Java tutorial
/** * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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 com.gst.mix.domain; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.Table; import org.apache.commons.lang.StringUtils; import com.gst.infrastructure.core.api.JsonCommand; import com.gst.infrastructure.core.domain.AbstractPersistableCustom; @Entity @Table(name = "mix_taxonomy_mapping") public class MixTaxonomyMapping extends AbstractPersistableCustom<Long> { @Column(name = "identifier") private String identifier; @Column(name = "config") private String config; @Column(name = "currency") private String currency; protected MixTaxonomyMapping() { // default } private MixTaxonomyMapping(final String identifier, final String config, final String currency) { this.identifier = StringUtils.defaultIfEmpty(identifier, null); this.config = StringUtils.defaultIfEmpty(config, null); this.currency = StringUtils.defaultIfEmpty(currency, null); } public static MixTaxonomyMapping fromJson(final JsonCommand command) { final String identifier = command.stringValueOfParameterNamed("identifier"); final String config = command.stringValueOfParameterNamed("config"); final String currency = command.stringValueOfParameterNamed("currency"); return new MixTaxonomyMapping(identifier, config, currency); } public void update(final JsonCommand command) { this.identifier = command.stringValueOfParameterNamed("identifier"); this.config = command.stringValueOfParameterNamed("config"); this.currency = command.stringValueOfParameterNamed("currency"); } }