a Kcfy"@sddlmZmZddlmZddlmZmZddlm Z m Z ddl m Z ddl mZddlmZddlmZdd lmZdd lmZdd lmZdd lmZdd lmZmZGdddeZdS))byrefc_double)GDALBase)Envelope OGREnvelope) GDALException SRSException)Feature) OGRFieldTypes) OGRGeometry) OGRGeomType)dsgeom)srs)SpatialReference) force_bytes force_strc@seZdZdZddZddZddZdd Zd d Zd d Z e ddZ e ddZ e d/ddZ e ddZe ddZe ddZe ddZe ddZe dd Ze d!d"Zd#d$Zd%d&Ze eeZd'd(Zd0d*d+Zd,d-Zd.S)1Layerza A class that wraps an OGR Layer, needs to be instantiated from a DataSource object. cCs6|s td||_||_t|j|_|d|_dS)a7 Initialize on an OGR C pointer to the Layer and the `DataSource` object that owns this layer. The `DataSource` object is required so that a reference to it is kept with this Layer. This prevents garbage collection of the `DataSource` while this Layer is still active. z*Cannot create Layer, invalid pointer givens RandomReadN) rptr_dscapiZget_layer_defn_ptr_ldefntest_capability _random_read)selfZ layer_ptrr rZ/home/httpd/docs/test/DocsMgr/lib/python3.9/site-packages/django/contrib/gis/gdal/layer.py__init__s zLayer.__init__csft|tr$|dkrtd|St|trZ|j\}}}fddt|||DStddS)z'Get the Feature at the specified index.rz/Negative indices are not allowed on OGR Layers.csg|]}|qSr) _make_feature).0fidrrr 6z%Layer.__getitem__..z>Integers and slices may only be used when indexing OGR Layers.N) isinstanceint IndexErrorr sliceindicesnum_featrange TypeError)rindexstartstopZstriderr#r __getitem__*s   zLayer.__getitem__ccs4t|jt|jD]}tt|j|VqdS)z'Iterate over each Feature in the Layer.N)rZ reset_readingrr,r+r Zget_next_feature)rirrr__iter__<s zLayer.__iter__cCs|jS)z%The length is the number of features.)r+r#rrr__len__Csz Layer.__len__cCs|jS)zThe string name of the layer.)namer#rrr__str__Gsz Layer.__str__cCs^|jr2ztt|j||WSty.YqN0n|D]}|j|kr6|Sq6td|dS)a. 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. zInvalid feature id: %s.N)rr rZ get_featurerrr"r()rZfeat_idfeatrrrr Ks   zLayer._make_featurecCs"t}t|jt|dt|S)z.Return the extent (an Envelope) of this layer.)rrZ get_extentrrr)renvrrrextentbsz Layer.extentcCst|j}t||jjddS)z1Return the name of this layer in the Data Source.TZ strings_only)rZ get_fd_namerrrencoding)rr5rrrr5is z Layer.namer8cCst|j|S)z+Return the number of features in the Layer.)rZget_feature_countr)rforcerrrr+oszLayer.num_featcCs t|jS)z)Return the number of fields in the Layer.)rZget_field_countrr#rrr num_fieldstszLayer.num_fieldscCstt|jS)z4Return the geometry type (OGRGeomType) of the Layer.)r rZget_fd_geom_typerr#rrr geom_typeyszLayer.geom_typecCs6zt|j}tt|WSty0YdS0dS)z0Return the Spatial Reference used in this Layer.N)rZ get_layer_srsrrsrs_apiZ clone_srsr)rrrrrr~s   z Layer.srscsfddtjDS)zt Return a list of string names corresponding to each of the Fields available in this Layer. c s.g|]&}tttj|jjddqS)Tr;)rrZget_field_nameget_field_defnrrr<r!r2r#rrr$s z Layer.fields..r,r>r#rr#rfieldss z Layer.fieldscsfddtjDS)z Return a list of the types of fields in this Layer. For example, return the list [OFTInteger, OFTReal, OFTString] for an OGR layer that has an integer, a floating-point, and string fields. c s$g|]}tttj|qSr)r rZget_field_typerArrBr#rrr$sz%Layer.field_types..rCr#rr#r field_typess zLayer.field_typescsfddtjDS)z;Return a list of the maximum field widths for the features.cs g|]}ttj|qSr)rZget_field_widthrArrBr#rrr$sz&Layer.field_widths..rCr#rr#r field_widthss zLayer.field_widthscsfddtjDS)z-Return the field precisions for the features.cs g|]}ttj|qSr)rZget_field_precisionrArrBr#rrr$sz*Layer.field_precisions..rCr#rr#rfield_precisionss zLayer.field_precisionscCs2zttt|jWSty,YdS0dS)N)r geom_apiZ clone_geomrZget_spatial_filterrrr#rrr_get_spatial_filters zLayer._get_spatial_filtercCst|trt|j|jnjt|ttfrft|dks>tdt t |\}}}}t |j||||n |dur~t|jdnt ddS)Nz/Spatial filter list/tuple must have 4 elements.zJSpatial filter must be either an OGRGeometry instance, a 4-tuple, or None.) r&r rZset_spatial_filterrtuplelistlen ValueErrormaprZset_spatial_filter_rectr-)rfilterZxminZyminZxmaxZymaxrrr_set_spatial_filters  zLayer._set_spatial_filtercs(|jvrtdfdd|DS)zg Return a list containing the given field name for every Feature in the Layer. zinvalid field name: %scsg|]}|qSr)getr!r7 field_namerrr$r%z$Layer.get_fields..)rDr)rrUrrTr get_fieldss  zLayer.get_fieldsFcs4|r"ddlmfdd|DSdd|DSdS)zb Return a list containing the OGRGeometry for every Feature in the Layer. r GEOSGeometrycsg|]}|jjqSr)rZwkbrSrWrrr$r%z#Layer.get_geoms..cSsg|] }|jqSrrrSrrrr$r%N)Zdjango.contrib.gis.geosrX)rZgeosrrWr get_geomss zLayer.get_geomscCstt|jt|S)ah Return a bool indicating whether the this Layer supports the given capability (a string). Valid capability strings include: 'RandomRead', 'SequentialWrite', 'RandomWrite', 'FastSpatialFilter', 'FastFeatureCount', 'FastGetExtent', 'CreateField', 'Transactions', 'DeleteFeature', and 'FastSetNextByIndex'. )boolrrrr)rZ capabilityrrrrszLayer.test_capabilityN)r8)F)__name__ __module__ __qualname____doc__rr1r3r4r6r propertyr:r5r+r>r?rrDrErFrGrIrQZspatial_filterrVrYrrrrrrsB            rN) ctypesrrZdjango.contrib.gis.gdal.baserZ django.contrib.gis.gdal.enveloperrZdjango.contrib.gis.gdal.errorrrZdjango.contrib.gis.gdal.featurer Zdjango.contrib.gis.gdal.fieldr Z"django.contrib.gis.gdal.geometriesr Z django.contrib.gis.gdal.geomtyper Z"django.contrib.gis.gdal.prototypesr rrrHrr@Zdjango.contrib.gis.gdal.srsrZdjango.utils.encodingrrrrrrrs