workflowdaoimpl.java~

J2EE & Tomcat books published by hope

/*
 */

package com.sun.j2ee.workflow.user.dao;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import java.util.ArrayList;
import java.util.Iterator;

import javax.sql.DataSource;
import javax.naming.InitialContext;
import javax.naming.Context;
import javax.naming.NamingException;

import com.sun.j2ee.workflow.JNDINames;
import com.sun.j2ee.workflow.user.dao.UserDAO;
import com.sun.j2ee.workflow.util.DatabaseNames;
import com.sun.j2ee.workflow.user.model.UserModel;

import com.sun.j2ee.workflow.user.exceptions.UserDAOSysException;
import com.sun.j2ee.workflow.user.exceptions.UserDAOAppException;
import com.sun.j2ee.workflow.user.exceptions.UserDAODBUpdateException;
import com.sun.j2ee.workflow.user.exceptions.UserDAOFinderException;
import com.sun.j2ee.workflow.user.exceptions.UserDAODupKeyException;

import com.sun.j2ee.workflow.util.Debug;

/**
 * This class calls the simple Datasource from Tomcat to get connection
 * No connection pooling is used.
 */
public class workflowDAOImpl implements UserDAO {

    private transient Connection dbConnection = null;
    private transient DataSource datasource   = null;

    public workflowDAOImpl() throws UserDAOSysException {
        try {
            InitialContext ic = new InitialContext();
            datasource = (DataSource) ic.lookup(JNDINames.WORKFLOW_DATASOURCE);
        } catch (NamingException ne) {
            throw new UserDAOSysException("Naming Exception while looking "
                                             + " up DataSource Connection " +
                                                JNDINames.WORKFLOW_DATASOURCE +
                                                    ": \n" + ne.getMessage());
        }
    }
/*
    public void query{
        
        // load the PoolMan JDBC Driver
        try {
            Class.forName("com.codestudio.sql.PoolMan").newInstance();
        } catch (Exception ex) {
            System.out.println("Could Not Find the PoolMan Driver. " +
                               "Is poolman.jar in your CLASSPATH?");
            System.exit(0);
        }

        // establish a Connection to the last database listed in the 'poolman.props' file
        Connection con = DriverManager.getConnection("jdbc:poolman");

        try {

            Statement s = con.createStatement();
            ResultSet res = s.executeQuery(sql);
            ResultSetMetaData meta = res.getMetaData();

            int cols = meta.getColumnCount();
            while (res.next()) {
                for (int i = 1; i <= cols; i++) {
                    Object val = res.getObject(i);
                    System.out.print("\t" + meta.getColumnLabel(i) + ": ");
                    System.out.print(val == null ? " " : val.toString());
                }
                System.out.print("\n");
            }
        } catch (SQLException sqe) {
        }
        finally {
            // this close method merely returns the Connection to the pool
            // after implicitly closing related resources (Statements and ResultSets)
            con.close();
            System.out.println("SAMPLE: Closed Con");
        }


    }
 */
    public void create(UserModel details) throws UserDAOSysException,
                                UserDAODupKeyException,
                                UserDAODBUpdateException,
                                UserDAOAppException {
        insertuser(details);
    }

    public UserModel load(String id) throws UserDAOSysException,
                              UserDAOFinderException {
        return(selectuser(id));
    }

    public void store(UserModel details) throws UserDAODBUpdateException,
                               UserDAOAppException,
                               UserDAOSysException  {
        updateuser(details);
    }

    public void remove(String id) throws UserDAODBUpdateException,
                                UserDAOSysException {
        deleteuser(id);
    }

    public String findByPrimaryKey(String userId) throws
                                            UserDAOFinderException,
                                            UserDAOSysException {
        if (workflowExists(userId))
            return (userId);
        throw new UserDAOFinderException("primary key not found :"+workflowId);
    }

    private boolean workflowExists (String workflowId) throws UserDAOSysException {
        PreparedStatement stmt = null;
        ResultSet result = null;
        boolean returnValue = false;
        String queryStr ="SELECT userID FROM " +
                    DatabaseNames.user_TABLE
                        + " WHERE workflowid = " + "'" + workflowId.trim() + "'";
        Debug.println("queryString is: "+ queryStr);

        try {
            getDBConnection();
            stmt = createPreparedStatement(dbConnection, queryStr);
            result = stmt.executeQuery();
            if ( !result.next() ) {
                returnValue = false;
            } else {
                workflowId = result.getString(1);
                returnValue = true;
            }
        } catch(SQLException se) {
            throw new UserDAOSysException(
                           "SQLException while checking for an"
                           + " existing workflow - id -> " + workflowId + " :\n" + se);
        } finally {
            closeResultSet(result);
            closeStatement(stmt);
            closeConnection();
        }
        return returnValue;
    }

    private boolean isValidData(String workflowId, ContactInformation info) {
        if ( (workflowId == null) ||
             ( info.getEMail() == null) ||
             (info.getGivenName() == null) || (info.getFamilyName() == null)
             || (info.getAddress().getStreetName1() == null) ||
             (info.getAddress().getCity() == null) ||
             (info.getAddress().getState() == null) ||
             (info.getAddress().getZipCode() == null) ||
             (info.getAddress().getCountry() == null)
             || (info.getTelephone() == null) )
            return (false);
        else
            return (true);
    }

    private void insertuser(UserModel details) throws
                                 UserDAOSysException,
                                 UserDAODupKeyException,
                                 UserDAODBUpdateException,
                                 UserDAOAppException {

        if (!isValidData(details.getworkflowId(), details.getContactInformation()))
            throw new UserDAOAppException("Illegal data values for insert");
        if (workflowExists(details.getworkflowId()))
            throw new UserDAODupKeyException("user exists for "+
                                                details.getworkflowId());

        PreparedStatement stmt = null;
        ContactInformation info = details.getContactInformation();
        String queryStr = "INSERT INTO " + DatabaseNames.user_TABLE +
            "(workflowid,email,firstname,lastname,status,"
            + "addr1,addr2,city,state,zip,country,"
            + "phone)" + "VALUES ("
            + "'" + details.getworkflowId().trim() + "',"
            + "'" + info.getEMail().trim() + "',"
            + "'" + info.getGivenName().trim() + "',"
            + "'" + info.getFamilyName().trim() + "',"
            + "'" + details.getStatus().trim() + "',"
            + "'" + info.getAddress().getStreetName1().trim() +"',";

        if (info.getAddress().getStreetName2() != null)
            queryStr += "'"+info.getAddress().getStreetName2().trim() +"',";
        else
            queryStr += "' ',";

        queryStr +=  "'" + info.getAddress().getCity().trim() + "',"
            + "'" + info.getAddress().getState().trim() + "',"
            + "'" + info.getAddress().getZipCode().trim() + "',"
            + "'" + info.getAddress().getCountry().trim() + "',"
            + "'" + info.getTelephone().trim() + "' )";

        Debug.println("queryString is: "+ queryStr);

        try {
            getDBConnection();
            stmt = createPreparedStatement(dbConnection, queryStr);
            int resultCount = stmt.executeUpdate();

            if ( resultCount != 1 ) {
                throw new UserDAODBUpdateException(
                    "ERROR in user_TABLE INSERT !! resultCount = " +
                                   resultCount);
            }
        } catch(SQLException ae) {
            throw new UserDAOSysException(
                        "SQLException while inserting new " +
                        "user; id = " + details.getworkflowId() + " :\n" + ae);
        } finally {
            closeStatement(stmt);
            closeConnection();
        }