parent.java

java 报表 to office文档： 本包由java语言开发

/* ====================================================================
   Copyright 2002-2004   Apache Software Foundation

   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.apache.poi.poifs.property;

import java.util.Iterator;

import java.io.IOException;

/**
 * Behavior for parent (directory) properties
 *
 * @author Marc [e-mail]
 */

public interface Parent
    extends Child
{

    /**
     * Get an iterator over the children of this Parent; all elements
     * are instances of Property.
     *
     * @return Iterator of children; may refer to an empty collection
     */

    public Iterator getChildren();

    /**
     * Add a new child to the collection of children
     *
     * @param property the new child to be added; must not be null
     *
     * @exception IOException if the Parent already has a child with
     *                        the same name
     */

    public void addChild(final Property property)
        throws IOException;

    /**
     * Set the previous Child
     *
     * @param child the new 'previous' child; may be null, which has
     *              the effect of saying there is no 'previous' child
     */

    public void setPreviousChild(final Child child);

    /**
     * Set the next Child
     *
     * @param child the new 'next' child; may be null, which has the
     *              effect of saying there is no 'next' child
     */

    public void setNextChild(final Child child);

    /** *** end methods from interface Child *** */

}   // end public interface Parent