I have simple example: to find all items that are sold out.
Item has initialQuantity and soldQuantity integer fields. (for some reason I need initialQuantity stored)
I'm trying to do something like:
builder = new BooleanBuilder();
Predicate predicate = builder.and(item.initialQuantity.eq(item.soldQuantity)).getValue();
Iterable<Item> iterable = itemRepository.findAll(predicate);
but it does not return as expected. ".eq()" looks like it expects an integer and not Path<>
First declare it :
JPAQueryFactory query = new JPAQueryFactory(em);
BooleanBuilder booleanBuilder = new BooleanBuilder();
QCreditRequest creditRequest = QCreditRequest.creditRequest;
Then, you can include your business logique, for example :
booleanBuilder.and(creditRequest.creditRequestId.eq(dataRequest.getCreditRequestId()));
if (StringUtils.isNotBlank(dataRequest.getProductId())){
booleanBuilder.and(creditRequest.product.productId.eq(dataRequest.getProductId()));}
finally return the result, mapped to your DTO :
return new HashSet<>(
query
.select(
Projections.constructor(
APResponse.class,
creditRequest.creditRequestId,
creditRequest.creditRequestDate,
creditRequest.product.productId,
creditRequest.creditRequestComment))
.from(creditRequest)
.innerJoin(creditRequest.product, product)
.innerJoin(creditRequest.status, creditRequestStatus)
.where(booleanBuilder)
.fetch());
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