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// **********************************************************************
//
// Copyright (c) 2001
// ZeroC, Inc.
// Huntsville, AL, USA
//
// All Rights Reserved
//
// **********************************************************************
package Freeze;
class DBEnvironmentI extends Ice.LocalObjectImpl implements DBEnvironment, com.sleepycat.db.DbErrcall
{
public String
getName()
{
// No mutex lock necessary, _name is immutable
return _name;
}
public Ice.Communicator
getCommunicator()
{
// No mutex lock necessary, _communicator is immutable
return _communicator;
}
synchronized public DB
openDB(String name, boolean create)
{
if(_dbEnv == null)
{
DBException ex = new DBException();
ex.message = _errorPrefix + "\"" + _name + "\" has been closed";
throw ex;
}
DB p = (DB)_dbMap.get(name);
if(p != null)
{
return p;
}
com.sleepycat.db.Db db;
try
{
db = new com.sleepycat.db.Db(_dbEnv, 0);
}
catch(com.sleepycat.db.DbException e)
{
DBException ex = new DBException();
ex.initCause(e);
ex.message = _errorPrefix + "Db.Db: " + e.getMessage();
throw ex;
}
try
{
return new DBI(_communicator, this, db, name, create);
}
catch(DBException e)
{
try
{
db.close(0);
}
catch(com.sleepycat.db.DbException ignore)
{
}
throw e;
}
}
public DBTransaction
startTransaction()
{
return new DBTransactionI(_communicator, _dbEnv, _name);
}
synchronized public void
close()
{
if(_dbEnv == null)
{
return;
}
//
// Build a list of values from the iterator. The iterator
// cannot be used directly since closing each database
// modifies the content of the map (hence invalidating the
// iterator).
//
java.util.List dbs = new java.util.ArrayList();
java.util.Iterator p = _dbMap.values().iterator();
while(p.hasNext())
{
dbs.add(p.next());
}
p = dbs.iterator();
while(p.hasNext())
{
DB db = (DB)p.next();
db.close();
}
if(_trace >= 1)
{
_communicator.getLogger().trace("DB", "closing database environment \"" + _name + "\"");
}
try
{
_dbEnv.close(0);
}
catch(com.sleepycat.db.DbException e)
{
_dbEnv = null;
DBException ex = new DBException();
ex.initCause(e);
ex.message = _errorPrefix + "DbEnv.close: " + e.getMessage();
throw ex;
}
_dbEnv = null;
}
synchronized protected void
add(String name, DB db)
{
_dbMap.put(name, db);
}
synchronized protected void
remove(String name)
{
_dbMap.remove(name);
}
synchronized protected void
eraseDB(String name)
{
//
// The database should not be open.
//
assert(_dbMap.get(name) == null);
com.sleepycat.db.Db db;
try
{
db = new com.sleepycat.db.Db(_dbEnv, 0);
}
catch(com.sleepycat.db.DbException e)
{
DBException ex = new DBException();
ex.initCause(e);
ex.message = _errorPrefix + "Db.Db: " + e.getMessage();
throw ex;
}
try
{
//
// Any failure in remove will cause the database to be
// closed.
//
db.remove(name, null, 0);
}
catch(java.io.FileNotFoundException e)
{
DBNotFoundException ex = new DBNotFoundException();
ex.initCause(e);
ex.message = _errorPrefix + "Db.remove: " + e.getMessage();
throw ex;
}
catch(com.sleepycat.db.DbException e)
{
DBException ex = new DBException();
ex.initCause(e);
ex.message = _errorPrefix + "Db.remove: " + e.getMessage();
throw ex;
}
}
DBEnvironmentI(Ice.Communicator communicator, String name)
{
_communicator = communicator;
_name = name;
_errorPrefix = "Freeze::DBEnvironment(\"" + _name + "\"): ";
_trace = getCommunicator().getProperties().getPropertyAsInt("Freeze.Trace.DB");
_dbEnv = new com.sleepycat.db.DbEnv(0);
if(_trace >= 1)
{
_communicator.getLogger().trace("DB", "opening database environment \"" + _name + "\"");
}
try
{
_dbEnv.open(_name,
com.sleepycat.db.Db.DB_CREATE |
com.sleepycat.db.Db.DB_INIT_LOCK |
com.sleepycat.db.Db.DB_INIT_LOG |
com.sleepycat.db.Db.DB_INIT_MPOOL |
com.sleepycat.db.Db.DB_INIT_TXN |
com.sleepycat.db.Db.DB_RECOVER,
0); //TODO: FREEZE_DB_MODE)
}
catch(java.io.FileNotFoundException e)
{
DBNotFoundException ex = new DBNotFoundException();
ex.initCause(e);
ex.message = _errorPrefix + "DbEnv.open: " + e.getMessage();
throw ex;
}
catch(com.sleepycat.db.DbException e)
{
DBException ex = new DBException();
ex.initCause(e);
ex.message = _errorPrefix + "DbEnv.open: " + e.getMessage();
throw ex;
}
_dbEnv.set_errcall(this);
}
//
// com.sleepycat.db.DbErrcall interface implementation.
//
public void
errcall(String errorPrefix, String message)
{
_communicator.getLogger().error("Freeze database error: " + _name + ": " + message);
}
private Ice.Communicator _communicator;
private int _trace = 0;
private com.sleepycat.db.DbEnv _dbEnv;
private String _name;
private String _errorPrefix;
private java.util.HashMap _dbMap = new java.util.HashMap();
}
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