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/**
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* Copyright (C) 2009 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.io.common;
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/*
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* Created on 14.05.2005
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* @author Andreas Müller
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* Updated 20.08.2006
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*/
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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.Statement;
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import org.apache.http.MethodNotSupportedException;
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import org.apache.log4j.Logger;
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import eu.etaxonomy.cdm.database.ICdmDataSource;
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import eu.etaxonomy.cdm.database.update.DatabaseTypeNotSupportedException;
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/**
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*
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* Creates Cursors from extern relational DB.
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* Used only for developpers convienence hence undocumented.
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* You may create input cursors in any other way you want
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* @author Andreas Müller
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*/
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public class Source {
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static Logger logger = Logger.getLogger(Source.class);
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/* ************ Constants **************************************/
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//Mode
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private final static boolean DEBUG_MODE = false;
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private final static boolean DEBUG_LOG_WRITER = false;
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//DB info
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// public final static String SQL_SERVER_2000 = "SQLServer2000";
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public final static String SQL_SERVER_2005 = "SQLServer2005";
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public final static String SQL_SERVER_2008 = "SQLServer2008";
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public final static String ACCESS = "Access";
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public final static String EXCEL = "Excel";
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public final static String ODDBC = "ODBC";
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public final static String ORACLE = "Oracle";
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public final static String DB2 = "DB2";
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public final static String POSTGRESQL9 = "PostgreSQL9";
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public final static String MYSQL = "MySQL";
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//coursor mode
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public final static String SELECT_DIRECT = "direct";
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public final static String SELECT_CURSOR = "cursor";
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//driver class
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// private static String clsSQLServer2000 = "com.microsoft.jdbc.sqlserver.SQLServerDriver";
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private static String clsSQLServer2005 = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
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private static String clsSQLServer2008 = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
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private static String clsODBC = "sun.jdbc.odbc.JdbcOdbcDriver";
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private static String clsOracle = "oracle.jdbc.driver.OracleDriver";
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private static String clsDB2 = "COM.ibm.db2.jdbc.net.DB2Driver";
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private static String clsSQLServerDdtek = "com.ddtek.jdbc.sqlserver.SQLServerDriver";
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private static String clsDefault = "com.microsoft.jdbc.sqlserver.SQLServerDriver";
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private static String clsPostgreSQL = "org.postgresql.Driver";
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private static String clsMySQL = "com.mysql.cj.jdbc.Driver";
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//url
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// private static String urlSQLServer = "jdbc:microsoft:sqlserver://";
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private static String urlSQLServer2005 = "jdbc:sqlserver://";
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private static String urlSQLServer2008 = "jdbc:sqlserver://";
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private static String urlDB2 = "jdbc:db2://";
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private static String urlOracle = "jdbc:oracle:thin:@:1243:";
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private static String urlDataDirectSQLServer = "jdbc:datadirect:sqlserver://";
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private static String urlODBC = "jdbc:odbc:";
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private static String urlPostgreSQL = "jdbc:postgresql://";
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private static String urlMySQL = "jdbc:mysql://";
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/* *************** VARIABLES *******************************/
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private Connection mConn;
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private Statement mStmt;
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private String mQuery;
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private String mUrl = null;
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private String mDb = null;
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private int mPort = 1433; //default port TODO 2 currently only for SQLServer, needs to be implemented also for othe DBMS
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private String mDbms = null;
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private String mServer = null;
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private boolean isCursor;
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private boolean connExist = false; //does a Connection exist?
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private String mUserName;
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private String mPwd;
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private boolean doLog = false;
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private static String userNameDefault = "sa"; //default user
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private static String pwdDefault = "sa"; //default PWD
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/* ******************** CONSTRUCTORS **********************************/
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/**
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* Creates a source and sets the according variables
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* @param dbms name of database management system (e.g. "SQLServer", "Access", "Excel", "Oracle"
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* @param server name of server, if dbms is ODBC, this must be the ODBC name
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* @param db name of database
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*/
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public Source(String dbms, String server, String db){
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mDbms = dbms;
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mServer = server;
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mDb = db;
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this.mPwd = pwdDefault;
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this.mUserName = userNameDefault;
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}
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/**
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* Creates a source and sets the query string
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* @param dbms name of database management system (e.g. "SQLServer", "Access", "Excel", "Oracle"
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* @param server name of server, if dbms is ODBC, this must be the ODBC name
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* @param db name of database
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* @param query the query
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*/
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public Source(String dbms, String server, String db, String query){
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this(dbms, server, db);
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this.setQuery(query);
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}
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/**
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* Creates a source and sets the parameter.
