Package org.apache.taglibs.standard.tag.common.sql

Source Code of org.apache.taglibs.standard.tag.common.sql.DateParamTagSupport

/*
* The contents of this file are subject to the terms
* of the Common Development and Distribution License
* (the "License").  You may not use this file except
* in compliance with the License.
*
* You can obtain a copy of the license at
* glassfish/bootstrap/legal/CDDLv1.0.txt or
* https://glassfish.dev.java.net/public/CDDLv1.0.html.
* See the License for the specific language governing
* permissions and limitations under the License.
*
* When distributing Covered Code, include this CDDL
* HEADER in each file and include the License file at
* glassfish/bootstrap/legal/CDDLv1.0.txt.  If applicable,
* add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your
* own identifying information: Portions Copyright [yyyy]
* [name of copyright owner]
*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
*
* Portions Copyright Apache Software Foundation.
*/
package org.apache.taglibs.standard.tag.common.sql;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspTagException;
import javax.servlet.jsp.jstl.sql.SQLExecutionTag;
import javax.servlet.jsp.tagext.TagSupport;

import org.apache.taglibs.standard.resources.Resources;


/**
* <p>Tag handler for &lt;Param&gt; in JSTL, used to set
* parameter values for a SQL statement.</p>
*
* @author Justyna Horwat
*/

public abstract class DateParamTagSupport extends TagSupport {

    //*********************************************************************
    // Private constants
   
    private static final String TIMESTAMP_TYPE = "timestamp";
    private static final String TIME_TYPE = "time";
    private static final String DATE_TYPE = "date";
 

    //*********************************************************************
    // Protected state

    protected String type;
    protected java.util.Date value;


    //*********************************************************************
    // Constructor

    public DateParamTagSupport() {
        super();
        init();
    }

    private void init() {
        value = null;
        type = null;
    }


    //*********************************************************************
    // Tag logic

    public int doEndTag() throws JspException {
  SQLExecutionTag parent = (SQLExecutionTag)
      findAncestorWithClass(this, SQLExecutionTag.class);
  if (parent == null) {
      throw new JspTagException(
                Resources.getMessage("SQL_PARAM_OUTSIDE_PARENT"));
  }

        if (value != null) {
            convertValue();
        }

  parent.addSQLParameter(value);
  return EVAL_PAGE;
    }


    //*********************************************************************
    // Private utility methods

    private void convertValue() throws JspException {

  if ((type == null) || (type.equalsIgnoreCase(TIMESTAMP_TYPE))) {
      if (!(value instanceof java.sql.Timestamp)) {
    value = new java.sql.Timestamp(value.getTime());
      }
  } else if (type.equalsIgnoreCase(TIME_TYPE)) {
      if (!(value instanceof java.sql.Time)) {
    value = new java.sql.Time(value.getTime());
      }
  } else if (type.equalsIgnoreCase(DATE_TYPE)) {
      if (!(value instanceof java.sql.Date)) {
    value = new java.sql.Date(value.getTime());
      }
  } else {
      throw new JspException(
                Resources.getMessage("SQL_DATE_PARAM_INVALID_TYPE", type));
  }
    }
}
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