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:
056: package com.sun.portal.providers.jsp.jasper3.jasper.compiler;
057:
058: import java.io.File;
059:
060: import com.sun.portal.providers.jsp.jasper3.jasper.JspCompilationContext;
061: import com.sun.portal.providers.jsp.jasper3.jasper.JasperException;
062:
063: /**
064: * JspCompiler is an implementation of Compiler with a funky code
065: * mangling and code generation scheme!
066: *
067: * The reason that it is both a sub-class of compiler and an implementation
068: * of mangler is because the isOutDated method that is overridden and the
069: * name mangulation both depend on the actual existance of other class and
070: * java files. I.e. the value of a mangled name is a function of both the
071: * name to be mangled and also of the state of the scratchdir.
072: *
073: * @author Anil K. Vijendran
074: */
075: public class JspCompiler extends Compiler {
076:
077: public JspCompiler(JspCompilationContext ctxt) {
078: super (ctxt);
079:
080: JspMangler mangler = new JspMangler(ctxt.getJspFile(), ctxt
081: .getOutputDir());
082: setMangler(mangler);
083: }
084:
085: /**
086: * Determines whether the current JSP class is older than the JSP file
087: * from whence it came
088: */
089: public boolean isOutDated() {
090: File jspReal = null;
091: boolean outDated;
092:
093: String realPath = ctxt.getRealPath(ctxt.getJspFile());
094: if (realPath == null) {
095: // jsp must have been deleted, remove associated java/class files
096: removeGeneratedFiles();
097: return true;
098: }
099:
100: jspReal = new File(realPath);
101:
102: File classFile = new File(mangler.getClassFileName());
103: long classFileLastMod = classFile.lastModified();
104: if (classFileLastMod == 0L) {
105: // class file does not exist
106: outDated = true;
107: } else {
108: outDated = classFileLastMod < jspReal.lastModified();
109: }
110:
111: return outDated;
112: }
113: }
|