diff options
author | Maros Marsalek <mmarsale@cisco.com> | 2016-04-12 10:13:14 +0200 |
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committer | Maros Marsalek <mmarsale@cisco.com> | 2016-04-12 10:13:14 +0200 |
commit | 87076811fe04f88fbcf67af8935579a4116a932d (patch) | |
tree | 16ba769c80324076bf60ad8d15ad5fc6323c7472 /v3po/vpp-facade-utils/src/main/java/io/fd/honeycomb/v3po/vpp/facade/impl/write/util/ReflexiveChildWriterCustomizer.java | |
parent | 7acd58dc084ec203fc8f1f4b81ae29c822798e60 (diff) |
HONEYCOMB-9: Split impl module into smaller parts
Change-Id: I9232e0adfe611cb97951080839b28a7b62ba5484
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>
Diffstat (limited to 'v3po/vpp-facade-utils/src/main/java/io/fd/honeycomb/v3po/vpp/facade/impl/write/util/ReflexiveChildWriterCustomizer.java')
-rw-r--r-- | v3po/vpp-facade-utils/src/main/java/io/fd/honeycomb/v3po/vpp/facade/impl/write/util/ReflexiveChildWriterCustomizer.java | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/v3po/vpp-facade-utils/src/main/java/io/fd/honeycomb/v3po/vpp/facade/impl/write/util/ReflexiveChildWriterCustomizer.java b/v3po/vpp-facade-utils/src/main/java/io/fd/honeycomb/v3po/vpp/facade/impl/write/util/ReflexiveChildWriterCustomizer.java new file mode 100644 index 000000000..820f469d6 --- /dev/null +++ b/v3po/vpp-facade-utils/src/main/java/io/fd/honeycomb/v3po/vpp/facade/impl/write/util/ReflexiveChildWriterCustomizer.java @@ -0,0 +1,59 @@ +/* + * 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.v3po.vpp.facade.impl.write.util; + +import com.google.common.base.Optional; +import com.google.common.base.Preconditions; +import com.google.common.collect.Iterables; +import io.fd.honeycomb.v3po.vpp.facade.impl.util.ReflectionUtils; +import io.fd.honeycomb.v3po.vpp.facade.spi.write.ChildVppWriterCustomizer; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; +import java.util.Collections; +import javax.annotation.Nonnull; +import org.opendaylight.yangtools.yang.binding.DataObject; +import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; + +/** + * Might be slow ! + */ +public class ReflexiveChildWriterCustomizer<C extends DataObject> extends NoopWriterCustomizer<C> implements + ChildVppWriterCustomizer<C> { + + @Nonnull + @Override + @SuppressWarnings("unchecked") + public Optional<C> extract(@Nonnull final InstanceIdentifier<C> currentId, @Nonnull final DataObject parentData) { + final Class<C> currentType = currentId.getTargetType(); + final Optional<Method> method = ReflectionUtils.findMethodReflex(getParentType(currentId), + "get" + currentType.getSimpleName(), Collections.<Class<?>>emptyList(), currentType); + + Preconditions.checkArgument(method.isPresent(), "Unable to get %s from %s", currentType, parentData); + + try { + return method.isPresent() + ? Optional.of((C) method.get().invoke(parentData)) + : Optional.<C>absent(); + } catch (IllegalAccessException | InvocationTargetException e) { + throw new IllegalArgumentException("Unable to get " + currentType + " from " + parentData, e); + } + } + + private Class<? extends DataObject> getParentType(final @Nonnull InstanceIdentifier<C> currentId) { + return Iterables.get(currentId.getPathArguments(), Iterables.size(currentId.getPathArguments()) - 2).getType(); + } +} |