Exemplo n.º 1
0
  @Override
  protected final void prepare(ExecuteContext ctx) throws SQLException {

    // [#1296] These dialects do not implement FOR UPDATE. But the same
    // effect can be achieved using ResultSet.CONCUR_UPDATABLE
    if (isForUpdate() && asList(CUBRID, SQLSERVER).contains(ctx.getDialect())) {
      ctx.statement(
          ctx.getConnection().prepareStatement(ctx.sql(), TYPE_SCROLL_SENSITIVE, CONCUR_UPDATABLE));
    }

    // Regular behaviour
    else {
      ctx.statement(ctx.getConnection().prepareStatement(ctx.sql()));
    }

    // [#1263] Allow for negative fetch sizes to support some non-standard
    // MySQL feature, where Integer.MIN_VALUE is used
    if (size != 0) {
      if (log.isDebugEnabled()) log.debug("Setting fetch size", size);

      ctx.statement().setFetchSize(size);
    }

    // [#1854] Set the max number of rows for this result query
    if (maxRows != 0) {
      ctx.statement().setMaxRows(maxRows);
    }
  }
Exemplo n.º 2
0
  @Override
  protected final int execute(ExecuteContext ctx, ExecuteListener listener) throws SQLException {
    Connection connection = ctx.getConnection();
    boolean autoCommit = false;

    // [#706] Postgres requires two separate queries running in the same
    // transaction to be executed when fetching refcursor types
    if (ctx.getDialect() == SQLDialect.POSTGRES && isSelectingRefCursor()) {
      autoCommit = connection.getAutoCommit();

      if (autoCommit) {
        if (log.isDebugEnabled()) log.debug("Unsetting auto-commit", false);

        connection.setAutoCommit(false);
      }
    }

    try {
      listener.executeStart(ctx);

      // JTDS doesn't seem to implement PreparedStatement.execute()
      // correctly, at least not for sp_help
      if (ctx.getDialect() == ASE) {
        ctx.resultSet(ctx.statement().executeQuery());
      }

      // [#1232] Avoid executeQuery() in order to handle queries that may
      // not return a ResultSet, e.g. SQLite's pragma foreign_key_list(table)
      else if (ctx.statement().execute()) {
        ctx.resultSet(ctx.statement().getResultSet());
      }

      listener.executeEnd(ctx);

      // Fetch a single result set
      if (!many) {
        if (ctx.resultSet() != null) {
          FieldList fields = new FieldList(getFields(ctx.resultSet().getMetaData()));
          cursor = new CursorImpl<R>(ctx, listener, fields, getRecordType());

          if (!lazy) {
            result = cursor.fetch();
            cursor = null;
          }
        } else {
          result = new ResultImpl<R>(ctx, new FieldList());
        }
      }

      // Fetch several result sets
      else {
        results = new ArrayList<Result<Record>>();
        boolean anyResults = false;

        while (ctx.resultSet() != null) {
          anyResults = true;

          FieldProvider fields = new MetaDataFieldProvider(ctx, ctx.resultSet().getMetaData());
          Cursor<Record> c = new CursorImpl<Record>(ctx, listener, fields, true);
          results.add(c.fetch());

          if (ctx.statement().getMoreResults()) {
            ctx.resultSet(ctx.statement().getResultSet());
          } else {
            ctx.resultSet(null);
          }
        }

        // Call this only when there was at least one ResultSet.
        // Otherwise, this call is not supported by ojdbc...
        if (anyResults) {
          ctx.statement().getMoreResults(Statement.CLOSE_ALL_RESULTS);
        }

        ctx.statement().close();
      }
    } finally {
      if (autoCommit) {
        if (log.isDebugEnabled()) log.debug("Resetting auto-commit", autoCommit);

        connection.setAutoCommit(autoCommit);
      }
    }

    return result != null ? result.size() : 0;
  }
Exemplo n.º 3
0
  @SuppressWarnings("unchecked")
  public static <T> T getFromStatement(ExecuteContext ctx, Class<? extends T> type, int index)
      throws SQLException {
    CallableStatement stmt = (CallableStatement) ctx.statement();

