Beispiel #1
0
QString SqliteDriver::sqlCreateTable(FLTableMetaData *tmd)
{
#ifndef FL_QUICK_CLIENT
  if (!tmd)
    return QString::null;

  QString primaryKey(QString::null);
  QString sql = "CREATE TABLE " + tmd->name() + " (";

  FLFieldMetaData *field;
  FLTableMetaData::FLFieldMetaDataList *fieldList = tmd->fieldList();

  unsigned int unlocks = 0;
  QDictIterator<FLFieldMetaData> it(*fieldList);
  while ((field = it.current()) != 0) {
    ++it;
    if (field->type() == FLFieldMetaData::Unlock)
      unlocks++;
  }
  if (unlocks > 1) {
#ifdef FL_DEBUG
    qWarning("FLManager : " + QApplication::tr("No se ha podido crear la tabla ") + tmd->name());
    qWarning("FLManager : " + QApplication::tr("Hay más de un campo tipo unlock. Solo puede haber uno."));
#endif

    return QString::null;
  }

  QDictIterator<FLFieldMetaData> it2(*fieldList);
  while ((field = it2.current()) != 0) {
    ++it2;
    sql += field->name();
    switch (field->type()) {
      case QVariant::Int:
        sql += " INTEGER";
        break;

      case QVariant::UInt:
        sql += " INTEGER";
        break;

      case QVariant::Bool:
      case FLFieldMetaData::Unlock:
        sql += " BOOLEAN";
        break;

      case QVariant::Double:
        sql += " FLOAT";
        break;

      case QVariant::Time:
        sql += " VARCHAR(20)";
        break;

      case QVariant::Date:
        sql += " VARCHAR(20)";
        break;

      case QVariant::Pixmap:
        sql += " TEXT";
        break;

      case QVariant::String:
        sql += " VARCHAR";
        break;

      case QVariant::StringList:
        sql += " TEXT";
        break;

      case QVariant::ByteArray:
        sql += " CLOB";
        break;

      case FLFieldMetaData::Serial:
        sql += " INTEGER";
        if (!field->isPrimaryKey())
          sql += " PRIMARY KEY";
        break;
    }

    int longitud = field->length();
    if (longitud > 0)
      sql += "(" + QString::number(longitud) + ")";

    if (field->isPrimaryKey()) {
      if (primaryKey.isEmpty()) {
        sql += " PRIMARY KEY";
        primaryKey = field->name();
      } else {
#ifdef FL_DEBUG
        qWarning(QApplication::tr("FLManager : Tabla -> ") +
                 tmd->name() + QApplication::tr(" . Se ha intentado poner una segunda clave primaria para el campo ") +
                 field->name() + QApplication::tr(" , pero el campo ") + primaryKey +
                 QApplication::tr(" ya es clave primaria. Sólo puede existir una clave primaria en FLTableMetaData, use FLCompoundKey para crear claves compuestas."));
#endif

        return QString::null;
      }
    } else {
      if (field->isUnique())
        sql += " UNIQUE";
      if (!field->allowNull())
        sql += " NOT NULL";
      else
        sql += " NULL";
    }

    if (it2.current())
      sql += ",";
  }

  sql += ");";

  QString createIndex = "CREATE INDEX " + tmd->name() + "_pkey ON " + tmd->name() + " (" + tmd->primaryKey() + ");";

  sql += createIndex;

  return sql;

#endif //FL_QUICK_CLIENT

  return QString::null;
}
Beispiel #2
0
bool SqliteDriver::alterTable(const QString &mtd1, const QString &mtd2, const QString &key)
{
#ifndef FL_QUICK_CLIENT
  FLTableMetaData *oldMTD = 0;
  FLTableMetaData *newMTD = 0;
  QDomDocument doc("doc");
  QDomElement docElem;

  if (!FLUtil::domDocumentSetContent(doc, mtd1)) {
#ifdef FL_DEBUG
    qWarning("FLManager::alterTable : " + QApplication::tr("Error al cargar los metadatos."));
#endif
  } else {
    docElem = doc.documentElement();
    oldMTD = db_->manager()->metadata(&docElem, true);
  }

  if (oldMTD && oldMTD->isQuery())
    return true;

