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/*
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* HarvesterRegistration.java
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*
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* Created on March 23, 2004, 4:44 PM
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*/
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package edu.ucsb.nceas.metacat.harvesterClient;
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import com.oreilly.servlet.ParameterParser;
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import java.io.File;
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import java.io.InputStream;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.sql.Connection;
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import java.sql.DriverManager;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.sql.SQLWarning;
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import java.sql.Statement;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import java.util.Enumeration;
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import java.util.Properties;
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import javax.servlet.ServletContext;
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import javax.servlet.ServletException;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import javax.servlet.http.HttpSession;
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/**
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* HarvesterRegistration is a servlet that implements harvester registration.
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* The servlet reads parameters that were entered in a harvester registration
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* form, checks the validity of the values, stores the values in the database
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* by either inserting, updating, or removing a record in the
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* HARVEST_SITE_SCHEDULE table.
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*
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* @author costa
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*
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*/
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public class HarvesterRegistration extends HttpServlet {
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/*
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* Object fields
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*/
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final private long millisecondsPerDay = (1000 * 60 * 60 * 24);
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private String password; // database password, from properties file
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private String url; // database url, from properties file
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private String user; // database user, from properties file
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/*
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* Object methods
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*/
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2085
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costa
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/**
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* Checks validity of user input values.
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*
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* @param out the PrintWriter output object
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* @param documentListURL the Harvest Document List URL specified by the user
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* @param updateFrequency the Harvest Frequency specified by the user
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* @return validValues true if all values are valid, else false
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*/
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private boolean checkValues(PrintWriter out,
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String documentListURL,
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int updateFrequency
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) {
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boolean validValues = true;
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2063
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costa
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// Check validity of the Harvest Document List URL field
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if (documentListURL.equals("")) {
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out.println(
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"A value must be specified in the Harvest Document List URL field"
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);
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validValues = false;
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}
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// Check validity of the Harvest Frequency field
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if ((updateFrequency < 1) || (updateFrequency > 99)) {
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out.println("Harvest Frequency should be in the range 1 to 99");
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validValues = false;
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}
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return validValues;
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}
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2063
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costa
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/**
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* Closes the database connection.
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*
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* @param conn The connection.
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*/
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private void closeConnection(Connection conn) {
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try {
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if (conn != null) {
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conn.close();
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}
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}
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catch (SQLException e) {
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// ignored
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}
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}
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/**
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* Inserts a record to the HARVEST_SITE_SCHEDULE table.
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*
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* @param out the PrintWriter output object
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* @param conn the Connection
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* @param siteScheduleID the primary key for the table
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* @param contactEmail contact email address of the site user
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* @param documentListURL the URL of the harvester document list at the site
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* @param ldapDN the site user's LDAP DN
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* @param ldapPwd the site user's LDAP password
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* @param unit the update frequency unit, e.g. "days", "weeks"
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* @param updateFrequency the update frequency, an integer in range 1-99
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*/
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private void dbInsert(PrintWriter out,
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Connection conn,
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int siteScheduleID,
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String contactEmail,
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String documentListURL,
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String ldapDN,
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String ldapPwd,
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String unit,
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int updateFrequency
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) {
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String dateNextHarvest;
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long delta;
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Date dnh; // Date of next harvest
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Date now; // Today's date
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String query;
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Statement stmt;
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long timeNextHarvest;
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SimpleDateFormat writeFormat = new SimpleDateFormat("dd-MMM-yyyy");
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// Calculate the value of delta, the number of milliseconds between the
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// last harvest date and the next harvest date.
