From: Simon Brandhof <simon.brandhof@sonarsource.com>
Date: Sun, 13 May 2018 11:52:52 +0000 (+0200)
Subject: Speed-up DatabaseUtils.tableExists() on Oracle
X-Git-Tag: 7.5~1201
X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=78cddc366251909c34cddbd777630260fc38d2b2;p=sonarqube.git

Speed-up DatabaseUtils.tableExists() on Oracle

Signed-off-by: Simon Brandhof <simon.brandhof@sonarsource.com>
---

diff --git a/server/sonar-db-core/src/main/java/org/sonar/db/DatabaseUtils.java b/server/sonar-db-core/src/main/java/org/sonar/db/DatabaseUtils.java
index 9b850e40f65..0e9c5d1169e 100644
--- a/server/sonar-db-core/src/main/java/org/sonar/db/DatabaseUtils.java
+++ b/server/sonar-db-core/src/main/java/org/sonar/db/DatabaseUtils.java
@@ -38,6 +38,7 @@ import java.util.Collections;
 import java.util.Date;
 import java.util.HashSet;
 import java.util.List;
+import java.util.Locale;
 import java.util.Set;
 import java.util.function.Consumer;
 import java.util.function.IntFunction;
@@ -309,8 +310,15 @@ public class DatabaseUtils {
     * @throws SQLException
     */
   public static boolean tableExists(String table, Connection connection) {
+    return doTableExists(table, connection) ||
+      doTableExists(table.toLowerCase(Locale.ENGLISH), connection) ||
+      doTableExists(table.toUpperCase(Locale.ENGLISH), connection);
+
+  }
+
+  private static boolean doTableExists(String table, Connection connection) {
     // table type is used to speed-up Oracle by removing introspection of system tables and aliases.
-    try (ResultSet rs = connection.getMetaData().getTables(null, null, null, TABLE_TYPE)) {
+    try (ResultSet rs = connection.getMetaData().getTables(null, null, table, TABLE_TYPE)) {
       while (rs.next()) {
         String name = rs.getString("TABLE_NAME");
         if (table.equalsIgnoreCase(name)) {