public void attemptManageC3P0Registry() {
try {
ObjectName name = new ObjectName(regName);
C3P0RegistryManager mbean = new C3P0RegistryManager();
if (mbs.isRegistered(name)) {
if (logger.isLoggable(MLevel.WARNING)) {
logger.warning(
"A C3P0Registry mbean is already registered. "
+ "This probably means that an application using c3p0 was undeployed, "
+ "but not all PooledDataSources were closed prior to undeployment. "
+ "This may lead to resource leaks over time. Please take care to close "
+ "all PooledDataSources.");
}
mbs.unregisterMBean(name);
}
mbs.registerMBean(mbean, name);
} catch (Exception e) {
if (logger.isLoggable(MLevel.WARNING))
logger.log(
MLevel.WARNING,
"Failed to set up C3P0RegistryManager mBean. "
+ "[c3p0 will still function normally, but management via JMX may not be possible.]",
e);
}
}
// synchronized to protect exposedProxy
public synchronized Connection getConnection() throws SQLException {
if (exposedProxy != null) {
// DEBUG
// System.err.println("[DOUBLE_GET_TESTER] -- double getting a Connection from " + this );
// new Exception("[DOUBLE_GET_TESTER] -- Double-Get Stack Trace").printStackTrace();
// origGet.printStackTrace();
// System.err.println("c3p0 -- Uh oh... getConnection() was called on a PooledConnection
// when " +
// "it had already provided a client with a Connection that has not yet been " +
// "closed. This probably indicates a bug in the connection pool!!!");
logger.warning(
"c3p0 -- Uh oh... getConnection() was called on a PooledConnection when "
+ "it had already provided a client with a Connection that has not yet been "
+ "closed. This probably indicates a bug in the connection pool!!!");
return exposedProxy;
} else {
return getCreateNewConnection();
}
}
public void attemptManagePooledDataSource(PooledDataSource pds) {
String name = null;
try {
name = getPdsObjectNameStr(pds);
ObjectName oname = new ObjectName(name);
if (mbs.isRegistered(oname)) {
if (logger.isLoggable(MLevel.WARNING))
logger.warning(
"You are attempting to register an mbean '"
+ name
+ "', but an mbean by that name is already registered. "
+ "The new mbean will replace the old one in the MBean server. "
+ (EXCLUDE_IDENTITY_TOKEN
? "Since you have excluded the guaranteed-unique identity token, you must take care to give each PooledDataSource a unique dataSourceName."
: "This should not happen unless you have (pathologically) modified the DataSource's guaranteed-unique identityToken."));
}
// PooledDataSourceManager mbean = new PooledDataSourceManager( pds );
// mbs.registerMBean(mbean, ObjectName.getInstance(name));
// if (logger.isLoggable(MLevel.FINER))
// logger.log(MLevel.FINER, "MBean: " + name + " registered.");
// DynamicPooledDataSourceManagerMBean registers itself on construction (and logs its own
// registration)
DynamicPooledDataSourceManagerMBean mbean =
new DynamicPooledDataSourceManagerMBean(pds, name, mbs);
} catch (Exception e) {
if (logger.isLoggable(MLevel.WARNING))
logger.log(
MLevel.WARNING,
"Failed to set up a PooledDataSourceManager mBean. [ "
+ (name == null ? pds.toString() : name)
+ " ] c3p0 will still function normally, but management of this DataSource by JMX may not be possible.",
e);
}
}
public Reference createReference(Object bean) throws NamingException {
try {
BeanInfo bi = Introspector.getBeanInfo(bean.getClass());
PropertyDescriptor[] pds = bi.getPropertyDescriptors();
List refAddrs = new ArrayList();
String factoryClassLocation = defaultFactoryClassLocation;
boolean using_ref_props = referenceProperties.size() > 0;
