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commit b21d28a7015692cda8ab58f02d13eec75fdcc434
Author: Andi Huber <ahu...@apache.org>
AuthorDate: Fri May 18 21:00:12 2018 +0200
ISIS-1948: Internal API: introduces _Proxies (stubs only)
Task-Url: https://issues.apache.org/jira/browse/ISIS-1948
---
.../internal/proxy/ProxyFactory_Default.java | 110 +++++++++++++++++++++
.../isis/applib/internal/proxy/_Proxies.java | 47 +++++++++
.../isis/applib/internal/proxy/package-info.java | 28 ++++++
3 files changed, 185 insertions(+)
diff --git
a/core/applib/src/main/java/org/apache/isis/applib/internal/proxy/ProxyFactory_Default.java
b/core/applib/src/main/java/org/apache/isis/applib/internal/proxy/ProxyFactory_Default.java
new file mode 100644
index 0000000..37709c7
--- /dev/null
+++
b/core/applib/src/main/java/org/apache/isis/applib/internal/proxy/ProxyFactory_Default.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.isis.applib.internal.proxy;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationHandler;
+
+import org.apache.isis.applib.internal.exceptions._Exceptions;
+import org.apache.isis.applib.internal.proxy._Proxies.ProxyFactory;
+
+/**
+ *
+ * package private mixin for utility class {@link _Proxies}
+ *
+ * ProxyFactory default implementation.
+ *
+ */
+class ProxyFactory_Default<T> implements ProxyFactory<T> {
+
+ private final Class<?> extending;
+ private final Class<?>[] implementing;
+
+ ProxyFactory_Default(Class<?> extending, Class<?>[] implementing) {
+ this.extending = extending;
+ this.implementing = implementing;
+
+ // TODO ignore return !m.getName().equals("finalize") ||
m.isBridge();
+
+ // this is the default, I believe
+ // calling it here only because I know that it will throw an exception
if the code were
+ // in the future changed such that caching is invalid
+ // (ie fail fast if future change could introduce a bug)
+ //TODO proxyFactory.setUseCache(true);
+
+ }
+
+ @Override
+ public T createInstance(InvocationHandler handler) {
+
+// final Class<T> enhancedClass = proxyFactory.createClass();
+// final Proxy proxy = (Proxy) Util.createInstance(enhancedClass);
+//
+// proxy.setHandler(new MethodHandler() {
+// @Override
+// public Object invoke(Object self, Method thisMethod, Method
proceed, Object[] args) throws Throwable {
+// return handler.invoke(self, thisMethod, args);
+// }
+// });
+//
+// return (T) proxy;
+
+ //TODO
+// } catch (final InstantiationException |
+// IllegalAccessException |
+// InvocationTargetException e) {
+// throw new IsisException(e);
+//}
+
+ // TODO Auto-generated method stub
+ _Exceptions.throwNotImplemented();
+ return null;
+ }
+
+
+// final Class<T> proxySubclass = proxyFactory.createClass();
+//
+// final T newInstance;
+// if(mixedInIfAny == null) {
+// newInstance = proxySubclass.newInstance();
+// } else {
+// Constructor<?> constructor = findConstructor(proxySubclass,
mixedInIfAny);
+// newInstance = (T) constructor.newInstance(mixedInIfAny);
+// }
+// final ProxyObject proxyObject = (ProxyObject) newInstance;
+// proxyObject.setHandler(methodHandler);
+//
+// return newInstance;
+
+ private <T> Constructor<?> findConstructor(final Class<T> proxySubclass,
final Object mixedInIfAny) {
+ final Constructor<?>[] constructors = proxySubclass.getConstructors();
+ for (Constructor<?> constructor : constructors) {
+ final Class<?>[] parameterTypes = constructor.getParameterTypes();
+ if(parameterTypes.length == 1 &&
parameterTypes[0].isAssignableFrom(mixedInIfAny.getClass())) {
+ return constructor;
+ }
+ }
+ throw new IllegalArgumentException( String.format(
+ "Could not locate 1-arg constructor for mixin type of '%s'
accepting an instance of '%s'",
+ proxySubclass, mixedInIfAny.getClass().getName()));
+ }
+
+
+}
diff --git
a/core/applib/src/main/java/org/apache/isis/applib/internal/proxy/_Proxies.java
b/core/applib/src/main/java/org/apache/isis/applib/internal/proxy/_Proxies.java
new file mode 100644
index 0000000..d2dd1df
--- /dev/null
+++
b/core/applib/src/main/java/org/apache/isis/applib/internal/proxy/_Proxies.java
@@ -0,0 +1,47 @@
+/*
+ * 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.isis.applib.internal.proxy;
+
+import java.lang.reflect.InvocationHandler;
+
+/**
+ * <h1>- internal use only -</h1>
+ * <p>
+ * Provides framework internal proxy support.
+ * </p>
+ * <p>
+ * <b>WARNING</b>: Do <b>NOT</b> use any of the classes provided by this
package! <br/>
+ * These may be changed or removed without notice!
+ * </p>
+ *
+ * @since 2.0.0
+ */
+public class _Proxies {
+
+ public static interface ProxyFactory<T> {
+
+ public T createInstance(InvocationHandler handler);
+ }
+
+ public static <T> ProxyFactory<T> factory(Class<T> extending, Class<?>
... implementing) {
+ return new ProxyFactory_Default<T>(extending, implementing);
+ }
+
+}
diff --git
a/core/applib/src/main/java/org/apache/isis/applib/internal/proxy/package-info.java
b/core/applib/src/main/java/org/apache/isis/applib/internal/proxy/package-info.java
new file mode 100644
index 0000000..cf818dc
--- /dev/null
+++
b/core/applib/src/main/java/org/apache/isis/applib/internal/proxy/package-info.java
@@ -0,0 +1,28 @@
+/*
+ * 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.
+ */
+/**
+ * <h1>Internal API</h1>
+ * Internal classes, contributing to the internal proprietary API.
+ * These may be changed or removed without notice!
+ * <p>
+ * <b>WARNING</b>:
+ * Do NOT use any of the classes provided by this package!
+ * </p>
+ */
+package org.apache.isis.applib.internal.proxy;
\ No newline at end of file
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