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//$Id: OuterJoinLoadable.java 7652 2005-07-26 05:51:47Z oneovthafew $
package org.hibernate.persister.entity;

import org.hibernate.FetchMode;
import org.hibernate.engine.CascadeStyle;
import org.hibernate.type.EntityType;
import org.hibernate.type.Type;

/**
 * A EntityPersister that may be loaded by outer join using
 * the OuterJoinLoader hierarchy and may be an element
 * of a one-to-many association.
 *
 * @see org.hibernate.loader.OuterJoinLoader
 * @author Gavin King
 */
public interface OuterJoinLoadable extends Loadable, Joinable {

	/**
	 * Generate a list of collection index, key and element columns
	 */
	public String selectFragment(String alias, String suffix);
	/**
	 * How many properties are there, for this class and all subclasses?
	 */
	public int countSubclassProperties();

	/**
	 * May this (subclass closure) property be fetched using an SQL outerjoin?
	 */
	public FetchMode getFetchMode(int i);
	/**
	 * Get the cascade style of this (subclass closure) property
	 */
	public CascadeStyle getCascadeStyle(int i);

	/**
	 * Is this property defined on a subclass of the mapped class.
	 */
	public boolean isDefinedOnSubclass(int i);

	/**
	 * Get the type of the numbered property of the class or a subclass.
	 */
	public Type getSubclassPropertyType(int i);

	/**
	 * Get the name of the numbered property of the class or a subclass.
	 */
	public String getSubclassPropertyName(int i);
	
	/**
	 * Is the numbered property of the class of subclass nullable?
	 */
	public boolean isSubclassPropertyNullable(int i);

	/**
	 * Return the column names used to persist the numbered property of the
	 * class or a subclass.
	 */
	public String[] getSubclassPropertyColumnNames(int i);

	/**
	 * Return the table name used to persist the numbered property of the
	 * class or a subclass.
	 */
	public String getSubclassPropertyTableName(int i);
	/**
	 * Given the number of a property of a subclass, and a table alias,
	 * return the aliased column names.
	 */
	public String[] toColumns(String name, int i);

	/**
	 * Get the main from table fragment, given a query alias.
	 */
	public String fromTableFragment(String alias);

	/**
	 * Get the column names for the given property path
	 */
	public String[] getPropertyColumnNames(String propertyPath);
	/**
	 * Get the table name for the given property path
	 */
	public String getPropertyTableName(String propertyName);
	
	public EntityType getEntityType();

}