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-rw-r--r--infra/translate-utils/src/main/java/io/fd/honeycomb/translate/util/read/ReflexiveReaderCustomizer.java103
1 files changed, 103 insertions, 0 deletions
diff --git a/infra/translate-utils/src/main/java/io/fd/honeycomb/translate/util/read/ReflexiveReaderCustomizer.java b/infra/translate-utils/src/main/java/io/fd/honeycomb/translate/util/read/ReflexiveReaderCustomizer.java
new file mode 100644
index 000000000..6ceb7a2b1
--- /dev/null
+++ b/infra/translate-utils/src/main/java/io/fd/honeycomb/translate/util/read/ReflexiveReaderCustomizer.java
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed 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 io.fd.honeycomb.translate.util.read;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+import com.google.common.base.Optional;
+import com.google.common.collect.Lists;
+import io.fd.honeycomb.translate.util.ReflectionUtils;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.Collections;
+import javax.annotation.Nonnull;
+import org.opendaylight.yangtools.concepts.Builder;
+import org.opendaylight.yangtools.yang.binding.Augmentation;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+/**
+ * Might be slow !
+ */
+class ReflexiveReaderCustomizer<C extends DataObject, B extends Builder<C>> extends NoopReaderCustomizer<C, B> {
+
+ private final Class<C> typeClass;
+ private final Class<B> builderClass;
+
+ public ReflexiveReaderCustomizer(final Class<C> typeClass, final Class<B> builderClass) {
+ this.typeClass = typeClass;
+ this.builderClass = builderClass;
+ }
+
+ protected Class<C> getTypeClass() {
+ return typeClass;
+ }
+
+ protected Class<B> getBuilderClass() {
+ return builderClass;
+ }
+
+ @Nonnull
+ @Override
+ public B getBuilder(@Nonnull InstanceIdentifier<C> id) {
+ try {
+ return builderClass.newInstance();
+ } catch (InstantiationException | IllegalAccessException e) {
+ throw new IllegalStateException("Unable to instantiate " + builderClass, e);
+ }
+ }
+
+ @Override
+ public void merge(@Nonnull final Builder<? extends DataObject> parentBuilder, @Nonnull final C readValue) {
+ if (Augmentation.class.isAssignableFrom(typeClass)) {
+ mergeAugmentation(parentBuilder, (Class<? extends Augmentation<?>>) typeClass, readValue);
+ } else {
+ mergeRegular(parentBuilder, readValue);
+ }
+ }
+
+ private static void mergeRegular(@Nonnull final Builder<? extends DataObject> parentBuilder,
+ @Nonnull final DataObject readValue) {
+ final Optional<Method> method =
+ ReflectionUtils.findMethodReflex(parentBuilder.getClass(), "set",
+ Collections.singletonList(readValue.getClass()), parentBuilder.getClass());
+
+ checkArgument(method.isPresent(), "Unable to set %s to %s", readValue, parentBuilder);
+
+ try {
+ method.get().invoke(parentBuilder, readValue);
+ } catch (IllegalAccessException | InvocationTargetException e) {
+ throw new IllegalArgumentException("Unable to set " + readValue + " to " + parentBuilder, e);
+ }
+ }
+
+ private static void mergeAugmentation(@Nonnull final Builder<? extends DataObject> parentBuilder,
+ @Nonnull final Class<? extends Augmentation<?>> typeClass,
+ @Nonnull final DataObject readValue) {
+ final Optional<Method> method =
+ ReflectionUtils.findMethodReflex(parentBuilder.getClass(), "addAugmentation",
+ Lists.newArrayList(Class.class, Augmentation.class), parentBuilder.getClass());
+
+ checkArgument(method.isPresent(), "Not possible to add augmentations to builder: %s", parentBuilder);
+ try {
+ method.get().invoke(parentBuilder, typeClass, readValue);
+ } catch (IllegalAccessException | InvocationTargetException e) {
+ throw new IllegalArgumentException("Unable to set " + readValue + " to " + parentBuilder, e);
+ }
+ }
+
+}