com.wavemaker.runtime.data.replacers.EntityValueReplacerBuilder Maven / Gradle / Ivy
/**
* Copyright (C) 2020 WaveMaker, Inc.
*
* 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 com.wavemaker.runtime.data.replacers;
import java.beans.PropertyDescriptor;
import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import org.springframework.beans.BeanUtils;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
/**
* @author Dilip Kumar
* @since 16/6/16
*/
public class EntityValueReplacerBuilder {
public EntityValueReplacer build(Class type) {
MultiValueMap overriderMultiValueMap = new LinkedMultiValueMap<>(
Scope.values().length);
for (final Scope phase : Scope.values()) {
overriderMultiValueMap.put(phase, new ArrayList<>());
}
final Map fieldDescriptorMap = buildDescriptorMap(type);
for (Map.Entry entry : fieldDescriptorMap.entrySet()) {
final Annotation[] annotations = entry.getKey().getAnnotations();
for (final Annotation annotation : annotations) {
if (ValueProviderFactory.contains(annotation.annotationType())) {
final ValueProviderBuilder builder = ValueProviderFactory.getBuilder(annotation.annotationType());
final ValueProvider provider = builder.build(entry.getKey(), fieldDescriptorMap, annotation);
FieldValueReplacer fieldValueReplacer = new FieldValueReplacer(entry.getValue(), provider);
final Set scopes = provider.scopes();
if (scopes.contains(Scope.INSERT)) {
overriderMultiValueMap.add(Scope.INSERT, fieldValueReplacer);
}
if (scopes.contains(Scope.UPDATE)) {
overriderMultiValueMap.add(Scope.UPDATE, fieldValueReplacer);
}
if (scopes.contains(Scope.DELETE)) {
overriderMultiValueMap.add(Scope.DELETE, fieldValueReplacer);
}
if (scopes.contains(Scope.READ)) {
overriderMultiValueMap.add(Scope.READ, fieldValueReplacer);
}
}
}
}
return new EntityValueReplacer(convert(fieldDescriptorMap), overriderMultiValueMap);
}
private Map convert(Map fieldPropertyDescriptorMap) {
Map propertyDescriptorMap = new HashMap<>(fieldPropertyDescriptorMap.size());
for (final Map.Entry entry : fieldPropertyDescriptorMap.entrySet()) {
propertyDescriptorMap.put(entry.getKey().getName(), entry.getValue());
}
return propertyDescriptorMap;
}
private Map buildDescriptorMap(Class type) {
Map propertyDescriptorMap = new HashMap<>();
for (final Field field : type.getDeclaredFields()) {
final PropertyDescriptor descriptor = BeanUtils.getPropertyDescriptor(type, field.getName());
propertyDescriptorMap.put(field, descriptor);
}
return propertyDescriptorMap;
}
}