EntityStore.java 文件源码

public EntityStore(EntityDefinition<E> entityDefinition, Map<RelationDefinition, RelationStore> relationStores) {
    m_entityDefinition = entityDefinition;
    m_entityClass = entityDefinition.getEntityClass();
    m_entityName = entityDefinition.getEntityName();

    IdDefinition idDefinition = entityDefinition.getIdDefinition();
    m_idPropertyName = idDefinition != null ? idDefinition.getIdName() : null;

    m_attributes = ImmutableSet
            .copyOf(entityDefinition.getAttributes().values().stream().map(AttributeDefinition::getAttributeName).collect(Collectors.toList()));

    ImmutableMap.Builder<String, Map<Object, Long>> uniquesIndex = ImmutableMap.builder();
    entityDefinition.getUniqueConstraints().forEach(uniqueAttribute -> uniquesIndex.put(uniqueAttribute, new HashMap<>()));
    m_uniquesIndex = uniquesIndex.build();

    ImmutableSet.Builder<String> nonNullAttributes = ImmutableSet.builder();
    entityDefinition.getAttributes().values().stream() //
            .filter(attributeDefinition -> !attributeDefinition.isNullable()) //
            .forEach(attributeDefinition -> nonNullAttributes.add(attributeDefinition.getAttributeName()));
    m_nonNullAttributes = nonNullAttributes.build();

    ImmutableMap.Builder<String, RelationStore> relationStoresBuilder = ImmutableMap.builder();
    entityDefinition.getRelations().values().forEach(relationDefinition -> {
        RelationStore relationStore = relationStores.get(relationDefinition);
        relationStoresBuilder.put(relationDefinition.getRelationName(), relationStore);
    });
    m_relationStores = relationStoresBuilder.build();
}