/**
* Parses the text to a builder.
*
* <p>This parses to a {@code DateTimeBuilder} ensuring that the text is fully parsed. This method
* throws {@link DateTimeParseException} if unable to parse, or some other {@code
* DateTimeException} if another date/time problem occurs.
*
* @param text the text to parse, not null
* @return the engine representing the result of the parse, not null
* @throws DateTimeParseException if the parse fails
* @throws DateTimeException if there is a date/time problem
*/
public DateTimeBuilder parseToBuilder(CharSequence text) {
Objects.requireNonNull(text, "text");
String str = text.toString(); // parsing whole String, so this makes sense
ParsePosition pos = new ParsePosition(0);
DateTimeBuilder result = parseToBuilder(str, pos);
if (result == null || pos.getErrorIndex() >= 0 || pos.getIndex() < str.length()) {
String abbr = str.toString();
if (abbr.length() > 64) {
abbr = abbr.substring(0, 64) + "...";
}
if (pos.getErrorIndex() >= 0) {
throw new DateTimeParseException(
"Text '" + abbr + "' could not be parsed at index " + pos.getErrorIndex(),
str,
pos.getErrorIndex());
} else {
throw new DateTimeParseException(
"Text '"
+ abbr
+ "' could not be parsed, unparsed text found at index "
+ pos.getIndex(),
str,
pos.getIndex());
}
}
return result;
}
@Override
public Object parseObject(String s, ParsePosition pos) {
if (pos.getErrorIndex() >= 0)
throw new IllegalArgumentException(pos + " has en error at " + pos.getErrorIndex());
boolean success = false;
Object tmpRes = null;
final ParsePosition tmpPos = new ParsePosition(pos.getIndex());
final Iterator<? extends Format> iter = this.formats.iterator();
while (iter.hasNext() && !success) {
final Format f = iter.next();
mutateTo(tmpPos, pos);
tmpRes = f.parseObject(s, tmpPos);
success = tmpPos.getIndex() != pos.getIndex() && tmpPos.getErrorIndex() < 0;
}
final Object res;
if (!success) {
// fail with the same as format()
res = this.formats.get(this.formatIndex).parseObject(s, pos);
} else {
res = tmpRes;
mutateTo(pos, tmpPos);
}
return res;
}
/**
* Looks at the start of a string for a day (defined in the user's locale). If found, returns
* String array containing the match (1st elem) and the remaining string (2nd elem). Otherwise,
* returns null.
*
* @param input
* @return
*/
@Override
public String[] find(final String input) {
result = null;
pos.setIndex(0);
result = sdf.parse(input, pos);
if (result == null) return null;
return new String[] {input.substring(0, pos.getIndex()), input.substring(pos.getIndex())};
}
private Number parseNumber(String val, NumberFormat numFormat) throws ParseException {
final ParsePosition parsePos = new ParsePosition(0);
final Number num = numFormat.parse(val, parsePos);
if (parsePos.getIndex() != val.length()) {
throw new ParseException("illegal number format", parsePos.getIndex());
}
return num;
}
public void test(TestHarness harness) {
ParsePosition pp = new ParsePosition(69);
harness.check(pp.getIndex(), 69, "getIndex() post-create");
pp.setIndex(666);
harness.check(pp.getIndex(), 666, "set/getIndex()");
harness.check(pp.getErrorIndex(), -1, "getErrorIndex() no error");
pp.setErrorIndex(65536);
harness.check(pp.getErrorIndex(), 65536, "set/getErrorIndex()");
harness.debug(pp.toString());
}
/** Does the parse-work without the mandatory-check */
private String parse2(String external) throws FmtParseException {
// trim blanks on both sides
if (external == null) return "";
external = external.trim();
if (external.length() == 0) return "";
else {
ParsePosition pp = new ParsePosition(0);
Date date = null;
date = dateFormat_.parse(external, pp);
if (date == null || (pp.getIndex() != external.length() && pp.getIndex() > 0)) {
throw new FmtParseException("ATSSyntax", getSampleTS());
}
return TimeStampUtil.date2Internal(date);
}
}
public void outputValues(String[] values) {
if (values.length > 1) {
writer.print("[");
}
for (int i = 0; i < values.length; i++) {
String value = values[i];
if (i > 0) {
writer.print(", ");
}
if (value == null || value.length() == 0) {
writer.print("null");
} else {
// Is it a number?
