Example usage for java.sql ResultSet beforeFirst

Introduction

In this page you can find the example usage for java.sql ResultSet beforeFirst.

Prototype

void beforeFirst() throws SQLException;

Source Link

Document

Moves the cursor to the front of this ResultSet object, just before the first row.

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    Connection conn = null;//from  w w  w . ja va 2  s  .  c  o  m
    Statement s = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);
    ResultSet r = s.executeQuery("SELECT * FROM employee");
    r.last();
    int count = r.getRow();
    r.beforeFirst();
}

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From source file:UpdateableRs.java

public static void main(String[] args) throws Exception {
    Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
    Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:ORCL", "yourName", "mypwd");
    Statement stmt = conn.createStatement();
    stmt = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);
    ResultSet rs = stmt.executeQuery("SELECT ssn, name, salary FROM EMPLOYEES");
    printRs(rs);/*from w  w w.  j  a v a 2  s .c  o m*/

    rs.beforeFirst();

    while (rs.next()) {
        double newSalary = rs.getDouble("salary") * 1.053;
        rs.updateDouble("salary", newSalary);
        rs.updateRow();
    }
    printRs(rs);
    conn.close();
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
    Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:ORCL", "yourName", "mypwd");
    Statement stmt = conn.createStatement();
    stmt = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);
    ResultSet rs = stmt.executeQuery("SELECT ssn, name, salary FROM EMPLOYEES");
    printRs(rs);//  w  w w.ja va  2s.c o  m

    rs.beforeFirst();

    while (rs.next()) {
        double newSalary = rs.getDouble(3) * 1.053;
        rs.updateDouble("salary", newSalary);
        rs.updateRow();
    }
    printRs(rs);
    conn.close();
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    Statement st = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_READ_ONLY);

    st.executeUpdate("create table survey (id int,name varchar(30));");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");
    st.executeUpdate("insert into survey (id,name ) values (2,null)");
    st.executeUpdate("insert into survey (id,name ) values (3,'Tom')");
    ResultSet rs = st.executeQuery("SELECT * FROM survey");

    // Move cursor to the beginning, before the first row.
    // cursor position is 0.
    rs.beforeFirst();
    rs.next();/*from w ww .  j a va 2 s  . c o m*/
    // Get data at cursor
    String id = rs.getString("id");
    System.out.println(id);

    rs.close();
    st.close();
    conn.close();
}

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From source file:ScrollableRs.java

public static void main(String[] args) throws Exception {
    Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
    String jdbcUrl = "jdbc:oracle:thin:@localhost:1521:ORCL";
    Connection conn = DriverManager.getConnection(jdbcUrl, "yourName", "mypwd");
    Statement stmt = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);
    ResultSet rs = stmt.executeQuery("SELECT ssn, name, salary FROM EMPLOYEES");
    while (rs.next()) {
        printRow(rs);/*from   w w  w  .j  av a  2  s . c  om*/
    }
    rs.afterLast();
    System.out.println("\"After-last-row\" = " + rs.isAfterLast());
    rs.beforeFirst();
    System.out.println("\"Before-first-row\" = " + rs.isBeforeFirst());
    rs.first();
    printRow(rs);
    rs.last();
    printRow(rs);
    rs.previous();
    printRow(rs);

    rs.next();
    printRow(rs);

    rs.absolute(3);
    printRow(rs);

    rs.relative(-2);
    printRow(rs);
    if (conn != null)
        conn.close();
}

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From source file:org.mzd.shap.sql.UpdateFeatureTable.java

/**
 * @param args/*from   w  ww .j  av a 2 s  .c om*/
 */
public static void main(String[] args) throws SQLException {

    BasicDataSource ds = new BasicDataSource();
    ds.setDriverClassName("com.mysql.jdbc.Driver");
    ds.setUrl("jdbc:mysql://localhost/BBay01a");
    ds.setUsername("test");
    ds.setPassword("xeno12");

    Connection conn = ds.getConnection();

    // Get the Sequence ID list.
    PreparedStatement select = null;
    PreparedStatement update = null;
    ResultSet result = null;

    select = conn.prepareStatement("SELECT DISTINCT SEQUENCE_ID FROM Features");
    result = select.executeQuery();
    List<Integer> sequenceIds = new ArrayList<Integer>();
    result.beforeFirst();
    while (result.next()) {
        sequenceIds.add(result.getInt(1));
    }
    result.close();
    select.close();

    // Get the list of Feature IDs for this Sequence ID
    select = conn.prepareStatement("SELECT FEATURE_ID FROM Features WHERE SEQUENCE_ID=? ORDER BY start");

