Example usage for javax.sql RowSetMetaData setColumnCount

Introduction

In this page you can find the example usage for javax.sql RowSetMetaData setColumnCount.

Prototype

void setColumnCount(int columnCount) throws SQLException;

Source Link

Document

Sets the number of columns in the RowSet object to the given number.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getHSQLConnection();
    System.out.println("Got Connection.");
    Statement st = conn.createStatement();
    st.executeUpdate("create table survey (id int,name varchar);");
    st.executeUpdate("create view surveyView as (select * from survey);");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");
    st.executeUpdate("insert into survey (id,name ) values (2,'anotherValue')");

    CachedRowSet crs = null;/*ww  w .j a v  a  2 s .c o  m*/
    RowSetMetaData rsMD = new RowSetMetaDataImpl();
    rsMD.setColumnCount(2);
    rsMD.setColumnName(1, "id");
    rsMD.setColumnType(1, Types.VARCHAR);
    rsMD.setColumnName(2, "name");
    rsMD.setColumnType(2, Types.VARCHAR);
    // sets the designated column's table name, if any, to the given String.
    rsMD.setTableName(1, "survey");
    rsMD.setTableName(2, "survey");

    // use a custom made RowSetMetaData object for CachedRowSet object
    crs = new CachedRowSetImpl();
    crs.setMetaData(rsMD);

    crs.moveToInsertRow();
    crs.updateString(1, "1111");
    crs.updateString(2, "alex");
    crs.insertRow();

    crs.moveToInsertRow();
    crs.updateString(1, "2222");
    crs.updateString(2, "jane");
    crs.insertRow();
    crs.moveToCurrentRow();

    crs.acceptChanges(conn);
    conn.close();
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getHSQLConnection();
    System.out.println("Got Connection.");
    Statement st = conn.createStatement();
    st.executeUpdate("create table survey (id int,name varchar);");
    st.executeUpdate("create view surveyView as (select * from survey);");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");
    st.executeUpdate("insert into survey (id,name ) values (2,'anotherValue')");

    CachedRowSet crs = null;/*from w ww .j  av  a  2s .  c  om*/
    RowSetMetaData rsMD = new RowSetMetaDataImpl();
    rsMD.setColumnCount(2);
    rsMD.setColumnName(1, "id");
    rsMD.setColumnType(1, Types.VARCHAR);
    rsMD.setColumnName(2, "name");
    rsMD.setColumnType(2, Types.VARCHAR);
    // sets the designated column's table name, if any, to the given String.
    rsMD.setTableName(1, "survey");
    rsMD.setTableName(2, "survey");

    // use a custom made RowSetMetaData object for CachedRowSet object
    crs = new CachedRowSetImpl();
    crs.setMetaData(rsMD);

    crs.moveToInsertRow();
    crs.updateString(1, "1111");
    crs.updateString(2, "alex");
    crs.insertRow();

    crs.moveToInsertRow();
    crs.updateString(1, "2222");
    crs.updateString(2, "jane");
    crs.insertRow();

    // if you want to commit changes from a CachedRowSet
    // object to your desired datasource, then you must
    // create a Connection object.
    //
    //conn = getHSQLConnection();

    // moves the cursor to the remembered cursor position, usually
    // the current row. This method has no effect if the cursor is
    // not on the insert row.
    crs.moveToCurrentRow();

    // when the method acceptChanges() is executed, the CachedRowSet
    // object's writer, a RowSetWriterImpl object, is called behind the
    // scenes to write the changes made to the rowset to the underlying
    // data source. The writer is implemented to make a connection to
    // the data source and write updates to it.
    crs.acceptChanges(conn);
    conn.close();
}

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From source file:Main.java

  public void readData(RowSetInternal caller) throws SQLException {
  System.out.println("--- CustomRowSetReader: begin. ---");
  if (caller == null) {
    System.out.println("CustomRowSetReader: caller is null.");
    return;//from   w  w  w  .  j  av a 2s.c om
  }

  CachedRowSet crs = (CachedRowSet) caller;
  // CachedRowSet crs = (CachedRowSet) caller.getOriginal();

  RowSetMetaData rsmd = new RowSetMetaDataImpl();

  rsmd.setColumnCount(3);

  rsmd.setColumnType(1, Types.VARCHAR);
  rsmd.setColumnType(2, Types.INTEGER);
  rsmd.setColumnType(3, Types.VARCHAR);

  rsmd.setColumnName(1, "col1");
  rsmd.setColumnName(2, "col2");
  rsmd.setColumnName(3, "col3");

  crs.setMetaData(rsmd);
  System.out.println("CustomRowSetReader: crs.setMetaData( rsmd );");

  crs.moveToInsertRow();

  crs.updateString(1, "StringCol11");
  crs.updateInt(2, 1);
  crs.updateString(3, "StringCol31");
  crs.insertRow();
  System.out.println("CustomRowSetReader: crs.insertRow() 1");

  crs.updateString(1, "StringCol12");
  crs.updateInt(2, 2);
  crs.updateString(3, "StringCol32");
  crs.insertRow();
  System.out.println("CustomRowSetReader: crs.insertRow() 2");

  crs.moveToCurrentRow();
  crs.beforeFirst();
  displayRowSet(crs);
  crs.beforeFirst();
  // crs.acceptChanges();
  System.out.println("CustomRowSetReader: end.");
}

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