package com.dbxml.labrador.jdbc;
/*
* The dbXML Labrador Software License, Version 1.0
*
*
* Copyright (c) 2003 The dbXML Group, L.L.C. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by The
* dbXML Group, L.L.C. (http://www.dbxml.com/)."
* Alternately, this acknowledgment may appear in the software
* itself, if and wherever such third-party acknowledgments normally
* appear.
*
* 4. The names "Labrador" and "dbXML Group" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* info@dbxml.com
*
* 5. Products derived from this software may not be called "Labrador",
* nor may "Labrador" appear in their name, without prior written
* permission of The dbXML Group, L.L.C..
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE DBXML GROUP, L.L.C. OR ITS
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* $Id: JDBCResolver.java,v 1.12 2003/10/06 17:36:33 bradford Exp $
*/
import com.dbxml.labrador.Discovery;
import com.dbxml.labrador.ID;
import com.dbxml.labrador.Instance;
import com.dbxml.labrador.Resolver;
import com.dbxml.labrador.configuration.Configuration;
import com.dbxml.labrador.configuration.ConfigurationCallback;
import com.dbxml.labrador.configuration.ConfigurationException;
import com.dbxml.labrador.exceptions.DiscoveryException;
import com.dbxml.labrador.util.SimpleConfigurable;
import java.util.HashMap;
import java.util.Map;
/**
* JDBCResolver can be used to resolve wrappers for JDBC Statements.
* The JDBCInstance class wraps both PreparedStatements and CallableStatements.
*/
public final class JDBCResolver extends SimpleConfigurable implements Resolver {
private static final String CONNECTION = "connection";
private static final String DRIVER = "driver";
private static final String URL = "url";
private static final String USERNAME = "username";
private static final String PASSWORD = "password";
private static final String INSTANCE = "instance";
private static final String PATH = "path";
private Map discoveries = new HashMap();
public JDBCResolver() {
}
public void setConfig(Configuration config) throws ConfigurationException {
super.setConfig(config);
config.processChildren(CONNECTION, new ConfigurationCallback() {
public void process(Configuration cfg) throws ConfigurationException {
String driver = cfg.getAttribute(DRIVER);
if ( driver == null || driver.length() == 0 ) {
System.out.println("The '"+DRIVER+"' attribute is required for '"+CONNECTION+"'");
System.exit(1);
}
String url = cfg.getAttribute(URL);
if ( url == null || url.length() == 0 ) {
System.out.println("The '"+URL+"' attribute is required for '"+CONNECTION+"'");
System.exit(1);
}
String username = cfg.getAttribute(USERNAME);
String password = cfg.getAttribute(PASSWORD);
JDBCConnectionPool pool = null;
try {
Class.forName(driver).newInstance();
if ( username != null )
pool = new JDBCConnectionPool(url, username, password);
else
pool = new JDBCConnectionPool(url);
}
catch ( Exception e ) {
e.printStackTrace(System.err);
System.exit(1);
}
final JDBCConnectionPool connPool = pool;
cfg.processChildren(INSTANCE, new ConfigurationCallback() {
public void process(Configuration cfg) throws ConfigurationException {
String path = cfg.getAttribute(PATH);
JDBCDiscovery discovery = new JDBCDiscovery(connPool);
discovery.setConfig(cfg);
discoveries.put(path, discovery);
}
});
}
});
}
public Discovery getDiscovery(ID id) throws DiscoveryException {
return (Discovery)discoveries.get(id);
}
public boolean isIDValid(ID id) {
return discoveries.containsKey(id);
}
public Instance getInstance(ID id) {
JDBCDiscovery disc = (JDBCDiscovery)discoveries.get(id);
return new JDBCInstance(disc);
}
}