| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| ScreenLoader |
|
| 0.0;0 |
| 1 | package org.apache.turbine.modules; | |
| 2 | ||
| 3 | ||
| 4 | /* | |
| 5 | * Licensed to the Apache Software Foundation (ASF) under one | |
| 6 | * or more contributor license agreements. See the NOTICE file | |
| 7 | * distributed with this work for additional information | |
| 8 | * regarding copyright ownership. The ASF licenses this file | |
| 9 | * to you under the Apache License, Version 2.0 (the | |
| 10 | * "License"); you may not use this file except in compliance | |
| 11 | * with the License. You may obtain a copy of the License at | |
| 12 | * | |
| 13 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 14 | * | |
| 15 | * Unless required by applicable law or agreed to in writing, | |
| 16 | * software distributed under the License is distributed on an | |
| 17 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
| 18 | * KIND, either express or implied. See the License for the | |
| 19 | * specific language governing permissions and limitations | |
| 20 | * under the License. | |
| 21 | */ | |
| 22 | ||
| 23 | ||
| 24 | import org.apache.turbine.Turbine; | |
| 25 | import org.apache.turbine.pipeline.PipelineData; | |
| 26 | ||
| 27 | /** | |
| 28 | * The purpose of this class is to allow one to load and execute | |
| 29 | * Screen modules. | |
| 30 | * | |
| 31 | * @author <a href="mailto:mbryson@mont.mindspring.com">Dave Bryson</a> | |
| 32 | * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a> | |
| 33 | * @author <a href="mailto:peter@courcoux.biz">Peter Courcoux</a> | |
| 34 | * @version $Id: ScreenLoader.java 1854786 2019-03-04 18:29:18Z tv $ | |
| 35 | */ | |
| 36 | public class ScreenLoader | |
| 37 | extends GenericLoader<Screen> | |
| 38 | { | |
| 39 | /** The single instance of this class. */ | |
| 40 | 102 | private static ScreenLoader instance = new ScreenLoader(); |
| 41 | ||
| 42 | /** | |
| 43 | * These ctor's are private to force clients to use getInstance() | |
| 44 | * to access this class. | |
| 45 | */ | |
| 46 | private ScreenLoader() | |
| 47 | { | |
| 48 | 102 | super(Screen.class, |
| 49 | 264 | () -> Turbine.getConfiguration().getInt(Screen.CACHE_SIZE_KEY, |
| 50 | Screen.CACHE_SIZE_DEFAULT)); | |
| 51 | 102 | } |
| 52 | ||
| 53 | /** | |
| 54 | * Attempts to load and execute the external Screen. This is used | |
| 55 | * when you want to execute a Screen which returns its output via | |
| 56 | * a String instead of out the data.getResponse() value. | |
| 57 | * This allows you to easily chain the execution of Screen modules | |
| 58 | * together. | |
| 59 | * | |
| 60 | * @param pipelineData Turbine information. | |
| 61 | * @param name Name of object that will execute the screen. | |
| 62 | * @return the output of the screen module | |
| 63 | * @throws Exception a generic exception. | |
| 64 | */ | |
| 65 | public String eval(PipelineData pipelineData, String name) | |
| 66 | throws Exception | |
| 67 | { | |
| 68 | // Execute screen | |
| 69 | 12 | return getAssembler(name).build(pipelineData); |
| 70 | } | |
| 71 | ||
| 72 | /** | |
| 73 | * Attempts to load and execute the Screen. This is used when you | |
| 74 | * want to execute a Screen which returns its output via the | |
| 75 | * data.getResponse() object. | |
| 76 | * | |
| 77 | * @param pipelineData Turbine information. | |
| 78 | * @param name Name of object that will execute the screen. | |
| 79 | * @throws Exception a generic exception. | |
| 80 | */ | |
| 81 | @Override | |
| 82 | public void exec(PipelineData pipelineData, String name) | |
| 83 | throws Exception | |
| 84 | { | |
| 85 | 0 | this.eval(pipelineData, name); |
| 86 | 0 | } |
| 87 | ||
| 88 | /** | |
| 89 | * The method through which this class is accessed. | |
| 90 | * | |
| 91 | * @return The single instance of this class. | |
| 92 | */ | |
| 93 | public static ScreenLoader getInstance() | |
| 94 | { | |
| 95 | 291 | return instance; |
| 96 | } | |
| 97 | } |