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* @param cursor access mode, if true 'cursor', if false 'direct'
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*/
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public Source(String dbms, String server, String db, boolean cursor) {
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this(dbms, server, db);
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isCursor = cursor;
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}
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/**
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* Creates a source and sets the parameter. If port is -1 the databases default port is used.
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* @param dbms name of database management system (e.g. "SQLServer", "Access", "Excel", "Oracle"
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* @param server name of server, if dbms is ODBC, this must be the ODBC name
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* @param db name of database
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* @param port the databases port (-1: use default port)
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*/
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public Source(String dbms, String server, String db, int port) {
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this(dbms, server, db);
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if (port != -1){
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this.setPort(port);
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};
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}
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/**
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* Creates a source with parameters of a ICdmDataSource instance
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*
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* @param cdmDataSource
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*/
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public Source(ICdmDataSource cdmDataSource){
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mDbms = cdmDataSource.getDatabaseType().getName();
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mServer = cdmDataSource.getServer();
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mDb = cdmDataSource.getDatabase();
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mPwd = cdmDataSource.getPassword();
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mUserName = cdmDataSource.getUsername();
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this.setPort(cdmDataSource.getPort());
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}
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//********************* METHODS *****************************************************/
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//******* RESULTSETS *******************//
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/**
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* Returns the Resultset for query 'query'.
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* Does not change the Sources query-string!!
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* @return Resultset for the query.
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*/
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public ResultSet getResultSet (String query){
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ResultSet rs;
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try {
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this.getConnection(); //establish connection
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if (query == null){
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return null;
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}
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mStmt = mConn.createStatement();
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rs = mStmt.executeQuery(query);
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return rs;
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}catch(Exception e){
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logger.error("Problems when creating Resultset for query \n " + query + " \n" + "Exception: " + e);
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throw new RuntimeException(e);
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}
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}
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//******* INSERT, UPDATE, DELETE *******************//
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/**
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* Executes an insert, update or delete statement.
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* Returns the number of rows changed or -1 if updatedStatement was 0 or and error occurred.
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* Does not change the Sources query-string!!
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* @return Resultset for the query.
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*/
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public int update (String updateStatement){
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int result;
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try {
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this.getConnection(); //establish connection
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if (updateStatement == null){
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return -1;
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}
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mStmt = mConn.createStatement();
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result = mStmt.executeUpdate(updateStatement);
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return result;
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}catch(SQLException e){
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logger.error("Problems when creating Resultset for query \n " + updateStatement + " \n" + "Exception: " + e);
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return -1;
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}
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}
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/**
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* Returns the Resultset for Sources query.
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* @return Resultset for the Sources query
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*/
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public ResultSet getResultSet (){
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return getResultSet(mQuery);
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}
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// ***************CONNECTION *************************************//
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/**
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* Returns the connection.
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* @return the Sources connection
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*/
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public Connection getConnection(){
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try {
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if (this.connExist == false){
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if (mConn != null){
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mConn.close();
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}
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this.makeConnection() ;
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}
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return this.mConn;
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} catch (SourceConnectionException e) {
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throw new RuntimeException("Error when establishing Connection.", e);
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} catch (SQLException e) {
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throw new RuntimeException("SQLException in getConnection.", e);
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}
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}
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/**
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* Makes the connection.
