[JDBC] Jbuilder Question..
Anybody have some sort of fix for jbuilder4 enterprise not displaying the tables in my db.. I'm using postgres 7.1 and the 7.0-1.2 jar file .. Please help .. Thanx Thys de Wet [mailto:[EMAIL PROTECTED]] ---(end of broadcast)--- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/users-lounge/docs/faq.html
[JDBC] AGAIN: still no answer ... peter, or anybody knowledgeable, please ....
dear all, unfortunately the jdbc1 driver can't be compiled. there are several errors popping up when compiling --with-java and also when i try to compile the jdbc interface individually: i already figured out two mistypings in the Statement.java file in src/interfaces/jdbc/org/postgresql/jdbc1/Statement.java 1. in the first line peter wrote 'nackage' instead of 'package' 2. on line 291 peter wrote if (result != null ((org.postgresql.ResultSet)result.reallyResultSet()) instead of if (result != null ((org.postgresql.ResultSet)result).reallyResultSet()) but after correcting these misspellings i still got error messages that i couldn't correct any more with my limited knowledge of java: /prog/ant/bin/ant -buildfile ../../../build.xml -Dmajor=7 -Dminor=1 -Dfullversion=7.1 -Ddef_pgport=5432 Buildfile: ../../../build.xml jar: call: prepare: check_versions: driver: [echo] Configured build for the JDBC1 edition driver. compile: [copy] Copying 4 files to /disk/raid2/SRC/postgresql-7.1/src/interfaces/jdbc/build examples: [javac] Compiling 1 source file to /disk/raid2/SRC/postgresql-7.1/src/interfaces/jdbc/build [javac] /disk/raid2/SRC/postgresql-7.1/src/interfaces/jdbc/example/blobtest.java:189: Class example.Blob not found in type declaration. [javac] Blob b = rs.getBlob(a); [javac] ^ [javac] /disk/raid2/SRC/postgresql-7.1/src/interfaces/jdbc/example/blobtest.java:189: Method getBlob(java.lang.String) not found in interface java.sql.ResultSet. [javac] Blob b = rs.getBlob(a); [javac]^ [javac] 2 errors BUILD FAILED /disk/raid2/SRC/postgresql-7.1/src/interfaces/jdbc/build.xml:120: Compile failed, messages should have been provided. Total time: 2 seconds gmake[3]: *** [all] Error 1 gmake[3]: Leaving directory `/disk/raid2/SRC/postgresql-7.1/src/interfaces/jdbc' gmake[2]: *** [all] Error 2 gmake[2]: Leaving directory `/disk/raid2/SRC/postgresql-7.1/src/interfaces' gmake[1]: *** [all] Error 2 gmake[1]: Leaving directory `/disk/raid2/SRC/postgresql-7.1/src' gmake: *** [all] Error 2 can anybody help me along, or could peter put the jar package of the jdbc1 on his web-site, please. if someone would send me the jar-package by mail, i would be happy also [:-)] thanks for your help, mark rosa ps: btw. i tried this both on redhat-linux7.1 (java version 1.1.8) and irix6.5.9m (java version 3.2 (Sun 1.1.8)) -- - Mark Rosa - Dipl. Arch. ETH Etekt Inc.co-create your home phone: ++41-1-4462-406 www: http://www.etekt.com mobile: ++41-76-390 06 37 fax: ++49-89-244 35 64 08 email: [EMAIL PROTECTED] www: http://www.yourcell.net/rosa - The information transmitted is intended only for the person or entity to which it is addressed and may contain confi- dential and/or privileged material. Any review, retrans- mission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any computer. ---(end of broadcast)--- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
[JDBC] Why?? executeQuery() exception: No results were returned by the query.
Hi there !
Can anyone explain why does executeQuery() throws an exception
No results were returned by the query.
when result set is empty ???
In my opinion (and also e.g. Oracle's JDBC driver's opinion) that this is
just normal and user can check the number of rows (=0) that none was
returned. It's totally different to make a query where something is wrong
in the query itself e.g. non-existant column is used or perhaps in the
database connection!
This is pain in the *ss to test against in one's code for every different
JDBC driver's DIFFERENT return string there available and it's impossible
to do code that works for even unknown drivers. And Postgresql has even
language dependant versions of this !!!
Since Postgresql source code is so nicely publicly available (thank you all
there!) and thus improvements are easily given by anyone I just wonder if
this could be improved, please !!!
- Panu
PS. I know for sure that at least SQL Server throws the following when used
through JDBC-ODBC bridge: No ResultSet was produced.
--
org\postgresql\jdbc2\Statement.java:
...
/**
* Execute a SQL statement that retruns a single ResultSet
*
* @param sql typically a static SQL SELECT statement
* @return a ResulSet that contains the data produced by the query
* @exception SQLException if a database access error occurs
*/
public java.sql.ResultSet executeQuery(String sql) throws SQLException
{
this.execute(sql);
while (result != null
!((org.postgresql.ResultSet)result).reallyResultSet())
result = ((org.postgresql.ResultSet)result).getNext();
if (result == null)
throw new PSQLException(postgresql.stat.noresult);
return result;
}
...
