46c60edafade069b072c2eb40b096604bdfe828d
braney
  Wed Jul 16 15:55:37 2014 -0700
impose sorting on orderKey for assembly track hubs
diff --git src/hg/inc/trackHub.h src/hg/inc/trackHub.h
index 1b610e2..46c9f13 100644
--- src/hg/inc/trackHub.h
+++ src/hg/inc/trackHub.h
@@ -45,30 +45,31 @@
 
 struct trackHubGenome
 /* A genome serviced within a track hub. */
     {
     struct trackHubGenome *next;
     char *name;	/* Something like hg18 or mm9, a UCSC assembly database name. */
     char *trackDbFile;	/* The base trackDb.ra file. */
     struct hash *settingsHash;	/* Settings from hub.ra file. */
     char *twoBitPath;  /* URL to twoBit.  If not null, this is an assmebly hub*/
     struct twoBitFile *tbf;  /* open handle to two bit file */
     char *groups;	     /* URL to group.txt file */
     char *defaultPos;        /* default position */
     char *organism;          /* organism name, like Human */
     char *description;       /* description, also called freeze name */
     struct trackHub *trackHub; /* associated track hub */
+    unsigned orderKey;   /* the orderKey for changing the order from the order in the file */
     };
 
 void trackHubClose(struct trackHub **pHub);
 /* Close up and free resources from hub. */
 
 struct trackHub *trackHubOpen(char *url, char *hubName);
 /* Open up a track hub from url.  Reads and parses hub.ra and the genomesFile. 
  * The hubName is generally just the asciified ID number. */
 
 struct trackHubGenome *trackHubFindGenome(struct trackHub *hub, char *genomeName);
 /* Return trackHubGenome of given name associated with hub.  Return NULL if no
  * such genome. */
 
 struct trackDb *trackHubTracksForGenome(struct trackHub *hub, struct trackHubGenome *genome);
 /* Get list of tracks associated with genome.  Check that it only is composed of legal