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delta = updateFrequency * millisecondsPerDay;
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if (unit.equals("weeks")) {
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delta *= 7;
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}
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else if (unit.equals("months")) {
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delta *= 30;
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}
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now = new Date();
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timeNextHarvest = now.getTime();
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dnh = new Date(timeNextHarvest);
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dateNextHarvest = writeFormat.format(dnh);
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try {
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stmt = conn.createStatement();
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query = "insert into HARVEST_SITE_SCHEDULE " +
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"(SITE_SCHEDULE_ID, CONTACT_EMAIL, DOCUMENTLISTURL, LDAPDN, LDAPPWD, " +
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"UNIT, UPDATEFREQUENCY, DATENEXTHARVEST) " +
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"values(" + siteScheduleID + "," +
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quoteString(contactEmail) + "," +
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quoteString(documentListURL) + "," +
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quoteString(ldapDN) + "," +
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quoteString(ldapPwd) + "," +
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quoteString(unit) + "," +
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updateFrequency + "," +
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quoteString(dateNextHarvest) + ")";
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System.out.println(query);
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stmt.executeUpdate(query);
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stmt.close();
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reportResults(out, ldapDN, contactEmail, documentListURL, updateFrequency,
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unit, dateNextHarvest);
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}
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catch(SQLException e) {
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System.out.println("SQLException: " + e.getMessage());
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}
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}
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/**
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* Removes a record from the HARVEST_SITE_SCHEDULE table.
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*
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* @param out the PrintWriter output object
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* @param conn the Connection
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* @param siteScheduleID the primary key for the table
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* @param ldapDN the site user's LDAP DN
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*/
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private void dbRemove(PrintWriter out,
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Connection conn,
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int siteScheduleID,
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String ldapDN
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) {
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String query = "DELETE FROM HARVEST_SITE_SCHEDULE WHERE " +
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"SITE_SCHEDULE_ID=" + siteScheduleID;
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int nRecords = 0;
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Statement stmt;
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try {
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stmt = conn.createStatement();
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System.out.println(query);
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nRecords = stmt.executeUpdate(query);
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stmt.close();
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System.out.println(nRecords + " record(s) removed.");
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if (nRecords > 0) {
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out.println("Harvester registration removed for user " + ldapDN);
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}
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else {
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out.println("A problem was encountered removing registration for user "
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+ ldapDN);
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}
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}
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catch(SQLException e) {
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System.out.println("SQLException: " + e.getMessage());
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}
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}
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/**
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* Updates a record in the HARVEST_SITE_SCHEDULE table.
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*
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* @param out the PrintWriter output object
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* @param conn the Connection
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* @param siteScheduleID the primary key for the table
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* @param contactEmail contact email address of the site user
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* @param documentListURL the URL of the harvester document list at the site
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* @param ldapDN the site user's LDAP DN
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* @param ldapPwd the site user's LDAP password
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* @param unit the update frequency unit, e.g. "days", "weeks"
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* @param updateFrequency the update frequency, an integer in range 1-99
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* @param dateLastHarvest the date of last harvest,
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* e.g. "2004-04-30 00:00:00.0" or ""
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*/
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private void dbUpdate(PrintWriter out,
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Connection conn,
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int siteScheduleID,
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String contactEmail,
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String documentListURL,
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String ldapDN,
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String ldapPwd,
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String unit,
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int updateFrequency,
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String dateLastHarvest
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) {
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String dateNextHarvest;
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long delta;
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Date dlh; // Date of last harvest
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Date dnh; // Date of next harvest
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Date now = new Date(); // Today's date
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SimpleDateFormat readFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.S");
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SimpleDateFormat writeFormat = new SimpleDateFormat("dd-MMM-yyyy");
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Statement stmt;
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long timeLastHarvest;
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long timeNextHarvest;
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long timeNow = now.getTime();
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// Calculate the value of delta, the number of milliseconds between the
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// last harvest date and the next harvest date.
