andi/perfdb
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add trace logging and make set of proposals synchronized

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I checked if computing the proposals with a parallel stream would be
beneficial. Turns out the stream uses several threads, but the overall
computation is not faster, because each individual computation is
slower.
This commit is contained in:
ahr
2017-12-30 10:08:54 +01:00
parent 3cc512f73d
commit bcc30f0f3f
1 changed files with 11 additions and 1 deletions
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12
data-store/src/main/java/org/lucares/pdb/datastore/lang/QueryCompletionPdbLangParser.java
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@@ -1,6 +1,7 @@
package org.lucares.pdb.datastore.lang;
import java.util.BitSet;
import java.util.Collections;
import java.util.List;
import java.util.SortedSet;
import java.util.TreeSet;
@@ -19,14 +20,18 @@ import org.antlr.v4.runtime.tree.TerminalNode;
import org.lucares.pdb.datastore.Proposal;
import org.lucares.pdb.datastore.internal.DataStore;
import org.lucares.utils.CollectionUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class QueryCompletionPdbLangParser extends PdbLangParser {
private static final Logger LOGGER = LoggerFactory.getLogger(QueryCompletionPdbLangParser.class);
public class Listener implements PdbLangListener, ANTLRErrorListener {
private final int caretPosition;
private final DataStore dataStore;
private final SortedSet<Proposal> proposals = new TreeSet<>();
private final SortedSet<Proposal> proposals = Collections.synchronizedSortedSet(new TreeSet<>());
private final String query;
public Listener(final String query, final DataStore dataStore, final int caretPosition) {
@@ -51,6 +56,7 @@ public class QueryCompletionPdbLangParser extends PdbLangParser {
final SortedSet<String> proposedValues = getPropertyValuesByPrefix(propertyKey,
propertyValuePrefix);
final long startTime = System.nanoTime();
proposedValues.stream()//
.map(v -> {
final StringBuilder newQuery = new StringBuilder(query);
@@ -63,13 +69,17 @@ public class QueryCompletionPdbLangParser extends PdbLangParser {
return new Proposal(p, count> 0);
}).forEach(proposals::add);
LOGGER.trace("proposals for property value {} took {} ms", propertyValuePrefix, (System.nanoTime() - startTime) / 1_000_000.0);
} else if (_ctx instanceof IdentifierExpressionContext) {
final long startTime = System.nanoTime();
final String propertyKeyPrefix = node.getText().substring(0, caretPosition - start);
final StringBuilder newQueryPattern = new StringBuilder(query);
newQueryPattern.replace(start, end + 1, "%s");
addProposalsForKeys(propertyKeyPrefix, newQueryPattern.toString());
LOGGER.trace("proposals for property key {} took {} ms", propertyKeyPrefix, (System.nanoTime() - startTime) / 1_000_000.0);
}
}
}