Java tutorial
/* * Copyright 2016 William Oemler, Blueprint Medicines * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.oncoblocks.centromere.jpa.test; import org.springframework.beans.factory.annotation.Autowired; import javax.persistence.EntityManager; import javax.persistence.criteria.CriteriaBuilder; import javax.persistence.criteria.CriteriaQuery; import javax.persistence.criteria.Path; import javax.persistence.criteria.Root; import java.util.List; /** * @author woemler */ public class EntrezGeneRepositoryImpl implements CustomGeneRepository { private final EntityManager entityManager; @Autowired public EntrezGeneRepositoryImpl(EntityManager entityManager) { this.entityManager = entityManager; } public List<EntrezGene> guessGene(String keyword) { CriteriaBuilder builder = entityManager.getCriteriaBuilder(); CriteriaQuery<EntrezGene> query = builder.createQuery(EntrezGene.class); Root<EntrezGene> root = query.from(EntrezGene.class); query.where(builder.equal(root.get("primaryGeneSymbol"), keyword)); List<EntrezGene> genes = entityManager.createQuery(query).getResultList(); if (genes != null && genes.size() > 0) return genes; query = builder.createQuery(EntrezGene.class); root = query.from(EntrezGene.class); Path join = root.join("aliases"); query.where(builder.equal(join.get("name"), keyword)); return entityManager.createQuery(query).getResultList(); } }