Changes made in this release of OTDB
------------------------------------

The metadata of the trees is extended with 4 fields:
	ADD COLUMN groupID			INTEGER,
	ADD COLUMN processType		VARCHAR(20),
	ADD COLUMN processSubtype	VARCHAR(120),
	ADD COLUMN strategy			VARCHAR(30);

This has inpact on the treeInfo structure used by several sql functions.
The new treeInfo SQL structure is:
CREATE TYPE treeInfo AS (
	treeID				INT4,			-- OTDBtree.treeID%TYPE,
	momID				INT4,
>>	groupID				INT4,
	classification		INT2,			-- classification.ID%TYPE,
	creator				VARCHAR(20),	-- OTDBuser.username%TYPE,
	creationDate		timestamp(0),
	type				INT2,			-- treetype.ID%TYPE,
	state				INT2,			-- treestate.ID%TYPE,
	originalTree		INT4,			-- OTDBtree.treeID%TYPE,
	campaign			VARCHAR(30),	-- campaign.name%TYPE,
	starttime			timestamp(0),
	stoptime			timestamp(0),
>>	processType			VARCHAR(20),
>>	processSubtype		VARCHAR(120),
>>	strategy			VARCHAR(30),
	description			TEXT
);

The new C++ class is: 
class OTDBtree {
public:
    OTDBtree() : itsTreeID(0), itsMomID(0) {};
    ~OTDBtree() {};

    treeIDType      treeID() const      { return (itsTreeID); }
    treeIDType      momID()  const      { return (itsMomID);  }
>>  treeIDType      groupID;
    classifType     classification; // development / test / operational
    string          creator;
    ptime           creationDate;
    treeType        type;           // hardware / VItemplate / VHtree
    treeState       state;          // idle / configure / ... / active / ...
>>  string          processType;    // Maintenance / Reservation / Observation / ..
>>  string          processSubtype; // UVmeasurement / PulsarPipeline / ...
>>  string          strategy;       // restricted free text
    string          description;    // free text

    // -- VIC only --
    treeIDType      originalTree;
    string          campaign;
    ptime           starttime;
    ptime           stoptime;
	...
}

The affected functions are:
getTreeGroup
getTreesInPeriod
getExecutableTrees
getTreeInfo
getTreeList
setMomInfo

The interface of the last 2 functions are changed:

getTreeList is extended with the four new fields. Every field is optional.
The new function is: 
// getTreeList ([treeType], [classification], [groupID], [processType], [processSubtype], [strategy])
vector<OTDBtree> getTreeList(treeType, classifType, uint32, const string&, const string&, const string&);


setMomInfo is extenden with the groupID:
The new function is: 
bool setMomInfo(treeIDType, treeIDType, uint32, string)
// setMomInfo (treeID, MomID, groupID, campaign)


The GroupID's are managed by OTDB, so a new function is added to the database to get a new unique groupID:
uint32  newGroupID();


NOTES NOTES NOTES NOTES NOTES
Since it is not clear yet what values are allowed in the processType, processSubtype and strategy fields
there is no check on the values of the fields yet other than that the combination of them must be unique 
for default templates.

The processType fields can only be assigned to template and default-template trees. Trying to assign them
to the other fieldtypes results in an error.