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  package org.apache.cayenne.exp.property;
  
  import org.apache.cayenne.exp.Expression;
  import org.apache.cayenne.exp.path.CayennePath;
  
  /**
   * Base interface for all types of properties
   * @since 4.2
   */
  public interface Property<E> {
  
      /**
       * @return name of this property, can be null
       * @see #getPath()
       */
      String getName();
  
      /**
       * @return path that this property represents, can be empty if this is an expression-based property
       * @see #getName()
       * @since 5.0
       */
      CayennePath getPath();
  
      /**
       * @return alias of this property, can be null
       */
      String getAlias();
  
      /**
       * @return expression that defines this property, not null
       */
      Expression getExpression();
  
      /**
       * @return java type of this property, can be null
       */
      Class<E> getType();
  
  }
  