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/**
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* Name: MetaCatUtil.java
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* Purpose: A Class that implements utility methods for a metadata catalog
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* Copyright: 2000 Regents of the University of California and the
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* National Center for Ecological Analysis and Synthesis
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* Authors: Matt Jones
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*
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* Version: '$Id: MetaCatUtil.java 184 2000-06-21 02:57:19Z jones $'
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*/
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package edu.ucsb.nceas.metacat;
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import java.sql.Connection;
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import java.sql.DriverManager;
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import java.sql.SQLException;
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import java.util.PropertyResourceBundle;
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/**
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* A suite of utility classes for the metadata catalog server
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*/
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public class MetaCatUtil {
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private PropertyResourceBundle options = null;
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private static String propertiesFile = "edu.ucsb.nceas.metacat.metacat";
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/**
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* Construct an instance of the utility class
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*/
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public MetaCatUtil() {
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options = (PropertyResourceBundle)
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PropertyResourceBundle.getBundle(propertiesFile);
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}
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/**
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* Utility method to establish a JDBC database connection using connection
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* info from the properties file
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*/
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public Connection openDBConnection()
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throws SQLException, ClassNotFoundException {
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return openDBConnection(getOption("dbDriver"), getOption("defaultDB"),
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getOption("user"), getOption("password"));
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}
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/**
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* Utility method to establish a JDBC database connection
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*
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* @param dbDriver the string representing the database driver
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* @param connection the string representing the database connectin parameters
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* @param user name of the user to use for database connection
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* @param password password for the user to use for database connection
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*/
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public static Connection openDBConnection(String dbDriver, String connection,
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String user, String password)
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throws SQLException, ClassNotFoundException {
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// Load the Oracle JDBC driver
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Class.forName (dbDriver);
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// Connect to the database
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Connection conn = DriverManager.getConnection( connection, user, password);
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return conn;
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}
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/**
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* Utility method to get an option value from the properties file
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*
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* @param option_name the name of the option requested
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*/
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public String getOption(String option_name) {
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// Get the configuration file information
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if (options == null) {
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options = (PropertyResourceBundle)
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PropertyResourceBundle.getBundle(propertiesFile);
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}
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String value = (String)options.handleGetObject(option_name);
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return value;
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}
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}
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