ParsePosition pos = new ParsePosition(0);
formatter.parse(value, pos);
if (value.length() == pos.getIndex()) {
// It's a number. Remove leading zeros and output
value = value.replaceFirst("^0+(\\d)", "$1");
writer.print(value);
} else {
// Not a number, escape it
gson.toJson(value, writer);
}
}
}
if (values.length > 1) {
writer.print("]");
}
}
/**
* Checks if the value can safely be converted to a byte primitive.
*
* @param value The value validation is being performed on.
* @param locale The locale to use to parse the number (system default if null)
* @return the converted Byte value.
*/
public static Byte formatByte(String value, Locale locale) {
Byte result = null;
if (value != null) {
NumberFormat formatter = null;
if (locale != null) {
formatter = NumberFormat.getNumberInstance(locale);
} else {
formatter = NumberFormat.getNumberInstance(Locale.getDefault());
}
formatter.setParseIntegerOnly(true);
ParsePosition pos = new ParsePosition(0);
Number num = formatter.parse(value, pos);
// If there was no error and we used the whole string
if (pos.getErrorIndex() == -1
&& pos.getIndex() == value.length()
&& num.doubleValue() >= Byte.MIN_VALUE
&& num.doubleValue() <= Byte.MAX_VALUE) {
result = new Byte(num.byteValue());
}
}
return result;
}
private static Date parseDateWithLeniency(String str, String[] parsePatterns, boolean lenient)
throws ParseException {
if ((str == null) || (parsePatterns == null)) {
throw new IllegalArgumentException("Date and Patterns must not be null");
}
SimpleDateFormat parser = new SimpleDateFormat();
parser.setLenient(lenient);
ParsePosition pos = new ParsePosition(0);
for (int i = 0; i < parsePatterns.length; i++) {
String pattern = parsePatterns[i];
if (parsePatterns[i].endsWith("ZZ")) {
pattern = pattern.substring(0, pattern.length() - 1);
}
parser.applyPattern(pattern);
pos.setIndex(0);
String str2 = str;
if (parsePatterns[i].endsWith("ZZ")) {
int signIdx = indexOfSignChars(str2, 0);
while (signIdx >= 0) {
str2 = reformatTimezone(str2, signIdx);
signIdx = indexOfSignChars(str2, ++signIdx);
}
}
Date date = parser.parse(str2, pos);
if ((date != null) && (pos.getIndex() == str2.length())) {
return date;
}
}
throw new ParseException("Unable to parse the date: " + str, -1);
}
/**
* Parses date given in parameter according the ISO-8601 standard. This parameter should follow a
* syntax defined in the {@link #PATTERNS} array to be validated.
*
* @param value The date to parse.
* @return A date found in the request.
* @throws ParseException if the string can not be parsed.
*/
static Object getFuzzyDate(final String value) throws ParseException {
String computedValue = value;
// special handling for current keyword (we accept both wms and wcs ways)
if (computedValue.equalsIgnoreCase("current") || computedValue.equalsIgnoreCase("now")) {
return null;
}
// Accept new "present" keyword, which actually fills in present time as now should have
if (computedValue.equalsIgnoreCase("present")) {
Calendar now = Calendar.getInstance();
now.set(Calendar.MILLISECOND, 0);
computedValue = FormatAndPrecision.MILLISECOND.getFormat().format(now.getTime());
}
for (FormatAndPrecision f : FormatAndPrecision.values()) {
ParsePosition pos = new ParsePosition(0);
Date time = f.getFormat().parse(computedValue, pos);
if (pos.getIndex() == computedValue.length()) {
DateRange range = f.expand(time);
if (range.getMinValue().equals(range.getMaxValue())) {
return range.getMinValue();
} else {
return range;
}
}
}
throw new ParseException("Invalid date: " + value, 0);
}
public void testPartialParse() throws Exception {
java.text.ParsePosition pos = new java.text.ParsePosition(0);
String timestamp = "2007-08-13T19:51:23Z";
Date result = df.parse(timestamp + "hello", pos);
assertEquals(date, result);
assertEquals(timestamp.length(), pos.getIndex());
}
/**
* Attempts to pass a HTTP date.