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delta = updateFrequency * millisecondsPerDay;
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if (unit.equals("weeks")) {
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delta *= 7;
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}
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else if (unit.equals("months")) {
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delta *= 30;
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}
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if (dateLastHarvest.equals("")) {
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timeNextHarvest = timeNow;
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}
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else {
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try {
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dlh = readFormat.parse(dateLastHarvest);
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timeLastHarvest = dlh.getTime();
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timeNextHarvest = timeLastHarvest + delta;
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timeNextHarvest = Math.max(timeNextHarvest, timeNow);
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}
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catch (ParseException e) {
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System.out.println("Error parsing date: " + dateLastHarvest +
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" " + e.getMessage());
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timeNextHarvest = timeNow;
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}
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}
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dnh = new Date(timeNextHarvest);
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dateNextHarvest = writeFormat.format(dnh);
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try {
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stmt = conn.createStatement();
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stmt.executeUpdate("UPDATE HARVEST_SITE_SCHEDULE SET CONTACT_EMAIL=" +
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quoteString(contactEmail) +
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" WHERE SITE_SCHEDULE_ID = " + siteScheduleID);
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stmt.executeUpdate("UPDATE HARVEST_SITE_SCHEDULE SET DOCUMENTLISTURL=" +
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quoteString(documentListURL) +
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" WHERE SITE_SCHEDULE_ID = " + siteScheduleID);
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stmt.executeUpdate("UPDATE HARVEST_SITE_SCHEDULE SET LDAPPWD=" +
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quoteString(ldapPwd) +
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" WHERE SITE_SCHEDULE_ID = " + siteScheduleID);
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stmt.executeUpdate("UPDATE HARVEST_SITE_SCHEDULE SET UNIT=" +
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quoteString(unit) +
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" WHERE SITE_SCHEDULE_ID = " + siteScheduleID);
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stmt.executeUpdate("UPDATE HARVEST_SITE_SCHEDULE SET UPDATEFREQUENCY=" +
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updateFrequency +
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" WHERE SITE_SCHEDULE_ID = " + siteScheduleID);
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stmt.executeUpdate("UPDATE HARVEST_SITE_SCHEDULE SET DATENEXTHARVEST=" +
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quoteString(dateNextHarvest) +
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" WHERE SITE_SCHEDULE_ID = " + siteScheduleID);
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stmt.close();
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reportResults(out, ldapDN, contactEmail, documentListURL, updateFrequency,
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unit, dateNextHarvest);
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}
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313 |
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catch(SQLException e) {
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314 |
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System.out.println("SQLException: " + e.getMessage());
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315 |
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}
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316 |
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|
317 |
|
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}
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318 |
|
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|
319 |
|
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|
320 |
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/**
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321 |
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* Handles GET method requests. Displays the current registration info for
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322 |
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* this user (if any), then allows the user to make changes and register or
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323 |
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* unregister.
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324 |
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*
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325 |
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* @param req the request
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326 |
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* @param res the response
|
327 |
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* @throws ServletException
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328 |
|
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* @throws IOException
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329 |
|
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*/
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330 |
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public void doGet(HttpServletRequest req, HttpServletResponse res)
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331 |
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throws ServletException, IOException {
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332 |
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Connection conn = getConnection();
|
333 |
|
|
String contactEmail = "";
|
334 |
|
|
String documentListURL = "http://";
|
335 |
|
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HttpSession httpSession;
|
336 |
|
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String ldapDN;
|
337 |
|
|
String ldapPwd;
|
338 |
|
|
String query;
|
339 |
|
|
int siteScheduleID;
|
340 |
|
|
Statement stmt;
|
341 |
|
|
String unit = "days";
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342 |
|
|
int updateFrequency = 1;
|
343 |
|
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|
344 |
|
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httpSession = req.getSession(false);
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345 |
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|
346 |
|
|
if (httpSession == null) {
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347 |
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System.out.println("User did not log in.");
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348 |
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return;
|
349 |
|
|
}
|
350 |
|
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|
351 |
|
|
// The user name and password are stored as session attributes by the
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352 |
|
|
// HarvesterRegistrationLogin servlet.
|
353 |
|
|
ldapDN = (String) httpSession.getAttribute("ldapDN");
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354 |
|
|
ldapPwd = (String) httpSession.getAttribute("ldapPwd");
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355 |
|
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356 |
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siteScheduleID = getSiteScheduleID(conn, ldapDN);
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357 |
|
|
|
358 |
|
|
// If the user is already registered, query the existing values and
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359 |
|
|
// initialize the form with them.
