## org.apache.tools.ant.taskdefs
Class UpToDate

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

All Implemented Interfaces:
  java.lang.Cloneable, Condition

    public class UpToDate

extends Task
implements Condition

Sets the given property if the specified target has a timestamp greater than all of the source files.

Since:
  Ant 1.2

Field Summary
`protected Mapper` `mapperElement`

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
`UpToDate()`

Method Summary
`void` `add(FileNameMapper fileNameMapper)` A nested filenamemapper
`void` `addSrcfiles(FileSet fs)` Nested <srcfiles> element.
`Mapper` `createMapper()` Defines the FileNameMapper to use (nested mapper element).
`Union` `createSrcResources()` Nested resource collections as sources.
`boolean` `eval()` Evaluate (all) target and source file(s) to see if the target(s) is/are up-to-date.
`void` `execute()` Sets property to true if target file(s) have a more recent timestamp than (each of) the corresponding source file(s).
`protected boolean` `scanDir(java.io.File srcDir, java.lang.String[] files)` Scan a directory for files to check for "up to date"ness
`void` `setProperty(java.lang.String property)` The property to set if the target file is more up-to-date than (each of) the source file(s).
`void` `setSrcfile(java.io.File file)` The file that must be older than the target file if the property is to be set.
`void` `setTargetFile(java.io.File file)` The file which must be more up-to-date than (each of) the source file(s) if the property is to be set.
`void` `setValue(java.lang.String value)` The value to set the named property to if the target file is more up-to-date than (each of) the source file(s).

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`

Field Detail

### mapperElement

    protected Mapper mapperElement

Constructor Detail

### UpToDate

    public UpToDate()

Method Detail

### setProperty

    public void setProperty(java.lang.String property)

  The property to set if the target file is more up-to-date than (each of) the source file(s).

  Parameters:
    `property` - the name of the property to set if Target is up-to-date.

### setValue

    public void setValue(java.lang.String value)

  The value to set the named property to if the target file is more up-to-date than (each of) the source file(s). Defaults to 'true'.

  Parameters:
    `value` - the value to set the property to if Target is up-to-date

### setTargetFile

    public void setTargetFile(java.io.File file)

  The file which must be more up-to-date than (each of) the source file(s) if the property is to be set.

  Parameters:
    `file` - the file we are checking against.

### setSrcfile

    public void setSrcfile(java.io.File file)

  The file that must be older than the target file if the property is to be set.

  Parameters:
    `file` - the file we are checking against the target file.

### addSrcfiles

    public void addSrcfiles(FileSet fs)

  Nested <srcfiles> element.

  Parameters:
    `fs` - the source files

### createSrcResources

    public Union createSrcResources()

  Nested resource collections as sources.

  Returns:
    the source resources to configure.
  Since:
    Ant 1.7

### createMapper

    public Mapper createMapper()
                        throws BuildException

  Defines the FileNameMapper to use (nested mapper element).

  Returns:
    a mapper to be configured
  Throws:
    `BuildException` - if more than one mapper is defined

### add

    public void add(FileNameMapper fileNameMapper)

  A nested filenamemapper

  Parameters:
    `fileNameMapper` - the mapper to add
  Since:
    Ant 1.6.3

### eval

    public boolean eval()

  Evaluate (all) target and source file(s) to see if the target(s) is/are up-to-date.

  Specified by:
    `eval` in interface `Condition`
  Returns:
    true if the target(s) is/are up-to-date

### execute

    public void execute()
                 throws BuildException

  Sets property to true if target file(s) have a more recent timestamp than (each of) the corresponding source file(s).

  Overrides:
    `execute` in class `Task`
  Throws:
    `BuildException` - on error

### scanDir

    protected boolean scanDir(java.io.File srcDir,
                              java.lang.String[] files)

  Scan a directory for files to check for "up to date"ness

  Parameters:
    `srcDir` - the directory
    `files` - the files to scan for
  Returns:
    true if the files are up to date