hazelcast-master/hazelcast-sql/src/main/java/com/hazelcast/sql/impl/type/converter/BigIntegerConverter.java
/*
 * Copyright 2023 Hazelcast Inc.
 *
 * Licensed under the Hazelcast Community License (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://hazelcast.com/hazelcast-community-license
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.hazelcast.sql.impl.type.converter;

import com.hazelcast.internal.serialization.SerializableByConvention;
import com.hazelcast.sql.impl.type.QueryDataTypeFamily;

import java.math.BigDecimal;
import java.math.BigInteger;

import static com.hazelcast.sql.impl.type.QueryDataTypeUtils.DECIMAL_MATH_CONTEXT;

/**
 * Converter for {@link java.math.BigInteger} type.
 */
@SerializableByConvention
public final class BigIntegerConverter extends AbstractDecimalConverter {

    public static final BigIntegerConverter INSTANCE = new BigIntegerConverter();

    private BigIntegerConverter() {
        super(ID_BIG_INTEGER);
    }

    @Override
    public Class<?> getValueClass() {
        return BigInteger.class;
    }

    @Override
    public byte asTinyint(Object val) {
        BigInteger casted = cast(val);
        try {
            return casted.byteValueExact();
        } catch (ArithmeticException e) {
            throw numericOverflowError(QueryDataTypeFamily.TINYINT);
        }
    }

    @Override
    public short asSmallint(Object val) {
        BigInteger casted = cast(val);
        try {
            return casted.shortValueExact();
        } catch (ArithmeticException e) {
            throw numericOverflowError(QueryDataTypeFamily.SMALLINT);
        }
    }

    @Override
    public int asInt(Object val) {
        BigInteger casted = cast(val);
        try {
            return casted.intValueExact();
        } catch (ArithmeticException e) {
            throw numericOverflowError(QueryDataTypeFamily.INTEGER);
        }
    }

    @Override
    public long asBigint(Object val) {
        BigInteger casted = cast(val);
        try {
            return casted.longValueExact();
        } catch (ArithmeticException e) {
            throw numericOverflowError(QueryDataTypeFamily.BIGINT);
        }
    }

    @Override
    public BigDecimal asDecimal(Object val) {
        return new BigDecimal(cast(val), DECIMAL_MATH_CONTEXT);
    }

    @Override
    public float asReal(Object val) {
        return cast(val).floatValue();
    }

    @Override
    public double asDouble(Object val) {
        return cast(val).doubleValue();
    }

    @Override
    public String asVarchar(Object val) {
        return cast(val).toString();
    }

    private BigInteger cast(Object val) {
        return (BigInteger) val;
    }

}
