У меня есть класс и 2 сопоставления "многие-к-одному", как я могу их лениво загружать
Мои свойства
**teneo.mapping.also_map_as_class=true
teneo.mapping.set_proxy=true
teneo.mapping.mapping_file_name=/lazy.hbm.xml**
Файл сопоставления (lazy.hbm.xml)
<class name="EnvironmentImpl" entity-name="**Environment**" abstract="false" lazy="true" discriminator-value="Environment" table="`ENVIRONMENT`" proxy="Environment">
<meta attribute="eclassName">Environment</meta>
<property name="name" lazy="false" insert="true" update="true" not-null="true" unique="false" type="java.lang.String">
<column not-null="true" unique="false" name="`NAME`"/>
</property>
<property name="description" lazy="false" insert="true" update="true" not-null="false" unique="false" type="java.lang.String">
<column not-null="false" unique="false" name="`DESCRIPTION`" length="512"/>
</property>
<property name="contact" lazy="false" insert="true" update="true" not-null="false" unique="false" type="java.lang.String">
<column not-null="false" unique="false" name="`CONTACT`"/>
</property>
<many-to-one name="rootAppFolder" entity-name="ApplicationFolder" lazy="proxy" cascade="all" foreign-key="ENVIRONMENT_ROOTAPPFOLDER" insert="true" update="true" not-null="false" unique="true">
<column not-null="false" unique="false" name="`APPLICATINFLDER_RTAPPFOLDER_ID`"/>
</many-to-one>
<many-to-one name="serviceVirtualization" entity-name="ServiceVirtualization" lazy="proxy" cascade="all" foreign-key="ENVIRNMENT_SERVICEVIRTALIZATIN" insert="true" update="true" not-null="false">
<column not-null="false" unique="false" name="`SRVCVRTLZTN_SRVICVIRTLIZTIN_ID`"/>
</many-to-one>
</class>
As you can see class Environment has 2 many-to-one's with names ApplicationFolder and serviceVirtualization.
for a HQL query like - from Environment where name = :name
Which internally triggers 3 queries
Query1 : Environment ( this is right)
Query2 : ApplicationFolder ( wrong.lazy loading should not.)
Query 3 : serviceVirtualization ( wrong.lazy loading should not.)
DEBUG - select environmen0_."NAME" as NAME4_31_, environmen0_."DESCRIPTION" as DESCRIPT5_31_, environmen0_."CONTACT" as CONTACT6_31_, environmen0_."APPLICATINFLDER_RTAPPFOLDER_ID" as APPLICAT7_31_, environmen0_."SRVCVRTLZTN_SRVICVIRTLIZTIN_ID" as SRVCVRTL8_31_ from "ENVIRONMENT" environmen0_ where environmen0_."NAME"=?
DEBUG - select applicatio0_.e_id as e1_43_0_, applicatio0_.version_ as version3_43_0_, applicatio0_."NAME" as NAME4_43_0_, applicatio0_."ENVIRONMENT_ENV_E_ID" as ENVIRONM5_43_0_ as APPLICAT8_43_0_ from "APPLICATIONFOLDER" applicatio0_ where applicatio0_.e_id=?
DEBUG - select servicevir0_.e_id as e1_35_0_, servicevir0_.version_ as version3_35_0_, servicevir0_.econtainer_class as econtainer4_35_0_, servicevir0_.e_container as e5_35_0_, servicevir0_.e_container_featureid as e6_35_0_ from "SERVICEVIRTUALIZATION" servicevir0_ where servicevir0_.e_id=?
Какие подходы я пробовал до сих пор: 1) установите lazy = "no-proxy", не вижу никаких изменений в количестве запросов.
2) установка not-found = "exception".
3) external-join = "авто"
Может ли кто-нибудь предложить мне решение, чтобы уменьшить эти 2 дополнительных запроса, которые будут уволены из-за нетерпеливых отношений «многие к одному»?
Обратите внимание на отношения внешнего ключа по схеме многие-к-одному.
