Example usage for org.springframework.data.mapping PersistentEntity isIdProperty

Introduction

In this page you can find the example usage for org.springframework.data.mapping PersistentEntity isIdProperty.

Prototype

boolean isIdProperty(PersistentProperty<?> property);

Source Link

Document

Returns whether the given PersistentProperty is the id property of the entity.

Usage

From source file:org.lightadmin.core.persistence.support.DynamicDomainObjectMerger.java

/**
 * Merges the given target object into the source one.
 *
 * @param from       can be {@literal null}.
 * @param target     can be {@literal null}.
 * @param nullPolicy how to handle {@literal null} values in the source object.
 *//*from   w  w  w. j  a va 2s. co m*/
@Override
public void merge(final Object from, final Object target, final NullHandlingPolicy nullPolicy) {
    if (from == null || target == null) {
        return;
    }

    final BeanWrapper fromWrapper = beanWrapper(from);
    final BeanWrapper targetWrapper = beanWrapper(target);

    final DomainTypeAdministrationConfiguration domainTypeAdministrationConfiguration = configuration
            .forManagedDomainType(target.getClass());
    final PersistentEntity<?, ?> entity = domainTypeAdministrationConfiguration.getPersistentEntity();

    entity.doWithProperties(new SimplePropertyHandler() {
        @Override
        public void doWithPersistentProperty(PersistentProperty<?> persistentProperty) {
            Object sourceValue = fromWrapper.getPropertyValue(persistentProperty.getName());
            Object targetValue = targetWrapper.getPropertyValue(persistentProperty.getName());

            if (entity.isIdProperty(persistentProperty)) {
                return;
            }

            if (nullSafeEquals(sourceValue, targetValue)) {
                return;
            }

            if (propertyIsHiddenInFormView(persistentProperty, domainTypeAdministrationConfiguration)) {
                return;
            }

            if (nullPolicy == APPLY_NULLS || sourceValue != null) {
                targetWrapper.setPropertyValue(persistentProperty.getName(), sourceValue);
            }
        }
    });

    entity.doWithAssociations(new SimpleAssociationHandler() {
        @Override
        @SuppressWarnings("unchecked")
        public void doWithAssociation(Association<? extends PersistentProperty<?>> association) {
            PersistentProperty<?> persistentProperty = association.getInverse();

            Object fromValue = fromWrapper.getPropertyValue(persistentProperty.getName());
            Object targetValue = targetWrapper.getPropertyValue(persistentProperty.getName());

            if (propertyIsHiddenInFormView(persistentProperty, domainTypeAdministrationConfiguration)) {
                return;
            }

            if ((fromValue == null && nullPolicy == APPLY_NULLS)) {
                targetWrapper.setPropertyValue(persistentProperty.getName(), fromValue);
            }

            if (persistentProperty.isCollectionLike()) {
                Collection<Object> sourceCollection = (Collection) fromValue;
                Collection<Object> targetCollection = (Collection) targetValue;

                Collection<Object> candidatesForAddition = candidatesForAddition(sourceCollection,
                        targetCollection, persistentProperty);
                Collection<Object> candidatesForRemoval = candidatesForRemoval(sourceCollection,
                        targetCollection, persistentProperty);

                removeReferencedItems(targetCollection, candidatesForRemoval);

                addReferencedItems(targetCollection, candidatesForAddition);

                return;
            }

            if (!nullSafeEquals(fromValue, targetWrapper.getPropertyValue(persistentProperty.getName()))) {
                targetWrapper.setPropertyValue(persistentProperty.getName(), fromValue);
            }
        }
    });
}

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