Java tutorial
/** * Copyright 2013-2018 the original author or authors from the Jeddict project (https://jeddict.github.io/). * * 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 io.github.jeddict.jpa.spec.validator.table; import org.apache.commons.lang.StringUtils; import io.github.jeddict.jpa.spec.CollectionTable; import io.github.jeddict.jpa.spec.validator.MarshalValidator; import io.github.jeddict.jpa.spec.validator.column.JoinColumnValidator; public class CollectionTableValidator extends MarshalValidator<CollectionTable> { @Override public CollectionTable marshal(CollectionTable table) throws Exception { if (table != null && isEmpty(table)) { return null; } return table; } public static boolean isEmpty(CollectionTable table) { JoinColumnValidator.filter(table.getJoinColumn()); return StringUtils.isBlank(table.getName()) && StringUtils.isBlank(table.getSchema()) && StringUtils.isBlank(table.getCatalog()) && table.getJoinColumn().isEmpty() && table.getIndex().isEmpty(); } }