(jackrabbit-oak) 01/01: OAK-11894 resolve the IdentifierManager lazily

[jo...@apache.org]

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joerghoh pushed a commit to branch OAK-11894
in repository https://gitbox.apache.org/repos/asf/jackrabbit-oak.git

commit f9271796748036cee7cb78b57ecee7a94e4ef3b7
Author: Joerg Hoh <jh...@adobe.com>
AuthorDate: Fri Sep 5 12:19:03 2025 +0200

    OAK-11894 resolve the IdentifierManager lazily
---
 .../main/java/org/apache/jackrabbit/oak/jcr/xml/ImporterImpl.java | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/oak-jcr/src/main/java/org/apache/jackrabbit/oak/jcr/xml/ImporterImpl.java b/oak-jcr/src/main/java/org/apache/jackrabbit/oak/jcr/xml/ImporterImpl.java
index c60f54b9bc..e71341a1be 100644
--- a/oak-jcr/src/main/java/org/apache/jackrabbit/oak/jcr/xml/ImporterImpl.java
+++ b/oak-jcr/src/main/java/org/apache/jackrabbit/oak/jcr/xml/ImporterImpl.java
@@ -23,6 +23,7 @@ import java.util.List;
 import java.util.Set;
 import java.util.Stack;
 import java.util.UUID;
+import java.util.function.Supplier;
 
 import javax.jcr.ImportUUIDBehavior;
 import javax.jcr.ItemExistsException;
@@ -44,6 +45,7 @@ import org.apache.jackrabbit.oak.api.Tree;
 import org.apache.jackrabbit.oak.api.Type;
 import org.apache.jackrabbit.oak.commons.PathUtils;
 import org.apache.jackrabbit.oak.commons.collections.IterableUtils;
+import org.apache.jackrabbit.oak.commons.function.Suppliers;
 import org.apache.jackrabbit.oak.jcr.delegate.NodeDelegate;
 import org.apache.jackrabbit.oak.jcr.delegate.SessionDelegate;
 import org.apache.jackrabbit.oak.jcr.security.AccessManager;
@@ -578,7 +580,7 @@ public class ImporterImpl implements Importer {
          *    no modifications are performed
          */
         private final IdentifierManager currentStateIdManager;
-        private final IdentifierManager baseStateIdManager;
+        private final Supplier<IdentifierManager> baseStateIdManager;
 
         /**
          * Set of newly created uuid from nodes which are
@@ -590,7 +592,7 @@ public class ImporterImpl implements Importer {
 
         private IdResolver(@NotNull Root root, @NotNull ContentSession contentSession) {
             currentStateIdManager = new IdentifierManager(root);
-            baseStateIdManager = new IdentifierManager(contentSession.getLatestRoot());
+            baseStateIdManager = Suppliers.memoize(() -> new IdentifierManager(contentSession.getLatestRoot()));
 
             if (!root.hasPendingChanges()) {
                 importedUUIDs = new HashSet<String>();
@@ -604,7 +606,7 @@ public class ImporterImpl implements Importer {
         private Tree getConflictingTree(@NotNull String id) {
             //1. First check from base state that tree corresponding to
             //this id exist
-            Tree conflicting = baseStateIdManager.getTree(id);
+            Tree conflicting = baseStateIdManager.get().getTree(id);
             if (conflicting == null && importedUUIDs != null) {
                 //1.a. Check if id is found in newly created nodes
                 if (importedUUIDs.contains(id)) {