| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.uima.jcas; |
| |
| import java.util.ArrayList; |
| |
| /** |
| * Maintains a registry of JCas cover classes that have been loaded. Methods on this |
| * class are called from JCas cover classes (that is, classes generated by JCasGen). |
| * They are not intended to be called directly from user-written code. |
| */ |
| public class JCasRegistry { |
| private static ArrayList loadedJCasClasses = new ArrayList(); |
| |
| /** |
| * Registers a JCas cover class with this registry. The registry will assign |
| * it a unique index, which is then used by the cover-class to identify itself |
| * to the JCas implementation. |
| * |
| * @return the unique index value for this class. |
| */ |
| public static synchronized int register(Class aJCasCoverClass) { |
| loadedJCasClasses.add(aJCasCoverClass); |
| return loadedJCasClasses.size() - 1; |
| } |
| |
| /** |
| * For a particular type, return true if that type should have run-time checking for use of fields |
| * defined in the JCas Model which are not present in the CAS. If false, all fields |
| * in the JCas must be in the CAS type system at instantiation time, or an exception is thrown; |
| * this allows the runtime to skip this test. |
| * <p> |
| * This is reserved for future use; it currently always returns true. |
| */ |
| public static boolean getFeatOkTst(String fullyQualTypeName) { |
| return true; |
| } |
| |
| /** |
| * Gets the number of cover classes that have been registered. |
| * |
| * @return the number of registered JCas cover classes |
| */ |
| public static synchronized int getNumberOfRegisteredClasses() { |
| return loadedJCasClasses.size(); |
| } |
| |
| /** |
| * Gets the JCas cover class for a given index. |
| * |
| * @param aIndex the index |
| * |
| * @return the JCas cover class that was assigned the value <code>aIndex</code> during its registration, |
| * <code>null</code> if none. |
| */ |
| public static synchronized Class getClassForIndex(int aIndex) { |
| if (aIndex >= 0 && aIndex < loadedJCasClasses.size()) |
| return (Class)loadedJCasClasses.get(aIndex); |
| else |
| return null; |
| } |
| } |