diff --git a/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/META-INF/persistence.xml b/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/META-INF/persistence.xml
new file mode 100644
index 0000000000000000000000000000000000000000..98008b00ab1bb2f3eecc5b18831954d92ce7f619
--- /dev/null
+++ b/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/META-INF/persistence.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence"
+ xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_2.xsd"
+ version="2.2">
+
+ <persistence-unit name="NewPersistenceUnit">
+ <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
+ <properties>
+ <property name="hibernate.connection.url" value=""/>
+ <property name="hibernate.connection.driver_class" value=""/>
+ <property name="hibernate.connection.username" value=""/>
+ <property name="hibernate.connection.password" value=""/>
+ <property name="hibernate.archive.autodetection" value="class"/>
+ <property name="hibernate.show_sql" value="true"/>
+ <property name="hibernate.format_sql" value="true"/>
+ <property name="hbm2ddl.auto" value="update"/>
+ </properties>
+ </persistence-unit>
+</persistence>
diff --git a/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/JqlTypeViolation.java b/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/JqlTypeViolation.java
new file mode 100644
index 0000000000000000000000000000000000000000..281370f09019bbe43be717c2a75344530cceb560
--- /dev/null
+++ b/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/JqlTypeViolation.java
@@ -0,0 +1,34 @@
+package de.hdm_stuttgart.mi.sda1;
+
+import de.hdm_stuttgart.mi.sda1.model.StudyCourse;
+
+import javax.persistence.*;
+import java.util.List;
+
+/**
+ * Datbase / OO Model type violation.
+ */
+public class JqlTypeViolation {
+ /**
+ * @param args unused
+ */
+ public static void main( String[] args ) {
+
+ final EntityManagerFactory factory = Persistence.createEntityManagerFactory(
+ "strategy_none");
+
+ final EntityManager em = factory.createEntityManager();
+
+ final Query query = em.createQuery("SELECT S.shortName FROM StudyCourse AS S");
+
+ final List<StudyCourse> studyCourses = query.getResultList();
+
+ try {
+ for (final StudyCourse studyCourse : studyCourses) {
+ System.out.println("Read + '" + studyCourse + "'");
+ }
+ } finally {
+ factory.close();
+ }
+ }
+}
\ No newline at end of file
diff --git a/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/ReadAllStudyCourses.java b/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/ReadAllStudyCourses.java
index a8ee77b7e7bac1a9cabebc14f55a372c140fd5c8..77cef47ecfbf4085e2ec34eeac44ecb0dc1c7a0b 100644
--- a/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/ReadAllStudyCourses.java
+++ b/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/ReadAllStudyCourses.java
@@ -18,17 +18,12 @@ public class ReadAllStudyCourses {
"strategy_none");
final EntityManager em = factory.createEntityManager();
- final EntityTransaction tx = em.getTransaction();
-
final Query query = em.createQuery("SELECT s FROM StudyCourse s");
- final List<StudyCourse> studyCourses;
- tx.begin();
- studyCourses = query.getResultList();
- tx.commit();
+ final List<StudyCourse> studyCourses = query.getResultList();
for (final StudyCourse studyCourse: studyCourses) {
- System.out.println("Read + '" + studyCourse + "'");
+ System.out.println("Read '" + studyCourse + "'");
}
// See http://stackoverflow.com/questions/21645516/program-using-hibernate-does-not-terminate
diff --git a/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/ReadStudyCourseById.java b/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/ReadStudyCourseById.java
index 7b78907d71a5e4d8d4436f79df531b4ec684456a..252be89770ad8599b208599d01bce56703a60184 100644
--- a/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/ReadStudyCourseById.java
+++ b/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/ReadStudyCourseById.java
@@ -20,14 +20,9 @@ public class ReadStudyCourseById {
"strategy_none");
final EntityManager em = factory.createEntityManager();
- final EntityTransaction tx = em.getTransaction();
+ final StudyCourse studyCourse = em.find(StudyCourse.class, "CSM");
- final StudyCourse studyCourse;
- tx.begin();
- studyCourse = em.find(StudyCourse.class, "CSM");
- tx.commit();
-
- System.out.println("Read + '" + studyCourse + "'");
+ System.out.println("Read '" + studyCourse + "'");
// See http://stackoverflow.com/questions/21645516/program-using-hibernate-does-not-terminate
factory.close();
diff --git a/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/ReadStudyCourseShortName.java b/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/ReadStudyCourseShortName.java
new file mode 100644
index 0000000000000000000000000000000000000000..60e00494683d401452b5eee6b239bffb60eb8443
--- /dev/null
+++ b/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/ReadStudyCourseShortName.java
@@ -0,0 +1,36 @@
+package de.hdm_stuttgart.mi.sda1;
+
+import de.hdm_stuttgart.mi.sda1.model.StudyCourse;
+
+import javax.persistence.*;
+import java.util.List;
+
+/**
+ * Datbase / OO Model type violation.
