Package com.caucho.jstl.rt

Source Code of com.caucho.jstl.rt.SqlParamTag

/*
* 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 SoftwareFoundation, Inc.
*   59 Temple Place, Suite 330
*   Boston, MA 02111-1307  USA
*
* @author Scott Ferguson
*/

package com.caucho.jstl.rt;

import com.caucho.jsp.PageContextImpl;
import com.caucho.util.L10N;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.jstl.sql.SQLExecutionTag;
import javax.servlet.jsp.tagext.BodyTagSupport;
import javax.servlet.jsp.tagext.Tag;

/**
* Looks up an i18n message from a bundle and prints it.
*/
public class SqlParamTag extends BodyTagSupport {
  private static L10N L = new L10N(SqlParamTag.class);
 
  private Object _value;
  private boolean _hasValueSet;

  /**
   * Sets the value
   *
   * @param value the the value.
   */
  public void setValue(Object value)
  {
    _value = value;
    _hasValueSet = true;
  }

  /**
   * Process the tag.
   */
  public int doStartTag()
    throws JspException
  {
    if (! _hasValueSet)
      return EVAL_BODY_BUFFERED;

    PageContextImpl pageContext = (PageContextImpl) this.pageContext;
   
    Object value = _value;

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

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

    SQLExecutionTag tag = (SQLExecutionTag) parent;

    tag.addSQLParameter(value);
   
    return SKIP_BODY;
  }

  /**
   * Process the tag.
   */
  public int doEndTag()
    throws JspException
  {
    if (_hasValueSet)
      return EVAL_PAGE;
     
    String value;

    if (bodyContent != null)
      value = bodyContent.getString().trim();
    else
      value = "";

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

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

    SQLExecutionTag tag = (SQLExecutionTag) parent;

    tag.addSQLParameter(value);
   
    return EVAL_PAGE;
  }
}
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