TransferCreditCourseNameAutoCompleteBinaryRequestController.java example

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pyramus-master
package fi.otavanopisto.pyramus.binary.settings;

import java.io.UnsupportedEncodingException;
import java.util.List;
import java.util.Locale;

import org.apache.commons.lang.StringEscapeUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.lucene.queryparser.classic.QueryParser;

import fi.internetix.smvc.SmvcRuntimeException;
import fi.internetix.smvc.controllers.BinaryRequestContext;
import fi.otavanopisto.pyramus.I18N.Messages;
import fi.otavanopisto.pyramus.dao.DAOFactory;
import fi.otavanopisto.pyramus.dao.grading.TransferCreditTemplateCourseDAO;
import fi.otavanopisto.pyramus.domainmodel.base.Subject;
import fi.otavanopisto.pyramus.domainmodel.grading.TransferCreditTemplateCourse;
import fi.otavanopisto.pyramus.framework.BinaryRequestController;
import fi.otavanopisto.pyramus.framework.UserRole;

/** A binary request controller responsible for providing autocomplete
 * for transfer credit course names.
 *
 */
public class TransferCreditCourseNameAutoCompleteBinaryRequestController extends BinaryRequestController {

  /** Processes a binary request.
   * 
   * @param binaryRequestContext The context of the binary request.
   */
  public void process(BinaryRequestContext binaryRequestContext) {
    TransferCreditTemplateCourseDAO transferCreditTemplateCourseDAO = DAOFactory.getInstance().getTransferCreditTemplateCourseDAO();
    
    Locale locale = binaryRequestContext.getRequest().getLocale();

    String text = binaryRequestContext.getString("text");

    StringBuilder resultBuilder = new StringBuilder();
    resultBuilder.append("<ul>");

    if (!StringUtils.isBlank(text)) {
      text = QueryParser.escape(StringUtils.trim(text)) + '*';

      List<TransferCreditTemplateCourse> results = transferCreditTemplateCourseDAO.searchTransferCreditTemplateCoursesBasic(100, 0, text).getResults();
      
      for (TransferCreditTemplateCourse course : results) {
        addResultItem(resultBuilder, course, locale);
      }
    }
    
    resultBuilder.append("</ul>");

    try {
      binaryRequestContext.setResponseContent(resultBuilder.toString().getBytes("UTF-8"), "text/html;charset=UTF-8");
    } catch (UnsupportedEncodingException e) {
      throw new SmvcRuntimeException(e);
    }
  }
  
  /** Returns the user roles allowed to access this controller.
   * 
   * @return The user roles allowed to access this controller.
   */
  public UserRole[] getAllowedRoles() {
    return new UserRole[] { UserRole.USER, UserRole.MANAGER, UserRole.STUDY_PROGRAMME_LEADER, UserRole.ADMINISTRATOR };
  }
  
  private void addResultItem(StringBuilder resultBuilder, TransferCreditTemplateCourse course, Locale locale) {
    resultBuilder
      .append("<li>")
      .append("<span>")
      .append(StringEscapeUtils.escapeHtml(course.getCourseName()))
      .append("</span>");
    
    addHiddenValue(resultBuilder, "courseId", course.getId());
    addHiddenValue(resultBuilder, "subjectId", course.getSubject() != null ? course.getSubject().getId() : null);
    addHiddenValue(resultBuilder, "subjectName", getSubjectText(course.getSubject(), locale));
    addHiddenValue(resultBuilder, "courseLength", course.getCourseLength() != null ? course.getCourseLength().getUnits() : null);
    addHiddenValue(resultBuilder, "courseLengthUnitId", course.getCourseLength() != null ? course.getCourseLength().getUnit().getId() : null);
    addHiddenValue(resultBuilder, "courseLengthUnitName", course.getCourseLength() != null ? course.getCourseLength().getUnit().getName() : null);
    addHiddenValue(resultBuilder, "courseNumber", course.getCourseNumber());
    
    resultBuilder.append("</li>");
  }
  
  private void addHiddenValue(StringBuilder resultBuilder, String name, Object value) {
    String stringValue = value == null ? null : String.valueOf(value);
    
    resultBuilder.append("<input type=\"hidden\" name=\"");
    resultBuilder.append(name);
    resultBuilder.append("\" value=\"");
    
    if (!StringUtils.isBlank(stringValue)) {
      resultBuilder.append(StringEscapeUtils.escapeHtml(stringValue));
    } 
    
    resultBuilder.append("\"/>");
  }
  
  private String getSubjectText(Subject subject, Locale locale) {
    if (subject == null)
      return null;
    
    String subjectName = subject.getName();
    String subjectCode = subject.getCode();
    String subjectEducationType = subject.getEducationType() != null ? subject.getEducationType().getName() : null;
    
    String localizedSubject = subjectName;
    
    if (subjectCode != null && subjectEducationType != null) {
      localizedSubject = Messages.getInstance().getText(locale, 
          "generic.subjectFormatterWithEducationType", new Object[] {
        subjectCode,
        subjectName,
        subjectEducationType
      });
    } else if (subjectEducationType != null) {
      localizedSubject = Messages.getInstance().getText(locale, 
          "generic.subjectFormatterNoSubjectCode", new Object[] {
        subjectName,
        subjectEducationType
      });
    } else if (subjectCode != null) {
      localizedSubject = Messages.getInstance().getText(locale, 
          "generic.subjectFormatterNoEducationType", new Object[] {
        subjectCode,
        subjectName
      });
    }

    return localizedSubject;
  }
}