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package org.glassfish.javaee.services;
import org.glassfish.api.naming.NamingObjectProxy;
import org.glassfish.internal.api.Globals;
import org.jvnet.hk2.annotations.Service;
import org.jvnet.hk2.annotations.Scoped;
import org.jvnet.hk2.annotations.Inject;
import org.jvnet.hk2.component.PerLookup;
import org.jvnet.hk2.component.Habitat;
import javax.naming.Context;
import javax.naming.NamingException;
import com.sun.enterprise.deployment.DataSourceDefinitionDescriptor;
import com.sun.appserv.connectors.internal.spi.ResourceDeployer;
import com.sun.appserv.connectors.internal.api.ConnectorsUtil;
import java.io.Serializable;
import java.util.Collection;
/**
* This resource proxy will not bind the actual object upon first lookup unlike
* org.glassfish.javaee.services.ResourceProxy. <br><br>
* It holds the information required to get the actual object upon requests.<br>
*
* This is used for @DataSourceDefinition<br>
* Upon first lookup, the datasource is created, deployed and the internal jndi-name is given to the
* proxy, using the internal jndi-name actual resource is returned.<br>
* On further lookups, internal jndi-name is used to get the actual resource.<br>
*
*/
@Service
@Scoped(PerLookup.class)
public class DataSourceDefinitionProxy implements NamingObjectProxy.InitializationNamingObjectProxy, Serializable {
@Inject
private transient Habitat habitat;
private DataSourceDefinitionDescriptor desc;
private String actualResourceName;
public Object create(Context ic) throws NamingException {
if(actualResourceName == null){
actualResourceName = ConnectorsUtil.deriveDataSourceDefinitionResourceName
(desc.getResourceId(), desc.getName());
try{
if(habitat == null){
habitat = Globals.getDefaultHabitat();
if(habitat == null){
throw new NamingException("Unable to create resource " +
"["+ desc.getName() +" ] as habitat is null");
}
}
getResourceDeployer(desc, habitat.getAllByContract(ResourceDeployer.class)).deployResource(desc);
}catch(Exception e){
NamingException ne = new NamingException("Unable to create resource ["+ desc.getName() +" ]");
ne.initCause(e);
throw ne;
}
}
return ic.lookup(actualResourceName);
}
public void setDescriptor(DataSourceDefinitionDescriptor desc){
this.desc = desc;
}
private ResourceDeployer getResourceDeployer(Object resource, Collection<ResourceDeployer> deployers) {
ResourceDeployer resourceDeployer = null;
for(ResourceDeployer deployer : deployers){
if(deployer.handles(resource)){
resourceDeployer = deployer;
break;
}
}
return resourceDeployer;
}
}