net.java.ao.builder.ConnectionPool Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of activeobjects Show documentation
Show all versions of activeobjects Show documentation
This is the full Active Objects library, if you don't know which one to use, you probably want this one.
The newest version!
package net.java.ao.builder;
import net.java.ao.ActiveObjectsException;
import net.java.ao.Disposable;
import net.java.ao.DisposableDataSource;
import net.java.ao.builder.c3po.C3poDataSourceFactory;
import net.java.ao.builder.dbcp.DbcpDataSourceFactory;
import net.java.ao.builder.dbpool.DbPoolDataSourceFactory;
import net.java.ao.builder.proxool.ProxoolDataSourceFactory;
import java.lang.reflect.InvocationTargetException;
import java.sql.Driver;
import java.util.Objects;
public enum ConnectionPool implements DataSourceFactory {
C3PO(C3poDataSourceFactory.class),
DBPOOL(DbPoolDataSourceFactory.class),
PROXOOL(ProxoolDataSourceFactory.class),
DBCP(DbcpDataSourceFactory.class),
NONE(null) {
@Override
public boolean isAvailable() {
return true;
}
@Override
public DisposableDataSource getDataSource(Class extends Driver> driverClass, String url, String username, String password) {
return DelegatingDisposableDataSourceHandler.newInstance(
new DriverManagerDataSource(url, username, password),
new Disposable() {
public void dispose() {
}
});
}
};
private final Class extends DataSourceFactory> dataSourceFactoryClass;
ConnectionPool(Class extends DataSourceFactory> dataSourceFactoryClass) {
this.dataSourceFactoryClass = dataSourceFactoryClass;
}
public DisposableDataSource getDataSource(Class extends Driver> driverClass, String url, String username, String password) {
Objects.requireNonNull(dataSourceFactoryClass, "dataSourceFactoryClass can't be null");
try {
return dataSourceFactoryClass.newInstance().getDataSource(driverClass, url, username, password);
} catch (InstantiationException | IllegalAccessException e) {
throw new ActiveObjectsException("Could not create an instance of <" + dataSourceFactoryClass + ">, have you called isAvailable before hand?", e);
}
}
public boolean isAvailable() {
Objects.requireNonNull(dataSourceFactoryClass, "dataSourceFactoryClass can't be null");
try {
return (Boolean) dataSourceFactoryClass.getMethod("isAvailable").invoke(null);
} catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
return false;
}
}
}