    if (type == Blob.class) {
      return (T) stmt.getBlob(index);
    } else if (type == Boolean.class) {
      return (T) checkWasNull(stmt, Boolean.valueOf(stmt.getBoolean(index)));
    } else if (type == BigInteger.class) {
      BigDecimal result = stmt.getBigDecimal(index);
      return (T) (result == null ? null : result.toBigInteger());
    } else if (type == BigDecimal.class) {
      return (T) stmt.getBigDecimal(index);
    } else if (type == Byte.class) {
      return (T) checkWasNull(stmt, Byte.valueOf(stmt.getByte(index)));
    } else if (type == byte[].class) {
      return (T) stmt.getBytes(index);
    } else if (type == Clob.class) {
      return (T) stmt.getClob(index);
    } else if (type == Date.class) {
      return (T) stmt.getDate(index);
    } else if (type == Double.class) {
      return (T) checkWasNull(stmt, Double.valueOf(stmt.getDouble(index)));
    } else if (type == Float.class) {
      return (T) checkWasNull(stmt, Float.valueOf(stmt.getFloat(index)));
    } else if (type == Integer.class) {
      return (T) checkWasNull(stmt, Integer.valueOf(stmt.getInt(index)));
    } else if (type == Long.class) {
      return (T) checkWasNull(stmt, Long.valueOf(stmt.getLong(index)));
    } else if (type == Short.class) {
      return (T) checkWasNull(stmt, Short.valueOf(stmt.getShort(index)));
    } else if (type == String.class) {
      return (T) stmt.getString(index);
    } else if (type == Time.class) {
      return (T) stmt.getTime(index);
    } else if (type == Timestamp.class) {
      return (T) stmt.getTimestamp(index);
    } else if (type == YearToMonth.class) {
      if (ctx.getDialect() == POSTGRES) {
        Object object = stmt.getObject(index);
        return (T) (object == null ? null : PostgresUtils.toYearToMonth(object));
      } else {
        String string = stmt.getString(index);
        return (T) (string == null ? null : YearToMonth.valueOf(string));
      }
    } else if (type == DayToSecond.class) {
      if (ctx.getDialect() == POSTGRES) {
        Object object = stmt.getObject(index);
        return (T) (object == null ? null : PostgresUtils.toDayToSecond(object));
      } else {
        String string = stmt.getString(index);
        return (T) (string == null ? null : DayToSecond.valueOf(string));
      }
    } else if (type == UByte.class) {
      String string = stmt.getString(index);
      return (T) (string == null ? null : UByte.valueOf(string));
    } else if (type == UShort.class) {
      String string = stmt.getString(index);
      return (T) (string == null ? null : UShort.valueOf(string));
    } else if (type == UInteger.class) {
      String string = stmt.getString(index);
      return (T) (string == null ? null : UInteger.valueOf(string));
    } else if (type == ULong.class) {
      String string = stmt.getString(index);
      return (T) (string == null ? null : ULong.valueOf(string));
    }

    // The type byte[] is handled earlier. byte[][] can be handled here
    else if (type.isArray()) {
      return (T) convertArray(stmt.getObject(index), (Class<? extends Object[]>) type);
    } else if (ArrayRecord.class.isAssignableFrom(type)) {
      return (T) getArrayRecord(ctx, stmt.getArray(index), (Class<? extends ArrayRecord<?>>) type);
    } else if (EnumType.class.isAssignableFrom(type)) {
      return getEnumType(type, stmt.getString(index));
    } else if (MasterDataType.class.isAssignableFrom(type)) {
      return (T) getMasterDataType(type, stmt.getString(index));
    } else if (UDTRecord.class.isAssignableFrom(type)) {
      switch (ctx.getDialect()) {
        case POSTGRES:
          return (T) pgNewUDTRecord(type, stmt.getObject(index));
      }

      return (T) stmt.getObject(index, DataTypes.udtRecords());
    } else if (Result.class.isAssignableFrom(type)) {
      ResultSet nested = (ResultSet) stmt.getObject(index);
      return (T) getNewFactory(ctx).fetch(nested);
    } else {
      return (T) stmt.getObject(index);
    }
  }
Exemplo n.º 4
0
  @SuppressWarnings("unchecked")
  private static <T> T getFromResultSet(ExecuteContext ctx, Class<? extends T> type, int index)
      throws SQLException {

