| 1 | /* |
| 2 | |
| 3 | Derby - Class org.apache.derby.impl.services.reflect.LoadedGeneratedClass |
| 4 | |
| 5 | Copyright 1998, 2004 The Apache Software Foundation or its licensors, as applicable. |
| 6 | |
| 7 | Licensed under the Apache License, Version 2.0 (the "License"); |
| 8 | you may not use this file except in compliance with the License. |
| 9 | You may obtain a copy of the License at |
| 10 | |
| 11 | http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | |
| 13 | Unless required by applicable law or agreed to in writing, software |
| 14 | distributed under the License is distributed on an "AS IS" BASIS, |
| 15 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 16 | See the License for the specific language governing permissions and |
| 17 | limitations under the License. |
| 18 | |
| 19 | */ |
| 20 | |
| 21 | package org.apache.derby.impl.services.reflect; |
| 22 | |
| 23 | import org.apache.derby.iapi.services.loader.GeneratedByteCode; |
| 24 | import org.apache.derby.iapi.services.loader.GeneratedClass; |
| 25 | import org.apache.derby.iapi.services.loader.ClassFactory; |
| 26 | |
| 27 | import org.apache.derby.iapi.services.context.Context; |
| 28 | |
| 29 | import org.apache.derby.iapi.error.StandardException; |
| 30 | import org.apache.derby.iapi.reference.SQLState; |
| 31 | |
| 32 | import org.apache.derby.iapi.services.loader.ClassInfo; |
| 33 | |
| 34 | |
| 35 | public abstract class LoadedGeneratedClass |
| 36 | implements GeneratedClass |
| 37 | { |
| 38 | |
| 39 | /* |
| 40 | ** Fields |
| 41 | */ |
| 42 | |
| 43 | private final ClassInfo ci; |
| 44 | private final int classLoaderVersion; |
| 45 | |
| 46 | /* |
| 47 | ** Constructor |
| 48 | */ |
| 49 | |
| 50 | public LoadedGeneratedClass(ClassFactory cf, Class jvmClass) { |
| 51 | ci = new ClassInfo(jvmClass); |
| 52 | classLoaderVersion = cf.getClassLoaderVersion(); |
| 53 | } |
| 54 | |
| 55 | /* |
| 56 | ** Public methods from Generated Class |
| 57 | */ |
| 58 | |
| 59 | public String getName() { |
| 60 | return ci.getClassName(); |
| 61 | } |
| 62 | |
| 63 | public Object newInstance(Context context) throws StandardException { |
| 64 | |
| 65 | Throwable t; |
| 66 | try { |
| 67 | GeneratedByteCode ni = (GeneratedByteCode) ci.getNewInstance(); |
| 68 | ni.initFromContext(context); |
| 69 | ni.setGC(this); |
| 70 | ni.postConstructor(); |
| 71 | return ni; |
| 72 | |
| 73 | } catch (InstantiationException ie) { |
| 74 | t = ie; |
| 75 | } catch (IllegalAccessException iae) { |
| 76 | t = iae; |
| 77 | } catch (java.lang.reflect.InvocationTargetException ite) { |
| 78 | t = ite; |
| 79 | } catch (LinkageError le) { |
| 80 | t = le; |
| 81 | } |
| 82 | |
| 83 | throw StandardException.newException(SQLState.GENERATED_CLASS_INSTANCE_ERROR, t, getName()); |
| 84 | } |
| 85 | |
| 86 | public final int getClassLoaderVersion() { |
| 87 | return classLoaderVersion; |
| 88 | } |
| 89 | |
| 90 | /* |
| 91 | ** Methods for subclass |
| 92 | */ |
| 93 | protected Class getJVMClass() { |
| 94 | return ci.getClassObject(); |
| 95 | } |
| 96 | } |