<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<!-- 
 * Licensed to The Apereo Foundation under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for
 * additional information regarding copyright ownership.
 *
 * The Apereo Foundation 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
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 -->
<hibernate-mapping package="org.unitime.timetable.model">
	<class name="InstructorAttribute" table="attribute">
		<cache include="non-lazy" usage="transactional"/>
        <id
            name="uniqueId"
            column="uniqueid"
            type="java.lang.Long">
            <generator class="org.unitime.commons.hibernate.id.UniqueIdGenerator">
                <param name="sequence">pref_group_seq</param>
            </generator>
        </id>
        
        <property
            name="code"
            column="code"
            type="java.lang.String"
            not-null="true"
            length="20"/>

        <property
            name="name"
            column="name"
            type="java.lang.String"
            not-null="true"
            length="60"/>

        <many-to-one
        	name="type"
        	class="InstructorAttributeType"
        	column="type_id"
        	foreign-key="fk_attribute_type"
        	not-null="true"/>
        
        <many-to-one
        	name="parentAttribute"
        	class="InstructorAttribute"
        	column="parent_id"
        	foreign-key="fk_attribute_parent"
        	not-null="false"/>
        
        <set
        	name="childAttributes"
        	inverse="true"
        	table="attribute">
        	<cache include="non-lazy" usage="transactional"/>
        	<key column="parent_id" foreign-key="fk_attribute_parent"/>
        	<one-to-many class="InstructorAttribute"/>
        </set>

        <many-to-one
        	name="session"
        	class="Session"
        	column="session_id"
        	foreign-key="fk_attribute_session"
        	not-null="true"/>

        <many-to-one
            name="department"
            class="Department"
            column="department_id"
            foreign-key="fk_attribute_department"
            not-null="false"/>

        <set
            name="instructors"
            table="instructor_attributes"
            inverse="true">
            <cache include="non-lazy" usage="transactional"/>
            <key column="attribute_id" foreign-key="fk_instrattributes_attribute"/>
            <many-to-many class="DepartmentalInstructor" column="instructor_id" foreign-key="fk_instrattributes_instructor"/>
        </set>
	</class>
</hibernate-mapping>