<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<body link="#355491" alink="#4262a1" vlink="#355491" style="background: #e2e2e2; margin: 0; padding: 20px;">
<div>
<table cellpadding="0" bgcolor="#FFFFFF" border="0" cellspacing="0" style="border: 1px solid #dadada; margin-bottom: 30px; width: 100%; -moz-border-radius: 6px; -webkit-border-radius: 6px;">
<tbody>
<tr>
<td>
<table border="0" cellpadding="0" cellspacing="0" bgcolor="#FFFFFF" style="border: solid 2px #ccc; background: #dadada; width: 100%; -moz-border-radius: 6px; -webkit-border-radius: 6px;">
<tbody>
<tr>
<td bgcolor="#000000" valign="middle" height="58px" style="border-bottom: 1px solid #ccc; padding: 20px; -moz-border-radius-topleft: 3px; -moz-border-radius-topright: 3px; -webkit-border-top-right-radius: 5px; -webkit-border-top-left-radius: 5px;">
<h1 style="color: #333333; font: bold 22px Arial, Helvetica, sans-serif; margin: 0; display: block !important;">
<!-- To have a header image/logo replace the name below with your img tag -->
<!-- Email clients will render the images when the message is read so any image -->
<!-- must be made available on a public server, so that all recipients can load the image. -->
<a href="http://community.jboss.org/index.jspa" style="text-decoration: none; color: #E1E1E1">JBoss Community</a></h1>
</td>
</tr>
<tr>
<td bgcolor="#FFFFFF" style="font: normal 12px Arial, Helvetica, sans-serif; color:#333333; padding: 20px; -moz-border-radius-bottomleft: 4px; -moz-border-radius-bottomright: 4px; -webkit-border-bottom-right-radius: 5px; -webkit-border-bottom-left-radius: 5px;"><h3 style="margin: 10px 0 5px; font-size: 17px; font-weight: normal;">
Embedded Many-to-one performance issue
</h3>
<span style="margin-bottom: 10px;">
created by <a href="http://community.jboss.org/people/csab79">csab79</a> in <i>EJB3</i> - <a href="http://community.jboss.org/message/585635#585635">View the full discussion</a>
</span>
<hr style="margin: 20px 0; border: none; background-color: #dadada; height: 1px;">
<div class="jive-rendered-content"><p>Hi hibernate gurus! </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I have experienced the following issue:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I have a class with some properties and 5 many-to-one relationship.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><?xml version="1.0"?></p><p><!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"</p><p><span>"</span><a class="jive-link-external-small" href="http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd" target="_blank">http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd</a><span>"></span></p><p><hibernate-mapping></p><p>    <class name="hibernate.classes.Fszerzfej" table="FSZERZFEJ" catalog="dev1"></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>            <id name="ffId" type="int"></p><p>                <column name="FF_ID" /></p><p>                <generator class="identity"/></p><p>            </id></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>            <property name="ffSzerzszam" type="string"></p><p>                <column name="FF_SZERZSZAM" /></p><p>            </property></p><p>            <property name="ffUgyfelkod" type="string"></p><p>                <column name="FF_UGYFELKOD" /></p><p>            </property></p><p>            <property name="ffUgyfelnev" type="string"></p><p>                <column name="FF_UGYFELNEV" /></p><p>            </property></p><p>            <property name="ffStIdRegio" type="int"></p><p>                <column name="ST_ID_REGIO" /></p><p>            </property></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>            <property name="ffSzerztipus" type="int"></p><p>                <column name="FF_SZERZTIPUS" /></p><p>            </property></p><p>            ...</p><p>            ...</p><p>            ...</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>          <many-to-one name="regio" class="hibernate.classes.Choicerows" fetch="join" insert="false" update="false"></p><p>                      <column name="ST_ID_REGIO" not-null="true" /></p><p>                  </many-to-one></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>            <many-to-one name="sterulet" class="hibernate.classes.Sterulet" fetch="join" insert="false" update="false"></p><p>                      <column name="ST_ID_TELEPULES" not-null="true"/></p><p>                  </many-to-one></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>            <many-to-one name="szerzst" class="hibernate.classes.Choicerows" fetch="join" insert="false" update="false" ></p><p>                      <column name="FF_SZERZST" not-null="true" /></p><p>                  </many-to-one></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>            <many-to-one name="ufkodtipus" class="hibernate.classes.Choicerows" fetch="join" insert="false" update="false" ></p><p>                      <column name="FF_UFKODTIPUS" not-null="true" /></p><p>                  </many-to-one></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>            <many-to-one name="szerztip" class="hibernate.classes.Choicerows" fetch="join" insert="false" update="false"></p><p>                      <column name="FF_SZERZTIPUS" not-null="true" /></p><p>                  </many-to-one></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>    </class></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p></hibernate-mapping></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>My another class is using fszerzfej class also with many-to-one ralationship:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><?xml version="1.0"?