Package org.apache.tools.ant.taskdefs

# Class Tstamp

java.lang.Object
org.apache.tools.ant.ProjectComponent
org.apache.tools.ant.Task
org.apache.tools.ant.taskdefs.Tstamp

All Implemented Interfaces:
  `Cloneable`

public class Tstamp extends Task
Sets properties to the current time, or offsets from the current time. The default properties are TSTAMP, DSTAMP and TODAY;

Since:
  Ant 1.1

- ## Nested Class Summary

  Nested Classes
  Modifier and Type
  Class
  Description
  `class`
  `Tstamp.CustomFormat`
  This nested element that allows a property to be set to the current date and time in a given format.
  `static class`
  `Tstamp.Unit`
  set of valid units to use for time offsets.

- ## Field Summary

  ### Fields inherited from class org.apache.tools.ant.Task

  `target, taskName, taskType, wrapper`

  ### Fields inherited from class org.apache.tools.ant.ProjectComponent

  `description, location, project`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `Tstamp()`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `Tstamp.CustomFormat`
  `createFormat()`
  create a custom format with the current prefix.
  `void`
  `execute()`
  create the timestamps.
  `protected Date`
  `getNow()`
  Return the `Date` instance to use as base for DSTAMP, TSTAMP and TODAY.
  `protected Optional<Date>`
  `getNow(String propertyName, Function<String,Date> map, BiFunction<String,String,String> log)`
  Checks and returns a Date if the specified property is set.
  `void`
  `setPrefix(String prefix)`
  Set a prefix for the properties.

  ### Methods inherited from class org.apache.tools.ant.Task

  `bindToOwner, getOwningTarget, getRuntimeConfigurableWrapper, getTaskName, getTaskType, getWrapper, handleErrorFlush, handleErrorOutput, handleFlush, handleInput, handleOutput, init, isInvalid, log, log, log, log, maybeConfigure, perform, reconfigure, setOwningTarget, setRuntimeConfigurableWrapper, setTaskName, setTaskType`

  ### Methods inherited from class org.apache.tools.ant.ProjectComponent

  `clone, getDescription, getLocation, getProject, setDescription, setLocation, setProject`

  ### Methods inherited from class java.lang.Object

  `equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- ## Constructor Details

  - ### Tstamp

    public Tstamp()

- ## Method Details

  - ### setPrefix

    public void setPrefix(String prefix)
    Set a prefix for the properties. If the prefix does not end with a "." one is automatically added.
    Parameters:
      `prefix` - the prefix to use.
    Since:
      Ant 1.5

  - ### execute

    public void execute() throws BuildException
    create the timestamps. Custom ones are done before the standard ones, to get their retaliation in early.
    Overrides:
      `execute` in class `Task`
    Throws:
      `BuildException` - on error.

  - ### createFormat

    public Tstamp.CustomFormat createFormat()
    create a custom format with the current prefix.
    Returns:
      a ready to fill-in format

  - ### getNow

    protected Date getNow()
    Return the `Date` instance to use as base for DSTAMP, TSTAMP and TODAY.
    Returns:
      Date

  - ### getNow

    protected Optional<Date> getNow(String propertyName, Function<String,Date> map, BiFunction<String,String,String> log)
    Checks and returns a Date if the specified property is set.
    Parameters:
      `propertyName` - name of the property to check
      `map` - conversion of the property value as string to Date
      `log` - supplier of the log message containing the property name and value if the conversion fails
    Returns:
      Optional containing the Date or null