| /* |
| * Copyright 2002,2004 The Apache Software Foundation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.jelly.tags.beanshell; |
| |
| import bsh.EvalError; |
| |
| import org.apache.commons.jelly.JellyContext; |
| import org.apache.commons.jelly.JellyException; |
| import org.apache.commons.jelly.expression.Expression; |
| import org.apache.commons.jelly.expression.ExpressionFactory; |
| |
| /** Represents a factory of <a href="http://www.beanshell.org">beanshell</a> expressions |
| * |
| * @author <a href="mailto:jstrachan@apache.org">James Strachan</a> |
| * @version $Revision: 1.5 $ |
| */ |
| public class BeanShellExpressionFactory implements ExpressionFactory { |
| |
| /** |
| * A helper method to return the JellyInterpreter for the given JellyContext |
| */ |
| public static JellyInterpreter getInterpreter(JellyContext context) throws EvalError { |
| |
| /** |
| * @todo when we can unify the BeanShell and Jelly variable scopes we can share a single |
| * BeanShell context for each JellyContext. |
| * For now lets create a new one each time, which is slower. |
| */ |
| JellyInterpreter interpreter = new JellyInterpreter(); |
| interpreter.setJellyContext(context); |
| return interpreter; |
| /* |
| JellyInterpreter interpreter |
| = (JellyInterpreter) context.getVariable( "org.apache.commons.jelly.beanshell.JellyInterpreter" ); |
| if ( interpreter == null ) { |
| interpreter = new JellyInterpreter(); |
| interpreter.setJellyContext(context); |
| context.setVariable( "org.apache.commons.jelly.beanshell.JellyInterpreter", interpreter ); |
| } |
| return interpreter; |
| */ |
| } |
| |
| |
| // ExpressionFactory interface |
| //------------------------------------------------------------------------- |
| public Expression createExpression(String text) throws JellyException { |
| return new BeanShellExpression(text); |
| } |
| } |