configuring hyperjaxb to create hibernate mappings

2019-08-29 11:13发布

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问题:

I am using hyperjaxb to generate Java classes from an xsd file. How can I configure it to generate hibernate annotations, and to trigger hbm2ddl to create a MySQL database with tables for the generated classes?

I downloaded the purchase order sample for hibernate from this link, then navigated to the target directory in cmd.exe and ran mvn clean install, but the resulting folders did not contain any java classes, and this also did not contain any hibernate/MySQL. I would like to get a working example that creates everything from a downloaded xsd file so that I can just plug my own xsd file into the code and have all the java/hibernate/mysql be autogenerated. That way I can spend my time tweaking my xsd file so that the resulting java/hibernate/MySQL is what I need it to be.

A code example or step by step instructions would be really helpful. I am using eclipse.

EDIT:

The answer to this question came after posting a few other questions. To find the complete answer to this question, you will need to review the answers to those other questions, in particular, the one at this link.

回答1:

UPDATE

Finally it appeared that the OP was looking for generated classes in the root directory of the project insteadof target\generated-source\xjc, despite the tutorial clearly states where to look:

If you browse the target/generated-sources/xjc directory, you'll find few generated java files, for instance PurchaseOrderType.java.

I don't understand it when you say that nothing is generated. I've just rechecked it, everything works fine.

My steps are:

Download hyperjaxb3-ejb-samples-po-initial-0.5.6-maven-src.zip
Unzip
Go to hyperjaxb3-ejb-samples-po-initial-0.5.6
mvn clean install

Here's what I get:

[INFO] ------------------------------------------------------------------------
[INFO] Building Hyperjaxb3 Samples [po-initial:maven] 0.5.6
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ hyperjaxb3-ejb-samples-po-initial-maven ---
[INFO] Deleting C:\Projects\workspaces\hj3\dist\hyperjaxb3-ejb-samples-po-initial-0.5.6\target
[INFO] 
[INFO] --- maven-hyperjaxb3-plugin:0.6.0:generate (default) @ hyperjaxb3-ejb-samples-po-initial-maven ---
[INFO] Sources are not up-to-date; XJC execution will be executed.
[WARNING] According to the Java Persistence API specification, section 2.1, entities must be top-level classes:
"The entity class must be a top-level class."
Your JAXB model is not customized as with top-level local scoping, please use the <jaxb:globalBinding localScoping="toplevel"/> global bindings customization.
        org.jvnet.hyperjaxb3.ejb.plugin.EjbPlugin

[WARNING] According to the Java Persistence API specification, section 2.1, entities must implement the serializable interface:
"If an entity instance is to be passed by value as a detached object
(e.g., through a remote interface), the entity class must implement
 the Serializable interface."
Your JAXB model is not customized as serializable, please use the <jaxb:serializable/> global bindings customization element to make your model serializable.
        org.jvnet.hyperjaxb3.ejb.plugin.EjbPlugin

[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ hyperjaxb3-ejb-samples-po-initial-maven ---
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 1 resource
[INFO] Copying 0 resource
[INFO] Copying 1 resource
[INFO] 
[INFO] --- maven-compiler-plugin:2.5.1:compile (default-compile) @ hyperjaxb3-ejb-samples-po-initial-maven ---
[WARNING] File encoding has not been set, using platform encoding Cp1252, i.e. build is platform dependent!
[INFO] Compiling 5 source files to C:\Projects\workspaces\hj3\dist\hyperjaxb3-ejb-samples-po-initial-0.5.6\target\classes
[INFO] 
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ hyperjaxb3-ejb-samples-po-initial-maven ---
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 2 resources
[INFO] 
[INFO] --- maven-compiler-plugin:2.5.1:testCompile (default-testCompile) @ hyperjaxb3-ejb-samples-po-initial-maven ---
[WARNING] File encoding has not been set, using platform encoding Cp1252, i.e. build is platform dependent!
[INFO] Compiling 5 source files to C:\Projects\workspaces\hj3\dist\hyperjaxb3-ejb-samples-po-initial-0.5.6\target\test-classes
[INFO] 
[INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ hyperjaxb3-ejb-samples-po-initial-maven ---
[INFO] Surefire report directory: C:\Projects\workspaces\hj3\dist\hyperjaxb3-ejb-samples-po-initial-0.5.6\target\surefire-reports