*
* @param date The date to parse
* @return The parsed date, or null if parsing failed
*/
public static Date parseDate(final String date) {
/*
IE9 sends a superflous lenght parameter after date in the
If-Modified-Since header, which needs to be stripped before
parsing.
*/
final int semicolonIndex = date.indexOf(';');
final String trimmedDate = semicolonIndex >= 0 ? date.substring(0, semicolonIndex) : date;
ParsePosition pp = new ParsePosition(0);
SimpleDateFormat dateFormat = RFC1123_PATTERN_FORMAT.get();
Date val = dateFormat.parse(trimmedDate, pp);
if (val != null && pp.getIndex() == trimmedDate.length()) {
return val;
}
pp = new ParsePosition(0);
dateFormat = new SimpleDateFormat(RFC1036_PATTERN, LOCALE_US);
dateFormat.setTimeZone(GMT_ZONE);
val = dateFormat.parse(trimmedDate, pp);
if (val != null && pp.getIndex() == trimmedDate.length()) {
return val;
}
pp = new ParsePosition(0);
dateFormat = new SimpleDateFormat(ASCITIME_PATTERN, LOCALE_US);
dateFormat.setTimeZone(GMT_ZONE);
val = dateFormat.parse(trimmedDate, pp);
if (val != null && pp.getIndex() == trimmedDate.length()) {
return val;
}
pp = new ParsePosition(0);
dateFormat = new SimpleDateFormat(OLD_COOKIE_PATTERN, LOCALE_US);
dateFormat.setTimeZone(GMT_ZONE);
val = dateFormat.parse(trimmedDate, pp);
if (val != null && pp.getIndex() == trimmedDate.length()) {
return val;
}
return null;
}
/* (non-Javadoc)
* @see java.text.Format#parseObject(java.lang.String, java.text.ParsePosition)
*/
public Object parseObject(String durationString, ParsePosition pos) {
Object result = null;
if (durationString.length() == 0) return null;
if (durationString.charAt(pos.getIndex()) == '+') // if string begins with + sign, ignore it
pos.setIndex(pos.getIndex() + 1);
Number numberResult = DECIMAL_FORMAT.parse(durationString, pos);
if (numberResult == null) return null;
String durationPart = durationString.substring(pos.getIndex());
durationPart = durationPart.trim();
Matcher matcher;
for (int i = 0; i < TYPE_COUNT; i++) { // find hte appropriate units
matcher = pattern[i].matcher(durationPart);
if (matcher.matches()) {
int timeUnit =
(matcher.group(1) != null)
? i
: TimeUnit
.NONE; // first group is units. If no units, then it will match, but should use
// default: NONE
double value = numberResult.doubleValue();
if (timeUnit == TimeUnit.PERCENT || timeUnit == TimeUnit.ELAPSED_PERCENT) value /= 100.0;
if (timeUnit == TimeUnit.NONE && isWork) {
if (canBeNonTemporal) timeUnit = TimeUnit.NON_TEMPORAL;
else
timeUnit =
ScheduleOption.getInstance()
.getWorkUnit(); // use default work unit if work and nothing entered
}
long longResult = Duration.getInstance(value, timeUnit);
if (Duration.millis(longResult) > Duration.MAX_DURATION) // check for too big
return null;
if (matcher.group(2).length() != 0) { // second group is estimated
longResult = Duration.setAsEstimated(longResult, true);
}
result = new Duration(longResult);
return result;
}
}
return null;
}
private void validateDate(List<String> dateStrings) {
SimpleDateFormat formatter = new SimpleDateFormat(this.dateFormat);
formatter.setLenient(false);
for (String dateString : dateStrings) {
try {
ParsePosition pos = new ParsePosition(0);
formatter.parse(dateString, pos);
if (pos.getIndex() != dateString.length()) {
throw new ParseException("Could not parse date parameter", pos.getIndex());
}
} catch (ParseException pe) {
throw new ParameterValidationException(
name, i18n.tr("Invalid date string. Expected format: {0}", dateFormat));
}
}
}
public static boolean isAmount(String value) {
if (StringUtils.isEmpty(value)) {
return false;
}
ParsePosition pos = new ParsePosition(0);
new DecimalFormat(Constants.AMOUNT_FORMAT).parse(value, pos);
return pos.getIndex() == value.length();
}
/**
* Parses a string using {@link SimpleDateFormat} and a given pattern. The entire string must
* match the pattern specified.
