runtime exceptions

[gmseed]

Hi

I have the following code:

...

            rs   = stmt.executeQuery(selectQuery);

            boolean isClosed = rs.isClosed();

...

and using both sqlite-jdbc-3.7.6.3-20110609.081603-3.jar and sqlite-jdbc-3.7.15-SNAPSHOT-2.jar get the following exception thrown at the call to ResultSet.isClosed():

Exception in thread "main" java.lang.AbstractMethodError: org.sqlite.RS.isClosed()Z

at hedgehog_samples.database.SQLiteDatabase_StoringBytesSample.main(SQLiteDatabase_StoringBytesSample.java:91)

With sqlite-jdbc-3.7.15-SNAPSHOT-2.jar I get the following exception thrown for the call to isNativeMode():

            DatabaseMetaData meta = db_con.getMetaData();

            System.out.println("is-native: " + db.isNativeMode());

Exception in thread "main" java.lang.Error: Unresolved compilation problem: 

Unhandled exception type Exception

at com.hedgehog.database.SQLiteDatabase.isNativeMode(SQLiteDatabase.java:276)

but the call to isNativeMode() is ok for sqlite-jdbc-3.7.6.3-20110609.081603-3.jar.

Graham

[Grace B]

Hey Graham,

What OS and JVM are you using?

[gmseed]

Hi

Win7-64bit and the latest jdk 1.7-u21 and the associated jre.

Graham

[Grace Batumbya]

The call to rs.isClosed() fails because this driver is compiled on Java 5 which does have this method.

With regards to 

With sqlite-jdbc-3.7.15-SNAPSHOT-2.jar I get the following exception thrown for the call to isNativeMode():
            DatabaseMetaData meta = db_con.getMetaData();
            System.out.println("is-native: " + db.isNativeMode());

What is the class for the variable "db".

Graham

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[Peter Borissow]

Hi Grace-

    I understand that 1.5 didn't have the isClosed() method but does that really preclude us from implementing the isClosed() method?

Thanks,

Peter

---

From: Grace Batumbya <grace.b...@gmail.com>
To: xer...@googlegroups.com
Sent: Sunday, May 12, 2013 2:53 PM
Subject: Re: [xerial 705] Re: runtime exceptions

[gmseed]

Hi

My object "db" is an instance of a convenience class and my method isNativeMethod() simply passes on the call to SQLiteJDBCLoader:

    public boolean isNativeMode() throws Exception

    {

        boolean isNative = SQLiteJDBCLoader.isNativeMode();

        return isNative;

    }

I just reran this and it now works fine, so not sure what was happening the other day.

If isClosed() is limited to Java 5 and less then how about something along the lines:

public boolean isClosed() throws SQLException {

boolean closed = false;

if (System.getProperty("java.version").startsWith("1.5.")) {
...
} else{
  throw new SQLException("Method isClosed() is only supported up to and including Java 5.");
}

return closed;

}

Graham

[Grace B]

Graham,

I mean to say that Java 1.5 doesn't have ResultSet.isClose()

Peter,

Rather than going off and making one off changes like this, I would just prefer build the driver on Java 6.

[gmseed]

Hi

OK - I understand. Maybe makes the downloads section a bit more tricky having 5, 6, 7, 8, ... versions than a single .jar as at present. I'd personally present a single download to users.

Graham

[Peter Borissow]

Agreed. 1 download is preferable. I also prefer sticking to a 1.5 build if we can for maximum compatibility.

Grace, why do you think implementing isClosed() depends on >1.5 JDK? Does your compiler complain if you add extra public members to the ResultSet class? I'm not going to push hard for this feature. Just curious...

Thanks,
Peter

---

From: gmseed <gms...@gmail.com>
To: xer...@googlegroups.com
Sent: Monday, May 13, 2013 9:19 AM
Subject: Re: [xerial 710] Re: runtime exceptions

Hi

OK - I understand. Maybe makes the downloads section a bit more tricky having 5, 6, 7, 8, ... versions than a single .jar as at present. I'd personally present a single download to users.

Graham

On Monday, May 13, 2013 2:15:25 PM UTC+1, Grace B wrote:

Graham,

I mean to say that Java 1.5 doesn't have ResultSet.isClose()

Peter,

Rather than going off and making one off changes like this, I would just prefer build the driver on Java 6.

On Monday, May 13, 2013 8:34:12 AM UTC-4, gmseed wrote:

Hi

My object "db" is an instance of a convenience class and my method isNativeMethod() simply passes on the call to SQLiteJDBCLoader:

    public boolean isNativeMode() throws Exception

    {

        boolean isNative = SQLiteJDBCLoader.isNativeMode( );

        return isNative;

    }

I just reran this and it now works fine, so not sure what was happening the other day.

If isClosed() is limited to Java 5 and less then how about something along the lines:

public boolean isClosed() throws SQLException {

boolean closed = false;

if (System.getProperty("java. version").startsWith("1.5.")) {

...
} else{
  throw new SQLException("Method isClosed() is only supported up to and including Java 5.");
}

return closed;

}

Graham

On Sunday, May 12, 2013 7:53:12 PM UTC+1, Grace B wrote:

The call to rs.isClosed() fails because this driver is compiled on Java 5 which does have this method.

With regards to 

With sqlite-jdbc-3.7.15-SNAPSHOT-2. jar I get the following exception thrown for the call to isNativeMode():

            DatabaseMetaData meta = db_con.getMetaData();
            System.out.println("is-native: " + db.isNativeMode());

What is the class for the variable "db".

On Sun, May 12, 2013 at 10:35 AM, gmseed <gms...@gmail.com> wrote:

Hi

Win7-64bit and the latest jdk 1.7-u21 and the associated jre.

Graham

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