@Override
public boolean omit(LineInfo info, String sql) {
globalCounters.increment(GlobalCounters.LINES);
final StatementCounter sc = (StatementCounter) sink;
if (CandidateParser.isInsert(sql)) {
return false;
}
final CandidateParser cp = new CandidateParser(sql);
if (cp.shrink()) {
final String shrunk = cp.getShrunk();
final NonInsertEntry se = sc.byShrunk.get(shrunk);
if (se != null) {
globalCounters.increment(GlobalCounters.SHRINK_CACHE_HITS);
sc.saveIntermediateCheckpoint();
se.bump(dmlBreakout, literalCounts);
return true;
}
globalCounters.increment(GlobalCounters.SHRINK_CACHE_MISSES);
}
return false;
}
@Override
public void onStatement(String sql, SourcePosition sp, Statement s) throws Throwable {
saveIntermediateCheckpoint();
globalCounters.increment(GlobalCounters.PROCESSED_STATEMENTS);
if (s instanceof EmptyStatement) {
globalCounters.increment(GlobalCounters.EMPTY_STATEMENTS);
return;
}
if (!s.isDML()) {
trackNonDML(s, sql);
return;
}
final Emitter emitter = Singletons.require(HostService.class).getDBNative().getEmitter();
emitter.setOptions(emitOptions);
final StringBuilder buf = new StringBuilder();
final DMLStatement dmls = (DMLStatement) s;
final DMLCounters incCounter = lookupDMLCounter(dmls);
if (dmls instanceof InsertIntoValuesStatement) {
final InsertIntoValuesStatement iivs = (InsertIntoValuesStatement) dmls;
emitter.emitInsertPrefix(tee.getPersistenceContext(), iivs, buf);
final String prefix = buf.toString();
InsertEntry ie = inserts.get(prefix);
if (ie == null) {
final Database<?> db = dmls.getDatabase(tee.getPersistenceContext());
ie =
new InsertEntry(
corpus,
prefix,
iivs.getColumnSpecification().size(),
iivs.getClass().getSimpleName(),
(db == null ? null : db.getName().get()));
inserts.put(prefix, ie);
}
ie.bump(iivs.getValues().size());
} else {
emitter.emitStatement(tee.getPersistenceContext(), dmls, buf);
final String p = buf.toString();
NonInsertEntry se = byParam.get(p);
if (se == null) {
String shrunk = null;
int litCount = -1;
if (!(dmls instanceof InsertIntoValuesStatement)) {
final CandidateParser cp = new CandidateParser(sql);
if (cp.shrink()) {
shrunk = cp.getShrunk();
// also verify we get the same number of literals
final ValueManager valueManager = tee.getPersistenceContext().getValueManager();
litCount = cp.getLiterals().size();
if (litCount != valueManager.getNumberOfLiterals()) {
final ValueManager.CacheStatus cacheStatus = valueManager.getCacheStatus();
String reason;
switch (cacheStatus) {
case NOCACHE_DYNAMIC_FUNCTION:
reason = "contains a non-cacheable dynamic function";
break;
case NOCACHE_TOO_MANY_LITERALS:
reason = "literal count exceeded configured max_cached_plan_literals";
break;
case CACHEABLE:
default:
reason = "unknown";
}
logError(
sql,
sp,
"Mismatched literal size; parse="
+ valueManager.getNumberOfLiterals()
+ "/shrink="
+ litCount
+ " , reason="
+ reason,
false);
}
} else {
logError(sql, sp, "Unable to shrink", false);
}
}
final Database<?> db = dmls.getDatabase(tee.getPersistenceContext());
se =
new NonInsertEntry(
corpus,
sql,
dmls.getClass().getSimpleName(),
(db == null ? null : db.getName().get()),
litCount,
incCounter);
byParam.put(p, se);
if (shrunk != null) {
globalCounters.increment(GlobalCounters.SHRINK_CACHE_ADDS);
byShrunk.put(shrunk, se);
}
}
if (se.populationObject.getLiteralCount() >= 0) {
literalCounts.sample(se.populationObject.getLiteralCount());
}
se.bump(dmlBreakout, literalCounts);
}
}