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/*
* ============LICENSE_START=======================================================
* ONAP : ccsdk features
* ================================================================================
* Copyright (C) 2019 highstreet technologies GmbH Intellectual Property.
* All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*
*/
package org.onap.ccsdk.features.sdnr.wt.dataprovider.yangtools;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import javax.annotation.Nullable;
import org.opendaylight.yangtools.concepts.Builder;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class YangToolsCloner {
private static YangToolsMapper yangtoolsMapper = new YangToolsMapper();
private static final Logger LOG = LoggerFactory.getLogger(YangToolsCloner.class);
public static final int ACCESSOR_FIELD = 0;
public static final int ACCESSOR_METHOD = 1;
private final int accessor;
private YangToolsCloner(int ac) {
this.accessor = ac;
}
public static YangToolsCloner instance() {
return instance(ACCESSOR_METHOD);
}
public static YangToolsCloner instance(int ac) {
return new YangToolsCloner(ac);
}
/**
*
* @param source source object
* @param clazz Class of return object
* @return list of cloned object
* @return
*/
public <S extends DataObject, T extends DataObject> List<T> cloneList(List<S> source, Class<T> clazz) {
return cloneList(source, clazz, null);
}
/**
*
* @param source source object
* @param clazz Class of return object
* @attrList filter for attribute Names to clone
* @return list of cloned object
*/
public <S extends DataObject, T extends DataObject> List<T> cloneList(List<S> source, Class<T> clazz,
@Nullable List<String> attrList) {
if (source == null) {
return null;
}
List<T> list = new ArrayList<>();
for (S s : source) {
list.add(clone(s, clazz, attrList));
}
return list;
}
/**
*
* @param source source object
* @param clazz Class of return object
* @return cloned object
*/
public <S, T extends DataObject> T clone(S source, Class<T> clazz) {
return clone(source, clazz, null);
}
/**
*
* @param source source object
* @param clazz Class of return object
* @attrList if empty copy all else list of attribute Names to clone
* @return cloned object
*/
public <S, T extends DataObject> T clone(S source, Class<T> clazz, @Nullable List<String> attrList) {
if (source == null) {
return (T) null;
}
Field[] attributeFields;
Field sourceField;
Method m;
Builder<T> builder = yangtoolsMapper.getBuilder(clazz);
T object = builder.build();
attributeFields = object.getClass().getDeclaredFields();
for (Field attributeField : attributeFields) {
// check if attr is in inclusion list
if (attrList != null && !attrList.contains(attributeField.getName())) {
continue;
}
// ignore QNAME
if (attributeField.getName().equals("QNAME")) {
continue;
}
attributeField.setAccessible(true);
try {
if (accessor == ACCESSOR_FIELD) {
sourceField = source.getClass().getDeclaredField(attributeField.getName());
sourceField.setAccessible(true);
if (attributeField.getType().equals(String.class) && !sourceField.getType().equals(String.class)) {
attributeField.set(object, String.valueOf(sourceField.get(source)));
} else {
attributeField.set(object, sourceField.get(source));
}
} else if (accessor == ACCESSOR_METHOD) {
String getter = getter(attributeField.getName());
System.out.println("getter=" + getter);
m = source.getClass().getDeclaredMethod(getter);
m.setAccessible(true);
if (attributeField.getType().equals(String.class) && !m.getReturnType().equals(String.class)) {
attributeField.set(object, String.valueOf(m.invoke(source)));
} else {
attributeField.set(object, m.invoke(source));
}
}
} catch (NoSuchMethodException | NoSuchFieldException e) {
// Convert to run-time exception
String msg = "no such field " + attributeField.getName() + " in class " + source.getClass().getName();
LOG.debug(msg);
// throw new IllegalArgumentException(msg);
} catch (IllegalAccessException | SecurityException e) {
LOG.debug("Access problem " + attributeField.getName(), e);
} catch (IllegalArgumentException e) {
LOG.debug("argument problem " + attributeField.getName(), e);
} catch (InvocationTargetException e) {
LOG.debug("invocation problem " + attributeField.getName(), e);
}
}
return object;
}
private static String getter(String name) {
return String.format("%s%s%s", "get", name.substring(1, 2).toUpperCase(), name.substring(2));
}
public <S extends DataObject, T extends DataObject, B extends Builder<T>> B cloneToBuilder(S source, B builder) {
return cloneToBuilder(source, builder, null);
}
public <S extends DataObject, T extends DataObject, B extends Builder<T>> B cloneToBuilder(S source, B builder,
@Nullable List<String> attrList) {
Field[] attributeFields;
Field sourceField;
Method m;
attributeFields = builder.getClass().getDeclaredFields();
for (Field attributeField : attributeFields) {
// check if attr is in inclusion list
if (attrList != null && !attrList.contains(attributeField.getName())) {
continue;
}
// ignore QNAME
if (attributeField.getName().equals("QNAME")) {
continue;
}
attributeField.setAccessible(true);
try {
if (accessor == ACCESSOR_FIELD) {
sourceField = source.getClass().getDeclaredField(attributeField.getName());
sourceField.setAccessible(true);
if (attributeField.getType().equals(String.class) && !sourceField.getType().equals(String.class)) {
attributeField.set(builder, String.valueOf(sourceField.get(source)));
} else {
attributeField.set(builder, sourceField.get(source));
}
} else if (accessor == ACCESSOR_METHOD) {
m = source.getClass().getDeclaredMethod(getter(attributeField.getName()));
m.setAccessible(true);
if (attributeField.getType().equals(String.class) && !m.getReturnType().equals(String.class)) {
attributeField.set(builder, String.valueOf(m.invoke(source)));
} else {
attributeField.set(builder, m.invoke(source));
}
}
} catch (NoSuchMethodException | NoSuchFieldException e) {
// Convert to run-time exception
String msg = "no such field " + attributeField.getName() + " in class " + source.getClass().getName();
LOG.debug(msg);
// throw new IllegalArgumentException(msg);
} catch (IllegalAccessException | SecurityException e) {
LOG.debug("Access problem " + attributeField.getName(), e);
} catch (IllegalArgumentException e) {
LOG.debug("argument problem " + attributeField.getName(), e);
} catch (InvocationTargetException e) {
LOG.debug("invocation problem " + attributeField.getName(), e);
}
}
return builder;
}
}
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