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# CachedDateFormat Class Reference

Inherits DateFormat.

List of all members.

## Public Types
enum | { NO_MILLISECONDS = -2, UNRECOGNIZED_MILLISECONDS = -1 }
## Public Member Functions
| CachedDateFormat (const log4cxx::helpers::DateFormatPtr &dateFormat, int expiration)
| Creates a new CachedDateFormat object.
virtual void | format (LogString &sbuf, log4cxx_time_t date, log4cxx::helpers::Pool &p) const
| Formats a Date into a date/time string.
virtual void | setTimeZone (const log4cxx::helpers::TimeZonePtr &zone)
| Set timezone.
virtual void | numberFormat (LogString &s, int n, log4cxx::helpers::Pool &p) const
| Format an integer consistent with the format method.
## Static Public Member Functions
static int | findMillisecondStart (log4cxx_time_t time, const LogString &formatted, const log4cxx::helpers::DateFormatPtr &formatter, log4cxx::helpers::Pool &pool)
| Finds start of millisecond field in formatted time.
static int | getMaximumCacheValidity (const LogString &pattern)
| Gets maximum cache validity for the specified SimpleDateTime conversion pattern.

## Member Enumeration Documentation

anonymous enum

  | Enumerator:
  NO_MILLISECONDS |
  UNRECOGNIZED_MILLISECONDS |

## Constructor & Destructor Documentation

CachedDateFormat | ( | const log4cxx::helpers::DateFormatPtr & | dateFormat,
|  | int | expiration
| ) |

  | Creates a new CachedDateFormat object. Parameters:
  | dateFormat | Date format, may not be null.
  | expiration | maximum cached range in microseconds. If the dateFormat is known to be incompatible with the caching algorithm, use a value of 0 to totally disable caching or 1 to only use cache for duplicate requests.

## Member Function Documentation

static int findMillisecondStart | ( | log4cxx_time_t | time,
|  | const LogString & | formatted,
|  | const log4cxx::helpers::DateFormatPtr & | formatter,
|  | log4cxx::helpers::Pool & | pool
| ) | `[static]`

  | Finds start of millisecond field in formatted time. Parameters:
  | time | long time, must be integral number of seconds
  | formatted | String corresponding formatted string
  | formatter | DateFormat date format
  | pool | pool.
Returns: int position in string of first digit of milliseconds, -1 indicates no millisecond field, -2 indicates unrecognized field (likely RelativeTimeDateFormat)

virtual void format | ( | LogString & | sbuf,
|  | log4cxx_time_t | date,
|  | log4cxx::helpers::Pool & | p
| ) | const`[virtual]`

  | Formats a Date into a date/time string. Parameters:
  | date | the date to format.
  | sbuf | the string buffer to write to.
  | p | memory pool.
Implements DateFormat.

static int getMaximumCacheValidity | ( | const LogString & | pattern | ) | `[static]`

  | Gets maximum cache validity for the specified SimpleDateTime conversion pattern. Parameters:
  | pattern | conversion pattern, may not be null.
Returns: Duration in microseconds from an integral second that the cache will return consistent results.

virtual void numberFormat | ( | LogString & | s,
|  | int | n,
|  | log4cxx::helpers::Pool & | p
| ) | const`[virtual]`

  | Format an integer consistent with the format method. Parameters:
  | s | string to which the numeric string is appended.
  | n | integer value.
  | p | memory pool used during formatting.
Reimplemented from DateFormat.

virtual void setTimeZone | ( | const log4cxx::helpers::TimeZonePtr & | zone | ) | `[virtual]`

  | Set timezone. Remarks: Setting the timezone using getCalendar().setTimeZone() will likely cause caching to misbehave. Parameters:
  | zone | TimeZone new timezone

The documentation for this class was generated from the following file:

- cacheddateformat.h