def addLayerToProject(self, name, destName=None):
'''
Adds a new layer to the current project based on a layer in a GeoServer catalog
It will create a new layer with a WFS or WCS connection, pointing to the specified GeoServer
layer. In the case of a vector layer, it will also fetch its associated style and set it
as the current style for the created QGIS layer
'''
layer = self.catalog.get_layer(name)
if layer is None:
raise Exception("A layer with the name '" + name +
"' was not found in the catalog")
resource = layer.resource
uri = uri_utils.layerUri(layer)
if resource.resource_type == "featureType":
qgslayer = QgsVectorLayer(uri, destName or resource.title, "WFS")
if not qgslayer.isValid():
raise Exception("Layer at %s is not a valid layer" % uri)
ok = True
try:
sld = layer.default_style.sld_body
sld = adaptGsToQgs(sld)
sldfile = utils.tempFilename("sld")
with open(sldfile, 'w') as f:
f.write(sld)
msg, ok = qgslayer.loadSldStyle(sldfile)
except Exception, e:
ok = False
QgsMapLayerRegistry.instance().addMapLayers([qgslayer])
addTrackedLayer(qgslayer, self.catalog.service_url)
if not ok:
raise Exception(
"Layer was added, but style could not be set (maybe GeoServer layer is missing default style)"
)
def publishLayer(self,
layer,
workspace=None,
overwrite=True,
name=None,
style=None):
'''
Publishes a QGIS layer.
It creates the corresponding store and the layer itself.
If a pre-upload hook is set, its runs it and publishes the resulting layer
layer: the layer to publish, whether as a QgsMapLayer object or its name in the QGIS TOC.
workspace: the workspace to publish to. USes the default workspace if not passed
or None
name: the name for the published layer. Uses the QGIS layer name if not passed
or None
style: the style to use from the ones in the catalog. Will upload the QGIS style if
not passed or None
'''
if isinstance(layer, basestring):
layer = layers.resolveLayer(layer)
addTrackedLayer(layer, self.catalog.service_url)
name = xmlNameFixUp(name) if name is not None \
else xmlNameFixUp(layer.name())
gslayer = self.catalog.get_layer(name)
if gslayer is not None and not overwrite:
return
sld = self.publishStyle(layer, overwrite,
name) if style is None else None
layer = self.preprocess(layer)
self.upload(layer, workspace, overwrite, name)
if sld is not None or style is not None:
#assign style to created store
publishing = self.catalog.get_layer(name)
publishing.default_style = style or self.catalog.get_style(name)
self.catalog.save(publishing)
def publishLayer (self, layer, workspace=None, overwrite=True, name=None, style=None):
'''
Publishes a QGIS layer.
It creates the corresponding store and the layer itself.
layer: the layer to publish, whether as a QgsMapLayer object or its name in the QGIS TOC.
workspace: the workspace to publish to. USes the default workspace if not passed
or None
name: the name for the published layer. Uses the QGIS layer name if not passed
or None
style: the style to use from the ones in the catalog. Will upload the QGIS style if
not passed or None
'''
if isinstance(layer, str):
layer = layers.resolveLayer(layer)
addTrackedLayer(layer, self.catalog.service_url)
name = xmlNameFixUp(name) if name is not None \
else xmlNameFixUp(layer.name())
gslayer = self.catalog.get_layer(name)
if gslayer is not None and not overwrite:
return
sld = self.publishStyle(layer, overwrite, name) if style is None else None
self.upload(layer, workspace, overwrite, name)
if sld is not None or style is not None:
#assign style to created store
publishing = self.catalog.get_layer(name)
publishing.default_style = style or self.catalog.get_styles(name)[0]
self.catalog.save(publishing)
def addLayerToProject(self, name, destName = None):
'''
Adds a new layer to the current project based on a layer in a GeoServer catalog
It will create a new layer with a WFS or WCS connection, pointing to the specified GeoServer
layer. In the case of a vector layer, it will also fetch its associated style and set it
as the current style for the created QGIS layer
'''
layer = self.catalog.get_layer(name)
if layer is None:
raise Exception ("A layer with the name '" + name + "' was not found in the catalog")
resource = layer.resource
uri = uri_utils.layerUri(layer)
QgsNetworkAccessManager.instance().cache().clear()
if resource.resource_type == "featureType":
qgslayer = QgsVectorLayer(uri, destName or resource.title, "WFS")
if not qgslayer.isValid():
raise Exception ("Layer at %s is not a valid layer" % uri)
ok = True
try:
sld = layer.default_style.sld_body.decode()
sld = adaptGsToQgs(str(sld))
sldfile = tempFilename("sld")
with open(sldfile, 'w') as f:
f.write(sld)
msg, ok = qgslayer.loadSldStyle(sldfile)
except Exception as e:
ok = False
QgsProject.instance().addMapLayers([qgslayer])
setUnits(qgslayer)
addTrackedLayer(qgslayer, self.catalog.service_url)
if not ok:
raise Exception ("Layer was added, but style could not be set (maybe GeoServer layer is missing default style)")
elif resource.resource_type == "coverage":
qgslayer = QgsRasterLayer(uri, destName or resource.title, "wcs" )
if not qgslayer.isValid():
raise Exception ("Layer at %s is not a valid layer" % uri)
QgsProject.instance().addMapLayers([qgslayer])
addTrackedLayer(qgslayer, self.catalog.service_url)
elif resource.resource_type == "wmsLayer":
qgslayer = QgsRasterLayer(uri, destName or resource.title, "wms")
if not qgslayer.isValid():
raise Exception ("Layer at %s is not a valid layer" % uri)
QgsProject.instance().addMapLayers([qgslayer])
addTrackedLayer(qgslayer, self.catalog.service_url)
else:
raise Exception("Cannot add layer. Unsupported layer type.")
f.write(sld)
msg, ok = qgslayer.loadSldStyle(sldfile)
except Exception, e:
ok = False
QgsMapLayerRegistry.instance().addMapLayers([qgslayer])
addTrackedLayer(qgslayer, self.catalog.service_url)
if not ok:
raise Exception(
"Layer was added, but style could not be set (maybe GeoServer layer is missing default style)"
)
elif resource.resource_type == "coverage":
qgslayer = QgsRasterLayer(uri, destName or resource.title, "wcs")
if not qgslayer.isValid():
raise Exception("Layer at %s is not a valid layer" % uri)
QgsMapLayerRegistry.instance().addMapLayers([qgslayer])
addTrackedLayer(qgslayer, self.catalog.service_url)
elif resource.resource_type == "wmsLayer":
qgslayer = QgsRasterLayer(uri, destName or resource.title, "wms")
if not qgslayer.isValid():
raise Exception("Layer at %s is not a valid layer" % uri)
QgsMapLayerRegistry.instance().addMapLayers([qgslayer])
addTrackedLayer(qgslayer, self.catalog.service_url)
else:
raise Exception("Cannot add layer. Unsupported layer type.")
def addGroupToProject(self, name):
group = self.catalog.get_layergroup(name)
if group is None:
raise Exception("A layer with the name '" + name +
"' was not found in the catalog")