content: package com.japisoft.editix.action.dtdschema.generator.transformer;
  
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import com.japisoft.editix.action.dtdschema.generator.MetaNode;
  import com.japisoft.editix.action.dtdschema.generator.Transformer;
  
  /**
  This program is available under two licenses : 
  
  1. For non commercial usage : 
  
  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.
  
  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
  
  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  
  2. For commercial usage :
  
  You need to get a commercial license for source usage at : 
  
  http://www.editix.com/buy.html
  
  Copyright (c) 2018 Alexandre Brillant - JAPISOFT SARL - http://www.japisoft.com
  
  @author Alexandre Brillant - abrillant@japisoft.com
  @author JAPISOFT SARL - http://www.japisoft.com
  
  */
  public abstract class AbstractTransformer implements Transformer {
  
  	protected boolean sequenceMode = false;
  	
  	public void setSequenceMode( boolean sequenceMode ) {
  		this.sequenceMode = sequenceMode;
  	}
  
  	public String transform(MetaNode root, List<MetaNode> nodeCollection) {
  		Map<String,Boolean> processed = new HashMap<String,Boolean>();
  		StringBuffer sb = new StringBuffer();
  		initTransform( root, sb );
  		for ( int i = 0; i < nodeCollection.size(); i++ ) {
  			String name = ( ( MetaNode )nodeCollection.get( i ) ).getName();
  			if ( name != null ) {
  				if ( processed.containsKey( name ) )
  					continue;
  			}			
  			generateMetaNode( (MetaNode)nodeCollection.get( i ), sb );
  			if ( name != null ) {
  				processed.put( name, Boolean.TRUE );
  			}			
  		}
  		closeTransform( root, sb );
  		return sb.toString();
  	}
  
  	protected void initTransform( MetaNode root, StringBuffer sb ) {}
  	protected void generateMetaNode( MetaNode node, StringBuffer sb ) {};
  	protected void closeTransform( MetaNode root, StringBuffer sb ) {}
  	
  }
  