></p><p><!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"</p><p><span>"</span><a class="jive-link-external-small" href="http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd" target="_blank">http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd</a><span>"></span></p><p><hibernate-mapping></p><p>    <class name="hibernate.classes.Fszerzpont" table="FSZERZPONT" catalog="dev1"></p><p>                  <id name="fpId" type="int" ></p><p>                                        <column name="FP_ID" /></p><p>                                        <generator class="identity" /></p><p>            </id></p><p>            <property name="fpFfId" type="int"></p><p>                <column name="FP_FF_ID" /></p><p>            </property></p><p>            <property name="fpPontnev" type="string"></p><p>                <column name="FP_PONTNEV" /></p><p>            </property></p><p>            <property name="fpStRegio" type="int"></p><p>                <column name="FP_ST_REGIO" /></p><p>            </property></p><p>            <property name="fpStTelepules" type="int"></p><p>                <column name="FP_ST_TELEPULES" /></p><p>            </property></p><p>            <property name="fpIranyitoszam" type="string"></p><p>                <column name="FP_IRANYITOSZAM" /></p><p>            </property></p><p>               ...</p><p>               ...</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>            <many-to-one name="regio" class="hibernate.classes.Choicerows" fetch="join" insert="false" update="false" ></p><p>                      <column name="FP_ST_REGIO" not-null="true" /></p><p>                  </many-to-one></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>            <many-to-one name="sterulet" class="hibernate.classes.Sterulet" fetch="join" insert="false" update="false" ></p><p>                      <column name="FP_ST_TELEPULES" not-null="true" /></p><p>                  </many-to-one></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>            <many-to-one name="szerzodesAllapot" class="hibernate.classes.Choicerows" fetch="join" insert="false" update="false"></p><p>                      <column name="FP_SZERZST" not-null="true" /></p><p>                  </many-to-one></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>            <many-to-one name="tipus" class="hibernate.classes.GyujtopontTipusok" fetch="join" insert="false" update="false"></p><p>                      <column name="gyujtopont_tipus_id" not-null="true" /></p><p>                  </many-to-one></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>            <many-to-one name="szerzodes" class="hibernate.classes.Fszerzfej" fetch="join" insert="false" update="false" ></p><p>                      <column name="FP_FF_ID"/></p><p>                  </many-to-one>         </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>    </class></p><p></hibernate-mapping></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The impact is occuring when i am using fszerzpont class the fszerzfej many-to-one relationships fetching mode will be lazy=false. <br/>I dont understand this bahaviour, i am not using getters exampl from  fszerzfej.regio, fszerzfej.sterulet, fszerzfej.szerzst, fszerzfej.ufkodtipus, fszerzfej.szerztip </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I am using this relations only from fszerzfej, not from fszerzpont. </p><p>I assume lazy fetching should doing this but i am surprised why not :S </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>How could i tell Hibernate do not use load thoose many-to-one- relations into memory?<br/>My other question is about lazy group fetching. I have read many article but i cant achive to work properly. </p><p>Bulidtime ant instrumentation does not work for me :S  </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I appreciate any help!<br/>best regards!   </p><p>Csaba</p></div>
<div style="background-color: #f4f4f4; padding: 10px; margin-top: 20px;">
<p style="margin: 0;">Reply to this message by <a href="http://community.jboss.org/message/585635#585635">going to Community</a></p>
<p style="margin: 0;">Start a new discussion in EJB3 at <a href="http://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2029">Community</a></p>
</div></td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</div>
</body>
</html>