Examples of DateMathParser

org.apache.solr.util.DateMathParser
A Simple Utility class for parsing "math" like strings relating to Dates.
The basic syntax support addition, subtraction and rounding at various levels of granularity (or "units"). Commands can be chained together and are parsed from left to right. '+' and '-' denote addition and subtraction, while '/' denotes "round". Round requires only a unit, while addition/subtraction require an integer value and a unit. Command strings must not include white space, but the "No-Op" command (empty string) is allowed....
```
 /HOUR ... Round to the start of the current hour /DAY ... Round to the start of the current day +2YEARS ... Exactly two years in the future from now -1DAY ... Exactly 1 day prior to now /DAY+6MONTHS+3DAYS ... 6 months and 3 days in the future from the start of the current day +6MONTHS+3DAYS/DAY ... 6 months and 3 days in the future from now, rounded down to nearest day 
```
All commands are relative to a "now" which is fixed in an instance of DateMathParser such that p.parseMath("+0MILLISECOND").equals(p.parseMath("+0MILLISECOND")) no matter how many wall clock milliseconds elapse between the two distinct calls to parse (Assuming no other thread calls "setNow" in the interim)

Multiple aliases exist for the various units of time (ie: MINUTE and MINUTES; MILLI, MILLIS, MILLISECOND, and MILLISECONDS.) The complete list can be found by inspecting the keySet of CALENDAR_UNITS.
@version $Id:$
org.elasticsearch.common.joda.DateMathParser

Examples of org.apache.solr.util.DateMathParser

  protected DateField f = null;
  protected DateMathParser p = null;
  
  public void setUp() throws Exception {
    super.setUp();
    p = new DateMathParser(UTC, Locale.US);
    f = new DateField();
    // so test can be run against Solr 1.2...
    try {
      Class clazz = Class.forName("org.apache.solr.schema.LegacyDateField");
      f = (DateField) clazz.newInstance();

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Examples of org.apache.solr.util.DateMathParser

          (SolrException.ErrorCode.BAD_REQUEST,
           "date facet 'end' comes before 'start': "+endS+" < "+startS);
      }


      final String gap = required.getFieldParam(f,FacetParams.FACET_DATE_GAP);
      final DateMathParser dmp = new DateMathParser(ft.UTC, Locale.US);
      dmp.setNow(NOW);
      
      try {
        
        Date low = start;
        while (low.before(end)) {
          dmp.setNow(low);
          final String lowI = ft.toInternal(low);
          final String label = ft.indexedToReadable(lowI);
          Date high = dmp.parseMath(gap);
          if (end.before(high)) {
            if (params.getFieldBool(f,FacetParams.FACET_DATE_HARD_END,false)) {
              high = end;
            } else {
              end = high;

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Examples of org.apache.solr.util.DateMathParser

    
  }
  
  public void testParseStatelessness() throws Exception {


    DateMathParser p = new DateMathParser(UTC, Locale.US);
    p.setNow(parser.parse("2001-07-04T12:08:56.235"));


    String e = fmt.format(p.parseMath(""));
    
    Date trash = p.parseMath("+7YEARS");
    trash = p.parseMath("/MONTH");
    trash = p.parseMath("-5DAYS+20MINUTES");
    Thread.currentThread().sleep(5);
    
    String a = fmt.format(p.parseMath(""));
    assertEquals("State of DateMathParser changed", e, a);
  }

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Examples of org.apache.solr.util.DateMathParser

    assertEquals("State of DateMathParser changed", e, a);
  }
    
  public void testParseMath() throws Exception {


    DateMathParser p = new DateMathParser(UTC, Locale.US);
    p.setNow(parser.parse("2001-07-04T12:08:56.235"));


    // No-Op
    assertMath("2001-07-04T12:08:56.235", p, "");
    
    // simple round
    assertMath("2001-07-04T12:08:56.000", p, "/SECOND");
    assertMath("2001-07-04T12:08:00.000", p, "/MINUTE");
    assertMath("2001-07-04T12:00:00.000", p, "/HOUR");
    assertMath("2001-07-04T00:00:00.000", p, "/DAY");
    assertMath("2001-07-01T00:00:00.000", p, "/MONTH");
    assertMath("2001-01-01T00:00:00.000", p, "/YEAR");


