1 /* 2 * Copyright (C) 2010 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.clearsilver.jsilver.adaptor; 18 19 import com.google.clearsilver.jsilver.JSilver; 20 import com.google.clearsilver.jsilver.JSilverOptions; 21 import com.google.clearsilver.jsilver.data.DataFactory; 22 import com.google.clearsilver.jsilver.data.DefaultData; 23 import com.google.clearsilver.jsilver.data.HDFDataFactory; 24 25 import org.clearsilver.ClearsilverFactory; 26 import org.clearsilver.DelegatedHdf; 27 import org.clearsilver.HDF; 28 29 /** 30 * ClearsilverFactory that adapts JSilver for use as any HDF/CS rendering engine. 31 */ 32 public class JSilverFactory implements ClearsilverFactory { 33 34 private static final JSilverOptions DEFAULT_OPTIONS = new JSilverOptions(); 35 36 private final boolean unwrapDelegatedHdfs; 37 private final JSilver jSilver; 38 private final JSilverOptions options; 39 private final DataFactory dataFactory; 40 41 private final LoadPathToFileCache loadPathCache; 42 43 /** 44 * Default constructor. enables unwrapping of DelegatedHdfs. 45 */ 46 public JSilverFactory() { 47 this(DEFAULT_OPTIONS); 48 } 49 50 public JSilverFactory(JSilverOptions options) { 51 this(options, true); 52 } 53 54 public JSilverFactory(JSilverOptions options, boolean unwrapDelegatedHdfs) { 55 this(new JSilver(null, options), unwrapDelegatedHdfs); 56 } 57 58 /** 59 * This constructor is available for those who already use JSilver and want to use the same 60 * attributes and caches for their Java Clearsilver Framework code. Users who use only JCF should 61 * use a different constructor. 62 * 63 * @param jSilver existing instance of JSilver to use for parsing and rendering. 64 * @param unwrapDelegatedHdfs whether to unwrap DelegetedHdfs or not before casting. 65 */ 66 public JSilverFactory(JSilver jSilver, boolean unwrapDelegatedHdfs) { 67 this.unwrapDelegatedHdfs = unwrapDelegatedHdfs; 68 this.jSilver = jSilver; 69 this.options = jSilver.getOptions(); 70 if (this.options.getLoadPathCacheSize() == 0) { 71 this.loadPathCache = null; 72 } else { 73 this.loadPathCache = new LoadPathToFileCache(this.options.getLoadPathCacheSize()); 74 } 75 this.dataFactory = 76 new HDFDataFactory(options.getIgnoreAttributes(), options.getStringInternStrategy()); 77 } 78 79 @Override 80 public JCs newCs(HDF hdf) { 81 if (unwrapDelegatedHdfs) { 82 hdf = DelegatedHdf.getFullyUnwrappedHdf(hdf); 83 } 84 return new JCs(JHdf.cast(hdf), jSilver, loadPathCache); 85 } 86 87 @Override 88 public JCs newCs(HDF hdf, HDF globalHdf) { 89 if (unwrapDelegatedHdfs) { 90 hdf = DelegatedHdf.getFullyUnwrappedHdf(hdf); 91 globalHdf = DelegatedHdf.getFullyUnwrappedHdf(globalHdf); 92 } 93 JCs cs = new JCs(JHdf.cast(hdf), jSilver, loadPathCache); 94 cs.setGlobalHDF(globalHdf); 95 return cs; 96 } 97 98 @Override 99 public JHdf newHdf() { 100 return new JHdf(new DefaultData(), dataFactory, loadPathCache, options); 101 } 102 } 103