| /* |
| * Copyright (c) 2003 The Visigoth Software Society. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, if |
| * any, must include the following acknowledgement: |
| * "This product includes software developed by the |
| * Visigoth Software Society (http://www.visigoths.org/)." |
| * Alternately, this acknowledgement may appear in the software itself, |
| * if and wherever such third-party acknowledgements normally appear. |
| * |
| * 4. Neither the name "FreeMarker", "Visigoth", nor any of the names of the |
| * project contributors may be used to endorse or promote products derived |
| * from this software without prior written permission. For written |
| * permission, please contact visigoths@visigoths.org. |
| * |
| * 5. Products derived from this software may not be called "FreeMarker" or "Visigoth" |
| * nor may "FreeMarker" or "Visigoth" appear in their names |
| * without prior written permission of the Visigoth Software Society. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE VISIGOTH SOFTWARE SOCIETY OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Visigoth Software Society. For more |
| * information on the Visigoth Software Society, please see |
| * http://www.visigoths.org/ |
| */ |
| |
| package freemarker.core; |
| |
| import java.util.List; |
| |
| import freemarker.ext.beans.BeansWrapper; |
| import freemarker.template.ObjectWrapper; |
| import freemarker.template.Template; |
| import freemarker.template.TemplateException; |
| import freemarker.template.TemplateMethodModelEx; |
| import freemarker.template.TemplateModel; |
| import freemarker.template.TemplateModelException; |
| |
| /** |
| * A built-in that allows us to instantiate an instance of a java class. |
| * Usage is something like: <tt><#assign foobar = "foo.bar.MyClass"?new()></tt>; |
| */ |
| class NewBI extends BuiltIn |
| { |
| |
| static final Class BEAN_MODEL_CLASS = freemarker.ext.beans.BeanModel.class; |
| static Class JYTHON_MODEL_CLASS; |
| static { |
| try { |
| JYTHON_MODEL_CLASS = Class.forName("freemarker.ext.jython.JythonModel"); |
| } catch (Throwable e) { |
| JYTHON_MODEL_CLASS = null; |
| } |
| } |
| |
| TemplateModel _eval(Environment env) |
| throws TemplateException |
| { |
| return new ConstructorFunction(target.evalAndCoerceToString(env), env, target.getTemplate()); |
| } |
| |
| class ConstructorFunction implements TemplateMethodModelEx { |
| |
| private final Class cl; |
| private final Environment env; |
| |
| public ConstructorFunction(String classname, Environment env, Template template) throws TemplateException { |
| this.env = env; |
| cl = env.getNewBuiltinClassResolver().resolve(classname, env, template); |
| if (!TemplateModel.class.isAssignableFrom(cl)) { |
| throw new _MiscTemplateException(NewBI.this, env, new Object[] { |
| "Class ", cl.getName(), " does not implement freemarker.template.TemplateModel" }); |
| } |
| if (BEAN_MODEL_CLASS.isAssignableFrom(cl)) { |
| throw new _MiscTemplateException(NewBI.this, env, new Object[] { |
| "Bean Models cannot be instantiated using the ?", key, " built-in" }); |
| } |
| if (JYTHON_MODEL_CLASS != null && JYTHON_MODEL_CLASS.isAssignableFrom(cl)) { |
| throw new _MiscTemplateException(NewBI.this, env, new Object[] { |
| "Jython Models cannot be instantiated using the ?", key, " built-in" }); |
| } |
| } |
| |
| public Object exec(List arguments) throws TemplateModelException { |
| ObjectWrapper ow = env.getObjectWrapper(); |
| BeansWrapper bw = |
| ow instanceof BeansWrapper |
| ? (BeansWrapper)ow |
| : BeansWrapper.getDefaultInstance(); |
| return bw.newInstance(cl, arguments); |
| } |
| } |
| } |