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Core data-binding logic used by YOJ (YDB ORM for Java) to convert between Java objects and database rows (or anything representable by a Java Map, really).

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package tech.ydb.yoj.databind.expression.values;

import tech.ydb.yoj.databind.FieldValueType;
import tech.ydb.yoj.databind.expression.IllegalExpressionException.FieldTypeError.BooleanFieldExpected;

import java.lang.reflect.Type;
import java.util.Optional;

import static java.lang.String.format;
import static tech.ydb.yoj.databind.expression.values.FieldValue.ValidationResult.invalidFieldValue;
import static tech.ydb.yoj.databind.expression.values.FieldValue.ValidationResult.validFieldValue;

public record BooleanFieldValue(boolean bool) implements FieldValue {
    @Override
    public Optional> getComparableByType(Type fieldType, FieldValueType valueType) {
        if (valueType != FieldValueType.BOOLEAN) {
            return Optional.empty();
        }

        return Optional.of(bool);
    }

    @Override
    public ValidationResult isValidValueOfType(Type fieldType, FieldValueType valueType) {
        return valueType == FieldValueType.BOOLEAN
                ? validFieldValue()
                : invalidFieldValue(BooleanFieldExpected::new, p -> format("Specified a boolean value for non-boolean field \"%s\"", p));
    }

    @Override
    public String toString() {
        return Boolean.toString(bool);
    }
}