1 files changed, 73 insertions, 0 deletions
diff --git a/das-java/contrib/ldap/das.ldap/src/main/java/org/apache/tuscany/das/ldap/oid/create/OIDCreatorHelper.java b/das-java/contrib/ldap/das.ldap/src/main/java/org/apache/tuscany/das/ldap/oid/create/OIDCreatorHelper.java
new file mode 100644
index 0000000000..ad82a61514
--- /dev/null
+++ b/das-java/contrib/ldap/das.ldap/src/main/java/org/apache/tuscany/das/ldap/oid/create/OIDCreatorHelper.java
@@ -0,0 +1,73 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.tuscany.das.ldap.oid.create;
+
+public class OIDCreatorHelper
+{
+    private static int MAX_OID_SEGMENT_LENGTH = 8;
+    /**
+     * Calculate segmented OID.
+     * 
+     * @param oid the oid
+     * 
+     * @return the string
+     * 
+     * @throws Exception the exception
+     * 
+     * Note that the OID must be divided
+     * into segments less than 9 characters
+     * long.  This is an ApacheDS restriction
+     * on OID segment length.
+     */
+    public static String calculateSegmentedOID(String oid) throws Exception
+    {
+        if (oid.length() < 10)
+        {
+            throw new Exception("The length of the oid must be greater than 9 in order to ensure uniqueness.");
+        }
+        int oidLength = oid.length();
+        int numberOfPeriods  = oidLength / MAX_OID_SEGMENT_LENGTH;
+        
+        int beginIndex = 0;
+        int endIndex = MAX_OID_SEGMENT_LENGTH;
+        
+        String segmentedOID = 
+            oid.substring(beginIndex, endIndex ) + ".";
+
+        for (int i = 2; i < numberOfPeriods; i++)
+        {
+            beginIndex = (i-1) * MAX_OID_SEGMENT_LENGTH + 1;
+            endIndex = i * MAX_OID_SEGMENT_LENGTH;
+            segmentedOID +=  oid.substring( beginIndex, endIndex ) + ".";
+        }
+        int finalSegmentLength = oid.length() - (endIndex + 2);
+        
+        if ( finalSegmentLength > MAX_OID_SEGMENT_LENGTH )
+        {
+            segmentedOID += oid.substring( endIndex + 1,endIndex + 9  ) + ".";
+            segmentedOID += oid.substring( endIndex + 10, oid.length()  );
+        }
+        else
+        {
+            segmentedOID += oid.substring( endIndex + 1, oid.length()  );            
+        }
+        return segmentedOID;
+    }
+}