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  package org.apache.cayenne.access.jdbc;
  
  import org.apache.cayenne.access.types.ExtendedType;
  
  /**
   * A descriptor of a result row obtained from a database.
   * 
   * @since 1.2
   */
  public class RowDescriptor {
  
      protected ColumnDescriptor[] columns;
      protected ExtendedType[] converters;
  
      /**
       * Creates an empty RowDescriptor. Intended mainly for testing and use by subclasses.
       */
      protected RowDescriptor() {
  
      }
  
      /**
       * Creates a fully initialized RowDescriptor.
       * 
       * @since 3.0
       */
      public RowDescriptor(ColumnDescriptor[] columns, ExtendedType[] converters) {
          this.columns = columns;
          this.converters = converters;
      }
  
      /**
       * Returns a number of columns in a row.
       */
      public int getWidth() {
          return columns.length;
      }
  
      /**
       * Returns column descriptors.
       */
      public ColumnDescriptor[] getColumns() {
          return columns;
      }
  
      /**
       * Returns extended types for columns.
       */
      public ExtendedType[] getConverters() {
          return converters;
      }
  }
  