Python error.OGRIndexError方法代碼示例

# 需要導入模塊: from django.contrib.gis.gdal import error [as 別名]
# 或者: from django.contrib.gis.gdal.error import OGRIndexError [as 別名]
def _make_feature(self, feat_id):
        """
        Helper routine for __getitem__ that constructs a Feature from the given
        Feature ID.  If the OGR Layer does not support random-access reading,
        then each feature of the layer will be incremented through until the
        a Feature is found matching the given feature ID.
        """
        if self._random_read:
            # If the Layer supports random reading, return.
            try:
                return Feature(capi.get_feature(self.ptr, feat_id), self)
            except OGRException:
                pass
        else:
            # Random access isn't supported, have to increment through
            # each feature until the given feature ID is encountered.
            for feat in self:
                if feat.fid == feat_id: return feat
        # Should have returned a Feature, raise an OGRIndexError.
        raise OGRIndexError('Invalid feature id: %s.' % feat_id)

    #### Layer properties #### 

# 需要導入模塊: from django.contrib.gis.gdal import error [as 別名]
# 或者: from django.contrib.gis.gdal.error import OGRIndexError [as 別名]
def __getitem__(self, index):
        """
        Gets the Field object at the specified index, which may be either
        an integer or the Field's string label.  Note that the Field object
        is not the field's _value_ -- use the `get` method instead to
        retrieve the value (e.g. an integer) instead of a Field instance.
        """
        if isinstance(index, six.string_types):
            i = self.index(index)
        else:
            if index < 0 or index > self.num_fields:
                raise OGRIndexError('index out of range')
            i = index
        return Field(self, i) 

# 需要導入模塊: from django.contrib.gis.gdal import error [as 別名]
# 或者: from django.contrib.gis.gdal.error import OGRIndexError [as 別名]
def index(self, field_name):
        "Returns the index of the given field name."
        i = capi.get_field_index(self.ptr, force_bytes(field_name))
        if i < 0:
            raise OGRIndexError('invalid OFT field name given: "%s"' % field_name)
        return i 

# 需要導入模塊: from django.contrib.gis.gdal import error [as 別名]
# 或者: from django.contrib.gis.gdal.error import OGRIndexError [as 別名]
def __getitem__(self, index):
        "Allows use of the index [] operator to get a layer at the index."
        if isinstance(index, six.string_types):
            l = capi.get_layer_by_name(self.ptr, force_bytes(index))
            if not l:
                raise OGRIndexError('invalid OGR Layer name given: "%s"' % index)
        elif isinstance(index, int):
            if index < 0 or index >= self.layer_count:
                raise OGRIndexError('index out of range')
            l = capi.get_layer(self._ptr, index)
        else:
            raise TypeError('Invalid index type: %s' % type(index))
        return Layer(l, self) 

# 需要導入模塊: from django.contrib.gis.gdal import error [as 別名]
# 或者: from django.contrib.gis.gdal.error import OGRIndexError [as 別名]
def __getitem__(self, index):
        "Allows use of the index [] operator to get a layer at the index."
        if isinstance(index, six.string_types):
            layer = capi.get_layer_by_name(self.ptr, force_bytes(index))
            if not layer:
                raise OGRIndexError('invalid OGR Layer name given: "%s"' % index)
        elif isinstance(index, int):
            if index < 0 or index >= self.layer_count:
                raise OGRIndexError('index out of range')
            layer = capi.get_layer(self._ptr, index)
        else:
            raise TypeError('Invalid index type: %s' % type(index))
        return Layer(layer, self)