tree 8b3fd92d680c958606c32f1e209332941eb79d29
parent 507c04a6049fc64c0c646115f954a00b66cb5585
author Toshio Koide <t-koide@onlab.us> 1371080800 -0700
committer Toshio Koide <t-koide@onlab.us> 1371080800 -0700

rename GraphDBUtils to GraphDBOperation and make it to have GraphDBConnection's instance.