Use an optional instead of a magic value.

diff --git a/src/main/java/net/pterodactylus/sone/core/SoneInserter.java b/src/main/java/net/pterodactylus/sone/core/SoneInserter.java
index 59524b3..d5fe9a2 100644 (file)
--- a/src/main/java/net/pterodactylus/sone/core/SoneInserter.java
+++ b/src/main/java/net/pterodactylus/sone/core/SoneInserter.java
@@ -17,6 +17,8 @@
 
 package net.pterodactylus.sone.core;
 
+import static com.google.common.base.Optional.absent;
+import static com.google.common.base.Optional.of;
 import static com.google.common.base.Preconditions.checkArgument;
 import static java.lang.System.currentTimeMillis;
 import static net.pterodactylus.sone.data.Album.NOT_EMPTY;
@@ -52,6 +54,7 @@ import net.pterodactylus.util.template.TemplateException;
 import net.pterodactylus.util.template.TemplateParser;
 import net.pterodactylus.util.template.XmlFilter;
 
+import com.google.common.base.Optional;
 import com.google.common.collect.FluentIterable;
 import com.google.common.collect.Ordering;
 import com.google.common.eventbus.EventBus;
@@ -189,7 +192,7 @@ public class SoneInserter extends AbstractService {
         */
        @Override
        protected void serviceRun() {
-               long lastModificationTime = 0;
+               Optional<Long> lastModificationTime = absent();
                String lastInsertedFingerprint = lastInsertFingerprint;
                String lastFingerprint = "";
                while (!shouldStop()) {
@@ -205,7 +208,7 @@ public class SoneInserter extends AbstractService {
                                                modified = !sone.getFingerprint().equals(lastInsertedFingerprint);
                                        }
                                        lastFingerprint = "";
-                                       lastModificationTime = 0;
+                                       lastModificationTime = absent();
                                        continue;
                                }
 
@@ -215,16 +218,16 @@ public class SoneInserter extends AbstractService {
                                        if (!fingerprint.equals(lastFingerprint)) {
                                                if (fingerprint.equals(lastInsertedFingerprint)) {
                                                        modified = false;
-                                                       lastModificationTime = 0;
+                                                       lastModificationTime = absent();
                                                        logger.log(Level.FINE, String.format("Sone %s has been reverted to last insert state.", sone));
                                                } else {
-                                                       lastModificationTime = System.currentTimeMillis();
+                                                       lastModificationTime = of(currentTimeMillis());
                                                        modified = true;
                                                        logger.log(Level.FINE, String.format("Sone %s has been modified, waiting %d seconds before inserting.", sone.getName(), insertionDelay));
                                                }
                                                lastFingerprint = fingerprint;
                                        }
-                                       if (modified && (lastModificationTime > 0) && ((System.currentTimeMillis() - lastModificationTime) > (insertionDelay * 1000))) {
+                                       if (modified && lastModificationTime.isPresent() && ((currentTimeMillis() - lastModificationTime.get()) > (insertionDelay * 1000))) {
                                                lastInsertedFingerprint = fingerprint;
                                                insertInformation = new InsertInformation(sone);
                                        }
@@ -266,7 +269,7 @@ public class SoneInserter extends AbstractService {
                                                synchronized (sone) {
                                                        if (lastInsertedFingerprint.equals(sone.getFingerprint())) {
                                                                logger.log(Level.FINE, String.format("Sone “%s” was not modified further, resetting counter…", sone));
-                                                               lastModificationTime = 0;
+                                                               lastModificationTime = absent();
                                                                lastInsertFingerprint = lastInsertedFingerprint;
                                                                core.touchConfiguration();
                                                                modified = false;