def applyMappingToTarget(mapping, alignment, tigerHelper, stripTargetIDPrefix):
"""Applies sentiment values to target.
Given a mapping from source node IDs to sentiment values
and an alignment between source and target node IDs,
the sentiment values are applied to the target tree.
@param mapping map from source node IDs to sentiment values
@param alignment map from source node IDs to target node IDs
@param target etree parse tree - will be modified
"""
global countSourceNotInAlignment
global countMappingApplied
global countTargetNotFound
for (sourceID, sentiment) in mapping.iteritems():
if not sourceID in alignment:
logger.warn("Source node ID %s not found in alignment.", sourceID)
countSourceNotInAlignment += 1
continue
targetID = alignment[sourceID]
origTargetID = targetID
if stripTargetIDPrefix:
targetID = ma_util.stripPrefixFromString(targetID)
node = tigerHelper.getNode(targetID)
if node is None:
logger.warn("Could not find target node with ID %s", targetID)
countTargetNotFound += 1
continue
if node.tag == "s":
continue
countMappingApplied += 1
th.setSentiment(node, sentiment, th.SEN_MAPPED)
node.set("x-source-id", sourceID)
node.set("x-original-id", origTargetID)
def stripPrefixFromID(self):
"""Removes alphabetic prefix from ID attributes in TigerXML tree.
@param tree {etree} TigerXML tree
"""
logger.info("Stripping prefixes from node IDs")
expression = ".//*[@id]"
nodes = self.tree.iterfind(expression)
for node in nodes:
nodeID = node.get("id")
node.set("id", ma_util.stripPrefixFromString(nodeID))
expression = ".//graph[@root]"
nodes = self.tree.iterfind(expression)
for node in nodes:
nodeID = node.get("root")
node.set("root", ma_util.stripPrefixFromString(nodeID))
expression = ".//edge[@idref]"
nodes = self.tree.iterfind(expression)
for node in nodes:
nodeID = node.get("idref")
node.set("idref", ma_util.stripPrefixFromString(nodeID))