org.glassfish.jdbcruntime.DefaultDataSource Maven / Gradle / Ivy
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package org.glassfish.jdbcruntime;
import javax.naming.NamingException;
import javax.sql.DataSource;
import org.glassfish.api.naming.DefaultResourceProxy;
import org.glassfish.api.naming.NamedNamingObjectProxy;
import org.glassfish.api.naming.NamespacePrefixes;
import org.jvnet.hk2.annotations.Service;
/**
* Naming Object Proxy to handle the Default Data Source.
* Maps to a pre-configured data source, when binding for
* a datasource reference is absent in the @Resource annotation.
*
* @author Shalini M
*/
@Service
@NamespacePrefixes({DefaultDataSource.DEFAULT_DATASOURCE})
public class DefaultDataSource implements NamedNamingObjectProxy, DefaultResourceProxy {
static final String DEFAULT_DATASOURCE = "java:comp/DefaultDataSource";
static final String DEFAULT_DATASOURCE_PHYS = "jdbc/__default";
private DataSource dataSource;
@Override
public Object handle(String name) throws NamingException {
if(dataSource == null) {
javax.naming.Context ctx = new javax.naming.InitialContext();
// cache the datasource to avoid JNDI lookup overheads
dataSource = (DataSource)ctx.lookup(DEFAULT_DATASOURCE_PHYS);
}
return dataSource;
}
@Override
public String getPhysicalName() {
return DEFAULT_DATASOURCE_PHYS;
}
@Override
public String getLogicalName() {
return DEFAULT_DATASOURCE;
}
}