/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 2001-2003 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Axis" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
package org.apache.axis.wsdl.toJava;

import org.apache.axis.wsdl.symbolTable.BindingEntry;
import org.apache.axis.wsdl.symbolTable.Parameter;
import org.apache.axis.wsdl.symbolTable.Parameters;
import org.apache.axis.wsdl.symbolTable.SymbolTable;
import org.apache.axis.wsdl.symbolTable.TypeEntry;

import javax.wsdl.Binding;
import javax.wsdl.BindingOperation;
import javax.wsdl.Operation;
import javax.wsdl.OperationType;
import javax.xml.rpc.holders.BooleanHolder;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.List;

/**
 * This is Wsdl2java's implementation template writer.  It writes the <BindingName>Impl.java
 * file which contains the <bindingName>Impl class.
 */
public class JavaImplWriter extends JavaClassWriter
{
   protected Binding binding;
   protected SymbolTable symbolTable;
   protected BindingEntry bEntry;

   /**
    * Constructor.
    */
   protected JavaImplWriter(Emitter emitter,
                            BindingEntry bEntry,
                            SymbolTable symbolTable)
   {
      super(emitter, bEntry.getName() + "Impl", "templateImpl");
      this.binding = bEntry.getBinding();
      this.symbolTable = symbolTable;
      this.bEntry = bEntry;
   } // ctor

   /**
    * Write the body of the binding's stub file.
    */
   protected void writeFileBody(PrintWriter pw) throws IOException
   {
      List operations = binding.getBindingOperations();
      for (int i = 0; i < operations.size(); ++i)
      {
         BindingOperation operation = (BindingOperation)operations.get(i);
         Operation ptOperation = operation.getOperation();
         OperationType type = ptOperation.getStyle();
         Parameters parameters =
                 bEntry.getParameters(operation.getOperation());

         // These operation types are not supported.  The signature
         // will be a string stating that fact.
         if (type == OperationType.NOTIFICATION
                 || type == OperationType.SOLICIT_RESPONSE)
         {
            pw.println(parameters.signature);
            pw.println();
         }
         else
         {
            writeOperation(pw, parameters);
         }
      }
   } // writeFileBody

   /**
    * Returns the appropriate implements text
    *
    * @return " implements <classes>"
    */
   protected String getImplementsText()
   {
      String portTypeName = (String)bEntry.getDynamicVar(JavaBindingWriter.INTERFACE_NAME);
      String implementsText = "implements " + portTypeName;
      return implementsText;
   }

   /**
    * Write the implementation template for the given operation.
    */
   protected void writeOperation(PrintWriter pw, Parameters parms) throws IOException
   {
      pw.println(parms.signature + " {");

      // Fill in any out parameter holders
      Iterator iparam = parms.list.iterator();
      while (iparam.hasNext())
      {
         Parameter param = (Parameter)iparam.next();
         if (param.getMode() == Parameter.OUT)
         {
            // write a constructor for each of the parameters

            BooleanHolder bThrow = new BooleanHolder(false);
            String constructorString =
                    Utils.getConstructorForParam(param, symbolTable, bThrow);
            if (bThrow.value)
            {
               pw.println("        try {");
            }
            pw.println("        " + Utils.xmlNameToJava(param.getName())
                    + ".value = " + constructorString + ";");
            if (bThrow.value)
            {
               pw.println("        } catch (Exception e) {");
               pw.println("        }");
            }
         }
      }

      // Print the return statement
      if (parms.returnParam != null)
      {
         TypeEntry returnType = parms.returnParam.getType();
         pw.print("        return ");

         if (Utils.isPrimitiveType(returnType))
         {
            String returnString = returnType.getName();
            if ("boolean".equals(returnString))
            {
               pw.println("false;");
            }
            else if ("byte".equals(returnString))
            {
               pw.println("(byte)-3;");
            }
            else if ("short".equals(returnString))
            {
               pw.println("(short)-3;");
            }
            else
            {
               pw.println("-3;");
            }
         }
         else
         {
            pw.println("null;");
         }
      }
      pw.println("    }");
      pw.println();
   } // writeOperation

} // class JavaImplWriter
