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42 lines
1.4 KiB
Java
42 lines
1.4 KiB
Java
Using EJB meta data
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package com.ack.j2ee.ejb.simple;
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import javax.ejb.EJBHome;
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import javax.ejb.EJBMetaData;
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import javax.naming.InitialContext;
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import javax.rmi.PortableRemoteObject;
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import com.ack.j2ee.ejb.session.InformerHome;
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public class UsingEJBMetaData {
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public static void main( String[] args ) throws Exception {
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// get handle into the EJB naming directory
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InitialContext ctx = new InitialContext();
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// get hold of the object you want by name
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Object ejbObject = ctx.lookup( "ejb/informer" );
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// narrow retrieved object into specific expected type
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InformerHome home = (InformerHome) PortableRemoteObject.
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narrow( ejbObject, InformerHome.class );
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// get meta data regarding the ejb off its home interface
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EJBMetaData md = home.getEJBMetaData();
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// get the ejb home
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EJBHome homeInterface = md.getEJBHome();
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System.out.println( "is stateless session: " + md.isStatelessSession() );
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System.out.println( "is session bean: " + md.isSession() );
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System.out.println( md.getRemoteInterfaceClass().getName() );
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System.out.println( md.getHomeInterfaceClass().getName() );
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if( md.isSession() == false ) {
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// must be an entity bean, because message-driven beans
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// don't have home interfaces, hence no meta-data
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System.out.println( md.getPrimaryKeyClass().getName() );
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}
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}
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}
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