/**
* 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;
import org.apache.tajo.datum.Datum;
import org.apache.tajo.datum.NullDatum;
import org.apache.tajo.datum.TextDatum;
import org.apache.tajo.engine.function.GeneralFunction;
import org.apache.tajo.engine.function.annotation.Description;
import org.apache.tajo.engine.function.annotation.ParamTypes;
import org.apache.tajo.storage.Tuple;
import org.apache.tajo.util.GeoIPUtil;
import static org.apache.tajo.common.TajoDataTypes.Type.TEXT;
@Description(
functionName = "geoip_country_code",
description = "Convert an ipv4 address string to a geoip country code.",
example = "> SELECT geoip_country_code('8.8.8.8');\n"
+ "US",
returnType = TajoDataTypes.Type.TEXT,
paramTypes = {@ParamTypes(paramTypes = {TajoDataTypes.Type.TEXT})}
)
public class GeoIPCountryText extends GeneralFunction {
public GeoIPCountryText() {
super(new Column[] {new Column("ipv4_address_string", TEXT)});
}
@Override
public Datum eval(Tuple params) {
Datum valueDatum = params.get(0);
if (valueDatum instanceof NullDatum) {
return NullDatum.get();
}
return new TextDatum(GeoIPUtil.getCountryCode(params.get(0).asChars()));
}
}