*
* @param s string to be parsed
* @param pattern {@link SimpleDateFormat} pattern
* @param tz time zone in which to interpret string. Defaults to the Java default time zone
* @return a Calendar initialized with the parsed value, or null if parsing failed. If returned,
* the Calendar is configured to the GMT time zone.
*/
public static Calendar parseDateFormat(String s, String pattern, TimeZone tz) {
assert pattern != null;
ParsePosition pp = new ParsePosition(0);
Calendar ret = parseDateFormat(s, pattern, tz, pp);
if (pp.getIndex() != s.length()) {
// Didn't consume entire string - not good
return null;
}
return ret;
}
public static Date parseDatetime(String str) {
for (String formatStr : DATETIME_FORMATS) {
SimpleDateFormat fmt = new SimpleDateFormat(formatStr);
fmt.setLenient(false);
ParsePosition pp = new ParsePosition(0);
Date d = fmt.parse(str, pp);
if (d != null && pp.getIndex() == str.length()) return d;
}
return null;
}
/**
* @tests java.text.MessageFormat#parseObject(java.lang.String, java.text.ParsePosition) Test of
* method java.text.MessageFormat#parseObject(java.lang.String, java.text.ParsePosition). Case
* 1: Parsing of correct data string. Case 2: Parsing of partial correct data string. Case 3:
* Try to use argument ParsePosition as null.
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "parseObject",
args = {java.lang.String.class, java.text.ParsePosition.class})
public void test_parseObjectLjava_lang_StringLjavajava_text_ParsePosition() {
MessageFormat mf = new MessageFormat("{0,number,#.##}, {0,number,#.#}");
try {
// case 1: Try to parse correct data string.
Object[] objs = {new Double(3.1415)};
String result = mf.format(objs);
// result now equals "3.14, 3.1"
Object[] res = null;
ParsePosition pp = new ParsePosition(0);
int parseIndex = pp.getIndex();
res = (Object[]) mf.parseObject(result, pp);
assertTrue("Parse operation return null", res != null);
assertTrue("parse operation return array with incorrect length", 1 == res.length);
assertTrue("ParseIndex is incorrect", pp.getIndex() != parseIndex);
assertTrue("Result object is incorrect", new Double(3.1).equals(res[0]));
// case 2: Try to parse partially correct data string.
pp.setIndex(0);
char[] cur = result.toCharArray();
cur[cur.length / 2] = 'Z';
String partialCorrect = new String(cur);
res = (Object[]) mf.parseObject(partialCorrect, pp);
assertTrue("Parse operation return null", res == null);
assertTrue("ParseIndex is incorrect", pp.getIndex() == 0);
assertTrue("ParseErrorIndex is incorrect", pp.getErrorIndex() == cur.length / 2);
// case 3: Try to use argument ParsePosition as null.
try {
mf.parseObject(result, null);
fail("Expected NullPointerException was not thrown");
} catch (NullPointerException e) {
// expected
}
} catch (Exception e) {
fail("Unexpected exception " + e.toString());
}
}
/**
* Parses the supplied string to see if it looks like a date. If so, returns the same date in a
* cleaned-up format for the user. Otherwise, returns the supplied string unchanged.
