import java.io.*;
import java.util.*;
import freemarker.template.*;
-import com.javaexchange.dbConnectionBroker.*;
import mir.storage.StorageObject;
import mir.entity.*;
import mir.misc.*;
+import com.codestudio.sql.*;
+import com.codestudio.util.*;
/**
*/
public class Database implements StorageObject {
- protected DbConnectionBroker myBroker;
protected String theTable;
protected String theCoreTable=null;
protected String thePKeyName="id";
protected int thePKeyType;
protected boolean evaluatedMetaData=false;
- protected ArrayList metadataFields,metadataLabels,metadataNotNullFields;
+ protected ArrayList metadataFields,metadataLabels,
+ metadataNotNullFields;
protected int[] metadataTypes;
protected Class theEntityClass;
protected StorageObject myselfDatabase;
* @param String confFilename Dateiname der Konfigurationsdatei
*/
public Database() throws StorageObjectException {
- theLog = Logfile.getInstance(MirConfig.getProp("Home") + MirConfig.getProp("Database.Logfile"));
- String database_username=MirConfig.getProp("Database.Username");
- String database_password=MirConfig.getProp("Database.Password");
- String database_host=MirConfig.getProp("Database.Host");
+ theLog = Logfile.getInstance(MirConfig.getProp("Home")+
+ MirConfig.getProp("Database.Logfile"));
String theAdaptorName=MirConfig.getProp("Database.Adaptor");
+ defaultLimit = Integer.parseInt(MirConfig.getProp("Database.Limit"));
try {
theEntityClass = Class.forName("mir.entity.GenericEntity");
theAdaptor = (DatabaseAdaptor)Class.forName(theAdaptorName).newInstance();
- defaultLimit = Integer.parseInt(MirConfig.getProp("Database.Limit"));
+ } catch (Exception e){
+ theLog.printError("Error in Database() constructor with "+
+ theAdaptorName + " -- " +e.toString());
+ throw new StorageObjectException("Error in Database() constructor with "
+ +e.toString());
+ }
+ /*String database_username=MirConfig.getProp("Database.Username");
+ String database_password=MirConfig.getProp("Database.Password");
+ String database_host=MirConfig.getProp("Database.Host");
+ try {
database_driver=theAdaptor.getDriver();
- database_url=theAdaptor.getURL(database_username,database_password,database_host);
- theLog.printDebugInfo("adding Broker with: " +database_driver+":"+database_url );
+ database_url=theAdaptor.getURL(database_username,database_password,
+ database_host);
+ theLog.printDebugInfo("adding Broker with: " +database_driver+":"+
+ database_url );
MirConfig.addBroker(database_driver,database_url);
- myBroker=MirConfig.getBroker();
- }
- catch (Exception e){
- theLog.printError("Bei Konstruktion von Database() with " + theAdaptorName + " -- " +e.toString());
- throw new StorageObjectException(e.toString());
- }
+ //myBroker=MirConfig.getBroker();
+ }*/
}
/**
/*
* Dient dazu vererbte Tabellen bei objectrelationalen DBMS
- * zu speichern, wenn die id einer Tabelle in der parenttabelle verwaltet wird.
+ * zu speichern, wenn die id einer Tabelle in der parenttabelle verwaltet
+ * wird.
* @return liefert theCoreTabel als String zurueck, wenn gesetzt, sonst
* the Table
*/
con = getPooledCon();
stmt = con.createStatement();
// counting rows
- if (theAdaptor.hasLimit()) {
- rs = executeSql(stmt, countSql.toString());
- if (rs != null) {
- if (rs.next())
- count = rs.getInt(1);
- rs.close();
- } else {
- theLog.printError("Mh. Konnte nicht zaehlen: " + countSql);
- }
- }
- //nothing in the table: return null
- if(count<=0){
- return null;
- }
+
+ /** @todo select count(*) should be optimized:
+ * 1. it should take place after select statement because in some
+ * cases it is not necessary anymore.
+ * 2. it is only needed if entitylist needs information about how
+ * many datasets there are overall
+ *
+ * optimization:
+ *
+ * if we manage to have the full information about allData already
+ * with the select statement, then we set it in entitylist, other
+ * wise we fetch it. /rk
+ * */
+
+
+
// hier select
rs = executeSql(stmt, selectSql.toString());
if (rs != null) {
}
rs.close();
}
- // making entitylist
- if (!(theAdaptor.hasLimit()))
- count = offsetCount;
+
+ // making entitylist infos
+ if (!(theAdaptor.hasLimit())) count = offsetCount;
+
if (theReturnList != null) {
+ // now we decide if we have to know an overall count...
