/*
    * Copyright 2009 the original author or authors.
    * 
    * Licensed 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.openehealth.ipf.commons.ihe.xds.core.validate;
  
  import static org.apache.commons.lang3.Validate.notNull;
  import static org.openehealth.ipf.commons.ihe.xds.core.validate.ValidationMessage.*;
  import static org.openehealth.ipf.commons.ihe.xds.core.validate.ValidatorAssertions.metaDataAssert;
  
  import java.util.regex.Pattern;
  
  
  /**
   * Validator for OIDs.
   * @author Jens Riemschneider
   */
  public class OIDValidator implements ValueValidator {
      private static final Pattern OID_PATTERN =
              Pattern.compile("[1-9][0-9]*(\\.(0|([1-9][0-9]*)))+");
  
      @Override
      public void validate(String oid) throws XDSMetaDataException {
          notNull(oid, "oid cannot be null");
          
          metaDataAssert(oid.length() <= 64, OID_TOO_LONG, oid);
          metaDataAssert(OID_PATTERN.matcher(oid).matches(), INVALID_OID, oid);
      }
  }