Method _g_create

tables/array.py:198–241

Save a new array in file.

(self)

        )

    def _g_create(self) -> int:
        """Save a new array in file."""
        self._v_version = obversion
        try:
            # `Leaf._g_post_init_hook()` should be setting the flavor on disk.
            self._flavor = flavor = flavor_of(self._obj)
            nparr = array_as_internal(self._obj, flavor)
        except Exception:  # XXX
            # Problems converting data. Close the node and re-raise exception.
            self.close(flush=0)
            raise

        # Raise an error in case of unsupported object
        if nparr.dtype.kind in ["V", "U", "O"]:  # in void, unicode, object
            raise TypeError(
                "Array objects cannot currently deal with void, "
                "unicode or object arrays"
            )

        # Decrease the number of references to the object
        self._obj = None

        # Fix the byteorder of data
        nparr = self._g_fix_byteorder_data(nparr, nparr.dtype.byteorder)

        # Create the array on-disk
        try:
            # ``self._v_objectid`` needs to be set because would be
            # needed for setting attributes in some descendants later
            # on
            self._v_objectid, self.shape, self.atom = self._create_array(
                nparr, self._v_new_title, self.atom
            )
        except Exception:  # XXX
            # Problems creating the Array on disk. Close node and re-raise.
            self.close(flush=0)
            raise

        # Compute the optimal buffer size
        self.nrowsinbuf = self._calc_nrowsinbuf()
        # Arrays don't have chunkshapes (so, set it to None)
        self._v_chunkshape = None

        return self._v_objectid

    def _g_open(self) -> int:
        """Get the metadata info for an array in file."""