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    1   /*   Copyright 2004 The Apache Software Foundation
    2    *
    3    *   Licensed under the Apache License, Version 2.0 (the "License");
    4    *   you may not use this file except in compliance with the License.
    5    *   You may obtain a copy of the License at
    6    *
    7    *       http://www.apache.org/licenses/LICENSE-2.0
    8    *
    9    *   Unless required by applicable law or agreed to in writing, software
   10    *   distributed under the License is distributed on an "AS IS" BASIS,
   11    *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   12    *   See the License for the specific language governing permissions and
   13    *  limitations under the License.
   14    */
   15   
   16   package org.apache.xmlbeans;
   17   
   18   import javax.xml.namespace.QName;
   19   
   20   /**
   21    * This class is used to programatically validate the contents of an
   22    * XML element.Call to both {@link #next} and {@link #peek}
   23    * will return true if the element
   24    * with the provided name is allowed at the current position in the element
   25    * content, the difference being that {@link #next} will advance
   26    * the current position, while {@link #peek} won't.
   27    *
   28    * @see SchemaType#getElementSequencer
   29    */
   30   public interface SchemaTypeElementSequencer
   31   {
   32       /**
   33        * Returns true if the element with the given name is valid at the
   34        * current position. Advances the current position.
   35        */
   36       boolean next(QName elementName);
   37   
   38       /**
   39        * Return true if the element with the given name is valid at the
   40        * current position. Does not advance the current position.
   41        */
   42       boolean peek(QName elementName);
   43   }

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