Navigation on results returned by a query

          I have a few hundreds of rows (retrived from a database) which i need to display
          on a user screen. I want to break this result in to smaller chunks, say 50 each,
          and provide the user with navigation buttons as in "Next 50, Prev 50 etc.). Other
          than writing very complicated JSP routines to do this, are there any better ways
          to implement this under the Weblogic framework.
          I would be eternally grateful to anybody who can provide me with any hints. I'm
          afraid i'm at a dead end on this.
          Thanks.
          

          I am afraid there are no easy way of doing this using WL framework. I would implement
          a Tag Library to implement this iterator pattern. You have to implement a local
          cache which would hold X items to be displyed in the presentaion server. You can
          hold all the data in the stateful session bean. Your local cache is then will
          be updated as needed basis ( when user clicks next/prev button) by making a call
          to the session bean. The JSP tag libray will then display the local cache.
          -Pudur
          "Binu" <[email protected]> wrote:
          >
          >I have a few hundreds of rows (retrived from a database) which i need
          >to display
          >on a user screen. I want to break this result in to smaller chunks, say
          >50 each,
          >and provide the user with navigation buttons as in "Next 50, Prev 50
          >etc.). Other
          >than writing very complicated JSP routines to do this, are there any
          >better ways
          >to implement this under the Weblogic framework.
          >
          >I would be eternally grateful to anybody who can provide me with any
          >hints. I'm
          >afraid i'm at a dead end on this.
          >
          >Thanks.
          >
          

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    776317 wrote:
    Hi frnds,
    I'd like to restrict number of rows returned by my query to some 10 rows. how to do that.When I try doing with the rownum<10 its giving results for a particular dept and that too some 6 rows only...btw I'm grouping my table and includes joins from many a table and am ordering the table results by a column.. How to do this..
    TELL ME HOW MANY ROWS YOU HAVE IN TABLE?
    Because you have only *6 rows* in you column, if you less than 10 rows then it displays only containied/exist rows. nothing much
    select ename,empno from emp where rownum < 10;Thanks

  • Problem with return a ColdFusion query object from a Java class

    Hi!
    I need to return a ColdFusion query object from a Java class
    using a JDBC result set ( java.sql.ResultSet);
    I have tried to pass my JDBC result set in to the constructor
    of the coldfusion.sql.QueryTable class with this code:
    ColdFusion code
    <cfset pra = createObject("java","QueryUtil").init()>
    <cfset newQuery = CreateObject("java",
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    <cfset newQuery.init( pra.getColdFusionQuery () ) >
    My java class execute a query to db and return QueryTable
    Java code (QueryUtil.java)
    import coldfusion.sql.QueryTable; // (CFusion.jar for class
    QueryTable)
    import com.allaire.cfx //(cfx.jar for class Query used from
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    public class QueryUtil
    public static coldfusion.sql.QueryTable
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    return new coldfusion.sql.QueryTable(rs);
    but when i run cfm page and coldfusion server tries to
    execute : "<cfset pra =
    createObject("java","QueryUtil").init()>" this error appears:
    Object Instantiation Exception.
    An exception occurred when instantiating a java object. The
    cause of this exception was that: coldfusion/sql/QueryTable.
    If i try to execute QueryUtil.java with Eclipse all it works.
    Also I have tried to return java.sql.ResultSet directly to
    coldfusion.sql.QueryTable.init () with failure.
    Do you know some other solution?

    ok
    i print all my code
    pratica.java execute a query to db and return a querytable
    java class
    import java.util.*;
    import java.sql.*;
    import coldfusion.sql.*;
    public class Pratica {
    private HashMap my;
    private String URI,LOGIN,PWD,DRIVER;
    private Connection conn=null;
    //funzione init
    //riceve due strutture converite in hashmap
    // globals
    // dbprop
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    my.put("GLOBALS",globals);
    my.put("DBPROP",dbprop);
    URI = "jdbc:sqlserver://it-bra-s0016;databaseName=nmobl";
    LOGIN = "usr_dev";
    PWD = "developer";
    DRIVER = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
    try{
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    MySQL
    Class.forName(DRIVER);
    /* Connessione alla base di dati */
    conn=DriverManager.getConnection(URI,LOGIN,PWD);
    if(conn!=null) System.out.println("Connection Successful!");
    } catch (ClassNotFoundException e) {
    // Could not find the database driver
    System.out.print("\ndriver non trovato "+e.getMessage());
    System.out.flush();
    catch (SQLException e) {
    // Could not connect to the database
    System.out.print("\nConnessione fallita "+e.getMessage());
    System.out.flush();
    //funzione search
    //riceve un hash map con i filtri di ricerca
    public QueryTable search(/*HashMap arg*/) {
    ResultSet rs=null;
    Statement stmt=null;
    QueryTable ret=null;
    String query="SELECT * FROM TAN100pratiche";
    try{
    stmt = conn.createStatement();// Creo lo Statement per
    l'esecuzione della query
    rs=stmt.executeQuery(query);
    // while (rs.next()) {
    // System.out.println(rs.getString("descrizione"));
    catch (Exception e) {
    e.printStackTrace();
    try {
    ret = Pratica.RsToQueryTable(rs);
    } catch (SQLException e) {
    e.printStackTrace();
    this.close();
    return(ret);
    // ret=this.RsToQuery(rs);
    // this.close(); //chiude le connessioni,recordset e
    statament
    //retstruct CF vede HashMap come struct
    //METODO DI TEST
    public HashMap retstruct(){
    return(my);
    //conversione resultset to querytable
    private static QueryTable RsToQueryTable(ResultSet rs)
    throws SQLException{
    return new QueryTable(rs);
    //chiura resultset statament e connessione
    private void close(){
    try{
    conn.close();
    conn=null;
    catch (Exception e) {
    e.printStackTrace();
    coldfusion code
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01
    Transitional//EN">
    <html>
    <head>
    <title>Test JDBC CFML Using CFScript</title>
    </head>
    <body>
    <cftry>
    <cfset glb_map =
    createObject("java","java.util.HashMap")>
    <cfset dbprop_map =
    createObject("java","java.util.HashMap")>
    <cfset glb_map.init(glb)> <!---are passed from
    another page--->
    <cfset dbprop_map.init(glb["DBPROP"])>
    <cfset pra =
    createObject("java","Pratica").init(glb_map,dbprop_map)>
    <cfset ourQuery
    =createObject("java","coldfusion.sql.QueryTable").init(pra.search())>
    <cfcatch>
    <h2>Error - info below</h2>
    <cfdump var="#cfcatch#"><cfabort>
    </cfcatch>
    </cftry>
    <h2>Success - statement dumped below</h2>
    <cfdump var="#ourQuery#">
    </body>
    </html>
    error at line <cfset pra =
    createObject("java","Pratica").init(glb_map,dbprop_map)>
    An exception occurred when instantiating a java object. The
    cause of this exception was that: coldfusion/sql/QueryTable.
    -----------------------------------------------------------------------

