MNEMONIC-455: Simply the Factory proxy construction
diff --git a/mnemonic-core/src/main/java/org/apache/mnemonic/EntityFactoryProxyHelper.java b/mnemonic-core/src/main/java/org/apache/mnemonic/EntityFactoryProxyHelper.java
new file mode 100644
index 0000000..04d777d
--- /dev/null
+++ b/mnemonic-core/src/main/java/org/apache/mnemonic/EntityFactoryProxyHelper.java
@@ -0,0 +1,110 @@
+/*
+ * 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.mnemonic;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+public class EntityFactoryProxyHelper<D extends Durable>
+ implements EntityFactoryProxy {
+
+ protected Method fcreatemtd, frestoremtd;
+
+ public EntityFactoryProxyHelper(Class<D> clazz) throws ClassNotFoundException, NoSuchMethodException {
+ Class c = Class.forName(clazz.getName() + "Factory");
+ Method[] fmtds = c.getDeclaredMethods();
+ for (int i = 0; i < fmtds.length; ++i) {
+ if (fmtds[i].getName().equals("create") && fmtds[i].getParameterCount() == 4) {
+ fcreatemtd = fmtds[i];
+ break;
+ }
+ }
+ if (null == fcreatemtd) {
+ throw new NoSuchMethodException("Not found proper factory create(...) method");
+ }
+ for (int i = 0; i < fmtds.length; ++i) {
+ if (fmtds[i].getName().equals("restore") && fmtds[i].getParameterCount() == 5) {
+ frestoremtd = fmtds[i];
+ break;
+ }
+ }
+ if (null == frestoremtd) {
+ throw new NoSuchMethodException("Not found proper factory restore(...) method");
+ }
+ }
+
+ @Override
+ public <A extends RestorableAllocator<A>> D create(
+ A allocator, EntityFactoryProxy[] factoryproxys,
+ DurableType[] gfields, boolean autoreclaim) {
+ Object o = null;
+ try {
+ o = fcreatemtd.invoke(null, allocator, factoryproxys, gfields, autoreclaim);
+ } catch (IllegalAccessException e) {
+ e.printStackTrace();
+ } catch (InvocationTargetException e) {
+ e.printStackTrace();
+ }
+ return (D)o;
+ }
+
+ @Override
+ public <A extends RestorableAllocator<A>> D create(
+ ParameterHolder<A> ph) {
+ Object o = null;
+ try {
+ o = fcreatemtd.invoke(null, ph.getAllocator(),
+ ph.getEntityFactoryProxies(), ph.getGenericTypes(), ph.getAutoReclaim());
+ } catch (IllegalAccessException e) {
+ e.printStackTrace();
+ } catch (InvocationTargetException e) {
+ e.printStackTrace();
+ }
+ return (D)o;
+ }
+
+ @Override
+ public <A extends RestorableAllocator<A>> D restore(
+ A allocator, EntityFactoryProxy[] factoryproxys,
+ DurableType[] gfields, long phandler, boolean autoreclaim) {
+ Object o = null;
+ try {
+ o = frestoremtd.invoke(null, allocator, factoryproxys, gfields, phandler, autoreclaim);
+ } catch (IllegalAccessException e) {
+ e.printStackTrace();
+ } catch (InvocationTargetException e) {
+ e.printStackTrace();
+ }
+ return (D)o;
+ }
+
+ @Override
+ public <A extends RestorableAllocator<A>> D restore(
+ ParameterHolder<A> ph) {
+ Object o = null;
+ try {
+ o = frestoremtd.invoke(null, ph.getAllocator(),
+ ph.getEntityFactoryProxies(), ph.getGenericTypes(), ph.getHandler(), ph.getAutoReclaim());
+ } catch (IllegalAccessException e) {
+ e.printStackTrace();
+ } catch (InvocationTargetException e) {
+ e.printStackTrace();
+ }
+ return (D)o;
+ }
+}
