Examples of org.hibernate.criterion.Projection

org.hibernate.criterion.Projection
An object-oriented representation of a query result set projection in a {@link Criteria} query.Built-in projection types are provided by the {@link Projections} factory class. This interface might beimplemented by application classes that define custom projections. @author Gavin King @author Steve Ebersole @see Projections @see Criteria

    List<T> targetList = null;
    if (null == criteriaImpl.getProjection()) {
      criteria.setFirstResult((limit.getPageNo() - 1) * limit.getPageSize()).setMaxResults(
          limit.getPageSize());
      targetList = criteria.list();
      Projection projection = null;
      criteria.setFirstResult(0).setMaxResults(1);
      projection = Projections.rowCount();
      totalCount = ((Number) criteria.setProjection(projection).uniqueResult()).intValue();
    } else {
      List<T> list = criteria.list();

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    List<?> targetList = null;
    if (null == criteriaImpl.getProjection()) {
      criteria.setFirstResult((limit.getPageNo() - 1) * limit.getPageSize()).setMaxResults(
          limit.getPageSize());
      targetList = criteria.list();
      Projection projection = null;
      criteria.setFirstResult(0).setMaxResults(1);
      projection = Projections.rowCount();
      totalCount = ((Integer) criteria.setProjection(projection).uniqueResult()).intValue();
    } else {
      List<?> list = criteria.list();

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  public String[] getColumnsUsingProjection(
      Criteria subcriteria,
          String propertyName) throws HibernateException {


    //first look for a reference to a projection alias
    final Projection projection = rootCriteria.getProjection();
    String[] projectionColumns = projection == null ?
                                 null :
                                 projection.getColumnAliases( propertyName, 0 );


    if ( projectionColumns == null ) {
      //it does not refer to an alias of a projection,
      //look for a property
      try {

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  public Type getTypeUsingProjection(Criteria subcriteria, String propertyName)
      throws HibernateException {


    //first look for a reference to a projection alias
    final Projection projection = rootCriteria.getProjection();
    Type[] projectionTypes = projection == null ?
                             null :
                             projection.getTypes( propertyName, subcriteria, this );


    if ( projectionTypes == null ) {
      try {
        //it does not refer to an alias of a projection,
        //look for a property

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  public String[] getColumnsUsingProjection(
      Criteria subcriteria,
          String propertyName) throws HibernateException {


    //first look for a reference to a projection alias
    final Projection projection = rootCriteria.getProjection();
    String[] projectionColumns = projection == null ?
                                 null :
                                 projection.getColumnAliases( propertyName, 0 );


    if ( projectionColumns == null ) {
      //it does not refer to an alias of a projection,
      //look for a property
      try {

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  public Type getTypeUsingProjection(Criteria subcriteria, String propertyName)
      throws HibernateException {


    //first look for a reference to a projection alias
    final Projection projection = rootCriteria.getProjection();
    Type[] projectionTypes = projection == null ?
                             null :
                             projection.getTypes( propertyName, subcriteria, this );


    if ( projectionTypes == null ) {
      try {
        //it does not refer to an alias of a projection,
        //look for a property

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  public String[] getColumnsUsingProjection(
      Criteria subcriteria,
          String propertyName) throws HibernateException {


    //first look for a reference to a projection alias
    final Projection projection = rootCriteria.getProjection();
    String[] projectionColumns = null;
    if ( projection != null ) {
      projectionColumns = ( projection instanceof EnhancedProjection ?
          ( ( EnhancedProjection ) projection ).getColumnAliases( propertyName, 0, rootCriteria, this ) :
          projection.getColumnAliases( propertyName, 0 )
      );
    }
    if ( projectionColumns == null ) {
      //it does not refer to an alias of a projection,
      //look for a property

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  @Override
  public Type getTypeUsingProjection(Criteria subcriteria, String propertyName)
      throws HibernateException {


    //first look for a reference to a projection alias
    final Projection projection = rootCriteria.getProjection();
    Type[] projectionTypes = projection == null ?
                             null :
                             projection.getTypes( propertyName, subcriteria, this );


    if ( projectionTypes == null ) {
      try {
        //it does not refer to an alias of a projection,
        //look for a property

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  public static ProjectionList projectionSupport(Criteria criteria,
      ProjectionList projectionList) throws Exception {
    ProjectionList newProjectionList = Projections.projectionList();
    Map<String, String> aliasesToCreate = new HashMap<String, String>();
    for (int i = 0; i < projectionList.getLength(); i++) {
      Projection projection = projectionList.getProjection(i);
      String projectionString = projection.toString();
      if (projectionString.indexOf(".") != -1) {
        String[] splitedString = projectionString.split("\\.");
        createAlias(criteria, splitedString);
        newProjectionList.add(Projections.property(splitedString[splitedString.length-2]+"."+splitedString[splitedString.length-1]));
      } else {

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  public static ProjectionList projectionSupport(Criteria criteria,
      ProjectionList projectionList) throws Exception {
    ProjectionList newProjectionList = Projections.projectionList();
    Map<String, String> aliasesToCreate = new HashMap<String, String>();
    for (int i = 0; i < projectionList.getLength(); i++) {
      Projection projection = projectionList.getProjection(i);
      String projectionString = projection.toString();
      if (projectionString.indexOf(".") != -1) {
        String[] splitedString = projectionString.split("\\.");
        createAlias(criteria, splitedString);
        newProjectionList.add(Projections.property(splitedString[splitedString.length-2]+"."+splitedString[splitedString.length-1]));
      } else {

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