datastore: fix a few queries

Change-Id: I81247cffdd81fbe407a09008817c4940b5cd97c4

datastore/src/main/java/net/jami/datastore/dao/ContactDao.java

@@ -56,6 +56,11 @@ public class ContactDao extends AbstractDao<Contact> {
     }
 
     public boolean storeContactList(List<Contact> contactList) {
+        if (contactList.isEmpty()) {
+            log.error("Cannot store empty contact list");
+            return false;
+        }
+
         SQLConnection connection = DataStore.connectionPool.getConnection();
         try {
             String delete = "DELETE FROM contacts WHERE owner = ?";

datastore/src/main/java/net/jami/datastore/dao/SystemDao.java

@@ -50,8 +50,7 @@ public class SystemDao extends AbstractDao<SystemAccount> {
 
     @Override
     public boolean storeObject(SystemAccount object) {
-        String query =
-                "INSERT INTO system " + "(entity,certificate,privatekey)" + "VALUES " + "(?, ?, ?)";
+        String query = "INSERT INTO system (entity,certificate,privatekey) VALUES (?, ?, ?)";
         return executeInsert(query, object);
     }
 }

datastore/src/main/java/net/jami/datastore/dao/UserProfileDao.java

@@ -78,7 +78,7 @@ public class UserProfileDao extends AbstractDao<UserProfile> {
     }
 
     public List<UserProfile> searchFullName(String name) {
-        String query = "SELECT * FROM local_directory WHERE firstName LIKE ? OR lastName ?";
+        String query = "SELECT * FROM local_directory WHERE firstName LIKE ? OR lastName LIKE ?";
         name = name + "%";
         ResultSet rs = executeQuery(query, List.of(name, name));
         return getObjectsFromResultSet(rs);