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/*
* 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;
}
}
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