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Repackaged OData V2 Olingo Library

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 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
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package org.apache.olingo.odata2.api.edm;

/**
 * @org.apache.olingo.odata2.DoNotImplement
 * A CSDL Association element
 * 
 * EdmAssociation defines the relationship of two entity types.
 * 
 */
public interface EdmAssociation extends EdmType, EdmAnnotatable {

  /**
   * Get the {@link EdmAssociationEnd} by role
   * @param role
   * @return {@link EdmAssociationEnd}
   * @throws EdmException
   */
  EdmAssociationEnd getEnd(String role) throws EdmException;

  /**
   * Get the {@link EdmAssociationEnd} for end1
   * @return {@link EdmAssociationEnd}
   * @throws EdmException
   */
  EdmAssociationEnd getEnd1() throws EdmException;

  /**
   * Get the {@link EdmAssociationEnd} for end2
   * @return {@link EdmAssociationEnd}
   * @throws EdmException
   */
  EdmAssociationEnd getEnd2() throws EdmException;

  /**
   * Get the {@link EdmReferentialConstraint}
   * @return {@link EdmReferentialConstraint}
   * @throws EdmException
   */
  EdmReferentialConstraint getReferentialConstraint() throws EdmException;
}