--
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[JDBC] Re: AGAIN: still no answer ... peter, or anybody knowledgeable,please ....
The current CVS sources look wrong to me. It has: if (result != null) ((org.postgresql.ResultSet)result.reallyResultSet()) Shouldn't this be: if (result != null ((org.postgresql.ResultSet)result.reallyResultSet())) Not sure if the extra parens are needed for: if (result != null ((org.postgresql.ResultSet)result).reallyResultSet()) Comments? The extra parenthesis are required (since java.sql.ResultSet doesn't have a method 'reallyResultSet()' which returns an object which can be succesfully cast as a 'org.postgresql.ResultSet), but I think it would be cleaner just to declare 'result' as 'org.postgresql.ResultSet' on line 27, that way none of the messy casts (of which there are 11) would be required.. Michael xxx ---(end of broadcast)--- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/users-lounge/docs/faq.html
[JDBC] JDBC Download.
Can anyone please tell me wehere I can get the jdbc 7.1 jar .. frustration I only seem to find the 7.0-1.2 jars .. /frustration Thanx Thys de Wet ---(end of broadcast)--- TIP 4: Don't 'kill -9' the postmaster
[JDBC] No results exception on insert
Hello, I have some code which is essentially doing the following: Statement stmt; ResultSet rs = stmt.executeQuery(insert into users values ( 'joe', 'blow' )); The values are inserted into the table correctly. I verified this using psql: select * from users. The problem is that the executeQuery throws an Exception. The message is No results were returned by the query: No results were returned by the query. at org.postgresql.jdbc2.Statement.executeQuery(Statement.java, Compiled Code) My driver is org.postgresql.Driver from the jar file jdbc7.0-1.2.jar. I think the port version is 7.1 The platform is FreeBSD 4.2-RELEASE. I am using linux jdk 1.2.2. Can anyone give me any ideas? Thanks, Brian ---(end of broadcast)--- TIP 4: Don't 'kill -9' the postmaster
Re: [JDBC] No results exception on insert
Statement stmt; ResultSet rs = stmt.executeQuery(insert into users values ( 'joe', 'blow' )); The problem is that the executeQuery throws an Exception. The message is No results were returned by the query: Try executeUpdate() for insert, create and delete. Mike ---(end of broadcast)--- TIP 4: Don't 'kill -9' the postmaster
Re: [JDBC] No results exception on insert
[EMAIL PROTECTED] wrote: Hello, I have some code which is essentially doing the following: Statement stmt; ResultSet rs = stmt.executeQuery(insert into users values ( 'joe', 'blow' )); The values are inserted into the table correctly. I verified this using psql: select * from users. The problem is that the executeQuery throws an Exception. The message is No results were returned by the query: No results were returned by the query. at org.postgresql.jdbc2.Statement.executeQuery(Statement.java, Compiled Code) Hi, When you're using INSERT, UPDATE, or DELETE, you should use the executeUpdate() method of JDBC. executeQuery expects results because it assumes a query is being sent. :) HTH, Jeremy ---(end of broadcast)--- TIP 4: Don't 'kill -9' the postmaster
[JDBC] Is DataSource implemented?
Referring back to http://fts.postgresql.org/db/mw/msg.html?mid=82946, I tried to use [org.]postgresql.PostgresqlDataSource but could not find it in /usr/local/pgsql/share/java/postgresql.jar, created today by compiling PostgreSQL 7.1.1 from the sources. When I list postgresql.jar with jar tvf /usr/local/pgsql/share/java/postgresql.jar, it has the other classes that are supposed to be under org.postgresql: 12171 Tue May 08 15:48:50 MDT 2001 org/postgresql/Connection.class 4332 Tue May 08 15:48:50 MDT 2001 org/postgresql/PG_Stream.class 4204 Tue May 08 15:48:50 MDT 2001 org/postgresql/Driver.class 2836 Tue May 08 15:48:50 MDT 2001 org/postgresql/Field.class 2440 Tue May 08 15:48:50 MDT 2001 org/postgresql/ResultSet.class 347 Tue May 08 15:48:52 MDT 2001 org/postgresql/Statement.class but not PostgresqlDataSource. I can see PostgresqlDataSource.java sitting there in src/interfaces/jdbc/org/postgresql, but it's not being compiled and finding its way into the .jar file. I see in postgresql-7.1.1/src/interfaces/jdbc/Implementation this provocative hint: PostgresqlDataSource Exists in the Java2 Enterprise edition driver only and is the enterprise equivalent to Driver What do I need to do to get the DataSource class? Build with some J2EE stuff? -- Larry Mulcahy [EMAIL PROTECTED] PGP public key at: http://pgpkeys.mit.edu:11371/pks/lookup?op=getsearch=0x2C4C5A03 ---(end of broadcast)--- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/users-lounge/docs/faq.html
