use of org.hsqldb_voltpatches.lib.LongKeyIntValueHashMap in project voltdb by VoltDB.
the class StatementManager method freeStatement.
/**
* Removes one (or all) of the links between a session and a compiled
* statement. If the statement is not linked with any other session, it is
* removed from management.
*
* @param csid the compiled statment identifier
* @param sessionID the session identifier
* @param freeAll if true, remove all links to the session
*/
synchronized void freeStatement(long csid, long sessionID, boolean freeAll) {
if (csid == -1) {
// statement was never added
return;
}
LongKeyIntValueHashMap scsMap = (LongKeyIntValueHashMap) sessionUseMap.get(sessionID);
if (scsMap == null) {
// statement already removed due to invalidation
return;
}
int sessionUseCount = scsMap.get(csid, 0);
if (sessionUseCount == 0) {
// statement already removed due to invalidation
} else if (sessionUseCount == 1 || freeAll) {
scsMap.remove(csid);
int usecount = useMap.get(csid, 0);
if (usecount == 0) {
// statement already removed due to invalidation
} else if (usecount == 1) {
Statement cs = (Statement) csidMap.remove(csid);
if (cs != null) {
int schemaid = cs.getSchemaName().hashCode();
LongValueHashMap sqlMap = (LongValueHashMap) schemaMap.get(schemaid);
String sql = (String) sqlLookup.remove(csid);
sqlMap.remove(sql);
}
useMap.remove(csid);
} else {
useMap.put(csid, usecount - 1);
}
} else {
scsMap.put(csid, sessionUseCount - 1);
}
}
use of org.hsqldb_voltpatches.lib.LongKeyIntValueHashMap in project voltdb by VoltDB.
the class StatementManager method linkSession.
/**
* Links a session with a registered compiled statement. If this session has
* not already been linked with the given statement, then the statement use
* count is incremented.
*
* @param csid the compiled statement identifier
* @param sessionID the session identifier
*/
private void linkSession(long csid, long sessionID) {
LongKeyIntValueHashMap scsMap;
scsMap = (LongKeyIntValueHashMap) sessionUseMap.get(sessionID);
if (scsMap == null) {
scsMap = new LongKeyIntValueHashMap();
sessionUseMap.put(sessionID, scsMap);
}
int count = scsMap.get(csid, 0);
scsMap.put(csid, count + 1);
if (count == 0) {
useMap.put(csid, useMap.get(csid, 0) + 1);
}
}
use of org.hsqldb_voltpatches.lib.LongKeyIntValueHashMap in project voltdb by VoltDB.
the class StatementManager method removeSession.
/**
* Releases the link betwen the session and all compiled statement objects
* it is linked to. If any such statement is not linked with any other
* session, it is removed from management.
*
* @param sessionID the session identifier
*/
synchronized void removeSession(long sessionID) {
LongKeyIntValueHashMap scsMap;
long csid;
Iterator i;
scsMap = (LongKeyIntValueHashMap) sessionUseMap.remove(sessionID);
if (scsMap == null) {
return;
}
i = scsMap.keySet().iterator();
while (i.hasNext()) {
csid = i.nextLong();
int usecount = useMap.get(csid, 1) - 1;
if (usecount == 0) {
Statement cs = (Statement) csidMap.remove(csid);
if (cs != null) {
int schemaid = cs.getSchemaName().hashCode();
LongValueHashMap sqlMap = (LongValueHashMap) schemaMap.get(schemaid);
String sql = (String) sqlLookup.remove(csid);
sqlMap.remove(sql);
}
useMap.remove(csid);
} else {
useMap.put(csid, usecount);
}
}
}
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