Пример #1
0
    @Override
    public ReturnState createTable(RpcController controller, TableDescProto request) {

      String[] splitted = CatalogUtil.splitFQTableName(request.getTableName());

      String dbName = splitted[0];
      String tbName = splitted[1];

      if (linkedMetadataManager.existsDatabase(dbName)) {
        return errInsufficientPrivilege("drop a table in database '" + dbName + "'");
      }

      if (metaDictionary.isSystemDatabase(dbName)) {
        return errInsufficientPrivilege("create a table in database '" + dbName + "'");
      }

      wlock.lock();
      try {
        store.createTable(request);
        LOG.info(
            String.format(
                "relation \"%s\" is added to the catalog (%s)",
                CatalogUtil.getCanonicalTableName(dbName, tbName), bindAddressStr));
        return OK;

      } catch (Throwable t) {
        printStackTraceIfError(LOG, t);
        return returnError(t);

      } finally {
        wlock.unlock();
      }
    }
Пример #2
0
    @Override
    public ReturnState dropTable(RpcController controller, TableIdentifierProto request)
        throws ServiceException {

      String dbName = request.getDatabaseName();
      String tbName = request.getTableName();

      if (linkedMetadataManager.existsDatabase(dbName)) {
        return errInsufficientPrivilege("drop a table in database '" + dbName + "'");
      }

      if (metaDictionary.isSystemDatabase(dbName)) {
        return errInsufficientPrivilege("drop a table in database '" + dbName + "'");
      }

      wlock.lock();
      try {
        store.dropTable(dbName, tbName);
        LOG.info(
            String.format(
                "relation \"%s\" is deleted from the catalog (%s)",
                CatalogUtil.getCanonicalTableName(dbName, tbName), bindAddressStr));

        return OK;

      } catch (Throwable t) {
        printStackTraceIfError(LOG, t);
        return returnError(t);

      } finally {
        wlock.unlock();
      }
    }
Пример #3
0
    private FunctionDescProto findFunction(
        String signature,
        FunctionType type,
        List<TajoDataTypes.DataType> params,
        boolean strictTypeCheck) {
      List<FunctionDescProto> candidates = Lists.newArrayList();

      if (functions.containsKey(signature)) {
        if (strictTypeCheck) {
          for (FunctionDescProto func : functions.get(signature)) {
            if (func.getSignature().getType() == type
                && func.getSignature().getParameterTypesList().equals(params)) {
              candidates.add(func);
            }
          }
        } else {
          for (FunctionDescProto func : functions.get(signature)) {
            if (func.getSignature().getParameterTypesList() != null
                && CatalogUtil.isMatchedFunction(
                    func.getSignature().getParameterTypesList(), params)) {
              candidates.add(func);
            }
          }
        }
      }

      // if there are more than one function candidates, we choose the nearest matched function.
      if (candidates.size() > 0) {
        return findNearestMatchedFunction(candidates);
      } else {
        return null;
      }
    }
Пример #4
0
    @Override
    public ReturnState alterTable(RpcController controller, AlterTableDescProto proto) {
      String[] split = CatalogUtil.splitTableName(proto.getTableName());

      if (linkedMetadataManager.existsDatabase(split[0])) {
        return errInsufficientPrivilege("alter a table in database '" + split[0] + "'");
      }

      if (metaDictionary.isSystemDatabase(split[0])) {
        return errInsufficientPrivilege("alter a table in database '" + split[0] + "'");
      }

      wlock.lock();

      try {
        store.alterTable(proto);
        return OK;

      } catch (Throwable t) {
        printStackTraceIfError(LOG, t);
        return returnError(t);

      } finally {
        wlock.unlock();
      }
    }
Пример #5
0
    private FunctionDescProto findFunction(String signature, List<TajoDataTypes.DataType> params) {
      List<FunctionDescProto> candidates = Lists.newArrayList();

      if (functions.containsKey(signature)) {
        for (FunctionDescProto func : functions.get(signature)) {
          if (func.getSignature().getParameterTypesList() != null
              && func.getSignature().getParameterTypesList().equals(params)) {
            candidates.add(func);
          }
        }
      }

      /*
       *
       * FALL BACK to look for nearest match
       * WORKING BUT BAD WAY TO IMPLEMENT.I WOULD RATHER implement compareTo in FunctionDesc to keep them
       * in sorted order of param types LIKE INT1 SHOULD BE BEFORE INT2 should be before INT3 so on.
       * Due to possibility of multiple parameters and types the permutation and combinations are endless
       * to implement compareTo so decided to take the shortcut.
       *
       * */
      if (functions.containsKey(signature)) {
        for (FunctionDescProto func : functions.get(signature)) {
          if (func.getSignature().getParameterTypesList() != null
              && CatalogUtil.isMatchedFunction(
                  func.getSignature().getParameterTypesList(), params)) {
            candidates.add(func);
          }
        }

        // if there are more than one function candidates, we choose the nearest matched function.
        if (candidates.size() > 0) {
          return findNearestMatchedFunction(candidates);
        } else {
          return null;
        }
      }

      return null;
    }