1 /* 2 * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.jfr.consumer; 27 28 import java.util.List; 29 30 import jdk.jfr.ValueDescriptor; 31 import jdk.jfr.internal.Type; 32 33 /** 34 * Abstract factory for creating specialized types 35 */ 36 abstract class ObjectFactory<T> { 37 38 public static ObjectFactory<?> create(Type type, TimeConverter timeConverter) { 39 switch (type.getName()) { 40 case "java.lang.Thread": 41 return RecordedThread.createFactory(type, timeConverter); 42 case Type.ORACLE_TYPE_PREFIX + "StackFrame": 43 return RecordedFrame.createFactory(type, timeConverter); 44 case Type.ORACLE_TYPE_PREFIX + "Method": 45 return RecordedMethod.createFactory(type, timeConverter); 46 case Type.ORACLE_TYPE_PREFIX + "ThreadGroup": 47 return RecordedThreadGroup.createFactory(type, timeConverter); 48 case Type.ORACLE_TYPE_PREFIX + "StackTrace": 49 return RecordedStackTrace.createFactory(type, timeConverter); 50 case Type.ORACLE_TYPE_PREFIX + "ClassLoader": 51 return RecordedClassLoader.createFactory(type, timeConverter); 52 case "java.lang.Class": 53 return RecordedClass.createFactory(type, timeConverter); 54 } 55 return null; 56 } 57 58 private final List<ValueDescriptor> valueDescriptors; 59 60 ObjectFactory(Type type) { 61 this.valueDescriptors = type.getFields(); 62 } 63 64 T createObject(long id, Object value) { 65 if (value == null) { 66 return null; 67 } 68 if (value instanceof Object[]) { 69 return createTyped(valueDescriptors, id, (Object[]) value); 70 } 71 throw new InternalError("Object factory must have struct type"); 72 } 73 74 abstract T createTyped(List<ValueDescriptor> valueDescriptors, long id, Object[] values); 75 }