+ */
+public class ReadStudyCourseShortName {
+ /**
+ * @param args unused
+ */
+ public static void main( String[] args ) {
+
+ final EntityManagerFactory factory = Persistence.createEntityManagerFactory(
+ "strategy_none");
+ final EntityManager em = factory.createEntityManager();
+
+ final EntityTransaction tx = em.getTransaction();
+
+ final Query query = em.createQuery("SELECT S.shortName FROM StudyCourse AS S");
+ final List<String> shortNames;
+ tx.begin();
+ shortNames = query.getResultList();
+ tx.commit();
+ try {
+ for (final String shortName : shortNames) {
+ System.out.println("Read '" + shortName + "'");
+ }
+ } finally {
+ factory.close();
+ }
+ }
+}
\ No newline at end of file
diff --git a/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/UpdateStudyCourseById.java b/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/UpdateStudyCourseById.java
new file mode 100644
index 0000000000000000000000000000000000000000..90fff92de98cfd4c373a6a3e3d1f8b0578a35954
--- /dev/null
+++ b/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/UpdateStudyCourseById.java
@@ -0,0 +1,36 @@
+package de.hdm_stuttgart.mi.sda1;
+
+import de.hdm_stuttgart.mi.sda1.model.StudyCourse;
+
+import javax.persistence.EntityManager;
+import javax.persistence.EntityManagerFactory;
+import javax.persistence.EntityTransaction;
+import javax.persistence.Persistence;
+
+/**
+ * Read a {@link StudyCourse} by its primary key value.
+ */
+public class UpdateStudyCourseById {
+ /**
+ * @param args unused
+ */
+ public static void main( String[] args ) {
+
+ final EntityManagerFactory factory = Persistence.createEntityManagerFactory(
+ "strategy_none");
+ final EntityManager em = factory.createEntityManager();
+
+
+ final StudyCourse csm = em.find(StudyCourse.class, "CSM");
+
+ final EntityTransaction tx = em.getTransaction();
+ tx.begin();
+ csm.setFullName("Computerwissenschaft und Medien");
+ tx.commit();
+
+ System.out.println("After renaming: '" + csm + "'");
+
+ // See http://stackoverflow.com/questions/21645516/program-using-hibernate-does-not-terminate
+ factory.close();
+ }
+}
\ No newline at end of file
diff --git a/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/model/StudyCourse.java b/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/model/StudyCourse.java
index 5d513ac73941104281351055ea2b0928807dc312..f8e560bf051ce037ddc7818ae060e7c32544197a 100644
--- a/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/model/StudyCourse.java
+++ b/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/model/StudyCourse.java
@@ -21,6 +21,9 @@ public class StudyCourse {
this.fullName = fullName;
}
+ public void setFullName(final String fullName) {
+ this.fullName = fullName;
+ }
@Override
public String toString() {
return fullName + "(" + shortName + ")";
diff --git a/Doc/Sda1/Ref/JpaIntro/ideaAddFrameworkSupportHibernate.png b/Doc/Sda1/Ref/JpaIntro/ideaAddFrameworkSupportHibernate.png
new file mode 100644
index 0000000000000000000000000000000000000000..6d0e4c0201fcc483c385e07230cd1c83af2c263e
Binary files /dev/null and b/Doc/Sda1/Ref/JpaIntro/ideaAddFrameworkSupportHibernate.png differ