// we only include this so that on dereference we are not surprised to find some properties
// missing
if (using_ref_props)
refAddrs.add(
new BinaryRefAddr(REF_PROPS_KEY, SerializableUtils.toByteArray(referenceProperties)));
for (int i = 0, len = pds.length; i < len; ++i) {
PropertyDescriptor pd = pds[i];
String propertyName = pd.getName();
// System.err.println("Making Reference: " + propertyName);
if (using_ref_props && !referenceProperties.contains(propertyName)) {
// System.err.println("Not a ref_prop -- continuing.");
continue;
}
Class propertyType = pd.getPropertyType();
Method getter = pd.getReadMethod();
Method setter = pd.getWriteMethod();
if (getter != null
&& setter != null) // only use properties that are both readable and writable
{
Object val = getter.invoke(bean, EMPTY_ARGS);
// System.err.println( "val: " + val );
if (propertyName.equals("factoryClassLocation")) {
if (String.class != propertyType)
throw new NamingException(
this.getClass().getName()
+ " requires a factoryClassLocation property to be a string, "
+ propertyType.getName()
+ " is not valid.");
factoryClassLocation = (String) val;
}
if (val == null) {
RefAddr addMe = new BinaryRefAddr(propertyName, NULL_TOKEN_BYTES);
refAddrs.add(addMe);
} else if (Coerce.canCoerce(propertyType)) {
RefAddr addMe = new StringRefAddr(propertyName, String.valueOf(val));
refAddrs.add(addMe);
} else // other Object properties
{
RefAddr addMe = null;
PropertyEditor pe = BeansUtils.findPropertyEditor(pd);
if (pe != null) {
pe.setValue(val);
String textValue = pe.getAsText();
if (textValue != null) addMe = new StringRefAddr(propertyName, textValue);
}
if (addMe == null) // property editor approach failed
addMe =
new BinaryRefAddr(
propertyName,
SerializableUtils.toByteArray(
val, indirector, IndirectPolicy.INDIRECT_ON_EXCEPTION));
refAddrs.add(addMe);
}
} else {
// System.err.println(this.getClass().getName() +
// ": Skipping " + propertyName + " because it is " + (setter == null ?
// "read-only." : "write-only."));
if (logger.isLoggable(MLevel.WARNING))
logger.warning(
this.getClass().getName()
+ ": Skipping "
+ propertyName
+ " because it is "
+ (setter == null ? "read-only." : "write-only."));
}
}
Reference out =
new Reference(bean.getClass().getName(), factoryClassName, factoryClassLocation);
for (Iterator ii = refAddrs.iterator(); ii.hasNext(); ) out.add((RefAddr) ii.next());
return out;
} catch (Exception e) {
// e.printStackTrace();
if (Debug.DEBUG && logger.isLoggable(MLevel.FINE))
logger.log(MLevel.FINE, "Exception trying to create Reference.", e);
throw new NamingException("Could not create reference from bean: " + e.toString());
}
}
/*
* TODO: factor all this convolution out into
* C3P0Statement
*/
Statement createProxyStatement( // final Method cachedStmtProducingMethod,
// final Object[] cachedStmtProducingMethodArgs,
final boolean inner_is_cached,
final Statement innerStmt)
throws Exception {
final Set activeResultSets = Collections.synchronizedSet(new HashSet());
final Connection parentConnection = exposedProxy;
if (Debug.DEBUG && parentConnection == null) {
// System.err.print("PROBABLE C3P0 BUG -- ");
// System.err.println(this + ": created a proxy Statement when there is no active, exposed
// proxy Connection???");
logger.warning(
"PROBABLE C3P0 BUG -- "
+ this
+ ": created a proxy Statement when there is no active, exposed proxy Connection???");
}
// we can use this one wrapper under all circumstances
// except jdbc3 CallableStatement multiple open ResultSets...
// avoid object allocation in statement methods where possible.
