python.hltResultMT Namespace Reference

Classes
class	EDMCollection

Functions
	get_collection_name (raw_data_words)
	get_collection_payload (raw_data_words)
	get_collections (rob, skip_payload=False)

Variables
	log = logging.getLogger('hltResultMT')
	_string_serialiser = StringSerializer()
int	SizeWord = 0
int	CLIDOffset = 1
int	NameLengthOffset = 2
int	NameOffset = 3

Detailed Description

Methods to deserialise HLTResultMT using Python bindings of C++ classes
and reimplementing some logic from TriggerEDMDeserialiserAlg

Function Documentation

get_collection_name()

python.hltResultMT.get_collection_name

(

raw_data_words

)

Extract type+name words from the full collection raw data and convert to string

Definition at line 85 of file hltResultMT.py.

def get_collection_name(raw_data_words):
    '''Extract type+name words from the full collection raw data and convert to string'''
 
    # Use Python bindings of C++ StringSerialiser to deserialise collection type and name.
    # Doing the tuple-conversion here has a big performance impact. Probably this could be
    # further improved if the eformat had better support for u32slice iterators.
 
    nw = raw_data_words[NameLengthOffset]
    name_words = tuple(raw_data_words[NameOffset:NameOffset+nw])
    return _string_serialiser.deserialize(name_words)
 
 

get_collection_payload()

python.hltResultMT.get_collection_payload

(

raw_data_words

)

Extract the serialised collection payload from the full collection raw data

Definition at line 97 of file hltResultMT.py.

def get_collection_payload(raw_data_words):
    '''Extract the serialised collection payload from the full collection raw data'''
 
    name_size = raw_data_words[NameLengthOffset]
    payload_start = NameOffset + name_size + 1
    return raw_data_words[payload_start:]
 
 

get_collections()

python.hltResultMT.get_collections	(		rob,
			skip_payload = False )

Extract a list of EDMCollection objects from the HLT ROBFragment.
If skip_payload=True, only the information about type, name and size
are kept but the payload is discarded to improve performance.

Definition at line 105 of file hltResultMT.py.

def get_collections(rob, skip_payload=False):
    '''
    Extract a list of EDMCollection objects from the HLT ROBFragment.
    If skip_payload=True, only the information about type, name and size
    are kept but the payload is discarded to improve performance.
    '''
 
    start = SizeWord
    collections = []
    last_aux_cont = None
    rod_size = len(rob.rod_data())
    while start < rod_size:
        size = rob.rod_data()[start+SizeWord]
        coll_name = get_collection_name(rob.rod_data()[start:start+size])
        words = None if skip_payload else get_collection_payload(rob.rod_data()[start:start+size])
        coll = EDMCollection(coll_name, size, words)
        if coll.is_xAOD_aux_container():
            last_aux_cont = coll
        if coll.is_xAOD_decoration():
            coll.parent = last_aux_cont
        collections.append(coll)
        start += size
    return collections

Variable Documentation

_string_serialiser

python.hltResultMT._string_serialiser = StringSerializer()

protected

Definition at line 16 of file hltResultMT.py.

CLIDOffset

int python.hltResultMT.CLIDOffset = 1

Definition at line 20 of file hltResultMT.py.

log

python.hltResultMT.log = logging.getLogger('hltResultMT')

Definition at line 13 of file hltResultMT.py.

NameLengthOffset

int python.hltResultMT.NameLengthOffset = 2

Definition at line 21 of file hltResultMT.py.

NameOffset

int python.hltResultMT.NameOffset = 3

Definition at line 22 of file hltResultMT.py.

SizeWord

int python.hltResultMT.SizeWord = 0

Definition at line 19 of file hltResultMT.py.