1 package org.apache.velocity.script; 2 3 /* 4 * Licensed to the Apache Software Foundation (ASF) under one 5 * or more contributor license agreements. See the NOTICE file 6 * distributed with this work for additional information 7 * regarding copyright ownership. The ASF licenses this file 8 * to you under the Apache License, Version 2.0 (the 9 * "License"); you may not use this file except in compliance 10 * with the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, 15 * software distributed under the License is distributed on an 16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 17 * KIND, either express or implied. See the License for the 18 * specific language governing permissions and limitations 19 * under the License. 20 */ 21 22 import org.apache.velocity.Template; 23 import org.apache.velocity.VelocityContext; 24 25 import javax.script.CompiledScript; 26 import javax.script.ScriptContext; 27 import javax.script.ScriptEngine; 28 import javax.script.ScriptException; 29 import java.io.StringWriter; 30 import java.io.Writer; 31 32 public class VelocityCompiledScript extends CompiledScript 33 { 34 protected VelocityScriptEngine engine; 35 protected Template template; 36 VelocityCompiledScript(VelocityScriptEngine e, Template t)37 public VelocityCompiledScript(VelocityScriptEngine e, Template t) 38 { 39 engine = e; 40 template = t; 41 } 42 43 @Override eval(ScriptContext scriptContext)44 public Object eval(ScriptContext scriptContext) throws ScriptException 45 { 46 VelocityContext velocityContext = VelocityScriptEngine.getVelocityContext(scriptContext); 47 Writer out = scriptContext.getWriter(); 48 if (out == null) 49 { 50 out = new StringWriter(); 51 scriptContext.setWriter(out); 52 } 53 try 54 { 55 template.merge(velocityContext, out); 56 out.flush(); 57 } 58 catch (Exception exp) 59 { 60 throw new ScriptException(exp); 61 } 62 return out; 63 } 64 65 @Override getEngine()66 public ScriptEngine getEngine() 67 { 68 return engine; 69 } 70 } 71