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• JpaRevisionService.java

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io.coodoo.framework.jpa.control.JpaRevisionService Maven / Gradle / Ivy

package io.coodoo.framework.jpa.control;

import java.time.LocalDateTime;
import java.time.ZoneId;

import javax.ejb.Stateless;
import javax.enterprise.inject.Instance;
import javax.inject.Inject;

import io.coodoo.framework.jpa.boundary.RevisionUser;
import io.coodoo.framework.jpa.boundary.entity.AbstractRevisionDatesEntity;
import io.coodoo.framework.jpa.boundary.entity.AbstractRevisionDeleteMarkerEntity;
import io.coodoo.framework.jpa.boundary.entity.AbstractRevisionEntity;

/**
 * Fills the entites revision attributes
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Entity
Creation Date
Creation User
Update Date
Update User
Delete Date
Delete User
AbstractRevisionDatesEntity
X
X
AbstractRevisionDatesDeleteMarkerEntity
X
X
X
AbstractRevisionEntity
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X
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X
AbstractRevisionDeleteMarkerEntity
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X
 * 
 * 
 * @author coodoo GmbH (coodoo.io)
 */
@Stateless
public class JpaRevisionService {

    @Inject
    Instance revisionUserInstance;

    public void markCreation(AbstractRevisionDatesEntity entity) {

        entity.setCreatedAt(now());

        if (entity instanceof AbstractRevisionEntity) {
            RevisionUser revisionUser = revisionUserInstance.get();
            ((AbstractRevisionEntity) entity).setCreatedBy(revisionUser.getUserId());
        }
    }

    public void markUpdate(AbstractRevisionDatesEntity entity) {

        if (entity instanceof AbstractRevisionDeleteMarkerEntity
                        // triggered by a set deletion marker field
                        && (((AbstractRevisionDeleteMarkerEntity) entity).getDeletedAt() != null
                                        || ((AbstractRevisionDeleteMarkerEntity) entity).getDeletedBy() != null)) {

            RevisionUser revisionUser = revisionUserInstance.get();
            ((AbstractRevisionDeleteMarkerEntity) entity).setDeletedAt(now());
            ((AbstractRevisionDeleteMarkerEntity) entity).setDeletedBy(revisionUser.getUserId());
        }

        entity.setUpdatedAt(now());

        if (entity instanceof AbstractRevisionEntity) {
            RevisionUser revisionUser = revisionUserInstance.get();
            ((AbstractRevisionEntity) entity).setUpdatedBy(revisionUser.getUserId());
        }
    }

    private LocalDateTime now() {
        return LocalDateTime.now(ZoneId.of("UTC"));
    }

}