/* This file is part of VoltDB.
 * Copyright (C) 2008-2015 VoltDB Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with VoltDB.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.hsqldb_voltpatches.types;

import org.hsqldb_voltpatches.Error;
import org.hsqldb_voltpatches.ErrorCode;
import org.hsqldb_voltpatches.SessionInterface;
import org.hsqldb_voltpatches.Types;

public class VoltGeographyType extends Type {

    VoltGeographyType(long precision) {
        super(Types.VOLT_GEOGRAPHY,    // comparison group
                Types.VOLT_GEOGRAPHY,  // type id
                precision,             // precision (i.e., length)
                0);                    // scale
    }

    VoltGeographyType() {
        super(Types.VOLT_GEOGRAPHY,    // comparison group
                Types.VOLT_GEOGRAPHY,  // type id
                0,                     // precision (use default length)
                0);                    // scale
    }

    @Override
    public int displaySize() {
        return -1;
    }

    @Override
    public String getNameString() {
        return "GEOGRAPHY";
    }

    @Override
    String getDefinition() {
        return getNameString();
    }

    @Override
    public boolean isGeographyType() {
        return true;
    }

    @Override
    public int compare(Object a, Object b) {
        // Incompatible type in operation
        throw Error.error(ErrorCode.X_42565);
    }

    @Override
    public Object convertToType(SessionInterface session, Object a, Type type) {
        // We come here when parsing default values.
        if (type instanceof VoltGeographyType) {
            // This is currently unreachable, since there's no way to
            // create a GEOGRAPHY object in a DEFAULT clause given allowable syntax.
            assert(false);
        }

        // incompatible types
        throw Error.error(ErrorCode.X_42561);
    }

    @Override
    public Object convertToDefaultType(SessionInterface sessionInterface,
            Object o) {
        // incompatible types
        throw Error.error(ErrorCode.X_42561);
    }

    @Override
    public String convertToString(Object a) {
        return getNameString();
    }

    @Override
    public String convertToSQLString(Object a) {
        return getNameString();
    }

    @Override
    public boolean canConvertFrom(Type otherType) {
        return otherType instanceof VoltGeographyType;
    }

    @Override
    public Type getAggregateType(Type otherType) {
        if (otherType instanceof VoltGeographyType) {
            return this;
        }
        // incompatible types in combination
        throw Error.error(ErrorCode.X_42562);
    }

    @Override
    public Type getCombinedType(Type other, int operation) {
        // The 'combined type' seems to refer to combining types with
        // operators other than comparisons.   Comparisons always
        // return BOOLEAN, and are valid for values of type GEOGRAPHY.
        //
        // We don't allow any non-comparison operators on GEOGRAPHY values,
        //so just throw here if anyone tries.
        //
        // incompatible types in combination
        throw Error.error(ErrorCode.X_42562);
    }

    // *********
    // Below are methods that are stubs that have not been filled in:
    //   - JDBC attributes (TODO)
    //   - Methods that define runtime behavior in HSQL

    @Override
    public int getJDBCTypeCode() {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public String getJDBCClassName() {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public Object convertToTypeLimits(SessionInterface session, Object a) {
        // TODO Auto-generated method stub
        return null;
    }
}