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Cassandra support for Spring Data
/*
* Copyright 2019-2024 the original author or authors.
*
* 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
*
* https://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.springframework.data.cassandra.config;
import static org.springframework.data.config.ParsingUtils.*;
import org.springframework.beans.factory.support.AbstractBeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
import org.springframework.beans.factory.xml.BeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.data.auditing.config.IsNewAwareAuditingHandlerBeanDefinitionParser;
import org.springframework.data.cassandra.core.mapping.CassandraMappingContext;
import org.springframework.data.cassandra.core.mapping.event.AuditingEntityCallback;
import org.springframework.data.cassandra.core.mapping.event.ReactiveAuditingEntityCallback;
import org.springframework.lang.Nullable;
import org.springframework.util.ClassUtils;
import org.springframework.util.StringUtils;
import org.w3c.dom.Element;
/**
* {@link BeanDefinitionParser} to register a {@link AuditingEntityCallback} to transparently set auditing information
* on an entity. Registers {@link ReactiveAuditingEntityCallback} if Project Reactor is on the class path.
*
* @author Mark Paluch
* @since 2.2
*/
public class CassandraAuditingBeanDefinitionParser extends AbstractSingleBeanDefinitionParser {
private static boolean PROJECT_REACTOR_AVAILABLE = ClassUtils.isPresent("reactor.core.publisher.Mono",
CassandraAuditingRegistrar.class.getClassLoader());
@Override
protected Class getBeanClass(Element element) {
return AuditingEntityCallback.class;
}
@Override
protected boolean shouldGenerateId() {
return true;
}
@Override
protected void doParse(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) {
String mappingContextRef = element.getAttribute("mapping-context-ref");
if (!StringUtils.hasText(mappingContextRef)) {
BeanDefinitionRegistry registry = parserContext.getRegistry();
if (!registry.containsBeanDefinition(DefaultBeanNames.CONTEXT)) {
registry.registerBeanDefinition(DefaultBeanNames.CONTEXT,
new RootBeanDefinition(CassandraMappingContext.class));
}
mappingContextRef = DefaultBeanNames.CONTEXT;
}
IsNewAwareAuditingHandlerBeanDefinitionParser parser = new IsNewAwareAuditingHandlerBeanDefinitionParser(
mappingContextRef);
parser.parse(element, parserContext);
AbstractBeanDefinition isNewAwareAuditingHandler = getObjectFactoryBeanDefinition(parser.getResolvedBeanName(),
parserContext.extractSource(element));
builder.addConstructorArgValue(isNewAwareAuditingHandler);
if (PROJECT_REACTOR_AVAILABLE) {
registerReactiveAuditingEntityCallback(parserContext.getRegistry(), isNewAwareAuditingHandler,
parserContext.extractSource(element));
}
}
private void registerReactiveAuditingEntityCallback(BeanDefinitionRegistry registry,
AbstractBeanDefinition isNewAwareAuditingHandler, @Nullable Object source) {
BeanDefinitionBuilder builder = BeanDefinitionBuilder.rootBeanDefinition(ReactiveAuditingEntityCallback.class);
builder.addConstructorArgValue(isNewAwareAuditingHandler);
builder.getRawBeanDefinition().setSource(source);
registry.registerBeanDefinition(ReactiveAuditingEntityCallback.class.getName(), builder.getBeanDefinition());
}
}