final StatementProxyingSetManagedResultSet mainResultSet =
new StatementProxyingSetManagedResultSet(activeResultSets);
class WrapperStatementHelper {
Statement wrapperStmt;
Statement nakedInner;
public WrapperStatementHelper(Statement wrapperStmt, Statement nakedInner) {
this.wrapperStmt = wrapperStmt;
this.nakedInner = nakedInner;
if (!inner_is_cached) uncachedActiveStatements.add(wrapperStmt);
}
private boolean closeAndRemoveActiveResultSets() {
return closeAndRemoveResultSets(activeResultSets);
}
public ResultSet wrap(ResultSet rs) {
if (mainResultSet.getInner() == null) {
mainResultSet.setInner(rs);
mainResultSet.setProxyStatement(wrapperStmt);
return mainResultSet;
} else {
// for the case of multiple open ResultSets
StatementProxyingSetManagedResultSet out =
new StatementProxyingSetManagedResultSet(activeResultSets);
out.setInner(rs);
out.setProxyStatement(wrapperStmt);
return out;
}
}
public void doClose() throws SQLException {
boolean okay = closeAndRemoveActiveResultSets();
if (inner_is_cached) // this statement was cached
scache.checkinStatement(innerStmt);
else {
innerStmt.close();
uncachedActiveStatements.remove(wrapperStmt);
}
if (!okay) throw new SQLException("Failed to close an orphaned ResultSet properly.");
}
public Object doRawStatementOperation(Method m, Object target, Object[] args)
throws IllegalAccessException, InvocationTargetException, SQLException {
if (target == C3P0ProxyStatement.RAW_STATEMENT) target = nakedInner;
for (int i = 0, len = args.length; i < len; ++i)
if (args[i] == C3P0ProxyStatement.RAW_STATEMENT) args[i] = nakedInner;
Object out = m.invoke(target, args);
if (out instanceof ResultSet) out = wrap((ResultSet) out);
return out;
}
}
if (innerStmt instanceof CallableStatement) {
class ProxyCallableStatement extends FilterCallableStatement implements C3P0ProxyStatement {
WrapperStatementHelper wsh;
ProxyCallableStatement(CallableStatement is) {
super(is);
this.wsh = new WrapperStatementHelper(this, is);
}
public Connection getConnection() {
return parentConnection;
}
public ResultSet getResultSet() throws SQLException {
return wsh.wrap(super.getResultSet());
}
public ResultSet getGeneratedKeys() throws SQLException {
return wsh.wrap(super.getGeneratedKeys());
}
public ResultSet executeQuery(String sql) throws SQLException {
return wsh.wrap(super.executeQuery(sql));
}
public ResultSet executeQuery() throws SQLException {
return wsh.wrap(super.executeQuery());
}
public Object rawStatementOperation(Method m, Object target, Object[] args)
throws IllegalAccessException, InvocationTargetException, SQLException {
return wsh.doRawStatementOperation(m, target, args);
}
public void close() throws SQLException {
wsh.doClose();
}
}
return new ProxyCallableStatement((CallableStatement) innerStmt);
} else if (innerStmt instanceof PreparedStatement) {
class ProxyPreparedStatement extends FilterPreparedStatement implements C3P0ProxyStatement {
WrapperStatementHelper wsh;
ProxyPreparedStatement(PreparedStatement ps) {
super(ps);
this.wsh = new WrapperStatementHelper(this, ps);
}
public Connection getConnection() {
return parentConnection;
}
public ResultSet getResultSet() throws SQLException {
return wsh.wrap(super.getResultSet());
}
public ResultSet getGeneratedKeys() throws SQLException {
return wsh.wrap(super.getGeneratedKeys());
}
public ResultSet executeQuery(String sql) throws SQLException {
return wsh.wrap(super.executeQuery(sql));
}
public ResultSet executeQuery() throws SQLException {
return wsh.wrap(super.executeQuery());
}
public Object rawStatementOperation(Method m, Object target, Object[] args)
throws IllegalAccessException, InvocationTargetException, SQLException {
return wsh.doRawStatementOperation(m, target, args);
}
public void close() throws SQLException {
wsh.doClose();
}
}
return new ProxyPreparedStatement((PreparedStatement) innerStmt);
} else {
class ProxyStatement extends FilterStatement implements C3P0ProxyStatement {
WrapperStatementHelper wsh;
ProxyStatement(Statement s) {
super(s);
this.wsh = new WrapperStatementHelper(this, s);
}
public Connection getConnection() {
return parentConnection;
}
public ResultSet getResultSet() throws SQLException {
return wsh.wrap(super.getResultSet());
}
public ResultSet getGeneratedKeys() throws SQLException {
return wsh.wrap(super.getGeneratedKeys());
}
public ResultSet executeQuery(String sql) throws SQLException {
return wsh.wrap(super.executeQuery(sql));
}
public Object rawStatementOperation(Method m, Object target, Object[] args)
throws IllegalAccessException, InvocationTargetException, SQLException {
return wsh.doRawStatementOperation(m, target, args);
}
public void close() throws SQLException {
wsh.doClose();
}
}
return new ProxyStatement(innerStmt);
}
}