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 * 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
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 * 
 * http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.olingo.odata2.core.edm.provider;

import org.apache.olingo.odata2.api.edm.EdmAnnotatable;
import org.apache.olingo.odata2.api.edm.EdmAnnotations;
import org.apache.olingo.odata2.api.edm.EdmException;
import org.apache.olingo.odata2.api.edm.EdmReferentialConstraint;
import org.apache.olingo.odata2.api.edm.EdmReferentialConstraintRole;
import org.apache.olingo.odata2.api.edm.provider.ReferentialConstraint;
import org.apache.olingo.odata2.api.edm.provider.ReferentialConstraintRole;

public class EdmReferentialConstraintImplProv implements EdmReferentialConstraint, EdmAnnotatable {
  private ReferentialConstraint referentialConstraint;
  private EdmAnnotations annotations;

  public EdmReferentialConstraintImplProv(final ReferentialConstraint referentialConstraint) throws EdmException {
    this.referentialConstraint = referentialConstraint;
  }

  @Override
  public EdmReferentialConstraintRole getPrincipal() throws EdmException {
    ReferentialConstraintRole principal = referentialConstraint.getPrincipal();
    return new EdmReferentialConstraintRoleImplProv(principal);
  }

  @Override
  public EdmReferentialConstraintRole getDependent() throws EdmException {
    ReferentialConstraintRole dependent = referentialConstraint.getDependent();
    return new EdmReferentialConstraintRoleImplProv(dependent);
  }

  @Override
  public EdmAnnotations getAnnotations() throws EdmException {
    if (annotations == null) {
      annotations =
          new EdmAnnotationsImplProv(referentialConstraint.getAnnotationAttributes(), referentialConstraint
              .getAnnotationElements());
    }
    return annotations;
  }

}