content: /**
   * ﻿Copyright (C) 2007 - 2014 52°North Initiative for Geospatial Open Source
   * Software GmbH
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 as published
   * by the Free Software Foundation.
   *
   * If the program is linked with libraries which are licensed under one of
   * the following licenses, the combination of the program with the linked
   * library is not considered a "derivative work" of the program:
   *
   *       • Apache License, version 2.0
   *       • Apache Software License, version 1.0
   *       • GNU Lesser General Public License, version 3
   *       • Mozilla Public License, versions 1.0, 1.1 and 2.0
   *       • Common Development and Distribution License (CDDL), version 1.0
   *
   * Therefore the distribution of the program linked with libraries licensed
   * under the aforementioned licenses, is permitted by the copyright holders
   * if the distribution is compliant with both the GNU General Public
   * License version 2 and the aforementioned licenses.
   *
   * 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.
   */
  package org.n52.wps.transactional.algorithm;
  import java.io.ByteArrayInputStream;
  import java.io.InputStream;
  
  import net.opengis.wps.x100.OutputDataType;
  import net.opengis.wps.x100.OutputDescriptionType;
  import net.opengis.wps.x100.ProcessDescriptionType;
  
  import org.n52.wps.io.IOHandler;
  import org.n52.wps.io.IParser;
  import org.n52.wps.io.ParserFactory;
  import org.n52.wps.io.data.IData;
  import org.n52.wps.io.data.binding.complex.GTRasterDataBinding;
  import org.n52.wps.io.data.binding.complex.GTVectorDataBinding;
  import org.n52.wps.io.data.binding.literal.LiteralBooleanBinding;
  import org.n52.wps.io.data.binding.literal.LiteralDoubleBinding;
  import org.n52.wps.io.data.binding.literal.LiteralIntBinding;
  import org.n52.wps.io.data.binding.literal.LiteralStringBinding;
  import org.n52.wps.server.ExceptionReport;
  import org.n52.wps.io.BasicXMLTypeFactory;
  
  
  public class OutputParser {
  	
  	
  	/**
  	 * Handles the ComplexValueReference
  	 * @param class1 
  	 * @param input The client input
  	 * @throws ExceptionReport If the input (as url) is invalid, or there is an error while parsing the XML.
  	 */
  	protected  static String handleComplexValueReference(OutputDataType output) throws ExceptionReport{
  		return output.getReference().getHref();
  		
  	}
  	
  	/**
  	 * Handles the complexValue, which in this case should always include XML 
  	 * which can be parsed into a FeatureCollection.
  	 * @param class1 
  	 * @param input The client input
  	 * @throws ExceptionReport If error occured while parsing XML
  	 */
  	protected static IData handleComplexValue(OutputDataType output, ProcessDescriptionType processDescription) throws ExceptionReport{
  		String outputID = output.getIdentifier().getStringValue();
  		String complexValue = output.getData().getComplexData().toString();
  		OutputDescriptionType outputDesc = null;
  		for(OutputDescriptionType tempDesc : processDescription.getProcessOutputs().getOutputArray()) {
  			if((tempDesc.getIdentifier().getStringValue().startsWith(outputID))) {
  				outputDesc = tempDesc;
  				break;
  			}
  		}
  
  		if(outputDesc == null) {
  			throw new RuntimeException("output cannot be found in description for " + processDescription.getIdentifier().getStringValue() + "," + outputID);
  		}
  		
  		// get data specification from request
  		String schema = output.getData().getComplexData().getSchema();
  		String encoding = output.getData().getComplexData().getEncoding();
  		String format = output.getData().getComplexData().getMimeType();
  		
  		// check for null elements in request and replace by defaults
  		if(schema == null) {
  			schema = outputDesc.getComplexOutput().getDefault().getFormat().getSchema();
  		}
  		if(format == null) {
  			format = outputDesc.getComplexOutput().getDefault().getFormat().getMimeType();
  		}
  		if(encoding == null) {
  			encoding = outputDesc.getComplexOutput().getDefault().getFormat().getEncoding();
  		}
  		
  		Class outputDataType = determineOutputDataType(outputID, outputDesc);
  		
  		IParser parser = ParserFactory.getInstance().getParser(schema, format, encoding, outputDataType);
  //		if(parser == null) {
  //			parser = ParserFactory.getInstance().getSimpleParser();
  //		}
  		IData collection = null;
  		// encoding is UTF-8 (or nothing and we default to UTF-8)
  		// everything that goes to this condition should be inline xml data
  		if (encoding == null || encoding.equals("") || encoding.equalsIgnoreCase(IOHandler.DEFAULT_ENCODING)){
  			try {
  				InputStream stream = new ByteArrayInputStream(complexValue.getBytes());
  				collection = parser.parse(stream, format, schema);
  			}
  			catch(RuntimeException e) {
  				throw new ExceptionReport("Error occured, while XML parsing", 
  						ExceptionReport.NO_APPLICABLE_CODE, e);
  			}
  		}
  		else {
  			throw new ExceptionReport("parser does not support operation: " + parser.getClass().getName(), ExceptionReport.INVALID_PARAMETER_VALUE);
  		}
  		return collection;
  	}
  	
  	
  
  	private static Class determineOutputDataType(String outputID, OutputDescriptionType output) {
  			
  		if(output.isSetLiteralOutput()){
  			String datatype = output.getLiteralOutput().getDataType().getStringValue();
  			if(datatype.contains("tring")){
  				return LiteralStringBinding.class;
  			}
  			if(datatype.contains("ollean")){
  				return LiteralBooleanBinding.class;
  			}
  			if(datatype.contains("loat") || datatype.contains("ouble")){
  				return LiteralDoubleBinding.class;
  			}
  			if(datatype.contains("nt")){
  				return LiteralIntBinding.class;
  			}
  		}
  		if(output.isSetComplexOutput()){
  			String mimeType = output.getComplexOutput().getDefault().getFormat().getMimeType();
  			if(mimeType.contains("xml") || (mimeType.contains("XML"))){
  				return GTVectorDataBinding.class;
  			}else{
  				return GTRasterDataBinding.class;
  			}
  		}
  		
  		throw new RuntimeException("Could not determie internal inputDataType");
  	}
  
  	protected static IData handleLiteralValue(OutputDataType output) throws ExceptionReport {
  		
  		String parameter = output.getData().getLiteralData().getStringValue();
  		String xmlDataType = output.getData().getLiteralData().getDataType();
  		IData parameterObj = null;
  		try {
  			parameterObj = BasicXMLTypeFactory.getBasicJavaObject(xmlDataType, parameter);
  		}
  		catch(RuntimeException e) {
  			throw new ExceptionReport("The passed parameterValue: " + parameter + ", but should be of type: " + xmlDataType, ExceptionReport.INVALID_PARAMETER_VALUE);
  		}
  		if(parameterObj == null) {
  			throw new ExceptionReport("XML datatype as LiteralParameter is not supported by the server: dataType " + xmlDataType, 
  					ExceptionReport.INVALID_PARAMETER_VALUE);
  		}
  		return parameterObj;
  		
  	}
  	
  	/**
  	 * Handles BBoxValue
  	 * @param input The client input
  	 * @param class1 
  	 */
  	protected static IData handleBBoxValue(OutputDataType input) throws ExceptionReport{
  		//String inputID = input.getIdentifier().getStringValue();
  		throw new ExceptionReport("BBox is not supported", ExceptionReport.OPERATION_NOT_SUPPORTED);
  	}
  
  }
  