+ count=offsetCount;
+ if (limit > -1 && offset > -1) {
+ if (offsetCount==limit) {
+ rs = executeSql(stmt, countSql.toString());
+ if (rs != null) {
+ if ( rs.next() ) count = rs.getInt(1);
+ rs.close();
+ }
+ else theLog.printError("Could not count: " + countSql);
+ }
+ }
+
theReturnList.setCount(count);
+
theReturnList.setOffset(offset);
theReturnList.setWhere(wc);
theReturnList.setOrder(ob);
if (offset + offsetCount < count) {
theReturnList.setNextBatch(offset + limit);
}
+
+
+
}
} catch (SQLException sqe) {
throwSQLException(sqe, "selectByWhereClause");
return theReturnList;
}
+
/**
* Bastelt aus einer Zeile der Datenbank ein EntityObjekt.
*
* @return Entity Die Entity.
*/
- public Entity makeEntityFromResultSet (ResultSet rs) throws StorageObjectException {
+ private Entity makeEntityFromResultSet (ResultSet rs) throws StorageObjectException {
HashMap theResultHash = new HashMap();
String theResult = null;
int theType;
}
}
if (cache != null && theResultHash.containsKey(thePKeyName) &&
- (cache.containsKey((String)theResultHash.get(thePKeyName)) > -1)) {
- //theLog.printDebugInfo("CACHE: (out) "+ theResultHash.get(thePKeyName)+ " :"+theTable);
+ (cache.containsKey((String)theResultHash.get(thePKeyName)) > -1)) {
returnEntity = (Entity)cache.get((String)theResultHash.get(thePKeyName));
- }
- else {
+ } else {
if (theEntityClass != null) {
returnEntity = (Entity)theEntityClass.newInstance();
returnEntity.setValues(theResultHash);
//theLog.printDebugInfo("CACHE: ( in) " + returnEntity.getId() + " :"+theTable);
cache.put(returnEntity.getId(), returnEntity);
}
- }
- else {
+ } else {
throwStorageObjectException("Interner Fehler theEntityClass nicht gesetzt!");
}
}
- } // try
- catch (IllegalAccessException e) {
+ } catch (IllegalAccessException e) {
throwStorageObjectException("Kein Zugriff! -- " + e.toString());
} catch (IOException e) {
throwStorageObjectException("IOException! -- " + e.toString());
Connection con = null;
Statement stmt = null;
// build sql
- StringBuffer sql = new StringBuffer("select ").append(thePKeyName).append(",").append(name).append(" from ").append(theTable);
+ StringBuffer sql = new StringBuffer("select ").append(thePKeyName)
+ .append(",").append(name).append(" from ")
+ .append(theTable);
if (where != null && !(where.length() == 0))
sql.append(" where ").append(where);
sql.append(" order by ");
// execute sql
try {
con = getPooledCon();
+ } catch (Exception e) {
+ throw new StorageObjectException(e.toString());
+ }
+ try {
stmt = con.createStatement();
ResultSet rs = executeSql(stmt, sql.toString());
if (rs != null) {
rs.close();
}
} catch (Exception e) {
- theLog.printDebugInfo(e.toString());
+ theLog.printError("getPopupData: "+e.toString());
throw new StorageObjectException(e.toString());
} finally {
freeConnection(con, stmt);
}
catch (SQLException e)
{
- theLog.printDebugInfo("Failed: " + (new java.util.Date().getTime() - startTime) + "ms. for: "
- + sql);
+ theLog.printDebugInfo("Failed: " + (new java.util.Date().getTime()
+ - startTime) + "ms. for: "+ sql);
throw e;
}
* @return Liefert ResultSet des Statements zurueck.
