jsp_addressbook/WEB-INF/code/junk/DataQueryBean.java

// DataQueryBean.java
// JavaBean that will generate an SQL query for the collection of data from the
// specified schema. The JDBC connection parameters and SQL strings are loaded
// from property files.

package com.bullseyecomputing.beans;

// import the essentials
import java.io.*;
import java.sql.*;
import java.util.*;

public class DataQueryBean {
  private ClassLoader loader;

  private Connection dbConnection;
  private Statement dbTransaction;
  private String jdbcProperties = "jdbc.properties";

  private String schema;
  private String sqlProperties;
  private String sqlListSelect, sqlDetailSelect;

  private String filter, orderBy, limit;

// Constructor
  public DataQueryBean() throws Exception {

    Properties props = new Properties();

  // Grab our ClassLoader
    loader = this.getClass().getClassLoader();

  // Use the ClassLoader to locate and load the property file.
    try {
      props.load(loader.getResourceAsStream(jdbcProperties));
    }

  // Handle the exception if the file is unavailable
    catch(IOException ioException) {
      ioException.printStackTrace();
    }

  // Get the JDBC parameters
    String jdbcDriver = props.getProperty("jdbcDriver");
    String jdbcURL = props.getProperty("jdbcURL");

  // Get the User parameters
    String jdbcUser = props.getProperty("jdbcUser");
    String jdbcPassword = props.getProperty("jdbcPassword");

  // Create a JDBC connection
    Class.forName(jdbcDriver);
    dbConnection = DriverManager.getConnection(jdbcURL, jdbcUser, jdbcPassword);

  }
// Constructor

// Schema
  public void setSchema(String schema) {
    Properties props = new Properties();

    this.schema = schema;
    sqlProperties = schema + "Query.properties";

  // Load the SQL Properties
    try {
      props.load(loader.getResourceAsStream(sqlProperties));
    }

    catch(IOException ioException) {
      ioException.printStackTrace();
    }

  // Get the SQL strings
    sqlListSelect = props.getProperty("sqlListSelect");
    sqlDetailSelect = props.getProperty("sqlDetailSelect");
  }
// Schema

// Filter
  public void setFilter(String filterString) {
    filter = filterString;
    sqlListSelect += " where " + filter;
  }
  public String getFilter() {
    return filter;
  }
// Filter

// OrderBy
  public void setOrderBy(String orderByString) {
    orderBy = orderByString;
    sqlListSelect += " order by " + orderBy;
  }
  public String getOrderBy() {
    return orderBy;
  }
// OrderBy

// Limit
  public void setLimit(String limit) {
    this.limit = limit;
    sqlListSelect += " limit " + limit;
  }
  public String getLimit() {
    return limit;
  }
// Limit

// getDataList
  public ArrayList getDataList() throws SQLException {
    
    ArrayList dataList = new ArrayList();

    dbTransaction = dbConnection.createStatement();
    ResultSet results = dbTransaction.executeQuery(sqlListSelect);

    while(results.next()) {
      ListDataBean data = new ListDataBean();
    // Set the Bean values
      data.setId(Integer.toString(results.getInt(1)));
      data.setName(results.getString(2));
      data.setStreet(results.getString(3));
      data.setCity(results.getString(4));
      data.setState(results.getString(5));
      data.setZip(results.getString(6));
    // handle empty values
      String plus4 = results.getString(7).trim();
      data.setPlus4(plus4.equals("") ? "&nbsp" : plus4);

      dataList.add(data);
    }
    dbTransaction.close();
    return dataList;
  }
// getDataList

// Finalize
  protected void finalize() {
    try {
      dbConnection.close();
    }

    catch(SQLException sqlException) {
      sqlException.printStackTrace();
    }
  }
// Finalize

}
// class