+14Hi, I would like to merge some blob data in an attribute based on if it shares the same id, the merge also needs to happen in the correct order and I have another field with that order. Does anyone know how I would go about this. The data does not have any geometries.
Thank you for your help in advance.
+14I try to use the aggregator but that turns the blob into a string and the data type changes. Anything I can do to get round this?
Thank you
+14I tried instead to join the blob content in python, merging then the shape set is the same. This works for 1 feature then stops. Any idea what could be wrong with my python such that it doesnt iterate through each shape set. Thank you
import fme
import fmeobjects
class FeatureProcessor(object):
def __init__(self):
self.attribute_list = []
def input(self,feature):
attribute_list = processFeature(self,feature)
def close(self):
shape_vec_bytes=b''
previous_id = 0
attribute_list_b = []
for shape_set_id1,byte_data1 in self.attribute_list:
if shape_set_id1 == previous_id:
shape_vec_bytes = shape_vec_bytes + byte_data1
previous_id = shape_set_id1
else:
shape_vec_bytes = byte_data1
previous_id = shape_set_id1
attribute_list_b.append((shape_set_id1,shape_vec_bytes))
for shape_set_id2,shape_vec_bytes2 in attribute_list_b:
newFeature = fmeobjects.FMEFeature()
newFeature.setAttribute('gsnv_blob_data', shape_vec_bytes2)
newFeature.setAttribute('shape_set_id', shape_set_id2)
self.pyoutput(newFeature)
def processFeature(self,feature):
byte_data = feature.getAttribute('GSNV_BLOB_DATA')
shape_set_id = feature.getAttribute('SHAPE_SET_ID')
try:
self.attribute_list.append((shape_set_id,byte_data))
except ValueError:
print(feature.getAttribute('SHAPE_SET_ID'))