-------------------------------------------------------
 T E S T S
-------------------------------------------------------
Running RoundtripTest
Detected [file:/C:/Projects/workspaces/hj3/dist/hyperjaxb3-ejb-samples-po-initial-0.5.6/target/classes/META-INF/persistence.xml].
    RoundtripTest

Loading entity manager factory properties.
    RoundtripTest

Loading entity manager factory properties from [file:/C:/Projects/workspaces/hj3/dist/hyperjaxb3-ejb-samples-po-initial-0.5.6/target/test-classes/persistence.properties].
    RoundtripTest

Testing samples.
    RoundtripTest

Sample directory [C:\Projects\workspaces\hj3\dist\hyperjaxb3-ejb-samples-po-initial-0.5.6\src\test\samples].
    RoundtripTest

Testing sample [po.xml].
    RoundtripTest

Unmarshalling.
    RoundtripTest

Opening session.
    RoundtripTest

Saving the object.
    RoundtripTest

Opening session.
    RoundtripTest

Loading the object.
    RoundtripTest

Closing the session.
    RoundtripTest

Initial object:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<purchaseOrder orderDate="1999-10-20">
    <shipTo country="US">
        <name>Alice Smith</name>
        <street>123 Maple Street</street>
        <city>Mill Valley</city>
        <state>CA</state>
        <zip>90952</zip>
    </shipTo>
    <billTo country="US">
        <name>Robert Smith</name>
        <street>8 Oak Avenue</street>
        <city>Old Town</city>
        <state>PA</state>
        <zip>95819</zip>
    </billTo>
    <comment>Hurry, my lawn is going wild!</comment>
    <items>
        <item partNum="872-AA">
            <productName>Lawnmower</productName>
            <quantity>1</quantity>
            <USPrice>148.95</USPrice>
            <comment>Confirm this is electric</comment>
        </item>
        <item partNum="926-AA">
            <productName>Baby Monitor</productName>
            <quantity>1</quantity>
            <USPrice>39.98</USPrice>
            <shipDate>1999-05-21</shipDate>
        </item>
    </items>
</purchaseOrder>

    RoundtripTest

Source object:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<purchaseOrder orderDate="1999-10-20" Hjid="1">
    <shipTo country="US" Hjid="2">
        <name>Alice Smith</name>
        <street>123 Maple Street</street>
        <city>Mill Valley</city>
        <state>CA</state>
        <zip>90952</zip>
    </shipTo>
    <billTo country="US" Hjid="1">
        <name>Robert Smith</name>
        <street>8 Oak Avenue</street>
        <city>Old Town</city>
        <state>PA</state>
        <zip>95819</zip>
    </billTo>
    <comment>Hurry, my lawn is going wild!</comment>
    <items Hjid="1">
        <item partNum="872-AA" Hjid="1">
            <productName>Lawnmower</productName>
            <quantity>1</quantity>
            <USPrice>148.95</USPrice>
            <comment>Confirm this is electric</comment>
        </item>
        <item partNum="926-AA" Hjid="2">
            <productName>Baby Monitor</productName>
            <quantity>1</quantity>
            <USPrice>39.98</USPrice>
            <shipDate>1999-05-21</shipDate>
        </item>
    </items>
</purchaseOrder>