  if (!FLUtil::domDocumentSetContent(doc, mtd2)) {
#ifdef FL_DEBUG
    qWarning("FLManager::alterTable : " + QApplication::tr("Error al cargar los metadatos."));
#endif

    return false;
  } else {
    docElem = doc.documentElement();
    newMTD = db_->manager()->metadata(&docElem, true);
  }

  if (!oldMTD)
    oldMTD = newMTD;

  if (oldMTD->name() != newMTD->name()) {
#ifdef FL_DEBUG
    qWarning("FLManager::alterTable : " + QApplication::tr("Los nombres de las tablas nueva y vieja difieren."));
#endif

    if ((oldMTD != newMTD) && oldMTD)
      delete oldMTD;
    if (newMTD)
      delete newMTD;
    return false;
  }

  QString oldPK = oldMTD->primaryKey(), newPK = newMTD->primaryKey();
  if (oldPK != newPK) {
#ifdef FL_DEBUG
    qWarning("FLManager::alterTable : " + QApplication::tr("Los nombres de las claves primarias difieren."));
#endif

    if ((oldMTD != newMTD) && oldMTD)
      delete oldMTD;
    if (newMTD)
      delete newMTD;
    return false;
  }

  if (oldMTD->fieldType(oldPK) != newMTD->fieldType(newPK)) {
#ifdef FL_DEBUG
    qWarning("FLManager::alterTable : " + QApplication::tr("Los tipos de las claves primarias difieren."));
#endif

    if ((oldMTD != newMTD) && oldMTD)
      delete oldMTD;
    if (newMTD)
      delete newMTD;
    return false;
  }

  if (db_->manager()->checkMetaData(oldMTD, newMTD)) {
    if ((oldMTD != newMTD) && oldMTD)
      delete oldMTD;
    if (newMTD)
      delete newMTD;
    return true;
  }

  if (!db_->manager()->existsTable(oldMTD->name())) {
#ifdef FL_DEBUG
    qWarning("FLManager::alterTable : " + QApplication::tr("La tabla %1 antigua de donde importar los registros no existe.").arg(oldMTD->name()));
#endif

    if ((oldMTD != newMTD) && oldMTD)
      delete oldMTD;
    if (newMTD)
      delete newMTD;
    return false;
  }

  FLTableMetaData::FLFieldMetaDataList *fieldList = oldMTD->fieldList();
  FLFieldMetaData *oldField = 0;

  if (!fieldList) {
#ifdef FL_DEBUG
    qWarning("FLManager::alterTable : " + QApplication::tr("Los antiguos metadatos no tienen campos."));
#endif

    if ((oldMTD != newMTD) && oldMTD)
      delete oldMTD;
    if (newMTD)
      delete newMTD;
    return false;
  }

  QString renameOld = oldMTD->name().left(6) + "alteredtable" + QDateTime::currentDateTime().toString("ddhhssz");

  if (!db_->dbAux()) {
    if ((oldMTD != newMTD) && oldMTD)
      delete oldMTD;
    if (newMTD)
      delete newMTD;
    return false;
  }

  db_->dbAux() ->transaction();

  if (!key.isEmpty() && key.length() == 40) {
    QSqlCursor c("flfiles", true, db_->dbAux());
    c.setForwardOnly(true);
    QSqlRecord *buffer;
    c.setFilter("nombre='" + renameOld + ".mtd'");
    c.select();
    if (!c.next()) {
      buffer = c.primeInsert();
      buffer->setValue("nombre", renameOld + ".mtd");
      buffer->setValue("contenido", mtd1);
      buffer->setValue("sha", key);
      c.insert();
    }
  }

  QSqlQuery q(QString::null, db_->dbAux());

  if (!q.exec("CREATE TABLE " + renameOld + " AS SELECT * FROM " + oldMTD->name() + ";") || !q.exec("DROP TABLE " + oldMTD->name() + ";")) {
#ifdef FL_DEBUG
    qWarning("FLManager::alterTable : " + QApplication::tr("No se ha podido renombrar la tabla antigua."));
#endif

    db_->dbAux() ->rollback();
    if ((oldMTD != newMTD) && oldMTD)
      delete oldMTD;
    if (newMTD)
      delete newMTD;
    return false;
  }

  if (!db_->manager()->createTable(newMTD)) {
    db_->dbAux() ->rollback();
    if ((oldMTD != newMTD) && oldMTD)
      delete oldMTD;
    if (newMTD)
      delete newMTD;
    return false;
  }