*/
public static String formatDate(Context context, String string) {
if (string == null) {
return null;
}
string = string.trim();
if (string.length() == 0) {
return string;
}
ParsePosition parsePosition = new ParsePosition(0);
Date date;
synchronized (NO_YEAR_DATE_FORMAT) {
date = NO_YEAR_DATE_FORMAT.parse(string, parsePosition);
}
if (parsePosition.getIndex() == string.length()) {
java.text.DateFormat outFormat =
isMonthBeforeDate(context)
? FORMAT_WITHOUT_YEAR_MONTH_FIRST
: FORMAT_WITHOUT_YEAR_DATE_FIRST;
synchronized (outFormat) {
return outFormat.format(date);
}
}
for (int i = 0; i < DATE_FORMATS.length; i++) {
SimpleDateFormat f = DATE_FORMATS[i];
synchronized (f) {
parsePosition.setIndex(0);
date = f.parse(string, parsePosition);
if (parsePosition.getIndex() == string.length()) {
java.text.DateFormat outFormat = DateFormat.getDateFormat(context);
outFormat.setTimeZone(UTC_TIMEZONE);
return outFormat.format(date);
}
}
}
return string;
}
@Override
public Date parse(String i, ParsePosition p) {
/* delegate to SimpleDateFormat for easy stuff */
Date d = super.parse(i, p);
int milliIndex = p.getIndex();
/* worry about the milliseconds ourselves */
if (null != d
&& -1 == p.getErrorIndex()
&& milliIndex + 1 < i.length()
&& '.' == i.charAt(milliIndex)) {
p.setIndex(++milliIndex); // NOTE: ++ to chomp '.'
Number millis = millisParser.parse(i, p);
if (-1 == p.getErrorIndex()) {
int endIndex = p.getIndex();
d =
new Date(
d.getTime()
+ (long) (millis.doubleValue() * Math.pow(10, (3 - endIndex + milliIndex))));
}
}
return d;
}
/**
* Parses the text to a builder.
*
* <p>This parses to a {@code DateTimeBuilder} but does not require the input to be fully parsed.
*
* <p>This method does not throw {@link DateTimeParseException}. Instead, errors are returned
* within the state of the specified parse position. Callers must check for errors before using
* the context.
*
* <p>This method may throw some other {@code DateTimeException} if a date/time problem occurs.
*
* @param text the text to parse, not null
* @param position the position to parse from, updated with length parsed and the index of any
* error, not null
* @return the parsed text, null only if the parse results in an error
* @throws IndexOutOfBoundsException if the position is invalid
* @throws DateTimeParseException if the parse fails
* @throws DateTimeException if there is a date/time problem
*/
public DateTimeBuilder parseToBuilder(CharSequence text, ParsePosition position) {
Objects.requireNonNull(text, "text");
Objects.requireNonNull(position, "position");
DateTimeParseContext context = new DateTimeParseContext(locale, symbols);
int pos = position.getIndex();
pos = printerParser.parse(context, text, pos);
if (pos < 0) {
position.setErrorIndex(~pos);
return null;
}
position.setIndex(pos);
return context.toBuilder();
}
/**
* Parses the supplied string to see if it looks like a date. If so, returns the date. Otherwise,
* returns null.
*/
public static Date parseDate(String string) {
ParsePosition parsePosition = new ParsePosition(0);
for (int i = 0; i < DATE_FORMATS.length; i++) {
SimpleDateFormat f = DATE_FORMATS[i];
synchronized (f) {
parsePosition.setIndex(0);
Date date = f.parse(string, parsePosition);
if (parsePosition.getIndex() == string.length()) {
return date;
}
}
}
return null;
}
@Override
public Number parse(String source, ParsePosition pos) {
if (source == null) {
pos.setIndex(1); // otherwise Format thinks parse failed
return null;
}
if (source.trim().equals("")) {
pos.setIndex(1); // otherwise Format thinks parse failed
return null;
}
Number val = childFormat.parse(source, pos);
/*
* The default behaviour of Format objects is to keep parsing as long as
* they encounter valid data. By for table editing we don't want
* trailing bad data to be considered a "valid value". So set the index
* to 0 so that the parse(Object) method knows that we had an error.
