package foundation.value;
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import java.text.DateFormat;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import foundation.server.config.DBaseType;
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import foundation.util.Util;
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public class DateTranslator extends ITranslator {
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private static String DateTimeFormat = "yyyy-MM-dd HH:mm:ss";
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private static String DateTimeFormat_Oracle = "yyyy-mm-dd hh24:mi:ss";
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private static String DateFormat = "yyyy-MM-dd";
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private DateFormat dateTimeFormater;
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private DateFormat dateFormater;
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public DateTranslator() {
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dateTimeFormater = new SimpleDateFormat(DateTimeFormat);
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dateFormater = new SimpleDateFormat(DateFormat);
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}
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@Override
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public Date load(Object object){
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if (object instanceof Date) {
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Date result = (Date) object;
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return result;
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}
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else if(object instanceof Long) {
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return new Date((Long)object);
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}
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else if (object instanceof String) {
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String value = (String) object;
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value = value.trim().replace('\\', '-').replace('/', '-');
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Date parsedDate = null;
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int length = value.length();
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if (length == 10) {
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value = value + " 00:00:00";
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}
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if (length == 19 || length == 10) {
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try {
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parsedDate = dateTimeFormater.parse(value);
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} catch (ParseException e) {
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e.printStackTrace();
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}
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}
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return parsedDate;
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}
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return null;
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}
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@Override
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public Date load(String value) throws Exception {
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if (Util.isEmpty(value)) {
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return null;
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}
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value = value.trim().replace('\\', '-').replace('/', '-');
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Date parsedDate = null;
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int length = value.length();
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if (length == 10) {
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value = value + " 00:00:00";
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}
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if (length == 19 || length == 10) {
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parsedDate = dateTimeFormater.parse(value);
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}
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return parsedDate;
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}
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public String toString(Object value) throws Exception {
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if (value == null || value == ValueType.Null) {
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return null;
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}
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Date date = (Date)value;
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return dateFormater.format(date);
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}
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public String toSqlString(DBaseType dbaseType, Object value) throws Exception {
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if (value == null || value == ValueType.Null || Util.isEmpty(value)) {
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return "null";
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}
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Date date = toDate(value);
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if (dbaseType.isMySQL()) {
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return "\"" + dateFormater.format(date) + "\"";
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}
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else if (dbaseType.isSQLServer()) {
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return "'" + dateFormater.format(date) + "'";
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}
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else if (dbaseType.isOracle()) {
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return "to_date(\'" + dateFormater.format(date) + "\', " + Util.quotedStr(DateTimeFormat_Oracle)+ ")";
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}
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else {
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return "\"" + dateFormater.format(date) + "\"";
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}
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}
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public String toJSONString(Object value) throws Exception {
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if (value == null || value == ValueType.Null) {
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return "null";
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}
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//1. 如果数据本身就是 Date， 按着Date转换
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if (value instanceof Date) {
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Date date = (Date)value;
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return "\"" + dateFormater.format(date) + "\"";
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}
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//2. 如果数据是 String， 按着String转
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if (value instanceof String) {
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return "\"" + (String)value + "\"";
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}
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//3. 如果数据是其他类型， 认为无法转换
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return "null";
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}
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public String toSchemaString(Object value) throws Exception {
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if (value == null || value == ValueType.Null) {
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return "";
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}
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Date date = (Date)value;
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return "\"" + dateFormater.format(date) + "\"";
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}
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public Date toDate(Object object) throws Exception {
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if (object == null || object == ValueType.Null) {
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return null;
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}
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if(object instanceof Long) {
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return new Date((Long)object);
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}
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else if (object instanceof String) {
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String value = (String) object;
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value = value.trim().replace('\\', '-').replace('/', '-');
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Date parsedDate = null;
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int length = value.length();
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if (length == 10) {
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value = value + " 00:00:00";
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}
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if (length == 19 || length == 10) {
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parsedDate = dateTimeFormater.parse(value);
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}
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return parsedDate;
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}
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else if (object instanceof Date) {
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Date result = (Date) object;
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return result;
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}
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else if (object instanceof Double) {
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Long longValue = ((Double)object).longValue();
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if (longValue >= 19500101 && longValue <= 21000101) {
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DateFormat dateFormat = new SimpleDateFormat("yyyyMMdd");
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return dateFormat.parse(String.valueOf(longValue));
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}
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else {
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return new Date(longValue);
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}
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}
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else if (object instanceof Integer) {
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Integer value = (Integer)object;
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if (value >= 19500101 && value <= 21000101) {
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DateFormat dateFormat = new SimpleDateFormat("yyyyMMdd");
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return dateFormat.parse(String.valueOf(value));
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}
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else {
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return null;
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}
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}
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else {
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return null;
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}
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}
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@Override
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public Object toTranslatorTypeValue(Object value) throws Exception {
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return toDate(value);
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}
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/*
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@Override
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public Integer toInteger(Object object) throws Exception {
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return null;
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}
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@Override
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public Double toDouble(Object object) throws Exception {
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return null;
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}
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@Override
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public BigDecimal toBigDecimal(Object object) throws Exception {
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return null;
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}
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@Override
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public Boolean toBoolean(Object object) throws Exception {
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return null;
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}
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@Override
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public Clob toClob(Object object) throws Exception {
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return null;
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}
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*/
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@Override
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public void setFormat(String format) {
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if (Util.isEmpty(format)) {
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format = DateTimeFormat;
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}
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this.format = format;
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dateFormater = new SimpleDateFormat(format);
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}
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@Override
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public String checkType(Object object) {
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return null;
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}
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@Override
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public Class<?> getDataClass() {
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return Date.class;
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}
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public static void main(String[] args) throws ParseException {
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DateFormat dateFormater = new SimpleDateFormat("yyyy-MM-dd");
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Date parsedDate = dateFormater.parse("2021-03-09");
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System.out.println(parsedDate);
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}
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}
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