def new_tde(self, data):
# Step 1: Create the Extract File
dataExtract = Extract(self.tde_name)
if dataExtract.hasTable('Extract'):
return print("tde already exist use another name")
# Step 2: Create the table definition
cols = data.columns.tolist()
dataSchema = TableDefinition()
for col in cols:
dataSchema.addColumn(col, Type.UNICODE_STRING)
# Step 3: Create a table in the image of the table definition
table = dataExtract.addTable('Extract', dataSchema)
# Step 4: Create rows and insert them one by one
newRow = Row(dataSchema)
cols = data.columns.tolist()
for i in range(0, len(data)):
for col in cols:
col_index = cols.index(col)
newRow.setString(col_index, data[col][i])
table.insert(newRow)
dataExtract.close()
# Step 5: Close the tde
dataExtract.close()
def createOrOpenExtract(filename, useSpatial):
try:
# Create Extract Object
# (NOTE: The Extract constructor opens an existing extract with the
# given filename if one exists or creates a new extract with the given
# filename if one does not)
extract = Extract(filename)
# Define Table Schema (If we are creating a new extract)
# (NOTE: In Tableau Data Engine, all tables must be named 'Extract')
if (not extract.hasTable('Extract')):
schema = TableDefinition()
schema.setDefaultCollation(Collation.EN_GB)
schema.addColumn('Purchased', Type.DATETIME)
schema.addColumn('Product', Type.CHAR_STRING)
schema.addColumn('uProduct', Type.UNICODE_STRING)
schema.addColumn('Price', Type.DOUBLE)
schema.addColumn('Quantity', Type.INTEGER)
schema.addColumn('Taxed', Type.BOOLEAN)
schema.addColumn('Expiration Date', Type.DATE)
schema.addColumnWithCollation('Produkt', Type.CHAR_STRING,
Collation.DE)
if (useSpatial):
schema.addColumn('Destination', Type.SPATIAL)
table = extract.addTable('Extract', schema)
if (table == None):
print 'A fatal error occurred while creating the table:\nExiting now\n.'
exit(-1)
except TableauException, e:
print 'A fatal error occurred while creating the new extract:\n', e, '\nExiting now.'
exit(-1)
class TDEExport(object):
@staticmethod
def make_table_definition(schema):
table_def = TableDefinition()
table_def.setDefaultCollation(Collation.EN_GB)
for col in schema:
table_def.addColumn(col['name'], typeMap.get(col["type"],Type.UNICODE_STRING))
return table_def
def __init__(self, tde_file_path, input_schema):
self.tde_file_path = tde_file_path
self.output_path = os.path.dirname(self.tde_file_path)
self.input_schema = input_schema
self.errors = 0
self.nrows = 0
print "Writing TDE file: %s" % self.tde_file_path
ExtractAPI.initialize()
self.extract = Extract(self.tde_file_path)
assert(not self.extract.hasTable('Extract'))
self.table_def = TDEExport.make_table_definition(self.input_schema)
self.table = self.extract.addTable('Extract', self.table_def)
def __enter__(self):
return self
def __exit__(self, type, value, tb):
self.close();
def close(self):
self.extract.close()
ExtractAPI.cleanup()
if self.errors > 0:
print "Encountered %d errors" % self.errors
def insert_array_row(self, input_row):
# Work around bug in DSS 3.1.0 API for single-column datasets
if len(input_row) == 0 and len(self.input_schema) == 1:
input_row = [u'']
nb_cols = len(self.input_schema)
output_row = Row(self.table_def)
for col_no in range(nb_cols):
col = self.input_schema[col_no]
data = input_row[col_no]
try:
fieldSetterMap[col['type']](output_row, col_no, data)
except Exception, e:
self.errors += 1
if self.errors < 100 or (self.errors < 10000 and self.errors % 100 == 0) or (self.errors % 1000 ==0):
try:
print "[err #%s] Failed setting: col=%s type=%s val=%s err=%s" % (self.errors, col["name"], col["type"], data, e)
except Exception, e2:
print "[err #%s] Failed setting: col=%s type=%s val=NON_PRINTED err=%s" % (self.errors, col["name"], col["type"],e)
class TDEExport(object):
@staticmethod
def make_table_definition(schema):
table_def = TableDefinition()
table_def.setDefaultCollation(Collation.EN_GB)
for col in schema:
table_def.addColumn(col['name'], typeMap.get(col["type"],Type.UNICODE_STRING))
return table_def
def __init__(self, tde_file_path, input_schema):
self.tde_file_path = tde_file_path
self.output_path = os.path.dirname(self.tde_file_path)
self.input_schema = input_schema