*/
if (pos.getIndex() != source.length()) {
pos.setErrorIndex(pos.getIndex());
pos.setIndex(0);
}
return val;
}
@Override
public Object fromString(final String value, final Locale locale) {
ParsePosition parsePosition = new ParsePosition(0);
String trimedValue = value.replaceAll(" ", "");
DecimalFormat formatter = (DecimalFormat) NumberFormat.getNumberInstance(locale);
formatter.setParseBigDecimal(true);
Object parsedValue = formatter.parseObject(trimedValue, parsePosition);
if (parsePosition.getIndex() == trimedValue.length()) {
return parsedValue;
}
return value;
}
protected String isCorrectString(String value) {
String text = value.trim();
if (sMinValue.equalsIgnoreCase(text) || sMaxValue.equalsIgnoreCase(text)) return null;
Number result = null;
if ((fNumberType == DOUBLE || fNumberType == FLOAT)
&& (text.indexOf('e') != -1 || text.indexOf('E') != -1)) {
// We have a double/float with an exponent. This is scientific notation. Formatter handles
// them badly, so use parse instead.
try {
if (fNumberType == DOUBLE) {
result = new Double(Double.parseDouble(text));
} else {
result = new Float(Float.parseFloat(text));
}
} catch (NumberFormatException e) {
}
} else {
// integral or not scientific notation. Let formatter handle it.
ParsePosition parsePosition = new ParsePosition(0);
result = fFormatter.parse(text, parsePosition);
if (parsePosition.getErrorIndex() != -1 || parsePosition.getIndex() != text.length())
result = null; // Some error
// Check for out of bounds with long type
if (fNumberType == LONG && result instanceof Double) {
result =
(result.doubleValue() < 0)
? MinmaxValidator.LONG_UNDERFLOW
: MinmaxValidator.LONG_OVERFLOW;
}
}
if (result != null) {
// Now see if it is valid for the requested type.
MinmaxValidator v = sMinMaxValidators[fNumberType];
// Double/Float are special because the min/MIN are on the absolute value, not signed value.
if (fNumberType == DOUBLE || fNumberType == FLOAT) {
double d = result.doubleValue();
if (d == 0.0 || d == -0.0) return null; // +/- zero are valid values.
result = new Double(Math.abs(d));
}
if (v != null) {
String e = v.isValid(result);
if (e == null || e.length() == 0) return null;
return e; // It didn't fit in a the number type.
}
}
return (fFormatter.isParseIntegerOnly() ? sNotIntegerError : sNotNumberError);
}
/**
* Parse the input using a NumberFormatter. If the number cannot be parsed, the error key
* <em>number.invalidNumber</em> will be added to the errors.
*/
protected Number parse(String input, Collection<ValidationError> errors) {
input = preprocess(input);
ParsePosition pp = new ParsePosition(0);
for (NumberFormat format : this.formats) {
pp.setIndex(0);
Number number = format.parse(input, pp);
if (number != null && input.length() == pp.getIndex()) return number;
}
// If we've gotten here we could not parse the number
errors.add(new ScopedLocalizableError("converter.number", "invalidNumber"));
return null;
}
/** Returns the date for {@code value}. Returns null if the value couldn't be parsed. */
public static Date parse(String value) {
if (value.length() == 0) {
return null;
}
ParsePosition position = new ParsePosition(0);
Date result = STANDARD_DATE_FORMAT.get().parse(value, position);
if (position.getIndex() == value.length()) {
// STANDARD_DATE_FORMAT must match exactly; all text must be consumed, e.g. no ignored
// non-standard trailing "+01:00". Those cases are covered below.
return result;
}
synchronized (BROWSER_COMPATIBLE_DATE_FORMAT_STRINGS) {
for (int i = 0, count = BROWSER_COMPATIBLE_DATE_FORMAT_STRINGS.length; i < count; i++) {
DateFormat format = BROWSER_COMPATIBLE_DATE_FORMATS[i];
if (format == null) {
format = new SimpleDateFormat(BROWSER_COMPATIBLE_DATE_FORMAT_STRINGS[i], Locale.US);
// Set the timezone to use when interpreting formats that don't have a timezone. GMT is
// specified by RFC 2616.
