Custom Injection
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Pickup
package org.superbiz.enventries;
//START SNIPPET: code
import java.beans.PropertyEditorManager;
public enum Pickup {
HUMBUCKER,
SINGLE_COIL;
// Here's the little magic where we register the PickupEditor
// which knows how to create this object from a string.
// You can add any of your own Property Editors in the same way.
static {
PropertyEditorManager.registerEditor(Pickup.class, PickupEditor.class);
}
}
PickupEditor
package org.superbiz.enventries;
/**
* With a java.beans.PropertyEditor, you can go way beyond the built-in
* types that OpenEJB supports and can extend dependency injection to
* just about anywhere.
* <p/>
* In the world of electric guitars, two types of pickups are used: humbucking, and single-coil.
* Guitarists often refer to their guitars as HSS, meaning a guitar with 1 humbucker and
* 2 single coil pickups, and so on. This little PropertyEditor supports that shorthand notation.
*
* @version $Revision$ $Date$
*/
//START SNIPPET: code
public class PickupEditor extends java.beans.PropertyEditorSupport {
public void setAsText(String text) throws IllegalArgumentException {
text = text.trim();
if (text.equalsIgnoreCase("H")) setValue(Pickup.HUMBUCKER);
else if (text.equalsIgnoreCase("S")) setValue(Pickup.SINGLE_COIL);
else throw new IllegalStateException("H and S are the only supported Pickup aliases");
}
}
Stratocaster
package org.superbiz.enventries;
import javax.annotation.Resource;
import javax.ejb.Stateless;
import java.io.File;
import java.util.Date;
import java.util.List;
import java.util.Map;
/**
* In addition to the standard env-entry types (String, Integer, Long, Short, Byte, Boolean, Double, Float, Character)
* OpenEJB supports many other types.
*/
//START SNIPPET: code
@Stateless
public class Stratocaster {
@Resource(name = "pickups")
private List<Pickup> pickups;
@Resource(name = "style")
private Style style;
@Resource(name = "dateCreated")
private Date dateCreated;
@Resource(name = "guitarStringGuages")
private Map<String, Float> guitarStringGuages;
@Resource(name = "certificateOfAuthenticity")
private File certificateOfAuthenticity;
public Date getDateCreated() {
return dateCreated;
}
/**
* Gets the guage of the electric guitar strings
* used in this guitar.
*
* @param string
* @return
*/
public float getStringGuage(String string) {
return guitarStringGuages.get(string);
}
public List<Pickup> getPickups() {
return pickups;
}
public Style getStyle() {
return style;
}
public File getCertificateOfAuthenticity() {
return certificateOfAuthenticity;
}
}
Style
package org.superbiz.enventries;
/**
* @version $Revision$ $Date$
*/
//START SNIPPET: code
public enum Style {
STANDARD,
DELUX,
VINTAGE;
}
StratocasterTest
package org.superbiz.enventries;
import junit.framework.TestCase;
import javax.ejb.EJB;
import javax.ejb.embeddable.EJBContainer;
import java.io.File;
import java.text.DateFormat;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import static java.util.Arrays.asList;
/**
* @version $Rev: 1090810 $ $Date: 2011-04-10 07:49:26 -0700 (Sun, 10 Apr 2011) $
*/
//START SNIPPET: code
public class StratocasterTest extends TestCase {
@EJB
private Stratocaster strat;
public void test() throws Exception {
EJBContainer.createEJBContainer().getContext().bind("inject", this);
Date date = DateFormat.getDateInstance(DateFormat.MEDIUM, Locale.US).parse("Mar 1, 1962");
assertEquals("Strat.getDateCreated()", date, strat.getDateCreated());
List<Pickup> pickups = asList(Pickup.SINGLE_COIL, Pickup.SINGLE_COIL, Pickup.SINGLE_COIL);
assertEquals("Strat.getPickups()", pickups, strat.getPickups());
assertEquals("Strat.getStyle()", Style.VINTAGE, strat.getStyle());
assertEquals("Strat.getStringGuage(\"E1\")", 0.052F, strat.getStringGuage("E1"));
assertEquals("Strat.getStringGuage(\"A\")", 0.042F, strat.getStringGuage("A"));
assertEquals("Strat.getStringGuage(\"D\")", 0.030F, strat.getStringGuage("D"));
assertEquals("Strat.getStringGuage(\"G\")", 0.017F, strat.getStringGuage("G"));
assertEquals("Strat.getStringGuage(\"B\")", 0.013F, strat.getStringGuage("B"));
assertEquals("Strat.getStringGuage(\"E\")", 0.010F, strat.getStringGuage("E"));
File file = new File("/tmp/strat-certificate.txt");
assertEquals("Strat.getCertificateOfAuthenticity()", file, strat.getCertificateOfAuthenticity());
}
}
Running
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running org.superbiz.enventries.StratocasterTest
Apache OpenEJB 4.0.0-beta-1 build: 20111002-04:06
http://tomee.apache.org/
INFO - openejb.home = /Users/dblevins/examples/custom-injection
INFO - openejb.base = /Users/dblevins/examples/custom-injection
INFO - Using 'javax.ejb.embeddable.EJBContainer=true'
INFO - Configuring Service(id=Default Security Service, type=SecurityService, provider-id=Default Security Service)
INFO - Configuring Service(id=Default Transaction Manager, type=TransactionManager, provider-id=Default Transaction Manager)
INFO - Found EjbModule in classpath: /Users/dblevins/examples/custom-injection/target/classes
INFO - Beginning load: /Users/dblevins/examples/custom-injection/target/classes
INFO - Configuring enterprise application: /Users/dblevins/examples/custom-injection
WARN - Method 'lookup' is not available for 'javax.annotation.Resource'. Probably using an older Runtime.
INFO - Configuring Service(id=Default Stateless Container, type=Container, provider-id=Default Stateless Container)
INFO - Auto-creating a container for bean Stratocaster: Container(type=STATELESS, id=Default Stateless Container)
INFO - Configuring Service(id=Default Managed Container, type=Container, provider-id=Default Managed Container)
INFO - Auto-creating a container for bean org.superbiz.enventries.StratocasterTest: Container(type=MANAGED, id=Default Managed Container)
INFO - Enterprise application "/Users/dblevins/examples/custom-injection" loaded.
INFO - Assembling app: /Users/dblevins/examples/custom-injection
INFO - Jndi(name="java:global/custom-injection/Stratocaster!org.superbiz.enventries.Stratocaster")
INFO - Jndi(name="java:global/custom-injection/Stratocaster")
INFO - Jndi(name="java:global/EjbModule1663626738/org.superbiz.enventries.StratocasterTest!org.superbiz.enventries.StratocasterTest")
INFO - Jndi(name="java:global/EjbModule1663626738/org.superbiz.enventries.StratocasterTest")
INFO - Created Ejb(deployment-id=Stratocaster, ejb-name=Stratocaster, container=Default Stateless Container)
INFO - Created Ejb(deployment-id=org.superbiz.enventries.StratocasterTest, ejb-name=org.superbiz.enventries.StratocasterTest, container=Default Managed Container)
INFO - Started Ejb(deployment-id=Stratocaster, ejb-name=Stratocaster, container=Default Stateless Container)
INFO - Started Ejb(deployment-id=org.superbiz.enventries.StratocasterTest, ejb-name=org.superbiz.enventries.StratocasterTest, container=Default Managed Container)
INFO - Deployed Application(path=/Users/dblevins/examples/custom-injection)
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.11 sec
Results :
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0