experimantal in memory jid caching

1 files changed, 15 insertions, 0 deletions

diff --git a/src/main/java/eu/siacs/conversations/xmpp/jid/Jid.java b/src/main/java/eu/siacs/conversations/xmpp/jid/Jid.java
index b8be527b..f6ab73bf 100644
--- a/src/main/java/eu/siacs/conversations/xmpp/jid/Jid.java
+++ b/src/main/java/eu/siacs/conversations/xmpp/jid/Jid.java
@@ -1,5 +1,7 @@
 package eu.siacs.conversations.xmpp.jid;
 
+import android.util.LruCache;
+
 import net.java.otr4j.session.SessionID;
 
 import java.net.IDN;
@@ -12,6 +14,8 @@ import gnu.inet.encoding.StringprepException;
  */
 public final class Jid {
 
+	private static LruCache<String,Jid> cache = new LruCache<>(1024);
+
 	private final String localpart;
 	private final String domainpart;
 	private final String resourcepart;
@@ -62,6 +66,15 @@ public final class Jid {
 	private Jid(final String jid) throws InvalidJidException {
 		if (jid == null) throw new InvalidJidException(InvalidJidException.IS_NULL);
 
+		Jid fromCache = Jid.cache.get(jid);
+		if (fromCache != null) {
+			displayjid = fromCache.displayjid;
+			localpart = fromCache.localpart;
+			domainpart = fromCache.domainpart;
+			resourcepart = fromCache.resourcepart;
+			return;
+		}
+
 		// Hackish Android way to count the number of chars in a string... should work everywhere.
 		final int atCount = jid.length() - jid.replace("@", "").length();
 		final int slashCount = jid.length() - jid.replace("/", "").length();
@@ -141,6 +154,8 @@ public final class Jid {
 			throw new InvalidJidException(InvalidJidException.INVALID_PART_LENGTH);
 		}
 
+		Jid.cache.put(jid,this);
+
 		this.displayjid = finaljid;
 	}