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package com.sun.gjc.common;
import java.lang.reflect.Method;
import java.util.*;
import com.sun.gjc.util.MethodExecutor;
import javax.resource.ResourceException;
import com.sun.logging.*;
import java.util.logging.Logger;
import java.util.logging.Level;
import com.sun.enterprise.util.i18n.StringManager;
import org.glassfish.internal.api.Globals;
import org.glassfish.internal.api.ClassLoaderHierarchy;
/**
* Utility class, which would create necessary Datasource object according to the
* specification.
*
* @author Binod P.G
* @version 1.0, 02/07/23
* @see com.sun.gjc.common.DataSourceSpec
* @see com.sun.gjc.util.MethodExcecutor
*/
public class DataSourceObjectBuilder implements java.io.Serializable {
private DataSourceSpec spec;
private Hashtable driverProperties = null;
private MethodExecutor executor = null;
private static Logger _logger;
static {
_logger = LogDomains.getLogger(MethodExecutor.class, LogDomains.RSR_LOGGER);
}
private static boolean jdbc40;
private static boolean jdbc41;
static {
jdbc40 = detectJDBC40();
jdbc41 = detectJDBC41();
}
private boolean debug = false;
private static final StringManager sm = StringManager.getManager(
DataSourceObjectBuilder.class);
/**
* Construct a DataSource Object from the spec.
*
* @param spec <code> DataSourceSpec </code> object.
*/
public DataSourceObjectBuilder(DataSourceSpec spec) {
this.spec = spec;
executor = new MethodExecutor();
}
/**
* Construct the DataSource Object from the spec.
*
* @return Object constructed using the DataSourceSpec.
* @throws <code>ResourceException</code> if the class is not found or some issue in executing
* some method.
*/
public Object constructDataSourceObject() throws ResourceException {
driverProperties = parseDriverProperties(spec, true);
Object dataSourceObject = getDataSourceObject();
Method[] methods = dataSourceObject.getClass().getMethods();
for (int i = 0; i < methods.length; i++) {
String methodName = methods[i].getName();
//Check for driver properties first since some jdbc properties
//may be supported in form of driver properties
if (driverProperties.containsKey(methodName.toUpperCase(Locale.getDefault()))) {
Vector values = (Vector) driverProperties.get(methodName.toUpperCase(Locale.getDefault()));
executor.runMethod(methods[i], dataSourceObject, values);
} else if (methodName.equalsIgnoreCase("setUser")) {
executor.runJavaBeanMethod(spec.getDetail(DataSourceSpec.USERNAME), methods[i], dataSourceObject);
} else if (methodName.equalsIgnoreCase("setPassword")) {
executor.runJavaBeanMethod(spec.getDetail(DataSourceSpec.PASSWORD), methods[i], dataSourceObject);
} else if (methodName.equalsIgnoreCase("setLoginTimeOut")) {
executor.runJavaBeanMethod(spec.getDetail(DataSourceSpec.LOGINTIMEOUT), methods[i], dataSourceObject);
} else if (methodName.equalsIgnoreCase("setLogWriter")) {
executor.runJavaBeanMethod(spec.getDetail(DataSourceSpec.LOGWRITER), methods[i], dataSourceObject);
} else if (methodName.equalsIgnoreCase("setDatabaseName")) {
executor.runJavaBeanMethod(spec.getDetail(DataSourceSpec.DATABASENAME), methods[i], dataSourceObject);
} else if (methodName.equalsIgnoreCase("setDataSourceName")) {
executor.runJavaBeanMethod(spec.getDetail(DataSourceSpec.DATASOURCENAME), methods[i], dataSourceObject);
} else if (methodName.equalsIgnoreCase("setDescription")) {
executor.runJavaBeanMethod(spec.getDetail(DataSourceSpec.DESCRIPTION), methods[i], dataSourceObject);
} else if (methodName.equalsIgnoreCase("setNetworkProtocol")) {
executor.runJavaBeanMethod(spec.getDetail(DataSourceSpec.NETWORKPROTOCOL), methods[i], dataSourceObject);
} else if (methodName.equalsIgnoreCase("setPortNumber")) {
executor.runJavaBeanMethod(spec.getDetail(DataSourceSpec.PORTNUMBER), methods[i], dataSourceObject);
} else if (methodName.equalsIgnoreCase("setRoleName")) {
executor.runJavaBeanMethod(spec.getDetail(DataSourceSpec.ROLENAME), methods[i], dataSourceObject);
} else if (methodName.equalsIgnoreCase("setServerName")) {
executor.runJavaBeanMethod(spec.getDetail(DataSourceSpec.SERVERNAME), methods[i], dataSourceObject);
} else if (methodName.equalsIgnoreCase("setMaxStatements")) {
executor.runJavaBeanMethod(spec.getDetail(DataSourceSpec.MAXSTATEMENTS), methods[i], dataSourceObject);
} else if (methodName.equalsIgnoreCase("setInitialPoolSize")) {
executor.runJavaBeanMethod(spec.getDetail(DataSourceSpec.INITIALPOOLSIZE), methods[i], dataSourceObject);
} else if (methodName.equalsIgnoreCase("setMinPoolSize")) {
executor.runJavaBeanMethod(spec.getDetail(DataSourceSpec.MINPOOLSIZE), methods[i], dataSourceObject);
} else if (methodName.equalsIgnoreCase("setMaxPoolSize")) {
executor.runJavaBeanMethod(spec.getDetail(DataSourceSpec.MAXPOOLSIZE), methods[i], dataSourceObject);
} else if (methodName.equalsIgnoreCase("setMaxIdleTime")) {
executor.runJavaBeanMethod(spec.getDetail(DataSourceSpec.MAXIDLETIME), methods[i], dataSourceObject);
} else if (methodName.equalsIgnoreCase("setPropertyCycle")) {
executor.runJavaBeanMethod(spec.getDetail(DataSourceSpec.PROPERTYCYCLE), methods[i], dataSourceObject);
}
}
return dataSourceObject;
}
/**
* Get the extra driver properties from the DataSourceSpec object and
* parse them to a set of methodName and parameters. Prepare a hashtable
* containing these details and return.
