I'm getting a NPE when I try to connect to a database with
securityMechanism=8. This is with Derby 10.3.1.4. I'm setting up the
database by creating it, then running the following script from inside
my app using the org.apache.derby.tools.ij class:
----------
call syscs_util.syscs_set_database_property(
'derby.database.propertiesOnly', 'true');
call syscs_util.syscs_set_database_property(
'derby.authentication.provider', 'BUILTIN');
call syscs_util.syscs_set_database_property(
'derby.connection.requireAuthentication', 'true');
call syscs_util.syscs_set_database_property(
'derby.drda.securityMechanism',
'STRONG_PASSWORD_SUBSTITUTE_SECURITY');
----------
However, when I subsequently close then reopen the database with the
following code I get a NPE:
----------
// Try opening the database.
Properties props = new Properties();
props.put("securityMechanism", "8");
props.put("user", dbUser);
props.put("password", dbPass);
Connection db = null;
try {
StringBuilder sb = new StringBuilder("jdbc:derby:");
sb.append(dbName);
db = DriverManager.getConnection(sb.toString(), props);
}
// Handle exception
}
----------
Stack trace:
----------
java.lang.NullPointerException'. [XJ001]
Caused by: java.sql.SQLException: Java exception: ':
java.lang.NullPointerException'.
at
org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.Util.javaException(Unknown Source)
at
org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(Unknown
Source)
at
org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(Unknown
Source)
at org.apache.derby.impl.jdbc.EmbedConnection.handleException(Unknown
Source)
at org.apache.derby.impl.jdbc.EmbedConnection.<init>(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection30.<init>(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection40.<init>(Unknown Source)
at org.apache.derby.jdbc.Driver40.getNewEmbedConnection(Unknown Source)
at org.apache.derby.jdbc.InternalDriver.connect(Unknown Source)
at org.apache.derby.jdbc.AutoloadedDriver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:154)
at org.opensolaris.auth.db.DBManager.openDatabase(DBManager.java:152)
... 1 more
Caused by: java.sql.SQLException: Java exception: ':
java.lang.NullPointerException'.
at
org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
at
org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(Unknown
Source)
... 16 more
Caused by: java.lang.NullPointerException
at
org.apache.derby.impl.jdbc.authentication.AuthenticationServiceBase.substitutePassword(Unknown
Source)
at
org.apache.derby.impl.jdbc.authentication.BasicAuthenticationServiceImpl.authenticateUser(Unknown
Source)
at
org.apache.derby.impl.jdbc.authentication.AuthenticationServiceBase.authenticate(Unknown
Source)
at
org.apache.derby.impl.jdbc.EmbedConnection.checkUserCredentials(Unknown Source)
... 10 more
----------
Anyone have any suggestions as to where I'm going wrong? If I remove the
props.put("securityMechanism", "8");
the code works fine, but I thought it was necessary to have that if
you'd configured the database to use
STRONG_PASSWORD_SUBSTITUTE_SECURITY? Am I actually setting
STRONG_PASSWORD_SUBSTITUTE_SECURITY correctly in the first place in ij
script?
Thanks,
--
Alan Burlison
--
