extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-mysql/src/main/resources/org/apache/guacamole/auth/jdbc/usergroup/UserGroupMemberUserMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
    "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >

<!--
    Licensed to the Apache Software Foundation (ASF) under one
    or more contributor license agreements.  See the NOTICE file
    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

    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.
-->

<mapper namespace="org.apache.guacamole.auth.jdbc.usergroup.UserGroupMemberUserMapper" >

    <!-- Select the username of all member users -->
    <select id="selectChildIdentifiers" resultType="string">
        SELECT name
        FROM guacamole_user_group_member
        JOIN guacamole_entity ON guacamole_entity.entity_id = guacamole_user_group_member.member_entity_id
        WHERE
            guacamole_user_group_member.user_group_id = #{parent.objectID,jdbcType=INTEGER}
            AND guacamole_entity.type = 'USER'
    </select>

    <!-- Select the usernames of all readable member users -->
    <select id="selectReadableChildIdentifiers" resultType="string">
        SELECT guacamole_entity.name
        FROM guacamole_user_group_member
        JOIN guacamole_entity ON guacamole_entity.entity_id = guacamole_user_group_member.member_entity_id
        JOIN guacamole_user ON guacamole_user.entity_id = guacamole_entity.entity_id
        WHERE
            guacamole_user.user_id IN (
                <include refid="org.apache.guacamole.auth.jdbc.user.UserMapper.getReadableIDs">
                    <property name="entityID" value="#{user.entityID,jdbcType=INTEGER}"/>
                    <property name="groups"   value="effectiveGroups"/>
                </include>
            )
            AND guacamole_user_group_member.user_group_id = #{parent.objectID,jdbcType=INTEGER}
            AND guacamole_entity.type = 'USER'
    </select>

    <!-- Delete member users by name -->
    <delete id="delete">
        DELETE FROM guacamole_user_group_member
        USING guacamole_user_group_member
        JOIN guacamole_entity ON guacamole_entity.entity_id = member_entity_id
        WHERE
            user_group_id = #{parent.objectID,jdbcType=INTEGER}
            AND guacamole_entity.type = 'USER'
            AND guacamole_entity.name IN
                <foreach collection="children" item="identifier"
                         open="(" separator="," close=")">
                    #{identifier,jdbcType=VARCHAR}
                </foreach>
    </delete>

    <!-- Insert member users by name -->
    <insert id="insert">
        INSERT INTO guacamole_user_group_member (
            user_group_id,
            member_entity_id
        )
        SELECT DISTINCT
            #{parent.objectID,jdbcType=INTEGER},
            guacamole_entity.entity_id
        FROM guacamole_entity
        WHERE
            guacamole_entity.name IN
                <foreach collection="children" item="identifier"
                         open="(" separator="," close=")">
                    #{identifier}
                </foreach>
            AND guacamole_entity.type = 'USER'
            AND guacamole_entity.entity_id NOT IN (
                SELECT guacamole_user_group_member.member_entity_id
                FROM guacamole_user_group_member
                WHERE guacamole_user_group_member.user_group_id = #{parent.objectID,jdbcType=INTEGER}
            )
    </insert>

</mapper>