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fix: #534 added support for @CreatedDate in Datastore #4276

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fix: #534 added support for @CreatedDate in Datastore #4276

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28 changes: 24 additions & 4 deletions ...google/cloud/spring/data/datastore/repository/support/DatastoreAuditingEventListener.java
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,7 @@
* 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
* 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,
Expand All @@ -16,9 +16,11 @@

package com.google.cloud.spring.data.datastore.repository.support;

import com.google.cloud.spring.data.datastore.core.mapping.DatastoreMappingContext;
import com.google.cloud.spring.data.datastore.core.mapping.event.BeforeSaveEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.data.auditing.AuditingHandler;
import org.springframework.data.mapping.PersistentEntity;

/**
* Auditing event listener that listens for {@code BeforeSaveEvent}.
Expand All @@ -29,17 +31,35 @@ public class DatastoreAuditingEventListener implements ApplicationListener<Befor

private final AuditingHandler handler;

private final DatastoreMappingContext mappingContext;

/**
* Constructor.
*
* @param datastoreAuditingHandler the auditing handler to set auditing properties.
* @param mappingContext the mapping context to check entity states.
*/
public DatastoreAuditingEventListener(AuditingHandler datastoreAuditingHandler) {
public DatastoreAuditingEventListener(
AuditingHandler datastoreAuditingHandler, DatastoreMappingContext mappingContext) {
this.handler = datastoreAuditingHandler;
this.mappingContext = mappingContext;
}

@Override
public void onApplicationEvent(BeforeSaveEvent event) {
event.getTargetEntities().forEach(this.handler::markModified);
Iterable<?> entities = event.getTargetEntities();

if (entities != null) {
entities.forEach(entity -> {
PersistentEntity<?, ?> persistentEntity =
this.mappingContext.getPersistentEntity(entity.getClass());

if (persistentEntity != null && persistentEntity.isNew(entity)) {
this.handler.markCreated(entity);
} else {
this.handler.markModified(entity);
}
});
}
}
}
}