J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * reserved comment block |
| 3 | * DO NOT REMOVE OR ALTER! |
| 4 | */ |
| 5 | /* |
| 6 | * Copyright 1999-2004 The Apache Software Foundation. |
| 7 | * |
| 8 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 9 | * you may not use this file except in compliance with the License. |
| 10 | * 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, software |
| 15 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 16 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 17 | * See the License for the specific language governing permissions and |
| 18 | * limitations under the License. |
| 19 | * |
| 20 | */ |
| 21 | package com.sun.org.apache.xml.internal.security.utils; |
| 22 | |
| 23 | import com.sun.org.apache.xpath.internal.CachedXPathAPI; |
| 24 | import org.w3c.dom.Document; |
| 25 | |
| 26 | |
| 27 | /** |
| 28 | * @author Raul Benito |
| 29 | */ |
| 30 | public class CachedXPathAPIHolder { |
| 31 | static java.util.logging.Logger log = |
| 32 | java.util.logging.Logger.getLogger(CachedXPathAPIHolder.class.getName()); |
| 33 | |
| 34 | static ThreadLocal local=new ThreadLocal(); |
| 35 | static ThreadLocal localDoc=new ThreadLocal(); |
| 36 | |
| 37 | /** |
| 38 | * Sets the doc for the xpath transformation. Resets the cache if needed |
| 39 | * @param doc |
| 40 | */ |
| 41 | public static void setDoc(Document doc) { |
| 42 | if (localDoc.get()!=doc) { |
| 43 | CachedXPathAPI cx=(CachedXPathAPI)local.get(); |
| 44 | if (cx==null) { |
| 45 | cx=new CachedXPathAPI(); |
| 46 | local.set(cx); |
| 47 | localDoc.set(doc); |
| 48 | return; |
| 49 | } |
| 50 | //Different docs reset. |
| 51 | cx.getXPathContext().reset(); |
| 52 | localDoc.set(doc); |
| 53 | } |
| 54 | } |
| 55 | /** |
| 56 | * @return the cachexpathapi for this thread |
| 57 | */ |
| 58 | public static CachedXPathAPI getCachedXPathAPI() { |
| 59 | CachedXPathAPI cx=(CachedXPathAPI)local.get(); |
| 60 | if (cx==null) { |
| 61 | cx=new CachedXPathAPI(); |
| 62 | local.set(cx); |
| 63 | localDoc.set(null); |
| 64 | } |
| 65 | return cx; |
| 66 | } |
| 67 | } |