| /* |
| * 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 org.apache.tajo.engine.function.geoip; |
| |
| import org.apache.tajo.catalog.Column; |
| import org.apache.tajo.common.TajoDataTypes.Type; |
| import org.apache.tajo.datum.Datum; |
| import org.apache.tajo.datum.NullDatum; |
| import org.apache.tajo.datum.TextDatum; |
| import org.apache.tajo.engine.function.annotation.Description; |
| import org.apache.tajo.engine.function.annotation.ParamTypes; |
| import org.apache.tajo.plan.function.GeneralFunction; |
| import org.apache.tajo.storage.Tuple; |
| import org.apache.tajo.util.GeoIPUtil; |
| |
| @Description( |
| functionName = "geoip_country_code", |
| description = "Convert an ip address to a geoip country code.", |
| example = "> SELECT geoip_country_code(134744072);\n" |
| + "US", |
| returnType = Type.TEXT, |
| paramTypes = {@ParamTypes(paramTypes = {Type.BINARY}), |
| @ParamTypes(paramTypes = {Type.BLOB})} |
| ) |
| |
| public class GeoIPCountryBlob extends GeneralFunction { |
| public GeoIPCountryBlob() { |
| super(new Column[] {new Column("ip_address", Type.BLOB)}); |
| } |
| |
| @Override |
| public Datum eval(Tuple params) { |
| if (params.isBlankOrNull(0)) { |
| return NullDatum.get(); |
| } |
| |
| return new TextDatum(GeoIPUtil.getCountryCode(params.getBytes(0))); |
| } |
| } |