self.errors = 0
self.nrows = 0
print "Writing TDE file: %s" % self.tde_file_path
ExtractAPI.initialize()
self.extract = Extract(self.tde_file_path)
assert(not self.extract.hasTable('Extract'))
self.table_def = TDEExport.make_table_definition(self.input_schema)
self.table = self.extract.addTable('Extract', self.table_def)
def __enter__(self):
return self
def __exit__(self, type, value, tb):
self.close();
def close(self):
self.extract.close()
ExtractAPI.cleanup()
if self.errors > 0:
print "Encountered %d errors" % self.errors
def insert_array_row(self, input_row):
# Work around bug in DSS 3.1.0 API for single-column datasets
if len(input_row) == 0 and len(self.input_schema) == 1:
input_row = [u'']
nb_cols = len(self.input_schema)
output_row = Row(self.table_def)
for col_no in range(nb_cols):
col = self.input_schema[col_no]
data = input_row[col_no]
try:
fieldSetterMap[col['type']](output_row, col_no, data)
except Exception, e:
self.errors += 1
if self.errors < 100 or (self.errors < 10000 and self.errors % 100 == 0) or (self.errors % 1000 ==0):
try:
print "[err #%s] Failed setting: col=%s type=%s val=%s err=%s" % (self.errors, col["name"], col["type"], data, e)
except Exception, e2:
print "[err #%s] Failed setting: col=%s type=%s val=NON_PRINTED err=%s" % (self.errors, col["name"], col["type"],e)
class TDEExport(object):
@staticmethod
def convert_type(type):
return typeMap.get(type,Type.UNICODE_STRING)
@staticmethod
def make_table_definition(schema):
table_def = TableDefinition()
table_def.setDefaultCollation(Collation.EN_GB)
for col in schema:
table_def.addColumn(col['name'], TDEExport.convert_type(col['type']))
return table_def
def __init__(self, tde_file_path, input_schema):
self.tde_file_path = tde_file_path
self.output_path = os.path.dirname(self.tde_file_path)
self.input_schema = input_schema
print "Writing TDE file: %s" % self.tde_file_path
ExtractAPI.initialize()
self.extract = Extract(self.tde_file_path)
assert(not self.extract.hasTable('Extract'))
self.table_def = TDEExport.make_table_definition(self.input_schema)
self.table = self.extract.addTable('Extract', self.table_def)
def __enter__(self):
return self
def __exit__(self, type, value, tb):
self.close();
def close(self):
self.extract.close()
ExtractAPI.cleanup()
def insert_array_row(self, input_row):
# Work around bug in DSS 3.1.0 API for single-column datasets
if len(input_row) == 0 and len(self.input_schema) == 1:
input_row = [u'']
nb_cols = len(self.input_schema)
output_row = Row(self.table_def)
for col_no in range(nb_cols):
col = self.input_schema[col_no]
data = input_row[col_no]
try:
fieldSetterMap[col['type']](output_row, col_no, data)
except Exception, e:
print "Failed setting field %s to value %s: %s" % (col["name"], data, e)
pass
self.table.insert(output_row)
def writeTableToTDE(pgFields, pgData, extractLocation):
print("writing table to {0}").format(extractLocation)
# 1. initialize a new extract
ExtractAPI.initialize()
# 2. Create a table definition
new_extract = Extract(extractLocation)
# 3. Add column definitions to the table definition
table_definition = TableDefinition()
for i in range(0, len(pgFields)):
table_definition.addColumn(pgFields[i][0], pgFields[i][1])
# 4. Initialize a new table in the extract
# a. check if the table already exists
# Only add table if it doesn't already exist
if (new_extract.hasTable('Extract') == False):
new_table = new_extract.addTable('Extract', table_definition)
else:
new_table = new_extract.openTable('Extract')
# 5. Create a new row
new_row = Row(
table_definition) # Pass the table definition to the constructor
# 6. Populate each new row
numberRecords = len(pgData)
for i in range(0, numberRecords):
# Note that this doesn't cover all possible TDE data types
for j in range(0, len(pgFields)):
if pgFields[j][1] == Type.INTEGER:
new_row.setInteger(j, pgData[i][j])
elif pgFields[j][1] == Type.UNICODE_STRING:
new_row.setString(j, pgData[i][j])
elif pgFields[j][1] == Type.SPATIAL:
new_row.setSpatial(j, pgData[i][j])
elif pgFields[j][i] == Type.BOOLEAN:
new_row.setBoolean(j, pgData[i][j])
elif pgFields[j][i] == Type.DOUBLE:
new_row.setDouble(j, pgData[j][i])
new_table.insert(new_row) # Add the new row to the table