  QSqlCursor oldCursor(renameOld, true, db_->dbAux());
  oldCursor.setMode(QSqlCursor::ReadOnly);
  QSqlCursor newCursor(newMTD->name(), true, db_->dbAux());
  newCursor.setMode(QSqlCursor::Insert);

  oldCursor.select();
  int totalSteps = oldCursor.size();
  QProgressDialog progress(QApplication::tr("Reestructurando registros para %1...").arg(newMTD->alias()), 0, totalSteps, qApp->focusWidget(), 0, true);
  progress.setCaption(QApplication::tr("Tabla modificada"));

  int step = 0;
  QSqlRecord *newBuffer;
  QString sequence;
  fieldList = newMTD->fieldList();
  FLFieldMetaData *newField = 0;

  if (!fieldList) {
#ifdef FL_DEBUG
    qWarning("FLManager::alterTable : " + QApplication::tr("Los nuevos metadatos no tienen campos."));
#endif

    db_->dbAux() ->rollback();
    if ((oldMTD != newMTD) && oldMTD)
      delete oldMTD;
    if (newMTD)
      delete newMTD;
    return false;
  }

  if (fieldList->isEmpty()) {
#ifdef FL_DEBUG
    qWarning("FLManager::alterTable : " + QApplication::tr("Los nuevos metadatos no tienen campos."));
#endif

    db_->dbAux() ->rollback();
    if ((oldMTD != newMTD) && oldMTD)
      delete oldMTD;
    if (newMTD)
      delete newMTD;
    return false;
  }

  QVariant v;
  bool ok = true;
  while (oldCursor.next()) {
    newBuffer = newCursor.primeInsert();

    QDictIterator<FLFieldMetaData> it(*fieldList);
    while ((newField = it.current()) != 0) {
      ++it;
      oldField = oldMTD->field(newField->name());
      if (!oldField || !oldCursor.field(oldField->name())) {
        if (!oldField)
          oldField = newField;
        v = newField->defaultValue();
        v.cast(FLFieldMetaData::flDecodeType(newField->type()));
      } else {
        v = oldCursor.value(newField->name());
        if ((!oldField->allowNull() || !newField->allowNull()) &&
            (v.isNull() || !v.isValid())) {
          QVariant defVal(newField->defaultValue());
          if (!defVal.isNull() && defVal.isValid())
            v = defVal;
        }
        if (!v.cast(newBuffer->value(newField->name()).type())) {
#ifdef FL_DEBUG
          qWarning("FLManager::alterTable : " +
                   QApplication::tr("Los tipos del campo %1 no son compatibles. Se introducirá un valor nulo.")
                   .arg(newField->name()));
#endif
        }
      }
      if ((!oldField->allowNull() || !newField->allowNull()) && (v.isNull() || !v.isValid())) {
        switch (oldField->type()) {
          case QVariant::Int:
          case FLFieldMetaData::Serial:
          case QVariant::UInt:
          case QVariant::Bool:
          case FLFieldMetaData::Unlock:
            v =  int(0);
            break;
          case QVariant::Double:
            v = double(0.0);
            break;
          case QVariant::Time:
            v = QTime::currentTime();
            break;
          case QVariant::Date:
            v = QDate::currentDate();
            break;
          default:
            v = QString("NULL").left(newField->length());
            break;
        }
      }
      newBuffer->setValue(newField->name(), v);
    }

    if (!newCursor.insert()) {
      ok = false;
      break;
    }
    progress.setProgress(++step);
  }

  progress.setProgress(totalSteps);

  if ((oldMTD != newMTD) && oldMTD)
    delete oldMTD;

  if (newMTD)
    delete newMTD;

  if (ok)
    db_->dbAux() ->commit();
  else {
    db_->dbAux() ->rollback();
    return false;
  }
#else

  return true;
#endif //FL_QUICK_CLIENT
}