org.glassfish.osgijdbc.DataSourceFactoryImpl Maven / Gradle / Ivy
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package org.glassfish.osgijdbc;
import org.osgi.framework.BundleContext;
import org.osgi.service.jdbc.DataSourceFactory;
import javax.sql.ConnectionPoolDataSource;
import javax.sql.DataSource;
import javax.sql.XADataSource;
import java.beans.*;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.sql.Driver;
import java.sql.SQLException;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;
public class DataSourceFactoryImpl implements DataSourceFactory {
// represents the driver implementation class names for various types
// java.sql.Driver, javax.sql.DataSource, javax.sql.ConnectionPoolDataSource, javax.sql.XADataSource
private Dictionary header;
private BundleContext driverBundleContext;
private static final Logger logger = Logger.getLogger(
DataSourceFactoryImpl.class.getPackage().getName());
private static final Locale locale = Locale.getDefault();
public DataSourceFactoryImpl(BundleContext context) {
this.header = context.getBundle().getHeaders();
this.driverBundleContext = context;
}
public DataSource createDataSource(Properties props) throws SQLException {
String dataSourceClass = (String) header.get(Constants.DS.replace('.', '_'));
try {
Class dsClass = driverBundleContext.getBundle().loadClass(dataSourceClass);
DataSource ds = (DataSource) dsClass.newInstance();
populateBean(props, dsClass, ds);
return ds;
} catch (Exception e) {
throw new SQLException(e);
}
}
public ConnectionPoolDataSource createConnectionPoolDataSource(Properties props) throws SQLException {
String cpdsClassName = (String) header.get(Constants.CPDS.replace('.', '_'));
try {
Class cpdsClass = driverBundleContext.getBundle().loadClass(cpdsClassName);
ConnectionPoolDataSource cpds = (ConnectionPoolDataSource) cpdsClass.newInstance();
populateBean(props, cpdsClass, cpds);
return cpds;
} catch (Exception e) {
throw new SQLException(e);
}
}
public XADataSource createXADataSource(Properties props) throws SQLException {
String xadsClassName = (String) header.get(Constants.XADS.replace('.', '_'));
try {
Class xadsClass = driverBundleContext.getBundle().loadClass(xadsClassName);
XADataSource xads = (XADataSource) xadsClass.newInstance();
populateBean(props, xadsClass, xads);
return xads;
} catch (Exception e) {
throw new SQLException(e);
}
}
public Driver createDriver(Properties props) throws SQLException {
String driverClassName = (String) header.get(Constants.DRIVER.replace('.', '_'));
try {
Class driverClass = driverBundleContext.getBundle().loadClass(driverClassName);
Driver driver = (Driver) driverClass.newInstance();
populateBean(props, driverClass, driver);
//register the driver with JDBC Driver Manager
Class.forName(driverClassName, false, driverClass.getClassLoader());
return driver;
} catch (Exception e) {
throw new SQLException(e);
}
}
private void populateBean(Properties properties, Class clazz, Object object) throws IntrospectionException,
IllegalAccessException, InvocationTargetException, SQLException {
if (properties == null) return; // nothing to do. DSF.createXXX allows null value
BeanInfo beanInfo = Introspector.getBeanInfo(clazz);
PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();
Set keys = properties.keySet();
Iterator keyIterator = keys.iterator();
while (keyIterator.hasNext()) {
String propertyName = (String) keyIterator.next();
String value = properties.getProperty(propertyName);
boolean propertyFound = false;
for (PropertyDescriptor desc : propertyDescriptors) {
if (desc.getName().equalsIgnoreCase(propertyName)) {
String type = desc.getPropertyType().getName();
Object result = null;
if (type != null) {
type = type.toUpperCase(locale);
try {
if (type.endsWith("INT") || type.endsWith("INTEGER")) {
result = Integer.valueOf(value);
} else if (type.endsWith("LONG")) {
result = Long.valueOf(value);
} else if (type.endsWith("DOUBLE")) {
result = Double.valueOf(value);
} else if (type.endsWith("FLOAT")) {
result = Float.valueOf(value);
} else if (type.endsWith("CHAR") || type.endsWith("CHARACTER")) {
result = value.charAt(0);
} else if (type.endsWith("SHORT")) {
result = Short.valueOf(value);
} else if (type.endsWith("BYTE")) {
result = Byte.valueOf(value);
} else if (type.endsWith("BOOLEAN")) {
result = Boolean.valueOf(value);
} else if (type.endsWith("STRING")) {
result = value;
}
} catch (Exception e) {
throw new SQLException(e);
}
} else {
throw new SQLException("Unable to find the type of property [ " + propertyName + " ]");
}
Method setter = desc.getWriteMethod();
if (setter != null) {
propertyFound = true;
debug("invoking setter method [" + setter.getName() + "], value [" + result + "]");
setter.invoke(object, result);
} else {
throw new SQLException
("Unable to find the setter method for property [ " + propertyName + " ]");
}
break;
}
}
if(!propertyFound){
throw new SQLException("No such property ("+propertyName+") in " + clazz.getName());
}
}
}
public void preDestroy() {
debug("predestroy() called");
}
private static void debug(String s) {
if(logger.isLoggable(Level.FINEST)){
logger.finest("[osgi-jdbc] : " + s);
}
}
}
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