001: /*
002: * JSPstore.java
003: *
004: *
005: * Copyright (c) 2003 Rimfaxe ApS (www.rimfaxe.com).
006: * All rights reserved.
007: *
008: * This package is written by Lars Andersen <lars@rimfaxe.com>
009: * and licensed by Rimfaxe ApS.
010: *
011: * Redistribution and use in source and binary forms, with or without
012: * modification, are permitted provided that the following conditions
013: * are met:
014: *
015: * 1. Redistributions of source code must retain the above copyright
016: * notice, this list of conditions and the following disclaimer.
017: *
018: * 2. Redistributions in binary form must reproduce the above copyright
019: * notice, this list of conditions and the following disclaimer in
020: * the documentation and/or other materials provided with the
021: * distribution.
022: *
023: * 3. The end-user documentation included with the redistribution, if
024: * any, must include the following acknowlegement:
025: * "This product includes software developed by Rimfaxe ApS
026: (www.rimfaxe.com)"
027: * Alternately, this acknowlegement may appear in the software itself,
028: * if and wherever such third-party acknowlegements normally appear.
029: *
030: * 4. The names "Rimfaxe", "Rimfaxe Software", "Lars Andersen" and
031: * "Rimfaxe WebServer" must not be used to endorse or promote products
032: * derived from this software without prior written permission. For written
033: * permission, please contact info@rimfaxe.com
034: *
035: * 5. Products derived from this software may not be called "Rimfaxe"
036: * nor may "Rimfaxe" appear in their names without prior written
037: * permission of the Rimfaxe ApS.
038: *
039: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
040: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
041: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
042: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
043: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
044: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
045: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
046: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
047: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
048: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
049: * SUCH DAMAGE.
050: *
051: */
052:
053: package com.rimfaxe.webserver.servletapi.jsp;
054:
055: import java.util.*;
056: import org.apache.naming.resources.Resource;
057: import com.rimfaxe.webserver.WebContext;
058: import com.rimfaxe.util.RimfaxeList;
059: import com.rimfaxe.webserver.compiler.*;
060: import com.rimfaxe.webserver.compiler.jsp.*;
061:
062: /**
063: *
064: * @author Lars Andersen
065: */
066: public class JSPstore {
067: WebContext webcontext;
068:
069: HashMap active_jsp = new HashMap();
070: HashMap deferred_jsp = new HashMap();
071: RimfaxeList compile_list = new RimfaxeList();
072:
073: /** Creates a new instance of JSPstore */
074: public JSPstore(WebContext webcontext) {
075: this .webcontext = webcontext;
076: }
077:
078: public JSPclass lookupJSP(JSPclass jsp_class) {
079: // Check if this JSP page is readily available
080: JSPclass jsp = (JSPclass) active_jsp.get(jsp_class
081: .getFullClassName());
082:
083: if (jsp != null) {
084: //System.out.println("Already compiled and loaded");
085: return jsp;
086: }
087:
088: // Should this JSP page be compiled ?
089:
090: if (deferred_jsp.get(jsp_class.getFullClassName()) == null) {
091:
092: //Should we wait for a compile to end?
093: if (!compile_list.contains(jsp_class)) {
094:
095: // can we load it without compiling?
096: // else start compiler
097: if (!loadPrecompiledJSP(jsp_class)) {
098: compile_list.add(jsp_class);
099: compileJSP(jsp_class);
100: }
101:
102: } else {
103: //Wait for compile to end
104: waitForCompile(jsp_class);
105: }
106:
107: return jsp_class;
108: } else {
109:
110: jsp = (JSPclass) deferred_jsp.get(jsp_class
111: .getFullClassName());
112: return jsp;
113: }
114:
115: }
116:
117: public void waitForCompile(JSPclass jsp_class) {
118:
119: int count = 0;
120: boolean done = false;
121: while (!done) {
122: count++;
123: if (count > 30)
124: done = true;
125:
126: if (!compile_list.contains(jsp_class))
127: done = true;
128:
129: try {
130: Thread.sleep(100);
131: } catch (Exception e) {
132: }
133:
134: }
135:
136: // Try to get from active
137: // try to get from deferred
138: // Mark as unavailable
139: }
140:
141: public boolean loadPrecompiledJSP(JSPclass jsp_class) {
142: com.rimfaxe.webserver.compiler.jsp.JspC jspcompiler = new com.rimfaxe.webserver.compiler.jsp.JspC(
143: jsp_class, this .webcontext);
144:
145: if (jspcompiler.loadNative()) {
146: //System.out.println("Precompiled loaded -> "+jsp_class.getFullClassName());
147: active_jsp.put(jsp_class.getFullClassName(), jsp_class);
148: return true;
149: }
150: return false;
151: }
152:
153: public void compileJSP(JSPclass jsp_class) {
154: //System.out.println("Compile -> "+jsp_class.getFullClassName());
155:
156: com.rimfaxe.webserver.compiler.jsp.JspC jspcompiler = new com.rimfaxe.webserver.compiler.jsp.JspC(
157: jsp_class, this .webcontext);
158:
159: try {
160: System.out.print("Compile -> " + jsp_class.getJspPage()
161: + " ");
162: jspcompiler.compileJSP();
163: active_jsp.put(jsp_class.getFullClassName(), jsp_class);
164: System.out.println("");
165:
166: } catch (JspToJavaException e) {
167: System.out
168: .println("Compilation Failed, JspToJavaException");
169: jsp_class.setError(jsp_class.JSP_ERROR);
170: jsp_class.setErrorMsg("" + e);
171: this .deferred_jsp.put(jsp_class.getFullClassName(),
172: jsp_class);
173:
174: } catch (NativeCompilationException e) {
175: System.out
176: .println("Compilation Failed, NativeCompilationException");
177: jsp_class.setError(jsp_class.COMPILE_ERROR);
178: jsp_class.setErrorMsg("" + e);
179: this .deferred_jsp.put(jsp_class.getFullClassName(),
180: jsp_class);
181:
182: } catch (Exception e) {
183: System.out.println("Compilation Failed, Exception");
184:
185: System.out.println("" + e);
186: jsp_class.setError(jsp_class.COMPILE_ERROR);
187: //jsp_class.appendErrorMsg("<br>"+e+"<br>");
188: jsp_class.writeStacktrace(e);
189: this.deferred_jsp.put(jsp_class.getFullClassName(),
190: jsp_class);
191:
192: }
193:
194: compile_list.removeObject(jsp_class);
195: }
196: }
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