/**
 * <copyright> Copyright 2006 by Know-Center, Graz, Austria </copyright>
 * PDF-AS has been contracted by the E-Government Innovation Center EGIZ, a
 * joint initiative of the Federal Chancellery Austria and Graz University of
 * Technology.
 *
 * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
 * the European Commission - subsequent versions of the EUPL (the "Licence");
 * You may not use this work except in compliance with the Licence.
 * You may obtain a copy of the Licence at:
 * http://www.osor.eu/eupl/
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the Licence is distributed on an "AS IS" basis,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Licence for the specific language governing permissions and
 * limitations under the Licence.
 *
 * This product combines work with different licenses. See the "NOTICE" text
 * file for details on the various modules and licenses.
 * The "NOTICE" text file is part of the distribution. Any derivative works
 * that you distribute must include a readable copy of the "NOTICE" text file.
 */
package at.gv.egiz.pdfas.framework;

import java.io.InputStream;

import at.gv.egiz.pdfas.framework.input.DataSource;
import at.gv.egiz.pdfas.framework.input.PdfDataSource;
import at.gv.egiz.pdfas.framework.input.TextDataSource;
import at.gv.egiz.pdfas.framework.output.DataSink;

/**
 * Factory for creating DataSources.
 * 
 * @author wprinz
 */
public interface DataStrategy
{
  
  public TextDataSource createTextDataSource (String text);
  
  public PdfDataSource createPdfDataSource (InputStream is);
  
  public PdfDataSource createPdfDataSource (DataSource other, int length);
  
  /**
   * @deprecated - use streaming.
   * @param pdf
   * @return
   */
  public PdfDataSource createPdfDataSource (byte [] pdf);

  public void destroyDataSource (DataSource dataSource);
  
  public DataSink createDataSink ();
}