Re #4048 prototyping fast local catalog

Code/Mantid/scripts/reduction/instruments/sans/data_cat.py

@@ -0,0 +1,59 @@
+import os
+import sqlite3
+import re
+
+def list_all():
+	data_dir =  os.path.join(os.path.expanduser("~"), "data/eqsans")
+	log_ws = "__log"
+
+	def read_prop(prop):
+		try:
+			return mtd[log_ws].getRun().getProperty(prop).value
+		except:
+			return ""
+
+	db = sqlite3.connect("/home/m2d/data_catalog")
+	c = db.cursor()
+	#c.execute("""create table dataset (run int, title text, start text, duration real)""")
+
+	print "%-6s %-60s %-22s %-10s" % ("Run", "Title", "Start", "Duraction [s]")
+
+	icount = 0
+	for f in os.listdir(data_dir):
+		if f.endswith("nxs"):
+			r_re = re.search("EQSANS_([0-9]+)_event", f)
+			if r_re is None:
+				continue
+
+			run_number = int(r_re.group(1))
+			t = (run_number,)
+			c.execute('select * from dataset where run=?', t)
+			rows = c.fetchall()
+
+			if len(rows) == 0:
+				path = os.path.join(data_dir, f)
+				LoadEventNexus(path, OutputWorkspace=log_ws, MetaDataOnly=True)
+				runno = int(read_prop("run_number"))
+				title = read_prop("run_title")
+				run_start = read_prop("start_time")		
+				duration = float(read_prop("duration"))
+
+				t = (runno, title, run_start, duration)
+				print "%-6s %-60s %-22s %-10s" % (runno, title, run_start, duraction)
+				print "inserting", runno, title, run_start, duration
+
+				c.execute('insert into dataset values (?,?,?,?)', t)
+			else:
+				row = rows[0]
+				print "%-6s %-60s %-22s %-10s" % (row[0], row[1], row[2], row[3])
+
+			icount += 1
+			#if icount>2:
+			#	break
+	db.commit()
+	c.close()
+
+
+
+if __name__ == '__main__':
+    list_all()