/*
 * Copyright (c) 1998-2006 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 SoftwareFoundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Scott Ferguson
 */

package com.caucho.jstl.el;

import java.io.*;
import java.util.*;

import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;
import javax.servlet.jsp.jstl.core.*;
import javax.servlet.jsp.jstl.fmt.*;
import javax.servlet.jsp.jstl.sql.SQLExecutionTag;

import javax.servlet.jsp.el.ELException;
import javax.servlet.jsp.el.VariableResolver;

import com.caucho.vfs.*;
import com.caucho.util.*;
import com.caucho.jsp.*;
import com.caucho.el.*;
import com.caucho.jstl.ParamContainerTag;

/**
 * Looks up an i18n message from a bundle and prints it.
 */
public class SqlDateParamTag extends TagSupport {
  private static L10N L = new L10N(SqlDateParamTag.class);
  
  private Expr _valueExpr;
  private Expr _typeExpr;

  /**
   * Sets the value
   *
   * @param value the JSP-EL expression for the value.
   */
  public void setValue(Expr value)
  {
    _valueExpr = value;
  }

  /**
   * Sets the type
   *
   * @param type the JSP-EL expression for the type.
   */
  public void setType(Expr type)
  {
    _typeExpr = type;
  }

  /**
   * Process the tag.
   */
  public int doStartTag()
    throws JspException
  {
    try {
      VariableResolver env = (VariableResolver) pageContext;
    
      Object value = _valueExpr.evalObject(env);

      long time = 0;

      Object result = null;

      if (value == null) {
      }
      else if (value instanceof Number)
	time = ((Number) value).longValue();
      else if (value instanceof java.util.Date)
	time = ((java.util.Date) value).getTime();
      else if (value instanceof java.sql.Date)
	time = ((java.sql.Date) value).getTime();
      else
	throw new JspException(L.l("sql:dateParam requires at date at `{0}'", value));

      if (value == null)
	result = null;
      else if (_typeExpr == null)
	result = new java.sql.Timestamp(time);
      else {
	String type = _typeExpr.evalString(env);

	if (type.equals("time"))
	  result = new java.sql.Time(time);
	else if (type.equals("date"))
	  result = new java.sql.Date(time);
	else
	  result = new java.sql.Timestamp(time);
      }

      Tag parent = getParent();
      for (;
	   parent != null && ! (parent instanceof SQLExecutionTag);
	   parent = parent.getParent()) {
      }

      if (parent == null)
	throw new JspException(L.l("sql:dateParam requires sql:query parent.")); 

      SQLExecutionTag tag = (SQLExecutionTag) parent;

      tag.addSQLParameter(result);
    
      return SKIP_BODY;
    } catch (ELException e) {
      throw new JspException(e);
    }
  }
}
