func (c *Context) init() {
// skip if the post processing already exists for this simid in the db
dummy := 0
err := c.QueryRow("SELECT AgentId FROM Agents WHERE SimId = ? LIMIT 1", c.Simid).Scan(&dummy)
if err == nil {
panic(AlreadyPostErr(c.Simid))
} else if err != sql.ErrNoRows {
panicif(err)
}
tx, err := c.Begin()
panicif(err)
// build Agents table
sql := `INSERT INTO Agents
SELECT n.SimId,n.AgentId,n.Kind,n.Spec,n.Prototype,n.ParentId,n.Lifetime,n.EnterTime,x.ExitTime
FROM
AgentEntry AS n
LEFT JOIN AgentExit AS x ON n.AgentId = x.AgentId AND n.SimId = x.SimId AND n.SimId = ?;`
_, err = tx.Exec(sql, c.Simid)
panicif(err)
c.nodes = make([]*Node, 0, 10000)
c.mappednodes = map[int32]struct{}{}
// build TimeList table
sql = "SELECT Duration FROM Info WHERE SimId = ?;"
rows, err := tx.Query(sql, c.Simid)
panicif(err)
defer rows.Close()
for rows.Next() {
var dur int
panicif(rows.Scan(&dur))
for i := 0; i < dur; i++ {
_, err := tx.Exec("INSERT INTO TimeList VALUES (?, ?);", c.Simid, i)
panicif(err)
}
}
panicif(rows.Err())
// create temp res table without simid
c.Log.Println("Creating temporary resource table...")
c.tmpResTbl = "tmp_restbl_" + fmt.Sprintf("%x", c.Simid)
_, err = tx.Exec("DROP TABLE IF EXISTS " + c.tmpResTbl)
panicif(err)
sql = "CREATE TABLE " + c.tmpResTbl + " AS SELECT ResourceId,TimeCreated,Parent1,Parent2,QualId,Quantity FROM Resources WHERE SimId = ?;"
_, err = tx.Exec(sql, c.Simid)
panicif(err)
c.Log.Println("Indexing temporary resource table...")
_, err = tx.Exec(query.Index(c.tmpResTbl, "Parent1"))
panicif(err)
_, err = tx.Exec(query.Index(c.tmpResTbl, "Parent2"))
panicif(err)
tx.Commit()
// create prepared statements
c.tmpResStmt, err = c.Prepare(resSqlHead + c.tmpResTbl + resSqlTail)
panicif(err)
c.dumpStmt, err = c.Prepare(dumpSql)
panicif(err)
c.ownerStmt, err = c.Prepare(ownerSql)
panicif(err)
}
// The number of sql commands to buffer before dumping to the output database.
const DumpFreq = 100000
var (
preExecStmts = []string{
"CREATE TABLE IF NOT EXISTS AgentExit (SimId BLOB,AgentId INTEGER,ExitTime INTEGER);",
"CREATE TABLE IF NOT EXISTS Compositions (SimId BLOB,QualId INTEGER,NucId INTEGER, MassFrac REAL);",
"CREATE TABLE IF NOT EXISTS Products (SimId BLOB,QualId INTEGER,Quality TEXT);",
"CREATE TABLE IF NOT EXISTS Resources (SimId INTEGER,ResourceId INTEGER,ObjId INTEGER,Type TEXT,TimeCreated INTEGER,Quantity REAL,Units TEXT,QualId INTEGER,Parent1 INTEGER,Parent2 INTEGER);",
"CREATE TABLE IF NOT EXISTS ResCreators (SimId INTEGER,ResourceId INTEGER,AgentId INTEGER);",
"CREATE TABLE IF NOT EXISTS Agents (SimId BLOB,AgentId INTEGER,Kind TEXT,Spec TEXT,Prototype TEXT,ParentId INTEGER,Lifetime INTEGER,EnterTime INTEGER,ExitTime INTEGER);",
"CREATE TABLE IF NOT EXISTS Inventories (SimId BLOB,ResourceId INTEGER,AgentId INTEGER,StartTime INTEGER,EndTime INTEGER,QualId INTEGER,Quantity REAL);",
"CREATE TABLE IF NOT EXISTS TimeList (SimId BLOB, Time INTEGER);",
"CREATE TABLE IF NOT EXISTS Transactions (SimId BLOB, TransactionId INTEGER, SenderId INTEGER, ReceiverId INTEGER, ResourceId INTEGER, Commodity TEXT, Time INTEGER);",
query.Index("TimeList", "Time"),
query.Index("Resources", "SimId", "ResourceId", "QualId"),
query.Index("Compositions", "SimId", "QualId", "NucId"),
query.Index("Transactions", "SimId", "ResourceId"),
query.Index("Transactions", "TransactionId"),
query.Index("ResCreators", "SimId", "ResourceId"),
}
postExecStmts = []string{
query.Index("Agents", "SimId", "Prototype"),
query.Index("Inventories", "SimId", "AgentId"),
query.Index("Inventories", "SimId", "ResourceId", "StartTime"),
"ANALYZE;",
}
dumpSql = "INSERT INTO Inventories VALUES (?,?,?,?,?,?,?);"
resSqlHead = "SELECT ResourceId,TimeCreated,QualId,Quantity FROM "
resSqlTail = " WHERE Parent1 = ? OR Parent2 = ?;"