    RoundtripTest

Result object:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<purchaseOrder orderDate="1999-10-20" Hjid="1">
    <shipTo country="US" Hjid="2">
        <name>Alice Smith</name>
        <street>123 Maple Street</street>
        <city>Mill Valley</city>
        <state>CA</state>
        <zip>90952</zip>
    </shipTo>
    <billTo country="US" Hjid="1">
        <name>Robert Smith</name>
        <street>8 Oak Avenue</street>
        <city>Old Town</city>
        <state>PA</state>
        <zip>95819</zip>
    </billTo>
    <comment>Hurry, my lawn is going wild!</comment>
    <items Hjid="1">
        <item partNum="872-AA" Hjid="1">
            <productName>Lawnmower</productName>
            <quantity>1</quantity>
            <USPrice>148.95</USPrice>
            <comment>Confirm this is electric</comment>
        </item>
        <item partNum="926-AA" Hjid="2">
            <productName>Baby Monitor</productName>
            <quantity>1</quantity>
            <USPrice>39.98</USPrice>
            <shipDate>1999-05-21</shipDate>
        </item>
    </items>
</purchaseOrder>

    RoundtripTest

Checking the document identity.
    RoundtripTest

Finished testing sample [po.xml].
    RoundtripTest

Finished testing samples.
    RoundtripTest

Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 2.552 sec

Results :

Tests run: 1, Failures: 0, Errors: 0, Skipped: 0

[INFO] 
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ hyperjaxb3-ejb-samples-po-initial-maven ---
[INFO] Building jar: C:\Projects\workspaces\hj3\dist\hyperjaxb3-ejb-samples-po-initial-0.5.6\target\hyperjaxb3-ejb-samples-po-initial-maven-0.5.6.jar
[INFO] 
[INFO] --- maven-install-plugin:2.4:install (default-install) @ hyperjaxb3-ejb-samples-po-initial-maven ---
[INFO] Installing C:\Projects\workspaces\hj3\dist\hyperjaxb3-ejb-samples-po-initial-0.5.6\target\hyperjaxb3-ejb-samples-po-initial-maven-0.5.6.jar to C:\Repository\org\jvnet\hyperjaxb3\hyperjaxb3-ejb-samples-po-initial-maven\0.5.6\hyperjaxb3-ejb-samples-po-initial-maven-0.5.6.jar
[INFO] Installing C:\Projects\workspaces\hj3\dist\hyperjaxb3-ejb-samples-po-initial-0.5.6\pom.xml to C:\Repository\org\jvnet\hyperjaxb3\hyperjaxb3-ejb-samples-po-initial-maven\0.5.6\hyperjaxb3-ejb-samples-po-initial-maven-0.5.6.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 12.100 s
[INFO] Finished at: 2014-10-09T00:42:10+01:00
[INFO] Final Memory: 22M/96M
[INFO] ------------------------------------------------------------------------

Full mvn clean install -X log is here.

So I hope you see, it works perfectly. Please post you mvn clean install -X, maybe you do something wrong.

Now, concerning your question, here's the MySQL example:

https://github.com/highsource/hyperjaxb3/tree/master/ejb/tests/po-mysql

This project includes a snippet of hbm2ddl generation:

https://github.com/highsource/hyperjaxb3/tree/master/ejb/tests/issues

The hbm2ddl is commented out for some reason, not sure if it works, but it should give the direction.

回答2:

This is a part of another answer which answers the MySQL part. I add this here for future reference in an attempt to close this question.

So from now on I assume that the PO tutorial worked fine: the code was generated, roundtrip test ran with the HSQLDB database etc.

Now we'll address two questions:

How to switch to MySQL?
How to generate database schema with hbm2ddl?

Let's get started.