  • Result of an SQL query as a Column name of another query

    Hi Friends,
    Can we use a result of a SQL Query as a column name of another table to retrieve data. If so please help me.
    For eg :
    I have a table where is store numbers;
    select col1 from table1 where col1='5';
    and i have another table where .. this value of col is a column name..
    select ( select col1 from table1 where col1='5') from table2;
    Thanks in advance.

    Hi,
    ORAFLEX wrote:
    Hi Friends,
    Can we use a result of a SQL Query as a column name of another table to retrieve data. If so please help me.
    For eg :
    I have a table where is store numbers;
    select col1 from table1 where col1='5';
    and i have another table where .. this value of col is a column name..
    select ( select col1 from table1 where col1='5') from table2;
    Thanks in advance.Do you really mean that?
    select col1 from table1 where col1='5';That query will always return either '5' or nothing. Whatever you're trying to accomplish with that, you can do with an EXISTS query.
    Perhaps you meant to reference two different columns in that query:
    select col1 from table1 where col2='5';In that case, sorry, no, you can't do that without resorting to dynamic SQL.
    If the same column is used throughout the query (but could change every time you run the query), then the dynamic SQL might be pretty easy. In SQL*Plus, for example, you could use substitution variables, defined in another query at run-time.
    If there are only a few possible values that the sub-query could possibly return, and you know what they all are, then you can fake a dynamic query like this:
    SELECT     CASE     ( SELECT  col1
                FROM       table1
                WHERE       col2     = '5'
              WHEN  'BONUS'     THEN  bonus
              WHEN  'COMM'     THEN  comm
              WHEN  'SAL'     THEN  sal
         END     AS col1
    FROM     table2
    ;Sorry to give such a vague answer, but it's the best I can do with the information I have.
    It would help if you posted a little sample data (CREATE TABLE and INSERT statments for both tables), and the results you want to get from that data. If you want to pass a parameter to the query, give the results you want for a couple of different parameters.

  • Message tracking max results returned

    Hi All,
    On message tracking page the predefined max rsults returned value only have 3 options 250, 500 and 1000. May i know how can i increase query setting more than 1000 results return.
    Regards,
    Rock

    Hi Rock,
    You cannot increase the query to more than 1000, but you can change your other parameters.  For example, you could change the date scope until you get down to under 1000 results. 
    You will have to run multiple queries to pull all the data you're looking for, but unless/until they change the maximum results this will give you a workaround.
    Thanks,
    Rachel

  • Emailing results of a SQL Query....

    I am new to Oracle and was wondering if there is a way to create an email task that could be used to email results of a sql query. My query returns emails addresses that meet a specified criteria. I want to use an email task that takes these addresses as variables and sends out an email to the specified email address.
    Anyone provide any help with how I might do this?
    Thanks.

    Hi,
    The odiSqlUnload has a "select" command. Is possible, at your process, work with the "LPAD()" and/or "RPAD()" function to complete the necessary whitespace at each column?
    To the column heading I suggest you use the "union" like: (I put the lpad and rpad fuctions as example...)
    select col1, col2, col3
    from(
    select 1 as internal_order, 'header_col1' as col1, 'header_col2' as col2, 'header_col3' as col3
    from dual
    UNION
    select 2 as internal_order, RPAD(col1, 10, ' ') as col1 , LPAD(col2, 50, ' ') as col2 , col3
    from your_table)
    order by internal_order
    Do you think this will work for you?

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