# 7. Save the table and extract
new_extract.close()
# 8. Release the extract API
ExtractAPI.cleanup()
return
def to_tableau(self, path, table_name='Extract', add_index=False):
"""
Converts a Pandas DataFrame to a Tableau .tde file
@param path = path to write file
@param table_name = name of the table in the extract
@param add_index = adds incrementing integer index before dataframe columns
"""
# Delete dataextract log and hyper_db temp files if already exists
files = (glob('DataExtract*.log') + glob('hyper_db_*') + [
os.path.dirname(path) + '/debug.log', './DataExtract.log',
'./debug.log'
])
for file in files:
if os.path.isfile(file):
os.remove(file)
# Create Extract and Table
ExtractAPI.initialize()
new_extract = Extract(path)
if not new_extract.hasTable(table_name):
print(
'Table \'{}\' does not exist in extract {}, creating.'.format(
table_name, path))
self.set_table_structure(new_extract, table_name, add_index)
new_table = new_extract.openTable(table_name)
table_def = new_table.getTableDefinition()
# Set Column values
self.set_column_values(new_table, table_def, add_index)
# Close extract
new_extract.close()
ExtractAPI.cleanup()
###Setting Tableau recognized data types###
for i in column_types:
if i is numpy.int64:
column_headers_types.append(Type.INTEGER)
elif i is numpy.float64:
column_headers_types.append(Type.DOUBLE)
elif i is pd.Timestamp:
column_headers_types.append(Type.DATETIME)
else:
column_headers_types.append(Type.UNICODE_STRING)
###Getting the existing table schema for incremental refresh###
if incremental_refresh == 1:
dataExtract = Extract(extract_name)
if dataExtract.hasTable('Extract'):
table = dataExtract.openTable('Extract')
dataSchema = table.getTableDefinition()
else:
###Removing extract if it already exists (for full refresh)###
try:
cwd = os.getcwd()
for f in os.listdir(cwd):
if re.search(extract_name, f):
os.remove(os.path.join(cwd, f))
except OSError, e:
pass
###Initializng the Extract API, and applying the schema to the table###
ExtractAPI.initialize()
createExtract = Extract("/Users/jlin/Desktop/data_stuff/predict_data_Extract.tde")
for i in combined_data.columns:
if i in ['Contract Execute','Contract Sent to Site','Essential Doc','IRB','Ip Release']:
combined_data[i] = pd.to_datetime(combined_data[i],coerce=True)
#combined_data = combined_data.drop(['Contract Execute','Contract Sent to Site','Essential Doc','IRB','Ip Release'],1)
if createExtract.hasTable('Extract'):
table = createExtract.openTable('Extract')
tabledef = table.getTableDefinition()
else:
tabledef = TableDefinition()
for i in combined_data.columns :
#print combined_data[i].dtype
if str(combined_data[i].dtype) == "int64":
tabledef.addColumn(i,Types.Type.INTEGER)
if str(combined_data[i].dtype) == "object":
tabledef.addColumn(i,Types.Type.CHAR_STRING)
if str(combined_data[i].dtype) == "datetime64[ns]":
tabledef.addColumn(i,Types.Type.DATE)
if str(combined_data[i].dtype) == "float64":
# 3. Add column definitions to the table definition
table_definition = TableDefinition()
table_definition.addColumn('route', Type.UNICODE_STRING) # column 0
table_definition.addColumn('latitude', Type.DOUBLE)
table_definition.addColumn('longitude', Type.DOUBLE)
table_definition.addColumn('point_number', Type.INTEGER)
table_definition.addColumn('distance_km', Type.DOUBLE)
table_definition.addColumn('FlightNumber', Type.UNICODE_STRING)
table_definition.addColumn('DepartureTime', Type.UNICODE_STRING)
table_definition.addColumn('DepartureTimeFromMidnight', Type.UNICODE_STRING)
table_definition.addColumn('SegMinFromMidnight', Type.INTEGER)
table_definition.addColumn('FlightTime', Type.INTEGER)
table_definition.addColumn('SegTimeFromMidnight', Type.UNICODE_STRING)
# 4. Initialize a new table in the extract
if (new_extract.hasTable('Extract') == False):
new_table = new_extract.addTable('Extract', table_definition)
else:
new_table = new_extract.openTable('Extract')
# 5. Create a new row
new_row = Row(table_definition) # Pass the table definition to the constructor
# 6. walk through the origin/destination data from CSV, write each path to TDE
with open(csvLocation, 'rb') as csvfile:
csvreader = csv.reader(csvfile, delimiter='|')
