Make JcrCallback a functional interface.

diff --git a/org.argeo.jcr/src/org/argeo/jcr/JcrCallback.java b/org.argeo.jcr/src/org/argeo/jcr/JcrCallback.java
index 0c4706f84ea6868c185ac1969f68bd300ecccce5..2cea2a969a73528c965b108fb4f753e8b4cd360d 100644 (file)
--- a/org.argeo.jcr/src/org/argeo/jcr/JcrCallback.java
+++ b/org.argeo.jcr/src/org/argeo/jcr/JcrCallback.java
@@ -15,9 +15,16 @@
  */
 package org.argeo.jcr;
 
+import java.util.function.Function;
+
 import javax.jcr.Session;
 
 /** An arbitrary execution on a JCR session, optionally returning a result. */
-public interface JcrCallback {
-       public Object execute(Session session);
+@FunctionalInterface
+public interface JcrCallback extends Function<Session, Object> {
+       /** @deprecated Use {@link #apply(Session)} instead. */
+       @Deprecated
+       public default Object execute(Session session) {
+               return apply(session);
+       }
 }