diff --git a/Doc/Sda1/Ref/JpaIntro/ideaAddFrameworkSupportJ2EEpersistence.png b/Doc/Sda1/Ref/JpaIntro/ideaAddFrameworkSupportJ2EEpersistence.png
new file mode 100644
index 0000000000000000000000000000000000000000..2ed24e0d041425b6a6e09807b88511a2e049c608
Binary files /dev/null and b/Doc/Sda1/Ref/JpaIntro/ideaAddFrameworkSupportJ2EEpersistence.png differ
diff --git a/Doc/Sda1/Ref/JpaIntro/ideaConfigFacets.png b/Doc/Sda1/Ref/JpaIntro/ideaConfigFacets.png
new file mode 100644
index 0000000000000000000000000000000000000000..c90c2deaca41d9275242b30bc01e97f92b15f508
Binary files /dev/null and b/Doc/Sda1/Ref/JpaIntro/ideaConfigFacets.png differ
diff --git a/Doc/Sda1/jpaintro.xml b/Doc/Sda1/jpaintro.xml
index b1ae7f9fc5d94fd967de195ab3e678faca08786f..cc68e972457760a50880b2729e9c43522c5a811a 100644
--- a/Doc/Sda1/jpaintro.xml
+++ b/Doc/Sda1/jpaintro.xml
@@ -228,11 +228,46 @@
</glosslist>
</figure>
+ <section xml:id="sda1_jpaintro_sect_Tooling">
+ <title>Notes on tooling</title>
+
+ <figure xml:id="sda1_jpaintro_fig_ideaConfigPersist">
+ <title>Right click »Add Framework Support«</title>
+
+ <mediaobject>
+ <imageobject>
+ <imagedata fileref="Ref/JpaIntro/ideaAddFrameworkSupportJ2EEpersistence.png"/>
+ </imageobject>
+ </mediaobject>
+ </figure>
+
+ <figure xml:id="sda1_jpaintro_fig_ideaConfigHibernate">
+ <title>Enable Hibernate support</title>
+
+ <mediaobject>
+ <imageobject>
+ <imagedata fileref="Ref/JpaIntro/ideaAddFrameworkSupportHibernate.png"/>
+ </imageobject>
+ </mediaobject>
+ </figure>
+
+ <figure xml:id="sda1_jpaintro_fig_ideaConfigFacets">
+ <title>»File« --> »Project Structure«</title>
+
+ <mediaobject>
+ <imageobject>
+ <imagedata fileref="Ref/JpaIntro/ideaConfigFacets.png"/>
+ </imageobject>
+ </mediaobject>
+ </figure>
+ </section>
+
<section xml:id="sda1_jpaintro_sect_mappingObjectsRoundTrip">
- <title>A round trip mapping objects</title>
+ <title>A round trip working with objects</title>
<section xml:id="sda1_jpaintro_sect_createSchema">
- <title>Mapping object- an database model</title>
+ <title>Mapping <xref linkend="glo_OO"/> domain model to database
+ model</title>
<figure xml:id="sda1_jpaintro_figClassStudyCourse">
<title>Class <classname>StudyCourse</classname></title>
@@ -254,7 +289,7 @@
<figure xml:id="sda1_jpaintro_fig_jreCreateStudyCourse">
<title>Transient instance</title>
- <programlisting language="java">final StudyCourse csm = new StudyCourse("CSM", "Computer Science and Media");
+ <programlisting language="java">final StudyCourse csm = new StudyCourse("CSM", "Computer Science and Media");
System.out.println(csm);</programlisting>
<para>Result:</para>
@@ -316,8 +351,8 @@ public class StudyCourse {
CREATE TABLE StudyCourse(
PRIMARY KEY <coref linkend="sda1_jpaintro_fig_studyCourseEntity-2-co"/> (shortName),
- shortName varchar(3 <coref
- linkend="sda1_jpaintro_fig_studyCourseEntity-4-co"/>) NOT NULL,
+ shortName varchar(3) <coref
+ linkend="sda1_jpaintro_fig_studyCourseEntity-4-co"/> NOT NULL,
@@ -594,23 +629,20 @@ insert into <coref linkend="sda1_jpaintro_fig_inserByTransaction-7-co"/>
"<emphasis role="red">strategy_none</emphasis>"<co
linkends="sda1_jpaintro_fig_readStudyCourseById-1"
xml:id="sda1_jpaintro_fig_readStudyCourseById-1-co"/> );
-
...
