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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
 * with the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
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 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
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package org.apache.olingo.odata2.jpa.processor.api.factory;

import java.util.Locale;

import org.apache.olingo.odata2.api.edm.provider.EdmProvider;
import org.apache.olingo.odata2.api.processor.ODataSingleProcessor;
import org.apache.olingo.odata2.jpa.processor.api.ODataJPAContext;
import org.apache.olingo.odata2.jpa.processor.api.ODataJPAResponseBuilder;
import org.apache.olingo.odata2.jpa.processor.api.exception.ODataJPAMessageService;

/**
 * Factory interface for creating following instances
 * 
 * <p>
 * <ul>
 * <li>OData JPA Processor of type {@link org.apache.olingo.odata2.api.processor.ODataSingleProcessor}</li>
 * <li>JPA EDM Provider of type {@link org.apache.olingo.odata2.api.edm.provider.EdmProvider}</li>
 * <li>OData JPA Context {@link org.apache.olingo.odata2.jpa.processor.api.ODataJPAContext}</li>
 * <li>OData JPA Response Builder {@link org.apache.olingo.odata2.jpa.processor.api.ODataJPAResponseBuilder}</li>
 * </ul>
 * </p>
 * 
 * 
 * @see org.apache.olingo.odata2.jpa.processor.api.factory.ODataJPAFactory
 */
public interface ODataJPAAccessFactory {
  /**
   * The method creates an OData JPA Processor. The processor handles runtime
   * behavior of an OData service.
   * 
   * @param oDataJPAContext
   * an instance of type {@link org.apache.olingo.odata2.jpa.processor.api.ODataJPAContext}.
   * The context should be initialized properly and cannot be null.
   * @return An implementation of OData JPA Processor.
   */
  public ODataSingleProcessor createODataProcessor(ODataJPAContext oDataJPAContext);

  /**
   * 
   * @param oDataJPAContext
   * an instance of type {@link org.apache.olingo.odata2.jpa.processor.api.ODataJPAContext}.
   * The context should be initialized properly and cannot be null.
   * @return An implementation of JPA EdmProvider. EdmProvider handles
   * meta-data.
   */
  public EdmProvider createJPAEdmProvider(ODataJPAContext oDataJPAContext);

  /**
   * The method creates an instance of OData JPA Context. An empty instance is
   * returned.
   * 
   * @return an instance of type {@link org.apache.olingo.odata2.jpa.processor.api.ODataJPAContext}
   */
  public ODataJPAContext createODataJPAContext();

  /**
   * The method creates an instance of message service for loading language
   * dependent message text.
   * 
   * @param locale
   * is the language in which the message service should load
   * message texts.
   * @return an instance of type {@link org.apache.olingo.odata2.jpa.processor.api.exception.ODataJPAMessageService}
   */
  public ODataJPAMessageService getODataJPAMessageService(Locale locale);

  /**
   * @param oDataJPAContext
   * an instance of type {@link org.apache.olingo.odata2.jpa.processor.api.ODataJPAContext}.
   * The context should be initialized properly and cannot be null.
   * 
   * The method creates an instance of OData Response Builder for building OData Responses from a JPA Entity.
   * @return an instance of type{@link org.apache.olingo.odata2.jpa.processor.api.ODataJPAResponseBuilder}
   */
  public ODataJPAResponseBuilder getODataJPAResponseBuilder(ODataJPAContext oDataJPAContext);
}