*
* @param spec <code> DataSourceSpec </code> object.
* @return Hashtable containing method names and parameters,
* @throws ResourceException If delimiter is not provided and property string
* is not null.
*/
public Hashtable parseDriverProperties(DataSourceSpec spec, boolean returnUpperCase)
throws ResourceException {
String delim = spec.getDetail(DataSourceSpec.DELIMITER);
String escape = spec.getDetail(DataSourceSpec.ESCAPECHARACTER);
String prop = spec.getDetail(DataSourceSpec.DRIVERPROPERTIES);
if (prop == null || prop.trim().equals("")) {
return new Hashtable();
} else if (delim == null || delim.equals("")) {
String msg = sm.getString("dsob.delim_not_specified");
throw new ResourceException(msg);
}else if( escape == null || escape.equals("")){
String msg = sm.getString("dsob.escape_char_not_specified");
throw new ResourceException(msg);
}
return parseDriverProperties(prop,escape, delim, returnUpperCase);
}
/**
* parse the driver properties and re-generate name value pairs with unescaped values.
* @param values driverProperties
* @param escape escape character
* @param delimiter delimiter
* @return Hashtable
*/
public Hashtable parseDriverProperties(String values, String escape,
String delimiter, boolean returnUpperCase){
Hashtable result = new Hashtable();
String parsedValue = "";
String name = "";
String value = "";
char escapeChar = escape.charAt(0);
char delimiterChar = delimiter.charAt(0);
while (values.length() > 0) {
if (values.charAt(0) == delimiterChar) {
if (values.length() > 1 && values.charAt(1) == delimiterChar) {
if (values.length() > 2 && values.charAt(2) == delimiterChar) {
//Check for first property that does not have a value
//There is no value specified for this property.
//Store the name or it will be lost
if (returnUpperCase) {
name = parsedValue.toUpperCase(Locale.getDefault());
} else {
name = parsedValue;
}
//no value specified for value
parsedValue = "";
}
value = parsedValue;
Vector v = new Vector();
v.add(value);
result.put(name, v);
parsedValue = "";
values = values.substring(2);
} else {
if (returnUpperCase) {
name = parsedValue.toUpperCase(Locale.getDefault());
} else {
name = parsedValue;
}
parsedValue = "";
values = values.substring(1);
}
} else if (values.charAt(0) == escapeChar) {
if (values.charAt(1) == escapeChar) {
parsedValue += values.charAt(1);
} else if (values.charAt(1) == delimiterChar) {
parsedValue += values.charAt(1);
}
values = values.substring(2);
} else if (values.charAt(0) != escapeChar) {
parsedValue += values.charAt(0);
values = values.substring(1);
}
}
return result;
}
/**
* Creates a Datasource object according to the spec.
*
* @return Initial DataSource Object instance.
* @throws <code>ResourceException</code> If class name is wrong or classpath is not set
* properly.
*/
private Object getDataSourceObject() throws ResourceException {
String className = spec.getDetail(DataSourceSpec.CLASSNAME);
try {
ClassLoader cl = Thread.currentThread().getContextClassLoader();
Class dataSourceClass;
try {
dataSourceClass = Class.forName(className, true, cl);
} catch (ClassNotFoundException cnfe) {
// OSGi-ed apps can't see lib dir, so try using CommonClassLoader
cl = Globals.get(ClassLoaderHierarchy.class).getCommonClassLoader();
dataSourceClass = Class.forName(className, true, cl);
}
Object dataSourceObject = dataSourceClass.newInstance();
return dataSourceObject;
} catch (ClassNotFoundException cnfe) {
_logger.log(Level.SEVERE, "jdbc.exc_cnfe_ds", cnfe);
String msg = sm.getString("dsob.class_not_found", className);
throw new ResourceException(msg);
} catch (InstantiationException ce) {
_logger.log(Level.SEVERE, "jdbc.exc_inst", className);
String msg = sm.getString("dsob.error_instantiating", className);
throw new ResourceException(msg);
} catch (IllegalAccessException ce) {
_logger.log(Level.SEVERE, "jdbc.exc_acc_inst", className);
String msg = sm.getString("dsob.access_error", className);
throw new ResourceException(msg);
}
}
public static boolean isJDBC40() {
return jdbc40;
}
public static boolean isJDBC41() {
return jdbc41;
}
/**
* Check whether the jdbc api version is 4.0 or not.
*
* @return boolean
*/
private static boolean detectJDBC40() {
boolean jdbc40 = false;
try {
Class.forName("java.sql.Wrapper");
jdbc40 = true;
} catch (ClassNotFoundException cnfe) {
if(_logger.isLoggable(Level.FINEST)) {
_logger.log(Level.FINEST,
"could not find Wrapper(available in jdbc-40), jdk supports only jdbc-30");
}
}
return jdbc40;
}
/**
* Detect if jdbc api version is 4.1 or not
*
* @return boolean
*/
private static boolean detectJDBC41() {
boolean jdbc41 = false;
try {
Class.forName("java.sql.PseudoColumnUsage");
jdbc41 = true;
} catch (ClassNotFoundException cnfe) {
if(_logger.isLoggable(Level.FINEST)) {
_logger.log(Level.FINEST,
"could not find PseudoColumnUsage(enum available in jdbc-41)," +
" jdk supports jdbc-40 or lesser");
}
}
return jdbc41;
}
}