Java tutorial
package com.devicehive.dao.rdbms; /* * #%L * DeviceHive Dao RDBMS Implementation * %% * Copyright (C) 2016 DataArt * %% * 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. * #L% */ import com.devicehive.dao.IdentityProviderDao; import com.devicehive.model.IdentityProvider; import com.devicehive.vo.IdentityProviderVO; import org.springframework.stereotype.Repository; import javax.validation.constraints.NotNull; import java.util.Optional; @Repository public class IdentityProviderDaoRdbmsImpl extends RdbmsGenericDao implements IdentityProviderDao { @Override public IdentityProviderVO getByName(@NotNull String name) { IdentityProvider identityProvider = createNamedQuery(IdentityProvider.class, "IdentityProvider.getByName", Optional.of(CacheConfig.refresh())).setParameter("name", name).getResultList().stream().findFirst() .orElse(null); return IdentityProvider.convertToVO(identityProvider); } @Override public boolean deleteById(@NotNull String id) { return createNamedQuery("IdentityProvider.deleteByName", Optional.of(CacheConfig.bypass())) .setParameter("name", id).executeUpdate() > 0; } @Override public IdentityProviderVO merge(IdentityProviderVO existing) { IdentityProvider identityProvider = IdentityProvider.convertToEntity(existing); IdentityProvider merge = super.merge(identityProvider); return IdentityProvider.convertToVO(merge); } @Override public void persist(IdentityProviderVO identityProvider) { IdentityProvider newEntity = IdentityProvider.convertToEntity(identityProvider); super.persist(newEntity); } }