com.github.rutledgepaulv.rqe.conversions.parsers.StringToObjectBestEffortConverter Maven / Gradle / Ivy

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A library for parsing rsql queries into database queries for a REST API.

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/*
 *  com.github.rutledgepaulv.rqe.conversions.parsers.StringToObjectBestEffortConverter
 *  *
 *  * Copyright (C) 2016 Paul Rutledge 
 *  *
 *  * This software may be modified and distributed under the terms
 *  * of the MIT license.  See the LICENSE file for details.
 *
 */

package com.github.rutledgepaulv.rqe.conversions.parsers;

import org.springframework.core.convert.converter.Converter;

import java.time.Instant;
import java.time.format.DateTimeFormatter;
import java.util.Objects;
import java.util.Optional;

public class StringToObjectBestEffortConverter implements Converter {

    private static final DateTimeFormatter PARSER = DateTimeFormatter.ISO_DATE_TIME;


    @Override
    public Object convert(String source) {
        return tryParseBoolean(source)
                .orElseGet(() -> tryParseDate(source)
                        .orElseGet(() -> tryParseNumber(source)
                                .orElse(source)));
    }


    private static Optional