|
360 |
|
|
if (siteScheduleID != 0) {
|
361 |
|
|
query = "SELECT * FROM HARVEST_SITE_SCHEDULE WHERE SITE_SCHEDULE_ID=" +
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362 |
|
|
siteScheduleID;
|
363 |
|
|
|
364 |
|
|
try {
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365 |
|
|
stmt = conn.createStatement();
|
366 |
|
|
ResultSet rs = stmt.executeQuery(query);
|
367 |
|
|
|
368 |
|
|
while (rs.next()) {
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369 |
|
|
contactEmail = rs.getString("CONTACT_EMAIL");
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370 |
|
|
documentListURL = rs.getString("DOCUMENTLISTURL");
|
371 |
|
|
updateFrequency = rs.getInt("UPDATEFREQUENCY");
|
372 |
|
|
unit = rs.getString("UNIT");
|
373 |
|
|
}
|
374 |
|
|
|
375 |
|
|
stmt.close();
|
376 |
|
|
}
|
377 |
|
|
catch (SQLException ex) {
|
378 |
|
|
System.out.println("SQLException: " + ex.getMessage());
|
379 |
|
|
}
|
380 |
|
|
}
|
381 |
|
|
|
382 |
|
|
res.setContentType("text/html");
|
383 |
|
|
PrintWriter out = res.getWriter();
|
384 |
|
|
|
385 |
|
|
// Print the registration form
|
386 |
|
|
out.println("<HTML>");
|
387 |
|
|
out.println("<HEAD>");
|
388 |
|
|
out.println("<TITLE>Metacat Harvester Registration</TITLE>");
|
389 |
|
|
out.println("</HEAD>");
|
390 |
|
|
out.println("<BODY>");
|
391 |
|
|
out.println("<H2><B>Metacat Harvester Registration</B></H2>");
|
392 |
|
|
out.println("<FORM METHOD=POST>"); // posts to itself
|
393 |
|
|
out.println("To register or changes values, enter all values ");
|
394 |
|
|
out.println("below and click <B>Register</B>.<BR>");
|
395 |
|
|
out.println("To unregister, simply click <B>Unregister</B>.<BR>");
|
396 |
|
|
out.println("<BR><BR>");
|
397 |
|
|
out.println("<pre>Email address: </pre>");
|
398 |
|
|
out.println("<INPUT TYPE=TEXT NAME=contactEmail VALUE=");
|
399 |
|
|
out.println(contactEmail + ">");
|
400 |
2085
|
costa
|
out.println("<BR><BR>");
|
401 |
2063
|
costa
|
out.println("<pre>Harvest Document List URL: </pre>");
|
402 |
|
|
out.println("<INPUT TYPE=TEXT NAME=documentListURL VALUE=");
|
403 |
|
|
out.println(documentListURL + ">");
|
404 |
2085
|
costa
|
out.println("<BR><BR>");
|
405 |
2063
|
costa
|
out.println("<pre>Harvest Frequency (1-99): </pre>");
|
406 |
|
|
out.println("<INPUT TYPE=TEXT NAME=updateFrequency ");
|
407 |
|
|
out.println("MAXLENGTH=2 SIZE=2 VALUE=");
|
408 |
|
|
out.println(updateFrequency + ">");
|
409 |
2085
|
costa
|
out.println("<BR><BR>");
|
410 |
2063
|
costa
|
out.println("<pre>Unit: </pre>");
|
411 |
|
|
out.println("<INPUT TYPE=RADIO ");
|
412 |
|
|
if (unit.equals("days")) out.println("CHECKED ");
|
413 |
|
|
out.println("NAME=unit VALUE=days>day(s)");
|
414 |
|
|
out.println("<INPUT TYPE=RADIO ");
|
415 |
|
|
if (unit.equals("weeks")) out.println("CHECKED ");
|
416 |
|
|
out.println("NAME=unit VALUE=weeks>week(s)");
|
417 |
|
|
out.println("<INPUT TYPE=RADIO ");
|
418 |
|
|
if (unit.equals("months")) out.println("CHECKED ");
|
419 |
|
|
out.println("NAME=unit VALUE=months>month(s)");
|
420 |
2085
|
costa
|
out.println("<BR><BR><BR>");
|
421 |
2063
|
costa
|
out.println("<INPUT TYPE=SUBMIT NAME=register VALUE=Register>");
|
422 |
|
|
out.println("<INPUT TYPE=SUBMIT NAME=unregister VALUE=Unregister>");
|
423 |
|
|
out.println("</BODY>");
|
424 |
|
|
out.println("</HTML>");
|
425 |
|
|
}
|
426 |
|
|
|
427 |
|
|
|
428 |
|
|
/**
|
429 |
|
|
* Handles POST method requests. Reads values as entered by the user in the
|
430 |
|
|
* harvester registration form and checks them for validity. Then either
|
431 |
|
|
* inserts, updates, or removes a record in the HARVEST_SITE_SCHEDULE table.
