io.questdb.griffin.engine.functions.math.IPv4StrNetmaskFunctionFactory Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of questdb Show documentation
QuestDB is high performance SQL time series database
The newest version!
/*******************************************************************************
 *     ___                  _   ____  ____
 *    / _ \ _   _  ___  ___| |_|  _ \| __ )
 *   | | | | | | |/ _ \/ __| __| | | |  _ \
 *   | |_| | |_| |  __/\__ \ |_| |_| | |_) |
 *    \__\_\\__,_|\___||___/\__|____/|____/
 *
 *  Copyright (c) 2014-2019 Appsicle
 *  Copyright (c) 2019-2024 QuestDB
 *
 *  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.questdb.griffin.engine.functions.math;

import io.questdb.cairo.CairoConfiguration;
import io.questdb.cairo.sql.Function;
import io.questdb.cairo.sql.Record;
import io.questdb.griffin.FunctionFactory;
import io.questdb.griffin.PlanSink;
import io.questdb.griffin.SqlExecutionContext;
import io.questdb.griffin.engine.functions.IPv4Function;
import io.questdb.griffin.engine.functions.UnaryFunction;
import io.questdb.griffin.engine.functions.constants.IPv4Constant;
import io.questdb.std.IntList;
import io.questdb.std.Numbers;
import io.questdb.std.ObjList;

public class IPv4StrNetmaskFunctionFactory implements FunctionFactory {
    @Override
    public String getSignature() {
        return "netmask(S)";
    }

    @Override
    public Function newInstance(
            int position,
            ObjList args,
            IntList argPositions,
            CairoConfiguration configuration,
            SqlExecutionContext sqlExecutionContext
    ) {
        final Function strFunc = args.getQuick(0);
        if (strFunc.isConstant()) {
            final CharSequence str = strFunc.getStrA(null);
            if (str == null) {
                return IPv4Constant.NULL;
            }
            final int val = Numbers.getIPv4Netmask(str);
            return val == Numbers.BAD_NETMASK ? IPv4Constant.NULL : IPv4Constant.newInstance(val);
        }
        return new Func(strFunc);
    }

    private static class Func extends IPv4Function implements UnaryFunction {
        private final Function strFunc;

        public Func(Function strFunc) {
            this.strFunc = strFunc;
        }

        @Override
        public Function getArg() {
            return strFunc;
        }

        @Override
        public int getIPv4(Record rec) {
            final CharSequence str = strFunc.getStrA(rec);
            if (str == null) {
                return Numbers.IPv4_NULL;
            }
            final int val = Numbers.getIPv4Netmask(str);
            return val == Numbers.BAD_NETMASK ? Numbers.IPv4_NULL : val;
        }

        @Override
        public void toPlan(PlanSink sink) {
            sink.val("netmask(").val(strFunc).val(')');
        }
    }
}