Switching to MySQL

First of all, you have to replace HSQLDB with MySQL in the pom.xml. Remove this:

    <dependency>
        <groupId>hsqldb</groupId>
        <artifactId>hsqldb</artifactId>
        <version>1.8.0.7</version>
        <scope>test</scope>
    </dependency>

And add this:

    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.0.5</version>
        <scope>test</scope>
    </dependency>

Next, edit src/test/resources/persistence.properties. Replace this:

hibernate.dialect=org.hibernate.dialect.HSQLDialect
hibernate.connection.driver_class=org.hsqldb.jdbcDriver
hibernate.connection.username=sa
hibernate.connection.password=
hibernate.connection.url=jdbc:hsqldb:target/test-database/database
hibernate.hbm2ddl.auto=create-drop
hibernate.cache.provider_class=org.hibernate.cache.HashtableCacheProvider
hibernate.jdbc.batch_size=0

With this:

hibernate.dialect=org.hibernate.dialect.MySQLDialect
hibernate.connection.driver_class=com.mysql.jdbc.Driver
hibernate.connection.username=...
hibernate.connection.password=...
hibernate.connection.url=jdbc:mysql://localhost/hj3
hibernate.hbm2ddl.auto=create-drop
hibernate.cache.provider_class=org.hibernate.cache.HashtableCacheProvider
hibernate.jdbc.batch_size=0

I personally don't have a MySQL database at hand at the moment, so I can't really test the roundtrip. Therefore I'll comment out

<!--roundtripTestClassName>RoundtripTest</roundtripTestClassName-->

in pom.xml.

If you have a database at hand, just configure the right URL/username/password in the mentioned persistence.properties file.

At this point your Maven project is reconfigured to use MySQL. If the roundtrip test is not commented out and the database is available, the roundrip test should run with the DB, i.e. create the schema, import the sample XML, read it back and compare alpha and omega.

So now we have the tutorial on MySQL and can move on.

Generating the database schema

This was a tricky part to figure out.

In order to generate the database schema in a file, you have to use the hbm2ddl tool. There are Maven plugins for that, in case of Hibernate 3 it seemed that the Codehaus plugin is the leading one. Finally, I have figured out the following configuration. You have to add the following plugin to your pom.xml (project/build/plugins):

        <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>hibernate3-maven-plugin</artifactId>
            <version>3.0</version>
            <executions>
                <execution>
                    <id>generate-schema</id>
                    <phase>compile</phase>
                    <goals>
                        <goal>run</goal>
                    </goals>
                </execution>
            </executions>
            <configuration>
                <hibernatetool>
                    <classpath>
                        <path location="${project.build.directory}/classes" />
                    </classpath>

                    <jpaconfiguration persistenceunit="org.jvnet.hyperjaxb3.ejb.tests.pocustomized" propertyfile="src/test/resources/persistence.properties"/>

                    <hbm2ddl export="false" create="true" update="false" format="true" outputfilename="schema.ddl" />

                </hibernatetool>
            </configuration>
            <dependencies>
                <dependency>
                    <groupId>org.hibernate.javax.persistence</groupId>
                    <artifactId>hibernate-jpa-2.0-api</artifactId>
                    <version>1.0.0.Final</version>
                </dependency>
                <dependency>
                    <groupId>org.hibernate</groupId>
                    <artifactId>hibernate-entitymanager</artifactId>
                    <version>3.6.5.Final</version>
                </dependency>
                <dependency>
                    <groupId>mysql</groupId>
                    <artifactId>mysql-connector-java</artifactId>
                    <version>5.0.5</version>
                </dependency>
            </dependencies>
        </plugin>

Few things are important:

Hyperjaxb3 generates JPA annotations, so you have to use jpaconfiguration.
Therefore the hibernate3-maven-plugin must be executed in the compile phase (you need classes to read annotations from so they have to be compiled at that moment).
You have to include the compiled classes (${project.build.directory}/classes) to the hibernatetool's classpath so that it can discover classes and read annotations.
You have to let the hibernatetool know where you find your Hibernate properties (propertyfile="src/test/resources/persistence.properties").
Finally you have to let it know, which persistence unit you want to process (persistenceunit="org.jvnet.hyperjaxb3.ejb.tests.pocustomized"). Take a look at target/generated-sources/xjc/META-INF/persistence.xml.
Finally, add all the required dependencies.

Finally you arrive at the configuration I posted above. At this point the build should also generate the database schema in target/sql/hibernate3/schema.ddl.