|
432 |
|
|
*
|
433 |
|
|
* @param req the request
|
434 |
|
|
* @param res the response
|
435 |
|
|
* @throws ServletException
|
436 |
|
|
* @throws IOException
|
437 |
|
|
*/
|
438 |
|
|
public void doPost(HttpServletRequest req, HttpServletResponse res)
|
439 |
|
|
throws ServletException, IOException {
|
440 |
|
|
Connection conn = getConnection();
|
441 |
|
|
int maxValue;
|
442 |
|
|
boolean remove = false; // if true, remove record
|
443 |
|
|
int siteScheduleID;
|
444 |
|
|
String contactEmail;
|
445 |
|
|
String dateLastHarvest;
|
446 |
|
|
String dateNextHarvest;
|
447 |
|
|
String documentListURL;
|
448 |
|
|
HttpSession httpSession;
|
449 |
|
|
String ldapDN;
|
450 |
|
|
String ldapPwd;
|
451 |
2085
|
costa
|
PrintWriter out;
|
452 |
2063
|
costa
|
ParameterParser parameterParser = new ParameterParser(req);
|
453 |
|
|
String register;
|
454 |
|
|
String unit;
|
455 |
|
|
String unregister;
|
456 |
|
|
int updateFrequency;
|
457 |
2085
|
costa
|
boolean validValues;
|
458 |
2063
|
costa
|
|
459 |
2085
|
costa
|
httpSession = req.getSession(false);
|
460 |
2063
|
costa
|
|
461 |
|
|
if (httpSession == null) {
|
462 |
|
|
System.out.println("User did not log in.");
|
463 |
|
|
return;
|
464 |
|
|
}
|
465 |
|
|
|
466 |
|
|
// The user name and password are stored as session attributes by the
|
467 |
|
|
// HarvesterRegistrationLogin servlet
|
468 |
|
|
ldapDN = (String) httpSession.getAttribute("ldapDN");
|
469 |
|
|
ldapPwd = (String) httpSession.getAttribute("ldapPwd");
|
470 |
|
|
|
471 |
|
|
contactEmail = parameterParser.getStringParameter("contactEmail", "None");
|
472 |
|
|
documentListURL = parameterParser.getStringParameter("documentListURL", "");
|
473 |
|
|
unit = parameterParser.getStringParameter("unit", "days");
|
474 |
|
|
updateFrequency = parameterParser.getIntParameter("updateFrequency", 1);
|
475 |
|
|
register = parameterParser.getStringParameter("register", "");
|
476 |
|
|
unregister = parameterParser.getStringParameter("unregister", "");
|
477 |
|
|
remove = (unregister.equalsIgnoreCase("Unregister"));
|
478 |
|
|
siteScheduleID = getSiteScheduleID(conn, ldapDN);
|
479 |
|
|
dateLastHarvest = getDateLastHarvest(conn, siteScheduleID);
|
480 |
2085
|
costa
|
|
481 |
2063
|
costa
|
res.setContentType("text/plain");
|
482 |
2085
|
costa
|
out = res.getWriter();
|
483 |
2063
|
costa
|
|
484 |
2085
|
costa
|
if (!remove) {
|
485 |
|
|
validValues = checkValues(out, documentListURL, updateFrequency);
|
486 |
|
|
|
487 |
|
|
if (!validValues) {
|
488 |
|
|
return;
|
489 |
|
|
}
|
490 |
|
|
}
|
491 |
|
|
|
492 |
2063
|
costa
|
if (siteScheduleID == 0) {
|
493 |
|
|
if (remove) {
|
494 |
|
|
// The user clicked Unregister, but no existing record was found
