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https://issues.apache.org/jira/browse/IBATIS-441?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12507702
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Arnaud Lemaitre commented on IBATIS-441:
----------------------------------------
in SqlExecutor
when in moveToNextResultsSafely() method , test on
stmt.getConnection().getMetaData().supportsMultipleResultSets() (added since
IBATIS-269 )
is removed then it works perfectly so it's more a bug regarding MetaData
returned. (Mysql J/Connector issue?)
Tests were done with this plateform :
Server version: 5.0.32-Debian_7etch1-log Debian etch distribution
+ mysql-connector-java-5.0.6-bin.jar (or mysql-connector-java-5.0.5-bin.jar )
Anyway Database MetaData should be retrieved only once
(during iBatis init stage? and probably output as well when debug turned on)
may be a warning should be thrown when Multiple resultSet is said to be not
supported.
Actually i had to removed this test to suit my needs.
> Multiple result sets support broken
> -----------------------------------
>
> Key: IBATIS-441
> URL: https://issues.apache.org/jira/browse/IBATIS-441
> Project: iBatis for Java
> Issue Type: Bug
> Components: SQL Maps
> Affects Versions: 2.3.0
> Environment: Mysql Server version: 5.0.32-Debian_7etch1-log
> mysql-connector-java-5.0.6-bin.jar
> ibatis-2.3.0.677.jar
> Reporter: Arnaud Lemaitre
> Priority: Blocker
>
> the following iBATIS code can not retrieve the 2 expected result sets. plain
> JDBC equivalent is provided and is working properly.
> platform specific note :
> multiple queries (allowMultiQueries=true on JDBC url) is not working for
> Mysql server 4.0.24 (tested). apparently requires higher version > 4.1
> (following tests have been done using Mysql 5.0.32)
> Here is my Code (for test purpose) :
> ...
> List results = null;
> SqlMapClient sqlMap = IbatisUtil.getSqlMapInstance();
> try{
> results = sqlMap.queryForList( "test" );
> }
> catch( SQLException sqle ) {
> throw CoreException.wrap( sqle );
> }
>
> final Logger logger = Logger.getLogger( MyCLass.class );
>
> logger.info ( "results.size() = " + results.size() );
> ...
> mySqlMap.xml :
> <?xml version="1.0" encoding="UTF-8" ?>
> <!DOCTYPE sqlMap PUBLIC "-//ibatis.apache.org//DTD SQL Map 2.0//EN"
> "http://ibatis.apache.org/dtd/sql-map-2.dtd";>
> <sqlMap namespace = "myNamespace">
> <select id = "test" resultClass = "int, int">
> <![CDATA[
> select 1+1; select 2+2
> ]]>
> </select>
> </sqlMap>
> My iBATIS Config :
> ( i've set allowMultiQueries to true, when set to false (default) i've Got
> sql syntax errors...
> <sqlMapConfig>
> <settings
> cacheModelsEnabled = "true"
> enhancementEnabled = "true"
> lazyLoadingEnabled = "true"
> maxRequests = "32"
> maxSessions = "10"
> maxTransactions = "5"
> useStatementNamespaces = "false"/>
> <transactionManager type = "JDBC">
> <dataSource type = "SIMPLE">
> <property name = "JDBC.Driver" value = "com.mysql.jdbc.Driver"/>
> <property name = "JDBC.ConnectionURL" value =
> "jdbc:mysql://dev:3306/myDatabase?autoReconnect=true&allowMultiQueries=true&characterEncoding=UTF-8&characterSetResults=UTF-8"/>
> <property name = "JDBC.Username" value = "myUsername"/>
> <property name = "JDBC.Password" value = " myPassword"/>
> </dataSource>
> </transactionManager>
> <sqlMap resource = "com/x/y/z/mySqlMap.xml"/> </sqlMapConfig>
> Log4j output :
> DEBUG TP-Processor3 java.sql.Connection - {conn-100000} Connection
> DEBUG TP-Processor3 java.sql.Connection - {conn-100000} Preparing Statement:
> select 1+1; select 2+2
> DEBUG TP-Processor3 java.sql.PreparedStatement - {pstm-100001} Executing
> Statement: select 1+1; select 2+2
> DEBUG TP-Processor3 java.sql.PreparedStatement - {pstm-100001} Parameters: []
> DEBUG TP-Processor3 java.sql.PreparedStatement - {pstm-100001} Types: []
> DEBUG TP-Processor3 java.sql.ResultSet - {rset-100002} ResultSet DEBUG
> TP-Processor3 java.sql.ResultSet - {rset-100002} Header: [1+1] DEBUG
> TP-Processor3 java.sql.ResultSet - {rset-100002} Result: [2] DEBUG
> TP-Processor3 com.ibatis.common.jdbc.SimpleDataSource - Returned connection
> 1511627065 to pool.
> INFO TP-Processor3 com.x.y.MyCLass - results.size() = 1
> Here is the test :
> package com.test;
> import java.sql.Connection;
> import java.sql.DriverManager;
> import java.sql.ResultSet;
> import java.sql.Statement;
> public class test {
> public static void main( String[] args ) {
> new test( args );
> }
> public void testJDBCConnection() throws Exception
> {
> Class.forName( "com.mysql.jdbc.Driver" );
>
> String url =
> "jdbc:mysql://myHost:3306/myDatabase?autoReconnect=true&allowMultiQueries=true&characterEncoding=UTF-8&characterSetResults=UTF-8";
>
> Connection conn = DriverManager.getConnection( url,
> "myDatabase", "myPassword" );
>
> try
> {
> String sqlString = "SELECT 1+1; SELECT 2+2; SELECT 3+3";
> System.out.println("Before executing");
>
>
> Statement stmt = conn.createStatement();
> stmt.execute( sqlString );
> for (;;) {
> int updateCount = stmt.getUpdateCount();
> if (updateCount >= 0) {
> // report rows affected...
> }
> else {
> ResultSet rs = stmt.getResultSet();
> if (rs == null)
> break;
> if ( rs.next() )
> System.out.println( "result :"
> + rs.getInt(1) ); // process resultset ....
> }
> stmt.getMoreResults();
> }
>
> System.out.println("After executing");
> }
> catch (Exception e)
> {
> System.out.println("Exception: " + e);
> }
>
> }
> public test( String[] args ) {
> try
> {
> testJDBCConnection();
> }
> catch (Exception e)
> {
> System.out.println("Exception: " + e);
> }
> }
> }
> And the output :
> Before executing
> result :2
> result :4
> result :6
> After executing
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