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package com.cedarsoft.gdao.async;

import com.cedarsoft.gdao.GenericDao;
import com.cedarsoft.gdao.GenericService;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

/**
 *
 */
public class AsynchronousService extends AsynchronousDao implements GenericService {
  @Nullable
  public  R perform( @NotNull final ServiceCallback callback ) {
    return asyncCallSupport.invokeNullable( new DaoAction() {
      public R execute( @NotNull GenericDao dao ) {
        GenericService service = ( GenericService ) dao;
        return callback.perform( service );
      }
    } );
  }

  public void initializeDelegatingService( @NotNull GenericService delegatingService ) {
    initializeDelegatingDao( delegatingService );
  }

  @Override
  public void initializeDelegatingDao( @NotNull GenericDao delegatingDao ) {
    if ( !( delegatingDao instanceof GenericService ) ) {
      throw new IllegalArgumentException( "AsynchronousService must be initialized with an GenericService as delegating dao" );
    }
    super.initializeDelegatingDao( delegatingDao );
  }
}