|
495 |
|
|
System.out.println("Unable to remove record for user " + ldapDN);
|
496 |
|
|
System.out.println("No matching record found in HARVEST_SITE_SCHEDULE");
|
497 |
|
|
out.println("No record found for user " + ldapDN + ".");
|
498 |
|
|
out.println("Since you were not registered, no action was taken.");
|
499 |
|
|
}
|
500 |
|
|
else {
|
501 |
|
|
maxValue = getMaxValue(conn,
|
502 |
|
|
"HARVEST_SITE_SCHEDULE",
|
503 |
|
|
"SITE_SCHEDULE_ID");
|
504 |
|
|
siteScheduleID = maxValue + 1;
|
505 |
|
|
dbInsert(out, conn, siteScheduleID, contactEmail, documentListURL,
|
506 |
|
|
ldapDN, ldapPwd, unit, updateFrequency);
|
507 |
|
|
}
|
508 |
|
|
}
|
509 |
|
|
else {
|
510 |
|
|
// Either update or remove an existing record
|
511 |
|
|
if (remove) {
|
512 |
|
|
dbRemove(out, conn, siteScheduleID, ldapDN);
|
513 |
|
|
}
|
514 |
|
|
else {
|
515 |
|
|
dbUpdate(out, conn, siteScheduleID, contactEmail, documentListURL,
|
516 |
|
|
ldapDN, ldapPwd, unit, updateFrequency, dateLastHarvest);
|
517 |
|
|
}
|
518 |
|
|
}
|
519 |
|
|
|
520 |
|
|
closeConnection(conn);
|
521 |
|
|
}
|
522 |
|
|
|
523 |
|
|
|
524 |
|
|
/**
|
525 |
|
|
* Gets a database connection.
|
526 |
|
|
*
|
527 |
|
|
* @return conn, the Connection object
|
528 |
|
|
*/
|
529 |
|
|
private Connection getConnection() {
|
530 |
|
|
Connection conn = null;
|
531 |
|
|
SQLWarning warn;
|
532 |
|
|
|
533 |
|
|
// Make the database connection
|
534 |
|
|
try {
|
535 |
|
|
System.out.println("Getting connection to Harvester tables");
|
536 |
|
|
conn = DriverManager.getConnection(url, user, password);
|
537 |
|
|
|
538 |
|
|
// If a SQLWarning object is available, print its warning(s).
|
539 |
|
|
// There may be multiple warnings chained.
|
540 |
|
|
warn = conn.getWarnings();
|
541 |
|
|
|
542 |
|
|
if (warn != null) {
|
543 |
|
|
while (warn != null) {
|
544 |
|
|
System.out.println("SQLState: " + warn.getSQLState());
|
545 |
|
|
System.out.println("Message: " + warn.getMessage());
|
546 |
|
|
System.out.println("Vendor: " + warn.getErrorCode());
|
547 |
|
|
System.out.println("");
|
548 |
|
|
warn = warn.getNextWarning();
|
549 |
|
|
}
|
550 |
|
|
}
|
551 |
|
|
}
|
552 |
|
|
catch (SQLException e) {
|
553 |
|
|
System.out.println("Database access failed " + e);
|
554 |
|
|
}
|
555 |
|
|
|
556 |
|
|
return conn;
|
557 |
|
|
}
|
558 |
|
|
|
559 |
|
|
|
560 |
|
|
/**
|
561 |
|
|
* Gets the date of last harvest value from the HARVEST_SITE_SCHEDULE table,
|
562 |
|
|
* given a siteScheduleID value (the primary key).
|
563 |
|
|
*
|
564 |
|
|
* @param conn the connection
|
565 |
|
|
* @param siteScheduleID the primary key
|
566 |
|
|
* @return dateLastHarvest the string stored in the table, e.g.
