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DynamicReports is an open source Java reporting library based on JasperReports. It allows to create dynamic report designs and it doesn't need a visual report designer. You can very quickly create reports and produce documents that can be displayed, printed or exported into many popular formats such as PDF, Excel, Word and others.
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/*
 * DynamicReports - Free Java reporting library for creating reports dynamically
 *
 * Copyright (C) 2010 - 2018 Ricardo Mariaca and the Dynamic Reports Contributors
 *
 * This file is part of DynamicReports.
 *
 * DynamicReports is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * DynamicReports 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with DynamicReports. If not, see .
 */
package net.sf.dynamicreports.report.builder.datatype;

import net.sf.dynamicreports.report.definition.datatype.DRIDataType;
import net.sf.dynamicreports.report.exception.DRException;
import org.apache.commons.lang3.Validate;

import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.Date;
import java.util.List;

/**
 * A set of build in data types
 *
 * @author Ricardo Mariaca
 * 
 */
public class DataTypes {
    private static final BigDecimalType bigDecimalType = new BigDecimalType();
    private static final BigIntegerType bigIntegerType = new BigIntegerType();
    private static final ByteType byteType = new ByteType();
    private static final DoubleType doubleType = new DoubleType();
    private static final FloatType floatType = new FloatType();
    private static final IntegerType integerType = new IntegerType();
    private static final LongType longType = new LongType();
    private static final ShortType shortType = new ShortType();
    private static final DateType dateType = new DateType();
    private static final DateYearToMonthType dateYearToMonthType = new DateYearToMonthType();
    private static final DateYearToHourType dateYearToHourType = new DateYearToHourType();
    private static final DateYearToMinuteType dateYearToMinuteType = new DateYearToMinuteType();
    private static final DateYearToSecondType dateYearToSecondType = new DateYearToSecondType();
    private static final DateYearToFractionType dateYearToFractionType = new DateYearToFractionType();
    private static final DateYearType dateYearType = new DateYearType();
    private static final DateMonthType dateMonthType = new DateMonthType();
    private static final DateDayType dateDayType = new DateDayType();
    private static final TimeHourToMinuteType timeHourToMinuteType = new TimeHourToMinuteType();
    private static final TimeHourToSecondType timeHourToSecondType = new TimeHourToSecondType();
    private static final TimeHourToFractionType timeHourToFractionType = new TimeHourToFractionType();
    private static final PercentageType percentageType = new PercentageType();
    private static final BooleanType booleanType = new BooleanType();
    private static final CharacterType characterType = new CharacterType();
    private static final StringType stringType = new StringType();
    private static final ListType listType = new ListType();

    /**
     * detectType.
     *
     * @param dataType a {@link java.lang.Class} object.
     * @param       a U object.
     * @return a T object.
     * @throws net.sf.dynamicreports.report.exception.DRException if any.
     */
    public static > T detectType(Class dataType) throws DRException {
        return detectType(dataType.getName());
    }

    /**
     * detectType.
     *
     * @param dataType a {@link java.lang.String} object.
     * @return a T object.
     * @throws net.sf.dynamicreports.report.exception.DRException if any.
     */
    @SuppressWarnings("unchecked")
    public static > T detectType(String dataType) throws DRException {
        Validate.notNull(dataType, "dataType must not be null");

        String dataTypeLC = dataType.toLowerCase().trim();
        if (dataTypeLC.equals("bigdecimal") || dataType.equals(BigDecimal.class.getName())) {
            return (T) bigDecimalType;
        }
        if (dataTypeLC.equals("biginteger") || dataType.equals(BigInteger.class.getName())) {
            return (T) bigIntegerType;
        }
        if (dataTypeLC.equals("byte") || dataType.equals(Byte.class.getName())) {
            return (T) byteType;
        }
        if (dataTypeLC.equals("double") || dataType.equals(Double.class.getName())) {
            return (T) doubleType;
        }
        if (dataTypeLC.equals("float") || dataType.equals(Float.class.getName())) {
            return (T) floatType;
        }
        if (dataTypeLC.equals("integer") || dataType.equals(Integer.class.getName())) {
            return (T) integerType;
        }
        if (dataTypeLC.equals("long") || dataType.equals(Long.class.getName())) {
            return (T) longType;
        }
        if (dataTypeLC.equals("short") || dataType.equals(Short.class.getName())) {
            return (T) shortType;
        }
        if (dataTypeLC.equals("date") || dataType.equals(Date.class.getName())) {
            return (T) dateType;
        }
        if (dataTypeLC.equals("dateyeartomonth")) {
            return (T) dateYearToMonthType;
        }
        if (dataTypeLC.equals("dateyeartohour")) {
            return (T) dateYearToHourType;
        }
        if (dataTypeLC.equals("dateyeartominute")) {
            return (T) dateYearToMinuteType;
        }
        if (dataTypeLC.equals("dateyeartosecond")) {
            return (T) dateYearToSecondType;
        }
        if (dataTypeLC.equals("dateyeartofraction")) {
            return (T) dateYearToFractionType;
        }
        if (dataTypeLC.equals("dateyear")) {
            return (T) dateYearType;
        }
        if (dataTypeLC.equals("datemonth")) {
            return (T) dateMonthType;
        }
        if (dataTypeLC.equals("dateday")) {
            return (T) dateDayType;
        }
        if (dataTypeLC.equals("timehourtominute")) {
            return (T) timeHourToMinuteType;
        }
        if (dataTypeLC.equals("timehourtosecond")) {
            return (T) timeHourToSecondType;
        }
        if (dataTypeLC.equals("timehourtofraction")) {
            return (T) timeHourToFractionType;
        }
        if (dataTypeLC.equals("percentage")) {
            return (T) percentageType;
        }
        if (dataTypeLC.equals("boolean") || dataType.equals(Boolean.class.getName())) {
            return (T) booleanType;
        }
        if (dataTypeLC.equals("character") || dataType.equals(Character.class.getName())) {
            return (T) characterType;
        }
        if (dataTypeLC.equals("string") || dataTypeLC.equals("text") || dataType.equals(String.class.getName())) {
            return (T) stringType;
        }
        if (dataTypeLC.equals("list") || dataType.equals(List.class.getName())) {
            return (T) listType;
        }