    // simple addition
    assertMath("2001-07-04T12:08:56.236", p, "+1MILLISECOND");
    assertMath("2001-07-04T12:08:57.235", p, "+1SECOND");
    assertMath("2001-07-04T12:09:56.235", p, "+1MINUTE");
    assertMath("2001-07-04T13:08:56.235", p, "+1HOUR");
    assertMath("2001-07-05T12:08:56.235", p, "+1DAY");
    assertMath("2001-08-04T12:08:56.235", p, "+1MONTH");
    assertMath("2002-07-04T12:08:56.235", p, "+1YEAR");


    // simple subtraction
    assertMath("2001-07-04T12:08:56.234", p, "-1MILLISECOND");
    assertMath("2001-07-04T12:08:55.235", p, "-1SECOND");
    assertMath("2001-07-04T12:07:56.235", p, "-1MINUTE");
    assertMath("2001-07-04T11:08:56.235", p, "-1HOUR");
    assertMath("2001-07-03T12:08:56.235", p, "-1DAY");
    assertMath("2001-06-04T12:08:56.235", p, "-1MONTH");
    assertMath("2000-07-04T12:08:56.235", p, "-1YEAR");


    // simple '+/-'
    assertMath("2001-07-04T12:08:56.235", p, "+1MILLISECOND-1MILLISECOND");
    assertMath("2001-07-04T12:08:56.235", p, "+1SECOND-1SECOND");
    assertMath("2001-07-04T12:08:56.235", p, "+1MINUTE-1MINUTE");
    assertMath("2001-07-04T12:08:56.235", p, "+1HOUR-1HOUR");
    assertMath("2001-07-04T12:08:56.235", p, "+1DAY-1DAY");
    assertMath("2001-07-04T12:08:56.235", p, "+1MONTH-1MONTH");
    assertMath("2001-07-04T12:08:56.235", p, "+1YEAR-1YEAR");


    // simple '-/+'
    assertMath("2001-07-04T12:08:56.235", p, "-1MILLISECOND+1MILLISECOND");
    assertMath("2001-07-04T12:08:56.235", p, "-1SECOND+1SECOND");
    assertMath("2001-07-04T12:08:56.235", p, "-1MINUTE+1MINUTE");
    assertMath("2001-07-04T12:08:56.235", p, "-1HOUR+1HOUR");
    assertMath("2001-07-04T12:08:56.235", p, "-1DAY+1DAY");
    assertMath("2001-07-04T12:08:56.235", p, "-1MONTH+1MONTH");
    assertMath("2001-07-04T12:08:56.235", p, "-1YEAR+1YEAR");


    // more complex stuff
    assertMath("2000-07-04T12:08:56.236", p, "+1MILLISECOND-1YEAR");
    assertMath("2000-07-04T12:08:57.235", p, "+1SECOND-1YEAR");
    assertMath("2000-07-04T12:09:56.235", p, "+1MINUTE-1YEAR");
    assertMath("2000-07-04T13:08:56.235", p, "+1HOUR-1YEAR");
    assertMath("2000-07-05T12:08:56.235", p, "+1DAY-1YEAR");
    assertMath("2000-08-04T12:08:56.235", p, "+1MONTH-1YEAR");
    assertMath("2000-07-04T12:08:56.236", p, "-1YEAR+1MILLISECOND");
    assertMath("2000-07-04T12:08:57.235", p, "-1YEAR+1SECOND");
    assertMath("2000-07-04T12:09:56.235", p, "-1YEAR+1MINUTE");
    assertMath("2000-07-04T13:08:56.235", p, "-1YEAR+1HOUR");
    assertMath("2000-07-05T12:08:56.235", p, "-1YEAR+1DAY");
    assertMath("2000-08-04T12:08:56.235", p, "-1YEAR+1MONTH");
    assertMath("2000-07-01T00:00:00.000", p, "-1YEAR+1MILLISECOND/MONTH");
    assertMath("2000-07-04T00:00:00.000", p, "-1YEAR+1SECOND/DAY");
    assertMath("2000-07-04T00:00:00.000", p, "-1YEAR+1MINUTE/DAY");
    assertMath("2000-07-04T13:00:00.000", p, "-1YEAR+1HOUR/HOUR");
    assertMath("2000-07-05T12:08:56.000", p, "-1YEAR+1DAY/SECOND");
    assertMath("2000-08-04T12:08:56.000", p, "-1YEAR+1MONTH/SECOND");