next(csvreader) # skip header
for row in csvreader:
def to_tde(dataset, tde_mode, tde_name):
if tde_mode == 'new':
# Step 1: Create the Extract File
dataExtract = Extract(tde_name)
if dataExtract.hasTable('Extract'):
return print("tde already exist use another name")
# Step 2: Create the table definition
dataSchema = TableDefinition()
dataSchema.addColumn('Station', Type.UNICODE_STRING)
dataSchema.addColumn('Time', Type.UNICODE_STRING)
dataSchema.addColumn('Date', Type.DATE)
dataSchema.addColumn('all', Type.DOUBLE)
dataSchema.addColumn('n7', Type.DOUBLE)
dataSchema.addColumn('n8', Type.DOUBLE)
dataSchema.addColumn('y_serries', Type.DOUBLE)
# Step 3: Create a table in the image of the table definition
table = dataExtract.addTable('Extract', dataSchema)
# Step 4: Create rows and insert them one by one
newRow = Row(dataSchema)
for i in range(0, len(dataset)):
print(i)
newRow.setString (0, dataset['Station'][i])
newRow.setString (1, dataset['Time'][i])
newRow.setDate (2, dataset['Date'][i].year, dataset['Date'][i].month, dataset['Date'][i].day)
newRow.setDouble (3, dataset['all'][i])
newRow.setDouble (4, dataset['n7'][i])
newRow.setDouble (5, dataset['n8'][i])
newRow.setDouble (6, dataset['y_serries'][i])
table.insert(newRow)
# Step 5: Close the tde
dataExtract.close()
elif tde_mode == 'append':
# Step 1: Import the Extract File
preExtract = Extract(tde_name)
# Step 2: Open existing table
table = preExtract.openTable('Extract')
# Step 3: Import the table definition
tableDef = table.getTableDefinition()
# Step 4: Create rows and insert them one by one
newRow = Row(tableDef)
for i in range(0, len(dataset)):
print(i)
newRow.setString (0, dataset['Station'][i])
newRow.setString (1, dataset['Time'][i])
newRow.setDate (2, dataset['Date'][i].year, dataset['Date'][i].month, dataset['Date'][i].day)
newRow.setDouble (3, dataset['all'][i])
newRow.setDouble (4, dataset['n7'][i])
newRow.setDouble (5, dataset['n8'][i])
newRow.setDouble (6, dataset['y_serries'][i])
table.insert(newRow)
# Step 5: Close the extract
preExtract.close()
def heatmapToTDE(heatmap, extent, smoothing, extractLocation):
xLen = len(heatmap)
yLen = len(heatmap[0])
xRange = abs(extent[0] - extent[1])
yRange = abs(extent[2] - extent[3])
xMin = min(extent[0], extent[1])
yMin = min(extent[2], extent[3])
xIncrement = xRange / yLen
yIncrement = yRange / xLen
# 1. initialize a new extract
ExtractAPI.initialize()
# 2. Create a table definition
new_extract = Extract(extractLocation)
# 3. Add column definitions to the table definition
table_definition = TableDefinition()
table_definition.addColumn('ROW', Type.UNICODE_STRING) # column 0
table_definition.addColumn('COL', Type.UNICODE_STRING) # column 1
table_definition.addColumn('VALUE', Type.DOUBLE) # column 2
table_definition.addColumn('ID', Type.UNICODE_STRING)
table_definition.addColumn('CellCount', Type.INTEGER)
table_definition.addColumn('Smoothing', Type.DOUBLE)
table_definition.addColumn('GEOM', Type.SPATIAL)
# 4. Initialize a new table in the extract
# a. check if the table already exists
# Only add table if it doesn't already exist
if (new_extract.hasTable('Extract') == False):
new_table = new_extract.addTable('Extract', table_definition)
else:
new_table = new_extract.openTable('Extract')
# 5. Create a new row
new_row = Row(table_definition) # Pass the table definition to the constructor
# 6. Populate each new row
yCoord = yMin
for i in range(0, xLen):
yCoord += yIncrement
xCoord = xMin
for j in range(0, yLen):
xCoord += xIncrement
cellWkt = getFourCorners([xCoord, yCoord], xIncrement, yIncrement)
new_row.setString(0, str(i)) # ROW
new_row.setString(1, str(j)) # COL
new_row.setDouble(2, heatmap[i][j]) # VAL
new_row.setString(3, str(i) + '-' + str(j)) # id
new_row.setInteger(4, len(heatmap[0])) # cell count
new_row.setDouble(5, smoothing) # smoothing
new_row.setSpatial(6, cellWkt) # WKT spatial
new_table.insert(new_row) # Add the new row to the table
# 7. Save the table and extract
new_extract.close()
# 8. Release the extract API
ExtractAPI.cleanup()
return
def new_tde(self):
dataExtract = Extract(self.tde_name)
if dataExtract.hasTable('Extract'):
return print("tde already exist use another name")
return dataExtract