    // Update the idx column for this feature id
    update = conn.prepareStatement("UPDATE Features SET featureOrder=? where FEATURE_ID=?");

    for (Integer seqId : sequenceIds) {
        select.setInt(1, seqId);
        result = select.executeQuery();

        int n = 0;
        result.beforeFirst();
        while (result.next()) {
            int featId = result.getInt(1);
            update.setInt(1, n++);
            update.setInt(2, featId);
            if (update.executeUpdate() != 1) {
                System.out.println("Failed update [" + update.toString() + "]");
                throw new SQLException();
            }
        }
        result.close();
    }

    update.close();
    select.close();

    conn.close();
    ds.close();
}

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From source file:Main.java

public static void main(String[] args) throws SQLException {
    // DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
    Connection conn = DriverManager.getConnection("jdbc:oracle:oci8:@yourDB", "scott", "tiger");

    Statement stmt = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE);

    stmt.setFetchSize(1);/*from   w ww  .java  2 s. c o m*/
    ResultSet rset = stmt.executeQuery("select EMPNO, ENAME, SAL from EMP");
    showProperty(rset);

    while (rset.next()) {
        System.out.println(rset.getInt(1) + " " + rset.getString(2) + " " + rset.getInt(3));
    }
    doSomeChanges(conn);
    // Place the cursor before the first row
    rset.beforeFirst();

    while (rset.next()) {
        System.out.println(rset.getInt(1) + " " + rset.getString(2) + " " + rset.getInt(3));
    }
    rset.close();
    stmt.close();
    cleanup(conn);
    conn.close();
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    Statement st = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_READ_ONLY);

    st.executeUpdate("create table survey (id int,name varchar(30));");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");
    st.executeUpdate("insert into survey (id,name ) values (2,null)");
    st.executeUpdate("insert into survey (id,name ) values (3,'Tom')");
    ResultSet rs = st.executeQuery("SELECT * FROM survey");

    // move to the end of the result set
    rs.last();//from   www .  j  a v  a  2s.  c  o  m

    // get the row number of the last row, which is also the row count
    int rowCount = rs.getRow();
    System.out.println(rowCount);

    // now you may move the cursor to the front of this ResultSet object,
    // just before the first row
    rs.beforeFirst();

    rs.close();
    st.close();
    conn.close();
}

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From source file:InsertRow.java

public static void main(String args[]) {

    String url = "jdbc:mySubprotocol:myDataSource";
    Connection con;/* w  w w.  jav  a  2 s.co  m*/
    Statement stmt;
    String query = "select COF_NAME, PRICE from COFFEES";

    try {

        Class.forName("myDriver.ClassName");

    } catch (java.lang.ClassNotFoundException e) {
        System.err.print("ClassNotFoundException: ");
        System.err.println(e.getMessage());
    }

    try {

        con = DriverManager.getConnection(url, "myLogin", "myPassword");

        stmt = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE);
        ResultSet uprs = stmt.executeQuery("SELECT * FROM COFFEES");

        uprs.moveToInsertRow();

        uprs.updateString("COF_NAME", "Kona");
        uprs.updateInt("SUP_ID", 150);
        uprs.updateFloat("PRICE", 10.99f);
        uprs.updateInt("SALES", 0);
        uprs.updateInt("TOTAL", 0);

        uprs.insertRow();
        uprs.beforeFirst();

        System.out.println("Table COFFEES after insertion:");
        while (uprs.next()) {
            String s = uprs.getString("COF_NAME");
            int sup = uprs.getInt("SUP_ID");
            float f = uprs.getFloat("PRICE");
            int sales = uprs.getInt("SALES");
            int t = uprs.getInt("TOTAL");
            System.out.print(s + "   " + sup + "   " + f + "   ");
            System.out.println(sales + "   " + t);
        }

        uprs.close();
        stmt.close();
        con.close();

    } catch (SQLException ex) {
        System.err.println("SQLException: " + ex.getMessage());
    }
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    String driverName = "com.jnetdirect.jsql.JSQLDriver";
    Class.forName(driverName);/*www . j a va  2 s.co  m*/

    String serverName = "127.0.0.1";
    String portNumber = "1433";
    String mydatabase = serverName + ":" + portNumber;
    String url = "jdbc:JSQLConnect://" + mydatabase;
    String username = "username";
    String password = "password";

    Connection connection = DriverManager.getConnection(url, username, password);
    // Create a scrollable result set
    Statement stmt = connection.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);
    ResultSet resultSet = stmt.executeQuery("SELECT * FROM my_table");

    // Move cursor forward
    while (resultSet.next()) {
        // Get data at cursor
        String s = resultSet.getString(1);
    }

    // Move cursor backward
    while (resultSet.previous()) {
        // Get data at cursor
        String s = resultSet.getString(1);
    }

    // Move cursor to the beginning, before the first row.
    // cursor position is 0.
    resultSet.beforeFirst();
}

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