        throw new DRException("Data type \"" + dataType + "\" is not supported");
    }

    /**
     * bigDecimalType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.BigDecimalType} object.
     */
    public static BigDecimalType bigDecimalType() {
        return bigDecimalType;
    }

    /**
     * bigIntegerType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.BigIntegerType} object.
     */
    public static BigIntegerType bigIntegerType() {
        return bigIntegerType;
    }

    /**
     * booleanType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.BooleanType} object.
     */
    public static BooleanType booleanType() {
        return booleanType;
    }

    /**
     * byteType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.ByteType} object.
     */
    public static ByteType byteType() {
        return byteType;
    }

    /**
     * dateType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.DateType} object.
     */
    public static DateType dateType() {
        return dateType;
    }

    /**
     * dateYearToFractionType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.DateYearToFractionType} object.
     */
    public static DateYearToFractionType dateYearToFractionType() {
        return dateYearToFractionType;
    }

    /**
     * dateYearType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.DateYearType} object.
     */
    public static DateYearType dateYearType() {
        return dateYearType;
    }

    /**
     * dateMonthType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.DateMonthType} object.
     */
    public static DateMonthType dateMonthType() {
        return dateMonthType;
    }

    /**
     * dateDayType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.DateDayType} object.
     */
    public static DateDayType dateDayType() {
        return dateDayType;
    }

    /**
     * dateYearToHourType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.DateYearToHourType} object.
     */
    public static DateYearToHourType dateYearToHourType() {
        return dateYearToHourType;
    }

    /**
     * dateYearToMinuteType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.DateYearToMinuteType} object.
     */
    public static DateYearToMinuteType dateYearToMinuteType() {
        return dateYearToMinuteType;
    }

    /**
     * dateYearToMonthType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.DateYearToMonthType} object.
     */
    public static DateYearToMonthType dateYearToMonthType() {
        return dateYearToMonthType;
    }

    /**
     * dateYearToSecondType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.DateYearToSecondType} object.
     */
    public static DateYearToSecondType dateYearToSecondType() {
        return dateYearToSecondType;
    }

    /**
     * doubleType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.DoubleType} object.
     */
    public static DoubleType doubleType() {
        return doubleType;
    }

    /**
     * floatType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.FloatType} object.
     */
    public static FloatType floatType() {
        return floatType;
    }

    /**
     * characterType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.CharacterType} object.
     */
    public static CharacterType characterType() {
        return characterType;
    }

    /**
     * integerType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.IntegerType} object.
     */
    public static IntegerType integerType() {
        return integerType;
    }

    /**
     * longType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.LongType} object.
     */
    public static LongType longType() {
        return longType;
    }

    /**
     * shortType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.ShortType} object.
     */
    public static ShortType shortType() {
        return shortType;
    }

    /**
     * stringType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.StringType} object.
     */
    public static StringType stringType() {
        return stringType;
    }

    /**
     * listType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.ListType} object.
     */
    public static ListType listType() {
        return listType;
    }

    /**
     * timeHourToFractionType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.TimeHourToFractionType} object.
     */
    public static TimeHourToFractionType timeHourToFractionType() {
        return timeHourToFractionType;
    }

    /**
     * timeHourToMinuteType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.TimeHourToMinuteType} object.
     */
    public static TimeHourToMinuteType timeHourToMinuteType() {
        return timeHourToMinuteType;
    }

    /**
     * timeHourToSecondType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.TimeHourToSecondType} object.
     */
    public static TimeHourToSecondType timeHourToSecondType() {
        return timeHourToSecondType;
    }

    /**
     * percentageType.
     *
     * @return a {@link net.sf.dynamicreports.report.builder.datatype.PercentageType} object.
     */
    public static PercentageType percentageType() {
        return percentageType;
    }
}