    // "tricky" cases
    p.setNow(parser.parse("2006-01-31T17:09:59.999"));
    assertMath("2006-02-28T17:09:59.999", p, "+1MONTH");
    assertMath("2008-02-29T17:09:59.999", p, "+25MONTH");
    assertMath("2006-02-01T00:00:00.000", p, "/MONTH+35DAYS/MONTH");
    assertMath("2006-01-31T17:10:00.000", p, "+3MILLIS/MINUTE");

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Examples of org.apache.solr.util.DateMathParser

    
  }
  
  public void testParseMathExceptions() throws Exception {
    
    DateMathParser p = new DateMathParser(UTC, Locale.US);
    p.setNow(parser.parse("2001-07-04T12:08:56.235"));
    
    Map<String,Integer> badCommands = new HashMap<String,Integer>();
    badCommands.put("/", 1);
    badCommands.put("+", 1);
    badCommands.put("-", 1);
    badCommands.put("/BOB", 1);
    badCommands.put("+SECOND", 1);
    badCommands.put("-2MILLI/", 4);
    badCommands.put(" +BOB", 0);
    badCommands.put("+2SECONDS ", 3);
    badCommands.put("/4", 1);
    badCommands.put("?SECONDS", 0);


    for (String command : badCommands.keySet()) {
      try {
        Date out = p.parseMath(command);
        fail("Didn't generate ParseException for: " + command);
      } catch (ParseException e) {
        assertEquals("Wrong pos for: " + command + " => " + e.getMessage(),
                     badCommands.get(command).intValue(), e.getErrorOffset());

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Examples of org.apache.solr.util.DateMathParser

    int len=val.length();
    if (val.charAt(len-1)=='Z') {
      return val.substring(0,len-1);
    } else if (val.startsWith("NOW")) {
      /* :TODO: let Locale/TimeZone come from init args for rounding only */
      DateMathParser p = new DateMathParser(UTC, Locale.US);
      try {
        return toInternal(p.parseMath(val.substring(3)));
      } catch (ParseException e) {
        throw new SolrException( SolrException.ErrorCode.BAD_REQUEST,"Invalid Date Math String:'" +val+'\'',e);
      }
    }
    throw new SolrException( SolrException.ErrorCode.BAD_REQUEST,"Invalid Date String:'" +val+'\'');

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Examples of org.apache.solr.util.DateMathParser

    
  }
  
  public void testParseStatelessness() throws Exception {


    DateMathParser p = new DateMathParser(UTC, Locale.US);
    p.setNow(parser.parse("2001-07-04T12:08:56.235"));


    String e = fmt.format(p.parseMath(""));
    
    Date trash = p.parseMath("+7YEARS");
    trash = p.parseMath("/MONTH");
    trash = p.parseMath("-5DAYS+20MINUTES");
    Thread.currentThread().sleep(5);
    
    String a = fmt.format(p.parseMath(""));
    assertEquals("State of DateMathParser changed", e, a);
  }

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Examples of org.apache.solr.util.DateMathParser

    assertEquals("State of DateMathParser changed", e, a);
  }
    
  public void testParseMath() throws Exception {


    DateMathParser p = new DateMathParser(UTC, Locale.US);
    p.setNow(parser.parse("2001-07-04T12:08:56.235"));


    // No-Op
    assertMath("2001-07-04T12:08:56.235", p, "");
    
    // simple round
    assertMath("2001-07-04T12:08:56.000", p, "/SECOND");
    assertMath("2001-07-04T12:08:00.000", p, "/MINUTE");
    assertMath("2001-07-04T12:00:00.000", p, "/HOUR");
    assertMath("2001-07-04T00:00:00.000", p, "/DAY");
    assertMath("2001-07-01T00:00:00.000", p, "/MONTH");
    assertMath("2001-01-01T00:00:00.000", p, "/YEAR");