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* @return true if connection created
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* @throws SourceConnectionException
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*/
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private boolean makeConnection()throws SourceConnectionException {
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if (doLog ){
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DriverManager.setLogWriter(new PrintWriter(System.out));
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}
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try {
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if (makeConnectionString() == false){
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throw new SourceConnectionException ("Error in Connection String");
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}
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if (mDbms.equalsIgnoreCase(ODDBC) ){
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//not necessarily limited to ODBC
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java.util.Properties prop = new java.util.Properties();
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// prop.put("charSet", "Big5");
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prop.put("user", mUserName);
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prop.put("password", mPwd);
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// DriverManager.setLogWriter(new PrintWriter(System.out));
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mConn = DriverManager.getConnection(mUrl, prop);
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}else{
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mConn = DriverManager.getConnection(mUrl, mUserName, mPwd);
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}
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mConn.setCatalog(mDb); //
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logger.info("Connected to " + mConn.getCatalog());
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mStmt = mConn.createStatement();
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this.connExist = true;
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return true;
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}catch (SQLException e){
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logger.error("Problems when trying to open the database !!!\n" +
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"URL: " + mUrl + "\n" +
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"Exception: " + e);
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throw new SourceConnectionException ();
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}
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}
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/**
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* Makes the connection string
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* @return false if ClassNotFoundException, else true
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*/
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private boolean makeConnectionString(){
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String selectMethod;
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String server;
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if (isCursor) {
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selectMethod = SELECT_CURSOR;
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} else {
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selectMethod = SELECT_DIRECT;
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}
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try{
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if (DEBUG_LOG_WRITER) {
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DriverManager.setLogWriter((new PrintWriter(System.out)));
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} else if (mDbms.equalsIgnoreCase(SQL_SERVER_2005)) {
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Class.forName(clsSQLServer2005);
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server = mServer + ":" + mPort;
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mUrl = urlSQLServer2005 + server + ";databaseName=" + mDb +";SelectMethod="+ selectMethod;
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}
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else if (mDbms.equalsIgnoreCase(SQL_SERVER_2008)) {
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Class.forName(clsSQLServer2008);
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server = mServer + ":" + mPort;
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mUrl = urlSQLServer2008 + server + ";databaseName=" + mDb +";SelectMethod="+ selectMethod;
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}
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else if (mDbms.equalsIgnoreCase(ACCESS)) {
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Class.forName(clsODBC);
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//mDb must be the file path
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mUrl = urlODBC + "Driver={Microsoft Access Driver (*.mdb)};DBQ=";
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mUrl += mDb.trim() + ";DriverID=22;READONLY=false}";
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}
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else if (mDbms.equalsIgnoreCase(EXCEL)) {
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Class.forName(clsODBC);
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mUrl = urlODBC + "jdbc:odbc:Driver={Microsoft Excel Driver (*.xls)};DBQ=";
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mUrl += mDb.trim() + ";DriverID=22;READONLY=false";
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}
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else if (mDbms.equalsIgnoreCase(ODDBC)) {
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//mDb must be the System DNS name
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Class.forName(clsODBC);
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mUrl = urlODBC + mDb ;
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}
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else if (mDbms.equalsIgnoreCase(ORACLE)) {
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Class.forName(clsOracle);
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mUrl = urlOracle + mDb ;
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}
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else if (mDbms.equalsIgnoreCase(DB2)) {
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Class.forName(clsDB2);
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mUrl = urlDB2 + mDb;
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}
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else if (mDbms.equalsIgnoreCase("SQLServerDdtek")) {
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Class.forName(clsSQLServerDdtek);
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mUrl = urlDataDirectSQLServer + mServer;
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}
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else if (mDbms.equalsIgnoreCase(POSTGRESQL9)) {
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Class.forName(clsPostgreSQL);
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server = mServer + ":" + mPort;
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mUrl = urlPostgreSQL + server+ "/" + mDb;
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}
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else if (mDbms.equalsIgnoreCase(MYSQL)) {
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Class.forName(clsMySQL);
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server = mServer + ":" + mPort;
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mUrl = urlMySQL + server+ "/" + mDb + "?useUnicode=true&characterEncoding=utf8" + "&zeroDateTimeBehavior=convertToNull";
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}
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else {
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throw new RuntimeException("Unsupported Database type");
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}
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logger.debug("Connection String: " + mUrl);
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return true;
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}catch (ClassNotFoundException e){
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logger.error("Datenbank-Treiber-Klasse konnte nicht geladen werden\n" + "Exception: " + e.toString());
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return false;
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}
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}
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373
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/* ******************** SETTER *************************************/
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374
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/**
|
|
376
|
* @param query
|
|
377
|
*/
|
|
378
|
public Source setQuery (String query){
|
|
379
|
mQuery = query;
|
|
380
|
return this;
|
|
381
|
}
|
|
382
|
|
|
383
|
/**
|
|
384
|
* Sets the username.