|
567 |
|
|
* "2004-04-30 00:00:00.0" or ""
|
568 |
|
|
*/
|
569 |
|
|
private String getDateLastHarvest(Connection conn, int siteScheduleID) {
|
570 |
|
|
String dateLastHarvest = "";
|
571 |
|
|
String query = "SELECT DATELASTHARVEST FROM HARVEST_SITE_SCHEDULE " +
|
572 |
|
|
"WHERE SITE_SCHEDULE_ID=" + siteScheduleID;
|
573 |
|
|
Statement stmt;
|
574 |
|
|
|
575 |
|
|
try {
|
576 |
|
|
stmt = conn.createStatement();
|
577 |
|
|
ResultSet rs = stmt.executeQuery(query);
|
578 |
|
|
|
579 |
|
|
while (rs.next()) {
|
580 |
|
|
dateLastHarvest = rs.getString("DATELASTHARVEST");
|
581 |
|
|
if (rs.wasNull()) {
|
582 |
|
|
dateLastHarvest = ""; // Convert null value to empty string
|
583 |
|
|
}
|
584 |
|
|
}
|
585 |
|
|
|
586 |
|
|
stmt.close();
|
587 |
|
|
}
|
588 |
|
|
catch (SQLException ex) {
|
589 |
|
|
System.out.println("SQLException: " + ex.getMessage());
|
590 |
|
|
}
|
591 |
|
|
|
592 |
|
|
return dateLastHarvest;
|
593 |
|
|
}
|
594 |
|
|
|
595 |
|
|
|
596 |
|
|
/**
|
597 |
|
|
* Gets the maximum value of an integer field from a table, given the table
|
598 |
|
|
* name and the field name.
|
599 |
|
|
*
|
600 |
|
|
* @param tableName the database table name
|
601 |
|
|
* @param fieldName the field name of the integer field in the table
|
602 |
|
|
* @return the maximum integer stored in the fieldName field of tableName
|
603 |
|
|
*/
|
604 |
|
|
private int getMaxValue(Connection conn, String tableName, String fieldName) {
|
605 |
|
|
int maxValue = 0;
|
606 |
|
|
int fieldValue;
|
607 |
|
|
String query = "SELECT " + fieldName + " FROM " + tableName;
|
608 |
|
|
Statement stmt;
|
609 |
|
|
|
610 |
|
|
try {
|
611 |
|
|
stmt = conn.createStatement();
|
612 |
|
|
ResultSet rs = stmt.executeQuery(query);
|
613 |
|
|
|
614 |
|
|
while (rs.next()) {
|
615 |
|
|
fieldValue = rs.getInt(fieldName);
|
616 |
|
|
maxValue = Math.max(maxValue, fieldValue);
|
617 |
|
|
}
|
618 |
|
|
|
619 |
|
|
stmt.close();
|
620 |
|
|
}
|
621 |
|
|
catch (SQLException ex) {
|
622 |
|
|
System.out.println("SQLException: " + ex.getMessage());
|
623 |
|
|
}
|
624 |
|
|
|
625 |
|
|
return maxValue;
|
626 |
|
|
}
|
627 |
|
|
|
628 |
|
|
|
629 |
|
|
/**
|
630 |
|
|
* Gets the siteScheduleID value from the HARVEST_SITE_SCHEDULE table, given
|
631 |
|
|
* the value of the ldapDN field.
|
632 |
|
|
*
|
633 |
|
|
* @param conn the database connection
|
634 |
|
|
* @param ldapDN the ldap DN string
|
635 |
|
|
* @return siteScheduleID, an integer, the primary key
|
636 |
|
|
*/
|
637 |
|
|
private int getSiteScheduleID(Connection conn, String ldapDN) {
|
638 |
|
|
String ldapDNValue; // value of LDAPDN field
|
639 |
|
|
String query = "SELECT * FROM HARVEST_SITE_SCHEDULE";
|
640 |
|
|
int siteScheduleID = 0;
|
641 |
|
|
Statement stmt;
|
642 |
|
|
|
643 |
|
|
try {
|
644 |
|
|
stmt = conn.createStatement();
|
645 |
|
|
ResultSet rs = stmt.executeQuery(query);
|
646 |
|
|
|
647 |
|
|
while (rs.next()) {
|
648 |
|
|
ldapDNValue = rs.getString("LDAPDN");
|
649 |
|
|
|
650 |
|
|
if (ldapDNValue.equalsIgnoreCase(ldapDN)) {
|
651 |
|
|
siteScheduleID = rs.getInt("SITE_SCHEDULE_ID");
|
652 |
|
|
}
|
653 |
|
|
}
|
654 |
|
|
|
655 |
|
|
stmt.close();
|
656 |
|
|
}
|
657 |
|
|
catch (SQLException ex) {
|
658 |
|
|
System.out.println("SQLException: " + ex.getMessage());
|
659 |
|
|
}
|
660 |
|
|
|
661 |
|
|
return siteScheduleID;
|
662 |
|
|
}
|
663 |
|
|
|
664 |
|
|
|
665 |
|
|
/**
|
666 |
|
|
* Initializes the servlet. Reads properties and initializes object fields.