    // simple addition
    assertMath("2001-07-04T12:08:56.236", p, "+1MILLISECOND");
    assertMath("2001-07-04T12:08:57.235", p, "+1SECOND");
    assertMath("2001-07-04T12:09:56.235", p, "+1MINUTE");
    assertMath("2001-07-04T13:08:56.235", p, "+1HOUR");
    assertMath("2001-07-05T12:08:56.235", p, "+1DAY");
    assertMath("2001-08-04T12:08:56.235", p, "+1MONTH");
    assertMath("2002-07-04T12:08:56.235", p, "+1YEAR");


    // simple subtraction
    assertMath("2001-07-04T12:08:56.234", p, "-1MILLISECOND");
    assertMath("2001-07-04T12:08:55.235", p, "-1SECOND");
    assertMath("2001-07-04T12:07:56.235", p, "-1MINUTE");
    assertMath("2001-07-04T11:08:56.235", p, "-1HOUR");
    assertMath("2001-07-03T12:08:56.235", p, "-1DAY");
    assertMath("2001-06-04T12:08:56.235", p, "-1MONTH");
    assertMath("2000-07-04T12:08:56.235", p, "-1YEAR");


    // simple '+/-'
    assertMath("2001-07-04T12:08:56.235", p, "+1MILLISECOND-1MILLISECOND");
    assertMath("2001-07-04T12:08:56.235", p, "+1SECOND-1SECOND");
    assertMath("2001-07-04T12:08:56.235", p, "+1MINUTE-1MINUTE");
    assertMath("2001-07-04T12:08:56.235", p, "+1HOUR-1HOUR");
    assertMath("2001-07-04T12:08:56.235", p, "+1DAY-1DAY");
    assertMath("2001-07-04T12:08:56.235", p, "+1MONTH-1MONTH");
    assertMath("2001-07-04T12:08:56.235", p, "+1YEAR-1YEAR");


    // simple '-/+'
    assertMath("2001-07-04T12:08:56.235", p, "-1MILLISECOND+1MILLISECOND");
    assertMath("2001-07-04T12:08:56.235", p, "-1SECOND+1SECOND");
    assertMath("2001-07-04T12:08:56.235", p, "-1MINUTE+1MINUTE");
    assertMath("2001-07-04T12:08:56.235", p, "-1HOUR+1HOUR");
    assertMath("2001-07-04T12:08:56.235", p, "-1DAY+1DAY");
    assertMath("2001-07-04T12:08:56.235", p, "-1MONTH+1MONTH");
    assertMath("2001-07-04T12:08:56.235", p, "-1YEAR+1YEAR");


    // more complex stuff
    assertMath("2000-07-04T12:08:56.236", p, "+1MILLISECOND-1YEAR");
    assertMath("2000-07-04T12:08:57.235", p, "+1SECOND-1YEAR");
    assertMath("2000-07-04T12:09:56.235", p, "+1MINUTE-1YEAR");
    assertMath("2000-07-04T13:08:56.235", p, "+1HOUR-1YEAR");
    assertMath("2000-07-05T12:08:56.235", p, "+1DAY-1YEAR");
    assertMath("2000-08-04T12:08:56.235", p, "+1MONTH-1YEAR");
    assertMath("2000-07-04T12:08:56.236", p, "-1YEAR+1MILLISECOND");
    assertMath("2000-07-04T12:08:57.235", p, "-1YEAR+1SECOND");
    assertMath("2000-07-04T12:09:56.235", p, "-1YEAR+1MINUTE");
    assertMath("2000-07-04T13:08:56.235", p, "-1YEAR+1HOUR");
    assertMath("2000-07-05T12:08:56.235", p, "-1YEAR+1DAY");
    assertMath("2000-08-04T12:08:56.235", p, "-1YEAR+1MONTH");
    assertMath("2000-07-01T00:00:00.000", p, "-1YEAR+1MILLISECOND/MONTH");
    assertMath("2000-07-04T00:00:00.000", p, "-1YEAR+1SECOND/DAY");
    assertMath("2000-07-04T00:00:00.000", p, "-1YEAR+1MINUTE/DAY");
    assertMath("2000-07-04T13:00:00.000", p, "-1YEAR+1HOUR/HOUR");
    assertMath("2000-07-05T12:08:56.000", p, "-1YEAR+1DAY/SECOND");
    assertMath("2000-08-04T12:08:56.000", p, "-1YEAR+1MONTH/SECOND");


