName = "";
        ConceptName shortName = concept.getShortestName(locale, false);
        if (shortName != null) {
            foundName = shortName.getName();
        } else {
            ConceptName name = concept.getName(locale);
            if (name != null) {
                foundName = name.getName();
            }
        }
        return foundName;
    }

    private String getValue(Obs obs, Locale locale) {
        return obs.getValueAsString(locale);
    }
}