|
|
385
|
* @param userName
|
|
386
|
*/
|
|
387
|
public Source setUsername (String userName){
|
|
388
|
if (userName == null){
|
|
389
|
this.mUserName = userNameDefault;
|
|
390
|
}else{
|
|
391
|
this.mUserName = userName;
|
|
392
|
}
|
|
393
|
this.connExist = false;
|
|
394
|
return this;
|
|
395
|
}
|
|
396
|
|
|
397
|
/**
|
|
398
|
* Sets the password.
|
|
399
|
* @param pwd
|
|
400
|
*/
|
|
401
|
public Source setPassword (String pwd){
|
|
402
|
if (pwd == null){
|
|
403
|
this.mPwd = pwdDefault;
|
|
404
|
}else{
|
|
405
|
this.mPwd = pwd;
|
|
406
|
}
|
|
407
|
this.connExist = false;
|
|
408
|
return this;
|
|
409
|
}
|
|
410
|
|
|
411
|
/**
|
|
412
|
* Sets the username and password.
|
|
413
|
* @param userName
|
|
414
|
* @param pwd
|
|
415
|
*/
|
|
416
|
public Source setUserAndPwd (String userName, String pwd){
|
|
417
|
setUsername(userName);
|
|
418
|
setPassword(pwd);
|
|
419
|
return this;
|
|
420
|
}
|
|
421
|
|
|
422
|
/**
|
|
423
|
* Sets the port.
|
|
424
|
* @param userName
|
|
425
|
* @param pwd
|
|
426
|
*/
|
|
427
|
public Source setPort (int port){
|
|
428
|
this.mPort = port;
|
|
429
|
this.connExist = false;
|
|
430
|
return this;
|
|
431
|
}
|
|
432
|
|
|
433
|
public String getDatabase(){
|
|
434
|
return mDb;
|
|
435
|
}
|
|
436
|
|
|
437
|
public String getServer(){
|
|
438
|
return mServer;
|
|
439
|
}
|
|
440
|
|
|
441
|
|
|
442
|
public boolean isDoLog() {
|
|
443
|
return doLog;
|
|
444
|
}
|
|
445
|
|
|
446
|
public void setDoLog(boolean doLog) {
|
|
447
|
this.doLog = doLog;
|
|
448
|
}
|
|
449
|
|
|
450
|
/**
|
|
451
|
* Checks if an attribute exists in the database schema. At the moment only supported
|
|
452
|
* for SQL Server.
|
|
453
|
* TODO implement for others.
|
|
454
|
* @param tableName
|
|
455
|
* @param dbAttribute
|
|
456
|
* @return
|
|
457
|
* @throws MethodNotSupportedException
|
|
458
|
*/
|
|
459
|
public boolean checkColumnExists(String tableName, String dbAttribute) throws DatabaseTypeNotSupportedException{
|
|
460
|
if (mDbms.equalsIgnoreCase(SQL_SERVER_2005)|| mDbms.equalsIgnoreCase(SQL_SERVER_2008) ){
|
|
461
|
String strQuery = "SELECT Count(t.id) as n " +
|
|
462
|
" FROM sysobjects AS t " +
|
|
463
|
" INNER JOIN syscolumns AS c ON t.id = c.id " +
|
|
464
|
" WHERE (t.xtype = 'U') AND " +
|
|
465
|
" (t.name = '" + tableName + "') AND " +
|
|
466
|
" (c.name = '" + dbAttribute + "')";
|
|
467
|
ResultSet rs = getResultSet(strQuery) ;
|
|
468
|
int n;
|
|
469
|
try {
|
|
470
|
rs.next();
|
|
471
|
n = rs.getInt("n");
|
|
472
|
return n>0;
|
|
473
|
} catch (SQLException e) {
|
|
474
|
e.printStackTrace();
|
|
475
|
return false;
|
|
476
|
}
|
|
477
|
}else{
|
|
478
|
throw new DatabaseTypeNotSupportedException("Check column exist is not supported by the database system");
|
|
479
|
}
|
|
480
|
}
|
|
481
|
|
|
482
|
@Override
|
|
483
|
public String toString(){
|
|
484
|
if (mDb != null){
|
|
485
|
return mDb;
|
|
486
|
}else if (mUrl == null){
|
|
487
|
return super.toString();
|
|
488
|
}else{
|
|
489
|
return mUrl;
|
|
490
|
}
|
|
491
|
}
|
|
492
|
|
|
493
|
}
|