Example usage for org.springframework.data.mapping PersistentProperty isCollectionLike

Introduction

In this page you can find the example usage for org.springframework.data.mapping PersistentProperty isCollectionLike.

Prototype

boolean isCollectionLike();

Source Link

Document

Returns whether the property is a Collection , Iterable or an array.

Usage

From source file:org.lightadmin.core.persistence.metamodel.PersistentPropertyType.java

public static PersistentPropertyType forPersistentProperty(PersistentProperty persistentProperty) {
    final Class<?> attrType = persistentProperty.getType();

    if (persistentProperty.isAnnotationPresent(Embedded.class)
            || persistentProperty.isAnnotationPresent(EmbeddedId.class)) {
        return PersistentPropertyType.EMBEDDED;
    }//  w  w w.  jav a 2 s  .c  om

    if (persistentProperty.isAssociation()) {
        if (persistentProperty.isCollectionLike()) {
            return PersistentPropertyType.ASSOC_MULTI;
        }
        return PersistentPropertyType.ASSOC;
    }

    if (persistentProperty.isMap()) {
        return PersistentPropertyType.MAP;
    }

    if (ClassUtils.isAssignable(Enum.class, attrType)) {
        return ENUM;
    }

    if (forType(attrType) == STRING && persistentProperty.isAnnotationPresent(FileReference.class)) {
        return PersistentPropertyType.FILE;
    }

    if (isOfDateType(persistentProperty)) {
        return DATE;
    }

    if (isOfTimeType(persistentProperty)) {
        return TIME;
    }

    if (isOfDateTimeType(persistentProperty)) {
        return DATE_TIME;
    }

    return forType(attrType);
}

---

From source file:org.lightadmin.core.web.support.DynamicPersistentEntityResourceProcessor.java

private Object associationPropertyValue(Association association, Object instance) {
    PersistentProperty persistentProperty = association.getInverse();
    PersistentEntity persistentEntity = persistentProperty.getOwner();

    if (persistentProperty.isMap()) {
        return null;
    }//from   w ww.ja  va  2 s  .co m

    if (persistentProperty.isCollectionLike()) {
        return associatedPersistentEntities(association, instance);
    }

    Object associationValue = beanWrapper(instance).getPropertyValue(persistentProperty.getName());

    return associatedPersistentEntity(persistentProperty, associationValue);
}

---

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.
 *///w  ww  .j  av  a 2s.  c  om
@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);
            }
        }
    });
}

---