* @exception StorageObjectException, SQLException
*/
- public ResultSet executeSql (PreparedStatement stmt) throws StorageObjectException,
- SQLException {
+ public ResultSet executeSql (PreparedStatement stmt)
+ throws StorageObjectException, SQLException {
long startTime = (new java.util.Date()).getTime();
ResultSet rs = stmt.executeQuery();
freeConnection(con,stmt);
}
theLog.printInfo(theTable + " has "+ result +" rows where " + where);
- theLog.printInfo((new java.util.Date().getTime() - startTime) + "ms. for: " + sql);
+ theLog.printInfo((new java.util.Date().getTime() - startTime) + "ms. for: "
+ + sql);
return result;
}
try
{
rs = stmt.executeUpdate(sql);
- theLog.printInfo((new java.util.Date().getTime() - startTime) + "ms. for: " + sql);
+ theLog.printInfo((new java.util.Date().getTime() - startTime) + "ms. for: "
+ + sql);
}
catch (SQLException e)
{
- theLog.printDebugInfo("Failed: " + (new java.util.Date().getTime() - startTime) + "ms. for: "
- + sql);
+ theLog.printDebugInfo("Failed: " + (new java.util.Date().getTime()
+ - startTime) + "ms. for: "+ sql);
throw e;
}
return rs;
throw new StorageObjectException("executeUpdate failed: "+e.toString());
}
finally { freeConnection(con,pstmt); }
- theLog.printInfo((new java.util.Date().getTime() - startTime) + "ms. for: " + sql);
+ theLog.printInfo((new java.util.Date().getTime() - startTime) + "ms. for: "
+ + sql);
return result;
}
* @param md ResultSetMetaData
* @exception StorageObjectException
*/
- private void evalMetaData (ResultSetMetaData md) throws StorageObjectException {
+ private void evalMetaData (ResultSetMetaData md)
+ throws StorageObjectException {
+
this.evaluatedMetaData = true;
this.metadataFields = new ArrayList();
this.metadataLabels = new ArrayList();
}
}
- /**
- * Datenbankverbindung wird geschlossen
- */
- public void disconnectPool () throws StorageObjectException {
- try {
- myBroker.destroy(100);
- } catch (SQLException sqe) {
- throwSQLException(sqe, "disconnectPool");
- }
- }
- /**
- * Returns Connection-Object out of the PoolBroker.
- *
- * @return Connection Object.
- */
- public Connection getPooledCon () throws StorageObjectException {
- if (myBroker != null) {
- Connection con = myBroker.getConnection();
- if (con != null)
- return con;
+ public Connection getPooledCon() throws StorageObjectException {
+ /* @todo , doublecheck but I'm pretty sure that this is unnecessary. -mh
+ try{
+ Class.forName("com.codestudio.sql.PoolMan").newInstance();
+ } catch (Exception e){
+ throw new StorageObjectException("Could not find the PoolMan Driver"
+ +e.toString());
+ }*/
+ Connection con = null;
+ try{
+ con = SQLManager.getInstance().requestConnection();
+ } catch(SQLException e){
+ theLog.printError("could not connect to the database "+e.toString());
+ System.err.println("could not connect to the database "+e.toString());
+ throw new StorageObjectException("Could not connect to the database"+
+ e.toString());
}
- throw new StorageObjectException("No connection to database!");
+ return con;
}
- /**
- * Connection und StatementObjekt werden geschlossen und an den Connectionpool
- * zurückgeben
- * @param con Connection zur Datenbank
- * @param stmt Statement-Objekt
- */
public void freeConnection (Connection con, Statement stmt)
throws StorageObjectException {
- try {
- if (stmt != null)
- stmt.close();
- } catch (SQLException e1) {
- theLog.printDebugInfo(e1.toString());
- throw new StorageObjectException("DB, in freeConnection: "+e1.toString());
- }
- if (con != null)
- myBroker.freeConnection(con);
- else {
- theLog.printDebugInfo("Con was null!");
- throw new StorageObjectException("Con was null!");
- }
+ SQLManager.getInstance().closeStatement(stmt);
+ SQLManager.getInstance().returnConnection(con);
}
/**
* @param wo Funktonsname, in der die SQLException geworfen wurde
* @exception StorageObjectException
*/
- protected void throwSQLException (SQLException sqe, String wo) throws StorageObjectException {
+ protected void throwSQLException (SQLException sqe, String wo)
+ throws StorageObjectException {
String state = "";
String message = "";
int vendor = 0;
sqe.toString());
}
- protected void _throwStorageObjectException (Exception e, String wo) throws StorageObjectException {
+ protected void _throwStorageObjectException (Exception e, String wo)
+ throws StorageObjectException {
if (e != null) {
theLog.printError(e.toString()+ wo);
throw new StorageObjectException(wo + e.toString());
}
/**
- * Loggt Fehlermeldung mit dem Parameter Message und wirft dannach eine StorageObjectException
+ * Loggt Fehlermeldung mit dem Parameter Message und wirft dannach
+ * eine StorageObjectException
* @param message Nachricht mit dem Fehler
* @exception StorageObjectException
*/
- void throwStorageObjectException (String message) throws StorageObjectException {
+ void throwStorageObjectException (String message)
+ throws StorageObjectException {
_throwStorageObjectException(null, message);
}
-
+
}
projects / mir.git / blobdiff