    ResultSet rs = ctx.resultSet();

    if (type == Blob.class) {
      return (T) rs.getBlob(index);
    } else if (type == Boolean.class) {
      return (T) checkWasNull(rs, Boolean.valueOf(rs.getBoolean(index)));
    } else if (type == BigInteger.class) {
      // The SQLite JDBC driver doesn't support BigDecimals
      if (ctx.getDialect() == SQLDialect.SQLITE) {
        return Convert.convert(rs.getString(index), (Class<? extends T>) BigInteger.class);
      } else {
        BigDecimal result = rs.getBigDecimal(index);
        return (T) (result == null ? null : result.toBigInteger());
      }
    } else if (type == BigDecimal.class) {
      // The SQLite JDBC driver doesn't support BigDecimals
      if (ctx.getDialect() == SQLDialect.SQLITE) {
        return Convert.convert(rs.getString(index), (Class<? extends T>) BigDecimal.class);
      } else {
        return (T) rs.getBigDecimal(index);
      }
    } else if (type == Byte.class) {
      return (T) checkWasNull(rs, Byte.valueOf(rs.getByte(index)));
    } else if (type == byte[].class) {
      return (T) rs.getBytes(index);
    } else if (type == Clob.class) {
      return (T) rs.getClob(index);
    } else if (type == Date.class) {
      return (T) getDate(ctx.getDialect(), rs, index);
    } else if (type == Double.class) {
      return (T) checkWasNull(rs, Double.valueOf(rs.getDouble(index)));
    } else if (type == Float.class) {
      return (T) checkWasNull(rs, Float.valueOf(rs.getFloat(index)));
    } else if (type == Integer.class) {
      return (T) checkWasNull(rs, Integer.valueOf(rs.getInt(index)));
    } else if (type == Long.class) {
      return (T) checkWasNull(rs, Long.valueOf(rs.getLong(index)));
    } else if (type == Short.class) {
      return (T) checkWasNull(rs, Short.valueOf(rs.getShort(index)));
    } else if (type == String.class) {
      return (T) rs.getString(index);
    } else if (type == Time.class) {
      return (T) getTime(ctx.getDialect(), rs, index);
    } else if (type == Timestamp.class) {
      return (T) getTimestamp(ctx.getDialect(), rs, index);
    } else if (type == YearToMonth.class) {
      if (ctx.getDialect() == POSTGRES) {
        Object object = rs.getObject(index);
        return (T) (object == null ? null : PostgresUtils.toYearToMonth(object));
      } else {
        String string = rs.getString(index);
        return (T) (string == null ? null : YearToMonth.valueOf(string));
      }
    } else if (type == DayToSecond.class) {
      if (ctx.getDialect() == POSTGRES) {
        Object object = rs.getObject(index);
        return (T) (object == null ? null : PostgresUtils.toDayToSecond(object));
      } else {
        String string = rs.getString(index);
        return (T) (string == null ? null : DayToSecond.valueOf(string));
      }
    } else if (type == UByte.class) {
      String string = rs.getString(index);
      return (T) (string == null ? null : UByte.valueOf(string));
    } else if (type == UShort.class) {
      String string = rs.getString(index);
      return (T) (string == null ? null : UShort.valueOf(string));
    } else if (type == UInteger.class) {
      String string = rs.getString(index);
      return (T) (string == null ? null : UInteger.valueOf(string));
    } else if (type == ULong.class) {
      String string = rs.getString(index);
      return (T) (string == null ? null : ULong.valueOf(string));
    }

    // The type byte[] is handled earlier. byte[][] can be handled here
    else if (type.isArray()) {
      switch (ctx.getDialect()) {
        case POSTGRES:
          {
            return pgGetArray(ctx, type, index);
          }

        default:
          // Note: due to a HSQLDB bug, it is not recommended to call rs.getObject() here:
          // See https://sourceforge.net/tracker/?func=detail&aid=3181365&group_id=23316&atid=378131
          return (T) convertArray(rs.getArray(index), (Class<? extends Object[]>) type);
      }
    } else if (ArrayRecord.class.isAssignableFrom(type)) {
      return (T) getArrayRecord(ctx, rs.getArray(index), (Class<? extends ArrayRecord<?>>) type);
    } else if (EnumType.class.isAssignableFrom(type)) {
      return getEnumType(type, rs.getString(index));
    } else if (MasterDataType.class.isAssignableFrom(type)) {
      return (T) getMasterDataType(type, rs.getObject(index));
    } else if (UDTRecord.class.isAssignableFrom(type)) {
      switch (ctx.getDialect()) {
        case POSTGRES:
          return (T) pgNewUDTRecord(type, rs.getObject(index));
      }

      return (T) rs.getObject(index, DataTypes.udtRecords());
    } else if (Result.class.isAssignableFrom(type)) {
      ResultSet nested = (ResultSet) rs.getObject(index);
      return (T) getNewFactory(ctx).fetch(nested);
    } else {
      return (T) rs.getObject(index);
    }
  }