format.setTimeZone(GMT);
BROWSER_COMPATIBLE_DATE_FORMATS[i] = format;
}
position.setIndex(0);
result = format.parse(value, position);
if (position.getIndex() != 0) {
// Something was parsed. It's possible the entire string was not consumed but we ignore
// that. If any of the BROWSER_COMPATIBLE_DATE_FORMAT_STRINGS ended in "'GMT'" we'd have
// to also check that position.getIndex() == value.length() otherwise parsing might have
// terminated early, ignoring things like "+01:00". Leaving this as != 0 means that any
// trailing junk is ignored.
return result;
}
}
}
return null;
}
protected void load() throws IOException {
BufferedReader is = new BufferedReader(new FileReader("ReminderService.txt"));
SimpleDateFormat formatter = new SimpleDateFormat("yyyy MM dd hh mm");
String aLine;
while ((aLine = is.readLine()) != null) {
ParsePosition pp = new ParsePosition(0);
Date date = formatter.parse(aLine, pp);
if (date == null) {
message("Invalid date in " + aLine);
continue;
}
String mesg = aLine.substring(pp.getIndex());
l.add(new Item(date, mesg));
}
}
@Override
public Result<Date> convertToModel(String value, ValueContext context) {
if (value == null) {
return Result.ok(null);
}
// Remove leading and trailing white space
value = value.trim();
ParsePosition parsePosition = new ParsePosition(0);
Date parsedValue = getFormat(context.getLocale().orElse(null)).parse(value, parsePosition);
if (parsePosition.getIndex() != value.length()) {
return Result.error("Could not convert '" + value);
}
return Result.ok(parsedValue);
}
/**
* Parses a string using {@link SimpleDateFormat} and a given pattern, and if present, parses a
* fractional seconds component. The fractional seconds component must begin with a decimal point
* ('.') followed by numeric digits. The precision is rounded to a maximum of 3 digits of
* fractional seconds precision (to obtain milliseconds).
*
* @param s string to be parsed
* @param pattern {@link SimpleDateFormat} pattern
* @param tz time zone in which to interpret string. Defaults to the local time zone
* @return a {@link DateTimeUtils.PrecisionTime PrecisionTime} initialized with the parsed value,
* or null if parsing failed. The PrecisionTime contains a GMT Calendar and a precision.
*/
public static PrecisionTime parsePrecisionDateTimeLiteral(String s, String pattern, TimeZone tz) {
assert pattern != null;
ParsePosition pp = new ParsePosition(0);
Calendar cal = parseDateFormat(s, pattern, tz, pp);
if (cal == null) {
return null; // Invalid date/time format
}
// Note: the Java SimpleDateFormat 'S' treats any number after
// the decimal as milliseconds. That means 12:00:00.9 has 9
// milliseconds and 12:00:00.9999 has 9999 milliseconds.
int p = 0;
if (pp.getIndex() < s.length()) {
// Check to see if rest is decimal portion
if (s.charAt(pp.getIndex()) != '.') {
return null;
}
// Skip decimal sign
pp.setIndex(pp.getIndex() + 1);
// Parse decimal portion
if (pp.getIndex() < s.length()) {
String secFraction = s.substring(pp.getIndex());
if (!secFraction.matches("\\d+")) {
return null;
}
NumberFormat nf = NumberFormat.getIntegerInstance();
Number num = nf.parse(s, pp);
if ((num == null) || (pp.getIndex() != s.length())) {
// Invalid decimal portion
return null;
}
// Determine precision - only support prec 3 or lower
// (milliseconds) Higher precisions are quietly rounded away
p = Math.min(3, secFraction.length());
// Calculate milliseconds
int ms = (int) Math.round(num.longValue() * Math.pow(10, 3 - secFraction.length()));
cal.add(Calendar.MILLISECOND, ms);
}
}
assert pp.getIndex() == s.length();
PrecisionTime ret = new PrecisionTime(cal, p);
return ret;
}