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  /*
   * Firebird Open Source J2ee connector - jdbc driver
   *
   * Distributable under LGPL license.
   * You may obtain a copy of the License at http://www.gnu.org/copyleft/lgpl.html
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * LGPL License for more details.
  *
  * This file was created by members of the firebird development team.
  * All individual contributions remain the Copyright (C) of those
  * individuals.  Contributors to this file are either listed here or
  * can be obtained from a CVS history command.
  *
  * All rights reserved.
  */
 package org.firebirdsql.jdbc;
 
 
 import java.sql.*;
 import java.util.*;
 
 
The Jaybird JDBC Driver implementation for the Firebird database.

Author(s):
David Jencks
Version:
1.0
 
 public abstract class AbstractDriver implements FirebirdDriver {
 
     private final static Logger log;
 
     public static final String CHARSET = "charSet";
     public static final String USE_TRANSLATION = "useTranslation";
     public static final String USER = "user";
     public static final String USER_NAME = "user_name";
     public static final String PASSWORD = "password";
     public static final String DATABASE = "database";
     public static final String BLOB_BUFFER_LENGTH = "blob_buffer_length";
     public static final String TPB_MAPPING = "tpb_mapping";
     
     /*
      * @todo implement the default subject for the
      * standard connection.
      */
 
     private Map mcfToDataSourceMap = Collections.synchronizedMap(new WeakHashMap());
 
     static {
          = LoggerFactory.getLogger(AbstractDriver.classfalse);
         try {
             DriverManager.registerDriver(new FBDriver());
         } catch (Exception ex) {
             if ( != null)
                 .error("Could not register with driver manager"ex);
         }
     }

    
Attempts to make a database connection to the given URL. The driver should return "null" if it realizes it is the wrong kind of driver to connect to the given URL. This will be common, as when the JDBC driver manager is asked to connect to a given URL it passes the URL to each loaded driver in turn.

The driver should raise a SQLException if it is the right driver to connect to the given URL, but has trouble connecting to the database.

The java.util.Properties argument can be used to passed arbitrary string tag/value pairs as connection arguments. Normally at least "user" and "password" properties should be included in the Properties.

Parameters:
url the URL of the database to which to connect
originalInfo a list of arbitrary string tag/value pairs as connection arguments. Normally at least a "user" and "password" property should be included.
Returns:
a Connection object that represents a connection to the URL
Throws:
java.sql.SQLException if a database access error occurs
 
     public Connection connect(String urlProperties originalInfothrows SQLException {
         if (url == null) {
             throw new SQLException("url is null");
         }
 
         final GDSType type = GDSFactory.getTypeForProtocol(url);
         
        if (type == null)
            return null;
        try {
            if (originalInfo == null)
                originalInfo = new Properties();
            Map normalizedInfo = FBDriverPropertyManager.normalize(urloriginalInfo);
            
            int qMarkIndex = url.indexOf('?');
            if (qMarkIndex != -1)
                url = url.substring(0, qMarkIndex);
            FBManagedConnectionFactory mcf = new FBManagedConnectionFactory(type);
            
            String databaseURL = GDSFactory.getDatabasePath(typeurl);
            mcf.setDatabase(databaseURL);
            for (Iterator iter = normalizedInfo.entrySet().iterator(); iter.hasNext();) {
                Map.Entry entry = (Map.Entryiter.next();
                
                mcf.setNonStandardProperty((String)entry.getKey(), (String)entry.getValue());
            }
            FBConnectionHelper.processTpbMapping(mcf.getGDS(), mcforiginalInfo);
            
            mcf = mcf.canonicalize();
            FBDataSource dataSource = createDataSource(mcf);
            return dataSource.getConnection(mcf.getUserName(), mcf.getPassword());
            
        } catch(ResourceException resex) {
            throw new FBSQLException(resex);
        } catch(GDSException ex) {
            throw new FBSQLException(ex);
        }
    }
        FBDataSource dataSource = null;
        synchronized () {
            dataSource = (FBDataSource).get(mcf);
            
            if (dataSource == null) {
                dataSource = (FBDataSource)mcf.createConnectionFactory();
                .put(mcfdataSource);
            }
        }
        return dataSource;
    }
    
        GDSType type = GDSType.getType(properties.getType());
        
        if (type == null)
            type = ((AbstractGDS)GDSFactory.getDefaultGDS()).getType();
        try {
            FBManagedConnectionFactory mcf = new FBManagedConnectionFactory(type);
    
            mcf = mcf.canonicalize();
    
            FBDataSource dataSource = createDataSource(mcf);
    
            return (FirebirdConnection)dataSource.getConnection(mcf.getUserName(), mcf.getPassword());
        } catch(ResourceException ex) {
            throw new FBSQLException(ex);
        }
    }
        return new  FBConnectionProperties();
    }

    
Returns true if the driver thinks that it can open a connection to the given URL. Typically drivers will return true if they understand the subprotocol specified in the URL and false if they don't.

Parameters:
url the URL of the database
Returns:
true if this driver can connect to the given URL
Throws:
java.sql.SQLException if a database access error occurs
    public boolean acceptsURL(String urlthrows SQLException {
        if (url == null) {
            throw new SQLException("url is null");
        }
        Set protocols = GDSFactory.getSupportedProtocols();
        
        for (Iterator iter = protocols.iterator(); iter.hasNext();) {
            String protocol = (Stringiter.next();
            if (url.startsWith(protocol))
                return true;
        }
        
        return false;
    }

    
Gets information about the possible properties for this driver.

The getPropertyInfo method is intended to allow a generic GUI tool to discover what properties it should prompt a human for in order to get enough information to connect to a database. Note that depending on the values the human has supplied so far, additional values may become necessary, so it may be necessary to iterate though several calls to getPropertyInfo.

Parameters:
url the URL of the database to which to connect
info a proposed list of tag/value pairs that will be sent on connect open
Returns:
an array of DriverPropertyInfo objects describing possible properties. This array may be an empty array if no properties are required.
Throws:
java.sql.SQLException if a database access error occurs TODO check the correctness of implementation TODO convert parameters into constants
        Properties infothrows  SQLException {
        
        return FBDriverPropertyManager.getDriverPropertyInfo(info);
    }

    
Gets the driver's major version number. Initially this should be 1.

Returns:
this driver's major version number
    public int getMajorVersion() {
        return 2;
    }

    
Gets the driver's minor version number. Initially this should be 0.

Returns:
this driver's minor version number
    public int getMinorVersion() {
        return 2;
    }

    
Reports whether this driver is a genuine JDBC COMPLIANTTM driver. A driver may only report true here if it passes the JDBC compliance tests; otherwise it is required to return false. JDBC compliance requires full support for the JDBC API and full support for SQL 92 Entry Level. It is expected that JDBC compliant drivers will be available for all the major commercial databases. This method is not intended to encourage the development of non-JDBC compliant drivers, but is a recognition of the fact that some vendors are interested in using the JDBC API and framework for lightweight databases that do not support full database functionality, or for special databases such as document information retrieval where a SQL implementation may not be feasible.
    public boolean jdbcCompliant() {
        return true;
    }
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