Examples with EntityMetamodel com.blazebit.persistence.parser.EntityMetamodel used on opensource projects

Example 16 with EntityMetamodel

use of com.blazebit.persistence.parser.EntityMetamodel in project blaze-persistence by Blazebit.

the class FullEntityLoader method createQueryString.

private String createQueryString(EntityViewManagerImpl evm, ManagedViewType<?> subviewType, boolean multiple) {
    EntityMetamodel entityMetamodel = evm.getMetamodel().getEntityMetamodel();
    EntityType<?> entityType = entityMetamodel.getEntity(entityClass);
    // We can't query embeddables
    if (entityType == null) {
        return null;
    }
    Set<String> fetchJoinableRelations = new HashSet<>(subviewType.getAttributes().size());
    addFetchJoinableRelations(fetchJoinableRelations, "", subviewType);
    CriteriaBuilderFactory cbf = evm.getCriteriaBuilderFactory();
    if (fetchJoinableRelations.isEmpty()) {
        return null;
    } else {
        CriteriaBuilder<?> criteriaBuilder = cbf.create(null, entityClass).fetch(fetchJoinableRelations.toArray(new String[fetchJoinableRelations.size()]));
        if (multiple) {
            criteriaBuilder.where(JpaMetamodelUtils.getSingleIdAttribute(entityType).getName()).inExpressions(":entityIds");
        } else {
            criteriaBuilder.where(JpaMetamodelUtils.getSingleIdAttribute(entityType).getName()).eqExpression(":id");
        }
        return criteriaBuilder.getQueryString();
    }
}