Mega Code Archive
Check for a SQL Warning Using PreparedStatement
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import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLWarning;
import java.sql.Statement;
public class Main {
public static void main(String[] args) throws Exception {
Connection conn = getConnection();
conn.setAutoCommit(false);
Statement st = conn.createStatement();
st.executeUpdate("create table survey (id int, name VARCHAR(30) );");
String INSERT_RECORD = "insert into survey(id, name) values(?,?)";
PreparedStatement pstmt = conn.prepareStatement(INSERT_RECORD);
pstmt.setInt(1, 1);
pstmt.setString(2, "name");
pstmt.executeUpdate();
// Get warnings on PreparedStatement object
SQLWarning warning = pstmt.getWarnings();
while (warning != null) {
// Process statement warnings...
String message = warning.getMessage();
String sqlState = warning.getSQLState();
int errorCode = warning.getErrorCode();
warning = warning.getNextWarning();
}
ResultSet rs = st.executeQuery("SELECT * FROM survey");
outputResultSet(rs);
rs.close();
st.close();
conn.close();
}
private static void outputResultSet(ResultSet rs) throws Exception {
ResultSetMetaData rsMetaData = rs.getMetaData();
int numberOfColumns = rsMetaData.getColumnCount();
for (int i = 1; i < numberOfColumns + 1; i++) {
String columnName = rsMetaData.getColumnName(i);
System.out.print(columnName + " ");
}
System.out.println();
System.out.println("----------------------");
while (rs.next()) {
for (int i = 1; i < numberOfColumns + 1; i++) {
System.out.print(rs.getString(i) + " ");
}
System.out.println();
}
}
private static Connection getConnection() throws Exception {
Class.forName("org.hsqldb.jdbcDriver");
String url = "jdbc:hsqldb:mem:data/tutorial";
return DriverManager.getConnection(url, "sa", "");
}
}
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