From 4817ebf97e83217007d0cfeaa56ca477a17536b4 Mon Sep 17 00:00:00 2001
From: Kipp Cannon <kipp.cannon@ligo.org>
Date: Mon, 3 Jun 2019 18:04:22 +0900
Subject: [PATCH] RankingStatPDF: add .get_xml_root() class method
---
gstlal-inspiral/python/far.py | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/gstlal-inspiral/python/far.py b/gstlal-inspiral/python/far.py
index a0470061dd..7d4a244dce 100644
--- a/gstlal-inspiral/python/far.py
+++ b/gstlal-inspiral/python/far.py
@@ -766,11 +766,25 @@ WHERE
return health >= 1.
+ @classmethod
+ def get_xml_root(cls, xml, name):
+ """
+ Sub-classes can use this in their overrides of the
+ .from_xml() method to find the root element of the XML
+ serialization.
+ """
+ name = u"%s:%s" % (name, cls.ligo_lw_name_suffix)
+ xml = [elem for elem in xml.getElementsByTagName(ligolw.LIGO_LW.tagName) if elem.hasAttribute(u"Name") and elem.Name == name]
+ if len(xml) != 1:
+ raise ValueError("XML tree must contain exactly one %s element named %s" % (ligolw.LIGO_LW.tagName, name))
+ return xml[0]
+
+
@classmethod
def from_xml(cls, xml, name):
# find the root of the XML tree containing the
# serialization of this object
- xml, = [elem for elem in xml.getElementsByTagName(ligolw.LIGO_LW.tagName) if elem.hasAttribute(u"Name") and elem.Name == u"%s:%s" % (name, cls.ligo_lw_name_suffix)]
+ xml = cls.get_xml_root(xml, name)
# create a mostly uninitialized instance
self = cls(None)
# populate from XML
--
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