    // "tricky" cases
    p.setNow(parser.parse("2006-01-31T17:09:59.999"));
    assertMath("2006-02-28T17:09:59.999", p, "+1MONTH");
    assertMath("2008-02-29T17:09:59.999", p, "+25MONTH");
    assertMath("2006-02-01T00:00:00.000", p, "/MONTH+35DAYS/MONTH");
    assertMath("2006-01-31T17:10:00.000", p, "+3MILLIS/MINUTE");

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Examples of org.apache.solr.util.DateMathParser

    
  }
  
  public void testParseMathExceptions() throws Exception {
    
    DateMathParser p = new DateMathParser(UTC, Locale.US);
    p.setNow(parser.parse("2001-07-04T12:08:56.235"));
    
    Map<String,Integer> badCommands = new HashMap<String,Integer>();
    badCommands.put("/", 1);
    badCommands.put("+", 1);
    badCommands.put("-", 1);
    badCommands.put("/BOB", 1);
    badCommands.put("+SECOND", 1);
    badCommands.put("-2MILLI/", 4);
    badCommands.put(" +BOB", 0);
    badCommands.put("+2SECONDS ", 3);
    badCommands.put("/4", 1);
    badCommands.put("?SECONDS", 0);


    for (String command : badCommands.keySet()) {
      try {
        Date out = p.parseMath(command);
        fail("Didn't generate ParseException for: " + command);
      } catch (ParseException e) {
        assertEquals("Wrong pos for: " + command + " => " + e.getMessage(),
                     badCommands.get(command).intValue(), e.getErrorOffset());

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Examples of org.elasticsearch.common.joda.DateMathParser

        Object from = null;
        Object to = null;
        boolean includeLower = true;
        boolean includeUpper = true;
        DateTimeZone timeZone = null;
        DateMathParser forcedDateParser = null;
        float boost = 1.0f;
        String queryName = null;


        String currentFieldName = null;
        while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
            if (token == XContentParser.Token.FIELD_NAME) {
                currentFieldName = parser.currentName();
            } else {
                if ("from".equals(currentFieldName)) {
                    from = parser.objectBytes();
                } else if ("to".equals(currentFieldName)) {
                    to = parser.objectBytes();
                } else if ("include_lower".equals(currentFieldName) || "includeLower".equals(currentFieldName)) {
                    includeLower = parser.booleanValue();
                } else if ("include_upper".equals(currentFieldName) || "includeUpper".equals(currentFieldName)) {
                    includeUpper = parser.booleanValue();
                } else if ("boost".equals(currentFieldName)) {
                    boost = parser.floatValue();
                } else if ("gt".equals(currentFieldName)) {
                    from = parser.objectBytes();
                    includeLower = false;
                } else if ("gte".equals(currentFieldName) || "ge".equals(currentFieldName)) {
                    from = parser.objectBytes();
                    includeLower = true;
                } else if ("lt".equals(currentFieldName)) {
                    to = parser.objectBytes();
                    includeUpper = false;
                } else if ("lte".equals(currentFieldName) || "le".equals(currentFieldName)) {
                    to = parser.objectBytes();
                    includeUpper = true;
                } else if ("time_zone".equals(currentFieldName) || "timeZone".equals(currentFieldName)) {
                    timeZone = DateMathParser.parseZone(parser.text());
                } else if ("_name".equals(currentFieldName)) {
                    queryName = parser.text();
                } else if ("format".equals(currentFieldName)) {
                    forcedDateParser = new DateMathParser(Joda.forPattern(parser.text()), DateFieldMapper.Defaults.TIME_UNIT);
                } else {
                    throw new QueryParsingException(parseContext.index(), "[range] query does not support [" + currentFieldName + "]");
                }
            }
        }

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