-final StudyCourse studyCourse;
-
-tx.begin();
- studyCourse = em.<link xlink:href="???">find</link> <co
+final StudyCourse studyCourse = em.<link xlink:href="???">find</link> <co
linkends="sda1_jpaintro_fig_readStudyCourseById-2"
xml:id="sda1_jpaintro_fig_readStudyCourseById-2-co"/>(StudyCourse.class, "<emphasis
role="red">CSM</emphasis>" <co
linkends="sda1_jpaintro_fig_readStudyCourseById-3"
xml:id="sda1_jpaintro_fig_readStudyCourseById-3-co"/>);
-tx.commit();
-System.out.println("Read + '" + studyCourse + "'"); <co
+System.out.println("Read '" + studyCourse + "'"); <co
linkends="sda1_jpaintro_fig_readStudyCourseById-4"
xml:id="sda1_jpaintro_fig_readStudyCourseById-4-co"/></programlisting>
+
+ <screen>Read 'Computer Science and Media(CSM)'</screen>
</figure>
<calloutlist>
@@ -653,12 +685,185 @@ System.out.println("Read + '" + studyCourse + "'"); <co
<para>Print study course's value.</para>
<note>
- <para>Since the transactional has been committed changes to <code
- language="java">studyCourse</code> won't be propagated to the
- database.</para>
+ <para>Since the transaction has been committed changes to <code
+ language="java">studyCourse</code> are transient and won't be
+ propagated to the database until being attached to another
+ transaction.</para>
</note>
</callout>
</calloutlist>
+
+ <figure xml:id="sda1_jpaintro_fig_readStudyCourseAll">
+ <title>Retrieving all instances</title>
+
+ <programlisting language="java">...
+final Query query = em.createQuery("SELECT s FROM StudyCourse s");
+
+final List<StudyCourse><co
+ linkends="sda1_jpaintro_fig_readStudyCourseAll-1"
+ xml:id="sda1_jpaintro_fig_readStudyCourseAll-1-co"/> studyCourses =<co
+ linkends="sda1_jpaintro_fig_readStudyCourseAll-2"
+ xml:id="sda1_jpaintro_fig_readStudyCourseAll-2-co"/> query.getResultList();
+
+for (final StudyCourse studyCourse: studyCourses) {
+ System.out.println("Read '" + studyCourse + "'"); }</programlisting>
+
+ <calloutlist>
+ <callout arearefs="sda1_jpaintro_fig_readStudyCourseAll-1-co"
+ xml:id="sda1_jpaintro_fig_readStudyCourseAll-1">
+ <para>Notice: <classname
+ xlink:href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html">List</classname>
+ in favour of <classname
+ xlink:href="https://docs.oracle.com/javase/9/docs/api/java/util/Set.html">Set</classname>
+ respecting database ordering.</para>
+ </callout>
+
+ <callout arearefs="sda1_jpaintro_fig_readStudyCourseAll-2-co"
+ xml:id="sda1_jpaintro_fig_readStudyCourseAll-2">
+ <para>Unchecked assignment <classname
+ xlink:href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html">java.util.List</classname>
+ to <classname
+ xlink:href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html">java.util.List</classname><<classname
+ xlink:href="https://gitlab.mi.hdm-stuttgart.de/goik/GoikLectures/blob/master/Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/model/StudyCourse.java">StudyCourse</classname>>.</para>
+ </callout>
+ </calloutlist>
+ </figure>
+
+ <figure xml:id="sda1_jpaintro_fig_readTypeViolate">
+ <title>Type conversion problems</title>
+
+ <programlisting language="java" linenumbering="numbered"
+ startinglinenumber="21">...
+final Query query = em.createQuery("SELECT S.shortName FROM StudyCourse AS S");
+
+final List<StudyCourse> studyCourses = query.getResultList();
+
+try { <co linkends="sda1_jpaintro_fig_readTypeViolate-1"
+ xml:id="sda1_jpaintro_fig_readTypeViolate-1-co"/>
+ for (final StudyCourse studyCourse : studyCourses)<co
+ linkends="sda1_jpaintro_fig_readTypeViolate-2"
+ xml:id="sda1_jpaintro_fig_readTypeViolate-2-co"/> {
+ System.out.println("Read '" + studyCourse + "'");
+ }
+} finally <co linkends="sda1_jpaintro_fig_readTypeViolate-3"
+ xml:id="sda1_jpaintro_fig_readTypeViolate-3-co"/>{
+ factory.close();
+}</programlisting>
+
+ <screen>Exception in thread "main" java.lang.ClassCastException:
+java.lang.String cannot be cast to de.hdm_stuttgart.mi.sda1.model.StudyCourse
+ at de.hdm_stuttgart.mi.sda1.JqlTypeViolation.main(JqlTypeViolation.java:27)</screen>
+ </figure>
+
+ <calloutlist>
+ <callout arearefs="sda1_jpaintro_fig_readTypeViolate-1-co"
+ xml:id="sda1_jpaintro_fig_readTypeViolate-1">
+ <para><code language="java">try</code> block required for later
+ cleanup.</para>
+ </callout>
+
+ <callout arearefs="sda1_jpaintro_fig_readTypeViolate-2-co"
+ xml:id="sda1_jpaintro_fig_readTypeViolate-2">
+ <para>The culprit causing the <classname
+ xlink:href="https://docs.oracle.com/javase/9/docs/api/java/lang/ClassCastException.html">ClassCastException</classname>.</para>
+ </callout>
+
+ <callout arearefs="sda1_jpaintro_fig_readTypeViolate-3-co"
+ xml:id="sda1_jpaintro_fig_readTypeViolate-3">
+ <para>Cleaning up persistence context.</para>
+ </callout>
+ </calloutlist>
+
+ <figure xml:id="sda1_jpaintro_fig_readShortNames">
+ <title>Reading <code language="java">shortName</code> values</title>
+
+ <programlisting language="java">...
