Examples of com.google.appengine.api.datastore.Query.addFilter()

Package com.google.appengine.api.datastore

Class com.google.appengine.api.datastore.Query

Examples of com.google.appengine.api.datastore.Query.addFilter()

com.google.appengine.api.datastore.Query.addFilter()
.com/appengine/docs/java/datastore"> datastore documentation. @return {@code this} (for chaining) @throws NullPointerException If {@code propertyName} or {@code operator}is null. @throws IllegalArgumentException If {@code value} is not of atype supported by the datastore. See {@link DataTypeUtils#isSupportedType(Class)}. Note that unlike {@link Entity#setProperty(String,Object)}, you cannot provide a {@link Collection} containing instances of supported typesto this method. @deprecated Use {@link #setFilter(Filter)}

  private Key makeParentKey(SectionInformationObject sio) {
    Query q = new Query(COURSE_KIND);
    q.setKeysOnly();
    q.addFilter(DEPARTMENT_ID_PROPERTY, FilterOperator.EQUAL,
        sio.getDepartmentId());
    q.addFilter(COURSE_ID_PROPERTY, FilterOperator.EQUAL, sio.getCourseId());
    PreparedQuery pq = datastore.prepare(q);
    return pq.asSingleEntity().getKey();
  }


  private Key makeParentKey(BookInformationObject bio) {

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  }


  private Key makeParentKey(BookInformationObject bio) {
    Query q = new Query(DEPARTMENT_KIND);
    q.setKeysOnly();
    q.addFilter(DEPARTMENT_ID_PROPERTY, FilterOperator.EQUAL,
        bio.getDepartmentId());
    q.addFilter(COURSE_ID_PROPERTY, FilterOperator.EQUAL, bio.getCourseId());
    q.addFilter(SECTION_ID_PROPERTY, FilterOperator.EQUAL,
        bio.getSectionId());
    PreparedQuery pq = datastore.prepare(q);

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  private Key makeParentKey(BookInformationObject bio) {
    Query q = new Query(DEPARTMENT_KIND);
    q.setKeysOnly();
    q.addFilter(DEPARTMENT_ID_PROPERTY, FilterOperator.EQUAL,
        bio.getDepartmentId());
    q.addFilter(COURSE_ID_PROPERTY, FilterOperator.EQUAL, bio.getCourseId());
    q.addFilter(SECTION_ID_PROPERTY, FilterOperator.EQUAL,
        bio.getSectionId());
    PreparedQuery pq = datastore.prepare(q);
    return pq.asSingleEntity().getKey();
  }

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    Query q = new Query(DEPARTMENT_KIND);
    q.setKeysOnly();
    q.addFilter(DEPARTMENT_ID_PROPERTY, FilterOperator.EQUAL,
        bio.getDepartmentId());
    q.addFilter(COURSE_ID_PROPERTY, FilterOperator.EQUAL, bio.getCourseId());
    q.addFilter(SECTION_ID_PROPERTY, FilterOperator.EQUAL,
        bio.getSectionId());
    PreparedQuery pq = datastore.prepare(q);
    return pq.asSingleEntity().getKey();
  }

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    return pq.asSingleEntity().getKey();
  }


  public DepartmentInformationObject queryDepartmentFromId(String departmentId) {
    Query q = new Query(DEPARTMENT_KIND);
    q.addFilter(DEPARTMENT_ID_PROPERTY, FilterOperator.EQUAL, departmentId);
    PreparedQuery pq = datastore.prepare(q);
    Entity e = pq.asSingleEntity();
    if (e == null)
      return null;
    return getDepartmentFromEntity(e);

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  }


  public CourseInformationObject queryCourseFromId(String departmentId,
      String courseId) {
    Query q = new Query(COURSE_KIND);
    q.addFilter(DEPARTMENT_ID_PROPERTY, FilterOperator.EQUAL, departmentId);
    q.addFilter(COURSE_ID_PROPERTY, FilterOperator.EQUAL, courseId);
    PreparedQuery pq = datastore.prepare(q);
    Entity e = pq.asSingleEntity();
    if (e == null)
      return null;

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  public CourseInformationObject queryCourseFromId(String departmentId,
      String courseId) {
    Query q = new Query(COURSE_KIND);
    q.addFilter(DEPARTMENT_ID_PROPERTY, FilterOperator.EQUAL, departmentId);
    q.addFilter(COURSE_ID_PROPERTY, FilterOperator.EQUAL, courseId);
    PreparedQuery pq = datastore.prepare(q);
    Entity e = pq.asSingleEntity();
    if (e == null)
      return null;
    return getCourseFromEntity(e);

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  }


  public SectionInformationObject querySectionFromId(String departmentId,
      String courseId, String sectionId) {
    Query q = new Query(SECTION_KIND);
    q.addFilter(DEPARTMENT_ID_PROPERTY, FilterOperator.EQUAL, departmentId);
    q.addFilter(COURSE_ID_PROPERTY, FilterOperator.EQUAL, courseId);
    q.addFilter(SECTION_ID_PROPERTY, FilterOperator.EQUAL, sectionId);
    PreparedQuery pq = datastore.prepare(q);
    Entity e = pq.asSingleEntity();
    if (e == null)

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  public SectionInformationObject querySectionFromId(String departmentId,
      String courseId, String sectionId) {
    Query q = new Query(SECTION_KIND);
    q.addFilter(DEPARTMENT_ID_PROPERTY, FilterOperator.EQUAL, departmentId);
    q.addFilter(COURSE_ID_PROPERTY, FilterOperator.EQUAL, courseId);
    q.addFilter(SECTION_ID_PROPERTY, FilterOperator.EQUAL, sectionId);
    PreparedQuery pq = datastore.prepare(q);
    Entity e = pq.asSingleEntity();
    if (e == null)
      return null;

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  public SectionInformationObject querySectionFromId(String departmentId,
      String courseId, String sectionId) {
    Query q = new Query(SECTION_KIND);
    q.addFilter(DEPARTMENT_ID_PROPERTY, FilterOperator.EQUAL, departmentId);
    q.addFilter(COURSE_ID_PROPERTY, FilterOperator.EQUAL, courseId);
    q.addFilter(SECTION_ID_PROPERTY, FilterOperator.EQUAL, sectionId);
    PreparedQuery pq = datastore.prepare(q);
    Entity e = pq.asSingleEntity();
    if (e == null)
      return null;
    return getSectionFromEntity(e);

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