/*
 * Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
 *
 * This file is part of Resin(R) Open Source
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Resin Open Source 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 2 of the License, or
 * (at your option) any later version.
 *
 * Resin Open Source 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, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Resin Open Source; if not, write to the
 *   Free Software Foundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Rodrigo Westrupp
 */

package com.caucho.amber.type;

import com.caucho.java.JavaWriter;
import com.caucho.util.L10N;

import java.io.IOException;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

/**
 * The type of a property.
 */
public class CharacterArrayType extends AmberArrayType {
  private static final L10N L = new L10N(CharacterArrayType.class);

  private CharacterArrayType()
  {
  }

  /**
   * Returns the singleton CharacterArray type.
   */
  public static CharacterArrayType create()
  {
    return new CharacterArrayType();
  }

  /**
   * Returns the type name.
   */
  public String getName()
  {
    return "java.lang.Character[]";
  }

  /**
   * Returns the java type.
   */
  public String getJavaTypeName()
  {
    return "java.lang.Character[]";
  }

  /**
   * Returns the java type for a single entry.
   */
  public String getJavaObjectTypeName()
  {
    return "java.lang.Character";
  }

  /**
   * Returns the corresponding primitive array
   * type name.
   */
  public String getPrimitiveArrayTypeName()
  {
    return "char[]";
  }

  /**
   * Generates a string to load the property.
   */
  public int generateLoad(JavaWriter out, String rs,
                          String indexVar, int index)
    throws IOException
  {
    out.print(rs + ".getString(" + indexVar + " + " + index + ")");
    out.print(" == null || " + rs + ".wasNull() ? null : ");
    out.print(rs + ".getString(" + indexVar + " + " + index + ").toCharArray()");

    return index + 1;
  }

  /**
   * Generates a string to load the property.
   */
  public int generateLoadNative(JavaWriter out, int index)
    throws IOException
  {
    out.print("CharacterArrayType.toCharArray(");
    out.print("rs.getString(columnNames[" + index + "]), ");
    out.print("rs.wasNull())");

    return index + 1;
  }

  /**
   * Generates a string to set the property.
   */
  public void generateSet(JavaWriter out, String pstmt,
                          String index, String value)
    throws IOException
  {
    out.println("if (" + value + " == null)");
    out.println("  " + pstmt + ".setNull(" + index + "++, java.sql.Types.CHAR);");
    out.println("else {");
    out.println("  java.lang.Character[] super_temp_" + index + " = " + value + ";");
    out.println("  char[] temp_" + index + " = new char[super_temp_" + index + ".length];");
    out.println("  for (int i=0; i < temp_" + index + ".length; i++)");
    out.println("    temp_" + index + "[i] = super_temp_" + index + "[i].charValue();");
    out.println("  " + pstmt + ".setString(" + index + "++, new String(temp_" + index + "));");
    out.println("}");
  }

  /**
   * Sets the value.
   */
  public void setParameter(PreparedStatement pstmt, int index, Object value)
    throws SQLException
  {
    Character[] wrapperCharacter = (Character []) value;

    char[] primitiveCharacter = new char[wrapperCharacter.length];
    for (int i=0; i<wrapperCharacter.length; i++)
      primitiveCharacter[i] = wrapperCharacter[i].charValue();

    pstmt.setString(index, new String(primitiveCharacter));
  }

  /**
   * Gets the value.
   */
  public Object getObject(ResultSet rs, int index)
    throws SQLException
  {
    char[] primitiveCharacter = rs.getString(index).toCharArray();

    if (rs.wasNull())
      return null;

    Character[] wrapperCharacter = new Character[primitiveCharacter.length];
    for (int i=0; i < primitiveCharacter.length; i++)
      wrapperCharacter[i] = new Character(primitiveCharacter[i]);

    return wrapperCharacter;
  }

  /**
   * Gets the value.
   */
  public static Character []toCharArray(String v, boolean isNull)
    throws SQLException
  {
    if (isNull)
      return null;
    
    char[] primitiveCharacter = v.toCharArray();

    Character[] wrapperCharacter = new Character[primitiveCharacter.length];
    for (int i=0; i < primitiveCharacter.length; i++)
      wrapperCharacter[i] = new Character(primitiveCharacter[i]);

    return wrapperCharacter;
  }
}