All Downloads are FREE. Search and download functionalities are using the official Maven repository.

org.apache.taglibs.standard.tag.common.sql.DriverTag Maven / Gradle / Ivy

The newest version!
/*
 * 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.ServletContext;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspTagException;
import javax.servlet.jsp.PageContext;
import javax.servlet.jsp.tagext.TagSupport;

/**
 * 

Tag handler for <Driver> in JSTL, used to create * a simple DataSource for prototyping.

* * @author Hans Bergsten */ public class DriverTag extends TagSupport { private static final String DRIVER_CLASS_NAME = "javax.servlet.jsp.jstl.sql.driver"; private static final String JDBC_URL = "javax.servlet.jsp.jstl.sql.jdbcURL"; private static final String USER_NAME = "javax.servlet.jsp.jstl.sql.userName"; private static final String PASSWORD = "javax.servlet.jsp.jstl.sql.password"; private String driverClassName; private String jdbcURL; private int scope = PageContext.PAGE_SCOPE; private String userName; private String var; //********************************************************************* // Accessor methods public void setDriver(String driverClassName) { this.driverClassName = driverClassName; } public void setJdbcURL(String jdbcURL) { this.jdbcURL = jdbcURL; } /** * Setter method for the scope of the variable to hold the * result. * */ public void setScope(String scopeName) { if ("page".equals(scopeName)) { scope = PageContext.PAGE_SCOPE; } else if ("request".equals(scopeName)) { scope = PageContext.REQUEST_SCOPE; } else if ("session".equals(scopeName)) { scope = PageContext.SESSION_SCOPE; } else if ("application".equals(scopeName)) { scope = PageContext.APPLICATION_SCOPE; } } public void setUserName(String userName) { this.userName = userName; } public void setVar(String var) { this.var = var; } //********************************************************************* // Tag logic public int doStartTag() throws JspException { DataSourceWrapper ds = new DataSourceWrapper(); try { ds.setDriverClassName(getDriverClassName()); } catch (Exception e) { throw new JspTagException("Invalid driver class name: " + e.toString(), e); } ds.setJdbcURL(getJdbcURL()); ds.setUserName(getUserName()); ds.setPassword(getPassword()); pageContext.setAttribute(var, ds, scope); return SKIP_BODY; } //********************************************************************* // Private utility methods private String getDriverClassName() { if (driverClassName != null) { return driverClassName; } ServletContext application = pageContext.getServletContext(); return application.getInitParameter(DRIVER_CLASS_NAME); } private String getJdbcURL() { if (jdbcURL != null) { return jdbcURL; } ServletContext application = pageContext.getServletContext(); return application.getInitParameter(JDBC_URL); } private String getUserName() { if (userName != null) { return userName; } ServletContext application = pageContext.getServletContext(); return application.getInitParameter(USER_NAME); } private String getPassword() { ServletContext application = pageContext.getServletContext(); return application.getInitParameter(PASSWORD); } }




© 2015 - 2024 Weber Informatics LLC | Privacy Policy