Java tutorial
/* * Copyright 2016 Christoph Brill <egore911@gmail.com> * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package de.egore911.hexanalyzer.persistence.selector; import java.util.List; import javax.annotation.Nonnull; import javax.persistence.criteria.CriteriaBuilder; import javax.persistence.criteria.CriteriaQuery; import javax.persistence.criteria.Predicate; import javax.persistence.criteria.Root; import org.apache.commons.lang3.StringUtils; import de.egore911.appframework.persistence.selector.AbstractResourceSelector; import de.egore911.hexanalyzer.persistence.model.PluginEntity; import de.egore911.hexanalyzer.persistence.model.PluginEntity_; import de.egore911.hexanalyzer.ui.dto.Plugin.ExtensionPoint; public class PluginSelector extends AbstractResourceSelector<PluginEntity> { private static final long serialVersionUID = -4769568193014458829L; private ExtensionPoint extensionPoint; private String search; @Nonnull @Override protected Class<PluginEntity> getEntityClass() { return PluginEntity.class; } @Nonnull @Override protected List<Predicate> generatePredicateList(@Nonnull CriteriaBuilder builder, @Nonnull Root<PluginEntity> from, @Nonnull CriteriaQuery<?> criteriaQuery) { List<Predicate> predicates = super.generatePredicateList(builder, from, criteriaQuery); if (extensionPoint != null) { builder.equal(from.get(PluginEntity_.extensionPoint), extensionPoint); } if (StringUtils.isNotEmpty(search)) { String likePattern = '%' + search + '%'; predicates.add(builder.or(builder.like(from.get(PluginEntity_.qualifiedName), likePattern), builder.like(from.get(PluginEntity_.source), likePattern))); } return predicates; } public PluginSelector withExtensionPoint(ExtensionPoint extensionPoint) { this.extensionPoint = extensionPoint; return this; } @Override public PluginSelector withSearch(String search) { this.search = search; return this; } }