01: /*
02: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
03: *
04: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
05: *
06: * Portions Copyright Apache Software Foundation.
07: *
08: * The contents of this file are subject to the terms of either the GNU
09: * General Public License Version 2 only ("GPL") or the Common Development
10: * and Distribution License("CDDL") (collectively, the "License"). You
11: * may not use this file except in compliance with the License. You can obtain
12: * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
13: * or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
14: * language governing permissions and limitations under the License.
15: *
16: * When distributing the software, include this License Header Notice in each
17: * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
18: * Sun designates this particular file as subject to the "Classpath" exception
19: * as provided by Sun in the GPL Version 2 section of the License file that
20: * accompanied this code. If applicable, add the following below the License
21: * Header, with the fields enclosed by brackets [] replaced by your own
22: * identifying information: "Portions Copyrighted [year]
23: * [name of copyright owner]"
24: *
25: * Contributor(s):
26: *
27: * If you wish your version of this file to be governed by only the CDDL or
28: * only the GPL Version 2, indicate your decision by adding "[Contributor]
29: * elects to include this software in this distribution under the [CDDL or GPL
30: * Version 2] license." If you don't indicate a single choice of license, a
31: * recipient has the option to distribute your version of this file under
32: * either the CDDL, the GPL Version 2 or to extend the choice of license to
33: * its licensees as provided above. However, if you add GPL Version 2 code
34: * and therefore, elected the GPL Version 2 license, then the option applies
35: * only if the new code is made subject to such option by the copyright
36: * holder.
37: */
38: package org.apache.taglibs.standard.tag.common.sql;
39:
40: import javax.servlet.jsp.JspException;
41: import javax.servlet.jsp.JspTagException;
42: import javax.servlet.jsp.jstl.sql.SQLExecutionTag;
43: import javax.servlet.jsp.tagext.BodyTagSupport;
44:
45: import org.apache.taglibs.standard.resources.Resources;
46:
47: /**
48: * <p>Tag handler for <Param> in JSTL, used to set
49: * parameter values for a SQL statement.</p>
50: *
51: * @author Hans Bergsten
52: */
53:
54: public abstract class ParamTagSupport extends BodyTagSupport {
55: protected Object value;
56:
57: //*********************************************************************
58: // Tag logic
59:
60: public int doEndTag() throws JspException {
61: SQLExecutionTag parent = (SQLExecutionTag) findAncestorWithClass(
62: this , SQLExecutionTag.class);
63: if (parent == null) {
64: throw new JspTagException(Resources
65: .getMessage("SQL_PARAM_OUTSIDE_PARENT"));
66: }
67:
68: Object paramValue = null;
69: if (value != null) {
70: paramValue = value;
71: } else if (bodyContent != null) {
72: paramValue = bodyContent.getString().trim();
73: if (((String) paramValue).trim().length() == 0) {
74: paramValue = null;
75: }
76: }
77:
78: parent.addSQLParameter(paramValue);
79: return EVAL_PAGE;
80: }
81: }
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