BeanCollectionHelp.java

package io.ebeaninternal.server.deploy;

import io.ebean.EbeanServer;
import io.ebean.Query;
import io.ebean.Transaction;
import io.ebean.bean.BeanCollection;
import io.ebean.bean.BeanCollectionAdd;
import io.ebean.bean.BeanCollectionLoader;
import io.ebean.bean.EntityBean;
import io.ebeaninternal.server.text.json.WriteJson;

import java.io.IOException;

/**
 * Helper functions for performing tasks on Lists Sets or Maps.
 */
public interface BeanCollectionHelp<T> {

  /**
   * Set the EbeanServer that owns the configuration.
   */
  void setLoader(BeanCollectionLoader loader);

  /**
   * Return the mechanism to add beans to the underlying collection.
   * <p>
   * For Map's this needs to take the mapKey.
   * </p>
   */
  BeanCollectionAdd getBeanCollectionAdd(Object bc, String mapKey);

  /**
   * Create an empty collection of the correct type without a parent bean.
   */
  BeanCollection<T> createEmptyNoParent();

  /**
   * Create an empty collection of the correct type.
   */
  BeanCollection<T> createEmpty(EntityBean bean);

  /**
   * Add a bean to the List Set or Map.
   */
  void add(BeanCollection<?> collection, EntityBean bean, boolean withCheck);

  /**
   * Create a lazy loading proxy for a List Set or Map.
   */
  BeanCollection<T> createReference(EntityBean parentBean);

  /**
   * Refresh the List Set or Map.
   */
  void refresh(EbeanServer server, Query<?> query, Transaction t, EntityBean parentBean);

  /**
   * Apply the new refreshed BeanCollection to the appropriate property of the parent bean.
   */
  void refresh(BeanCollection<?> bc, EntityBean parentBean);

  /**
   * Write the collection out as json.
   */
  void jsonWrite(WriteJson ctx, String name, Object collection, boolean explicitInclude) throws IOException;

}