|
667 |
|
|
*
|
668 |
|
|
* @throws ServletException
|
669 |
|
|
*/
|
670 |
|
|
public void init() throws ServletException {
|
671 |
|
|
String dbDriver;
|
672 |
|
|
Properties properties = loadProperties();
|
673 |
|
|
|
674 |
|
|
dbDriver = properties.getProperty("dbDriver");
|
675 |
|
|
password = properties.getProperty("password");
|
676 |
|
|
url = properties.getProperty("url");
|
677 |
|
|
user = properties.getProperty("user");
|
678 |
|
|
|
679 |
|
|
// Load the jdbc driver
|
680 |
|
|
try {
|
681 |
|
|
Class.forName(dbDriver);
|
682 |
|
|
}
|
683 |
|
|
catch (ClassNotFoundException e) {
|
684 |
|
|
System.out.println("Can't load driver " + e);
|
685 |
|
|
}
|
686 |
|
|
}
|
687 |
|
|
|
688 |
|
|
|
689 |
|
|
/**
|
690 |
|
|
* Loads Harvester properties from a configuration file.
|
691 |
|
|
*/
|
692 |
|
|
private Properties loadProperties() {
|
693 |
|
|
InputStream inputStream;
|
694 |
|
|
String path = "/harvester/harvester.properties";
|
695 |
|
|
Properties properties = new Properties();
|
696 |
|
|
ServletContext servletContext = getServletContext();
|
697 |
|
|
|
698 |
|
|
try {
|
699 |
|
|
inputStream = servletContext.getResourceAsStream(path);
|
700 |
|
|
properties.load(inputStream);
|
701 |
|
|
properties.list(System.out);
|
702 |
|
|
}
|
703 |
|
|
catch (IOException e) {
|
704 |
|
|
System.out.println("IOException: " + e.getMessage());
|
705 |
|
|
}
|
706 |
|
|
|
707 |
|
|
return properties;
|
708 |
|
|
}
|
709 |
|
|
|
710 |
|
|
|
711 |
|
|
/**
|
712 |
|
|
* Surrounds a string with single quotes.
|
713 |
|
|
* @param str the original string
|
714 |
|
|
* @return the quoted string
|
715 |
|
|
*/
|
716 |
|
|
private String quoteString(String str) {
|
717 |
|
|
return "'" + str + "'";
|
718 |
|
|
}
|
719 |
|
|
|
720 |
|
|
|
721 |
|
|
/**
|
722 |
|
|
* Reports the results of an insert or update to the client.
|
723 |
|
|
*
|
724 |
|
|
* @param out the PrintWriter
|
725 |
|
|
* @param ldapDN the LDAP DN string
|
726 |
|
|
* @param contactEmail the email address of the site contact
|
727 |
|
|
* @param documentListURL the URL of the harvester document list at the site
|
728 |
|
|
* @param updateFrequency the harvest update frequency
|
729 |
|
|
* @param unit the unit (e.g. "days", "weeks", "months"
|
730 |
|
|
* @param dateNextHarvest the date of the next scheduled harvest
|
731 |
|
|
*/
|
732 |
|
|
private void reportResults(PrintWriter out,
|
733 |
|
|
String ldapDN,
|
734 |
|
|
String contactEmail,
|
735 |
|
|
String documentListURL,
|
736 |
|
|
int updateFrequency,
|
737 |
|
|
String unit,
|
738 |
|
|
String dateNextHarvest
|
739 |
|
|
) {
|
740 |
|
|
out.println("Harvester registration updated for " + ldapDN);
|
741 |
|
|
out.println(" Email Address: " + contactEmail);
|
742 |
|
|
out.println(" Harvest Document List URL: " + documentListURL);
|
743 |
|
|
out.println(" Harvest Frequency: " + updateFrequency);
|
744 |
|
|
out.println(" Unit: " + unit);
|
745 |
|
|
out.println("");
|
746 |
|
|
out.println("Next scheduled harvest date: " + dateNextHarvest);
|
747 |
|
|
}
|
748 |
|
|
|
749 |
|
|
}
|