package com.megatim.fdxconsultation.core.ifaces.abtracts;
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import com.megatim.fdxcommons.dao.ifaces.utils.SearchCriteriaBuilderUtil;
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import com.megatim.fdxcommons.model.search.SearchCriteria;
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import java.time.LocalDate;
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import java.util.ArrayList;
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import java.util.List;
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import javax.persistence.EntityManager;
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import javax.persistence.criteria.CriteriaBuilder;
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import javax.persistence.criteria.CriteriaQuery;
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import javax.persistence.criteria.Predicate;
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import javax.persistence.criteria.Root;
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/**
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*
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* @author ASUS
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*/
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public interface CommonReadManager<T, U> {
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public Class<T> getManagedEntityClass();
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public EntityManager getEntityManager();
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public default List<T> getAll(U searchEntity) {
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CriteriaBuilder qb = getEntityManager().getCriteriaBuilder();
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CriteriaQuery<T> cq = qb.createQuery(getManagedEntityClass());
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Root<T> root = cq.from(getManagedEntityClass());
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List<SearchCriteria> searchCriterias = SearchCriteriaBuilderUtil.getSearchCriterias(searchEntity, getManagedEntityClass(), root, new ArrayList<>());
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List<Predicate> predicates = new ArrayList<>();
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try {
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predicates = createPedicates(searchCriterias, qb, root);
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} catch (Exception e) {
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e.printStackTrace();
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}
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cq.select(root);
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cq.where(predicates.toArray(new Predicate[predicates.size()]));
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return getEntityManager().createQuery(cq).getResultList();
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}
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/**
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* Méthode qui les prédicats à partir des critères de recherche
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*
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* @param searchCriterias
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* @param cb
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* @param root
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* @return
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*/
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public default List<Predicate> createPedicates(List<SearchCriteria> searchCriterias, CriteriaBuilder cb, Root<T> root) {
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List<Predicate> predicates = new ArrayList<>();
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searchCriterias.parallelStream().forEach(s -> {
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if (s.getFieldValue() != null) {
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Predicate predicate = null;
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switch (s.getOperateur()) {
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case EQUALS:
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predicate = cb.equal(s.getFrom().get(s.getFieldName()), s.getFieldValue());
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predicates.add(predicate);
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break;
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case NOT_EQUALS:
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predicate = cb.notEqual(s.getFrom().get(s.getFieldName()), s.getFieldValue());
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predicates.add(predicate);
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break;
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case LIKE:
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if (s.getFieldValue() instanceof String) {
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predicate = cb.like(s.getFrom().get(s.getFieldName()), "%" + s.getFieldValue().toString() + "%");
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predicates.add(predicate);
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}
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break;
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case GREATER_THAN:
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if (s.getFieldValue() instanceof Number) {
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predicate = cb.gt(s.getFrom().get(s.getFieldName()), (Number) s.getFieldValue());
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predicates.add(predicate);
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} else if (s.getFieldValue() instanceof LocalDate) {
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predicate = cb.greaterThan(s.getFrom().get(s.getFieldName()), (LocalDate) s.getFieldValue());
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predicates.add(predicate);
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}
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break;
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case GREATER_OR_EQUALS_THAN:
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if (s.getFieldValue() instanceof Number) {
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predicate = cb.ge(root.get(s.getFieldName()), (Number) s.getFieldValue());
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predicates.add(predicate);
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} else if (s.getFieldValue() instanceof LocalDate) {
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predicate = cb.greaterThanOrEqualTo(root.get(s.getFieldName()), (LocalDate) s.getFieldValue());
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predicates.add(predicate);
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}
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break;
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case LESS_THAN:
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if (s.getFieldValue() instanceof Number) {
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predicate = cb.lt(s.getFrom().get(s.getFieldName()), (Number) s.getFieldValue());
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predicates.add(predicate);
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} else if (s.getFieldValue() instanceof LocalDate) {
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predicate = cb.lessThan(s.getFrom().get(s.getFieldName()), (LocalDate) s.getFieldValue());
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predicates.add(predicate);
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}
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break;
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case LESS_OR_EQUALS_THAN:
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if (s.getFieldValue() instanceof Number) {
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predicate = cb.le(s.getFrom().get(s.getFieldName()), (Number) s.getFieldValue());
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predicates.add(predicate);
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} else if (s.getFieldValue() instanceof LocalDate) {
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predicate = cb.lessThanOrEqualTo(s.getFrom().get(s.getFieldName()), (LocalDate) s.getFieldValue());
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predicates.add(predicate);
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}
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break;
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case IN:
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if (s.getFieldValue() instanceof java.util.Collection) {
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predicate = s.getFrom().get(s.getFieldName()).in(s.getFieldValue());
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predicates.add(predicate);
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}
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break;
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default:
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}
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}
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});
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return predicates;
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}
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}
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