001: /*
002: * The Apache Software License, Version 1.1
003: *
004: * Copyright (c) 1999 The Apache Software Foundation. All rights
005: * reserved.
006: *
007: * Redistribution and use in source and binary forms, with or without
008: * modification, are permitted provided that the following conditions
009: * are met:
010: *
011: * 1. Redistributions of source code must retain the above copyright
012: * notice, this list of conditions and the following disclaimer.
013: *
014: * 2. Redistributions in binary form must reproduce the above copyright
015: * notice, this list of conditions and the following disclaimer in
016: * the documentation and/or other materials provided with the
017: * distribution.
018: *
019: * 3. The end-user documentation included with the redistribution, if
020: * any, must include the following acknowlegement:
021: * "This product includes software developed by the
022: * Apache Software Foundation (http://www.apache.org/)."
023: * Alternately, this acknowlegement may appear in the software itself,
024: * if and wherever such third-party acknowlegements normally appear.
025: *
026: * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
027: * Foundation" must not be used to endorse or promote products derived
028: * from this software without prior written permission. For written
029: * permission, please contact apache@apache.org.
030: *
031: * 5. Products derived from this software may not be called "Apache"
032: * nor may "Apache" appear in their names without prior written
033: * permission of the Apache Group.
034: *
035: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
036: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
037: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
038: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
039: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
040: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
041: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
042: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
043: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
044: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
045: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
046: * SUCH DAMAGE.
047: * ====================================================================
048: *
049: * This software consists of voluntary contributions made by many
050: * individuals on behalf of the Apache Software Foundation. For more
051: * information on the Apache Software Foundation, please see
052: * <http://www.apache.org/>.
053: *
054: */
055: package com.sun.portal.providers.jsp.jasper3.jasper.compiler;
056:
057: import java.util.Hashtable;
058: import com.sun.portal.providers.jsp.jasper3.jasper.JasperException;
059: import com.sun.portal.providers.jsp.jasper3.jasper.runtime.JspRuntimeLibrary;
060: import java.lang.reflect.Method;
061:
062: import com.sun.portal.providers.jsp.jasper3.jasper.Constants;
063:
064: /**
065: * Generator for <jsp:getProperty.../>
066: *
067: * @author Mandar Raje
068: */
069: public class GetPropertyGenerator extends GeneratorBase implements
070: ServiceMethodPhase {
071: Hashtable attrs;
072: BeanRepository beanInfo;
073:
074: public GetPropertyGenerator(Mark start, Mark stop, Hashtable attrs,
075: BeanRepository beanInfo) {
076: this .attrs = attrs;
077: this .beanInfo = beanInfo;
078: }
079:
080: public void generate(ServletWriter writer, Class phase)
081: throws JasperException {
082: String name = getAttribute("name");
083: String property = getAttribute("property");
084:
085: // Should ideally throw exception here if the bean
086: // is not present in the pageContext.
087:
088: if (beanInfo.checkVariable(name)) {
089: // Bean is defined using useBean.
090: // introspect at compile time
091: Class cls = beanInfo.getBeanType(name);
092: String clsName = cls.getName();
093: java.lang.reflect.Method meth = JspRuntimeLibrary
094: .getReadMethod(cls, property);
095:
096: String methodName = meth.getName();
097: writer.println("out.print(JspRuntimeLibrary.toString("
098: + "(((" + clsName + ")pageContext.findAttribute("
099: + "\"" + name + "\"))." + methodName + "())));");
100: } else {
101: // Get the class name and then introspect at runtime.
102: writer
103: .println("out.print(JspRuntimeLibrary.toString(JspRuntimeLibrary."
104: + "handleGetProperty(pageContext.findAttribute("
105: + "\""
106: + name
107: + "\"), \""
108: + property
109: + "\")));");
110: }
111: }
112:
113: public String getAttribute(String name) {
114: return (attrs != null) ? (String) attrs.get(name) : null;
115: }
116: }
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