Inline the internal TransactionIsolation.description() method

Author: rbygrave

ebean-datasource/src/main/java/io/ebean/datasource/pool/ConnectionPool.java

@@ -14,8 +14,6 @@
 import java.util.concurrent.atomic.LongAdder;
 import java.util.concurrent.locks.ReentrantLock;
 
-import static io.ebean.datasource.pool.TransactionIsolation.description;
-
 /**
  * A robust DataSource implementation.
  * <ul>
@@ -213,6 +211,28 @@ private void initialiseConnections() throws SQLException {
       name, ro, autoCommit, description(transactionIsolation), minConnections, maxConnections, (System.currentTimeMillis() - start), validateOnHeartbeat);
   }
 
+  /**
+   * Return the string description of the transaction isolation level specified.
+   */
+  private static String description(int level) {
+    switch (level) {
+      case Connection.TRANSACTION_NONE:
+        return "NONE";
+      case Connection.TRANSACTION_READ_COMMITTED:
+        return "READ_COMMITTED";
+      case Connection.TRANSACTION_READ_UNCOMMITTED:
+        return "READ_UNCOMMITTED";
+      case Connection.TRANSACTION_REPEATABLE_READ:
+        return "REPEATABLE_READ";
+      case Connection.TRANSACTION_SERIALIZABLE:
+        return "SERIALIZABLE";
+      case -1:
+        return "NotSet";
+      default:
+        return "UNKNOWN[" + level + "]";
+    }
+  }
+
   /**
    * Initialise the database using the owner credentials if we can't connect using the normal credentials.
    * <p>