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/*
 * ConnectionFactory.java
 *
 * Created on March 7, 2000, 5:09 PM
 */
 
package com.sun.jdo.api.persistence.support;

import java.lang.String;
import java.io.PrintWriter;
import java.sql.Connection;

/** 
 *
 * @author  Craig Russell
 * @version 0.1
 */
public interface ConnectionFactory {
  
  /**
   * Returns java.sql.Connection
   * @return      connection as java.sql.Connection
   */
  Connection getConnection();

  /**
   * Sets JDBC driver name
   * @param driverName    JDBC driver name
   */
  void setDriverName (String driverName);

  /**
   * Returns JDBC driver name
   * @return      driver name
   */
  String getDriverName ();
  
  /**
   * Sets JDBC connection URL
   * @param URL   connection URL
   */
  void setURL (String URL);

  /**
   * Returns connection URL
   * @return      connection URL
   */
  String getURL ();
  
  /**
   * Sets database user
   * @param userName      database user
   */
  void setUserName (String userName);

  /**
   * Returns database user name
   * @return      current database user name
   */
  String getUserName ();
  
  /**
   * Sets database user password
   * @param password      database user password
   */
  void setPassword (char[] password);
  
  /**
   * Sets minimum number of connections in the connection pool
   * @param minPool       minimum number of connections
   */
  void setMinPool (int minPool);

  /**
   * Returns minimum number of connections in the connection pool
   * @return      connection minPool
   */
  int getMinPool ();
  
  /**
   * Sets maximum number of connections in the connection pool
   * @param maxPool       maximum number of connections
   */
  void setMaxPool (int maxPool);

  /**
   * Returns maximum number of connections in the connection pool
   * @return      connection maxPool
   */
  int getMaxPool ();
  
  /**
   * Sets the amount of time, in milliseconds, between the connection
   * manager's attempts to get a pooled connection.
   * @param msInterval    the interval between attempts to get a database
   *                      connection, in milliseconds.
   *
   */
  void setMsInterval (int msInterval);

  /**
   * Returns the amount of time, in milliseconds, between the connection
   * manager's attempts to get a pooled connection.
   * @return      the length of the interval between tries in milliseconds
   */
  int getMsInterval ();
  
  /**
   * Sets the number of milliseconds to wait for an available connection
   * from the connection pool before throwing an exception
   * @param msWait        number in milliseconds
   */
  void setMsWait (int msWait);

  /**
   * Returns the number of milliseconds to wait for an available connection
   * from the connection pool before throwing an exception
   * @return      number in milliseconds
   */
  int getMsWait ();
  
  /**
   * Sets the LogWriter to which messages should be sent
   * @param logWriter
   */
  void setLogWriter (PrintWriter logWriter);

  /**
   * Returns the LogWriter to which messages should be sent
   * @return      logWriter
   */
  PrintWriter getLogWriter ();
 
  /**
   * Sets the number of seconds to wait for a new connection to be
   * established to the data source
   * @param loginTimeout           wait time in seconds
   */
  void setLoginTimeout (int loginTimeout);

  /**
   * Returns the number of seconds to wait for a new connection to be
   * established to the data source
   * @return      wait time in seconds
   */
  int getLoginTimeout ();

  /**
   * Sets transaction isolation level for all connections of this ConnectionFactory.
   * All validation is done by java.sql.Connection itself, so e.g. while Oracle 
   * will not allow to set solation level to TRANSACTION_REPEATABLE_READ, this method 
   * does not have any explicit restrictions
   * 
   * @param level - one of the java.sql.Connection.TRANSACTION_* isolation values
   */
  void setTransactionIsolation (int level);

  /**
   * Returns current transaction isolation level for connections of this ConnectionFactory.
   * @return      the current transaction isolation mode value as java.sql.Connection.TRANSACTION_*
   */
  int getTransactionIsolation ();
}




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