+final Query query = em.createQuery("SELECT S.shortName FROM StudyCourse AS S");
+final List<StudyCourse> studyCourses = query.getResultList();
+
+try {
+ for (final StudyCourse studyCourse : studyCourses) {
+ System.out.println("Read '" + studyCourse + "'");
+ }
+} finally {
+ factory.close();
+}</programlisting>
+
+ <screen>Read 'CSM'</screen>
+ </figure>
+ </section>
+
+ <section xml:id="sda1_jpaintro_sect_UpdateStudyCourse">
+ <title>Updating objects</title>
+
+ <figure xml:id="sda1_jpaintro_fig_addStudyCourseFullNameSetter">
+ <title> Adding a setter</title>
+
+ <programlisting language="java">@Entity
+public class StudyCourse {
+ @Id @Column(length = 3) private String shortName;
+
+ @Column(length = 150, nullable = false, unique = true)
+ private String fullName;
+
+ public void setFullName(final String fullName) {
+ this.fullName = fullName;
+ }
+ ...
+}</programlisting>
+ </figure>
+
+ <figure xml:id="sda1_jpaintro_fig_updateStudyCourse">
+ <title>Update language</title>
+
+ <informaltable border="0">
+ <tr>
+ <td valign="top"><programlisting language="java">final StudyCourse csm <co
+ linkends="sda1_jpaintro_fig_updateStudyCourse-1"
+ xml:id="sda1_jpaintro_fig_updateStudyCourse-1-co"/>=
+ em.find(StudyCourse.class, "CSM");
+
+final EntityTransaction tx =
+ em.getTransaction();
+tx.begin();
+ csm.setFullName( <co linkends="sda1_jpaintro_fig_updateStudyCourse-2"
+ xml:id="sda1_jpaintro_fig_updateStudyCourse-2-co"/>
+ "Computerwissenschaft und Medien");
+tx.commit(); <co linkends="sda1_jpaintro_fig_updateStudyCourse-3"
+ xml:id="sda1_jpaintro_fig_updateStudyCourse-3-co"/></programlisting></td>
+
+ <td valign="top"><screen>MariaDB [hdm]>
+ select * from StudyCourse;
++-----------+----------------------+
+| shortName | fullName |
++-----------+----------------------+
+| CSM | Computerwissenschaft |
+| | und Medien |
++-----------+----------------------+</screen></td>
+ </tr>
+ </informaltable>
+ </figure>
+
+ <calloutlist>
+ <callout arearefs="sda1_jpaintro_fig_updateStudyCourse-1-co"
+ xml:id="sda1_jpaintro_fig_updateStudyCourse-1">
+ <para>Retrieving instance from database. Variable <code
+ language="java">csm</code> is bound to the persistence
+ context.</para>
+ </callout>
+
+ <callout arearefs="sda1_jpaintro_fig_updateStudyCourse-2-co"
+ xml:id="sda1_jpaintro_fig_updateStudyCourse-2">
+ <para>Changing instance's <code language="java">fullName</code>
+ property's value.</para>
+ </callout>
+
+ <callout arearefs="sda1_jpaintro_fig_updateStudyCourse-3-co"
+ xml:id="sda1_jpaintro_fig_updateStudyCourse-3">
+ <para>Committing transaction will automatically commit all
+ persistence context related changes.</para>
+ </callout>
+ </calloutlist>
</section>
</section>
@@ -690,7 +895,8 @@ System.out.println("Read + '" + studyCourse + "'"); <co
<orderedlist>
<listitem>
- <para>Execute
+ <para>Get used to <xref linkend="glo_JPA"/> using the existing
+ data model first. Execute
<classname>jpaintro.university.CreateAirline</classname> and
watch the generated <xref linkend="glo_SQL"/>
statements.</para>