ExecuteOn (Apache Ant API)
Date: 2012-02-26

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

    java.lang.Object
      org.apache.tools.ant.ProjectComponent
          org.apache.tools.ant.Task
              org.apache.tools.ant.taskdefs.ExecTask
                  org.apache.tools.ant.taskdefs.ExecuteOn

All Implemented Interfaces:
  java.lang.Cloneable

Direct Known Subclasses:
  AbstractAccessTask, Attrib, Chmod, Transform

    public class ExecuteOn

extends ExecTask

Executes a given command, supplying a set of files as arguments.

Since:
  Ant 1.2

Nested Class Summary
`static class` | `ExecuteOn.FileDirBoth` Enumerated attribute with the values "file", "dir" and "both" for the type attribute.

Field Summary
`protected java.io.File` | `destDir`
`protected java.util.Vector` | `filesets`
`protected FileNameMapper` | `mapper`
`protected Mapper` | `mapperElement`
`protected Commandline.Marker` | `srcFilePos`
`protected boolean` | `srcIsFirst` Has <srcfile> been specified before <targetfile>
`protected Commandline.Marker` | `targetFilePos`
`protected java.lang.String` | `type`

Fields inherited from class org.apache.tools.ant.taskdefs.ExecTask
`cmdl, failOnError, newEnvironment, redirector, redirectorElement`

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
`ExecuteOn()`

Method Summary
`void` | `add(FileNameMapper fileNameMapper)` Add a nested FileNameMapper.
`void` | `add(ResourceCollection rc)` Add a collection of resources upon which to operate.
`void` | `addDirset(DirSet set)` Add a set of directories upon which to operate.
`void` | `addFilelist(FileList list)` Add a list of source files upon which to operate.
`void` | `addFileset(FileSet set)` Add a set of files upon which to operate.
`protected void` | `checkConfiguration()` Check the configuration of this ExecuteOn instance.
`protected ExecuteStreamHandler` | `createHandler()` Create the ExecuteStreamHandler instance that will be used during execution.
`Mapper` | `createMapper()` Create a nested Mapper element to use for mapping source files to target files.
`Commandline.Marker` | `createSrcfile()` Create a placeholder indicating where on the command line the name of the source file should be inserted.
`Commandline.Marker` | `createTargetfile()` Create a placeholder indicating where on the command line the name of the target file should be inserted.
`protected java.lang.String[]` | `getCommandline(java.lang.String[] srcFiles, java.io.File[] baseDirs)` Construct the command line for parallel execution.
`protected java.lang.String[]` | `getCommandline(java.lang.String srcFile, java.io.File baseDir)` Construct the command line for serial execution.
`protected java.lang.String[]` | `getDirs(java.io.File baseDir, DirectoryScanner ds)` Return the list of Directories from this DirectoryScanner that should be included on the command line.
`protected java.lang.String[]` | `getFiles(java.io.File baseDir, DirectoryScanner ds)` Return the list of files from this DirectoryScanner that should be included on the command line.
`protected java.lang.String[]` | `getFilesAndDirs(FileList list)` Return the list of files or directories from this FileList that should be included on the command line.
`protected void` | `runExec(Execute exe)` Run the specified Execute object.
`protected void` | `runParallel(Execute exe, java.util.Vector fileNames, java.util.Vector baseDirs)` Run the command in "parallel" mode, making sure that at most maxParallel sourcefiles get passed on the command line.
`void` | `setAddsourcefile(boolean b)` Set whether to send the source file name on the command line.
`void` | `setDest(java.io.File destDir)` Specify the directory where target files are to be placed.
`void` | `setForce(boolean b)` Set whether to bypass timestamp comparisons for target files.
`void` | `setForwardslash(boolean forwardSlash)` Set whether the source and target file names on Windows and OS/2 must use the forward slash as file separator.
`void` | `setIgnoremissing(boolean b)` Set whether to ignore nonexistent files from filelists.
`void` | `setMaxParallel(int max)` Limit the command line length by passing at maximum this many sourcefiles at once to the command.
`void` | `setParallel(boolean parallel)` Set whether to execute in parallel mode.
`void` | `setRelative(boolean relative)` Set whether the filenames should be passed on the command line as absolute or relative pathnames.
`void` | `setSkipEmptyFilesets(boolean skip)` Set whether empty filesets will be skipped.
`void` | `setType(ExecuteOn.FileDirBoth type)` Set whether the command works only on files, directories or both.
`protected void` | `setupRedirector()` Set up the I/O Redirector.
`void` | `setVerbose(boolean b)` Set whether to operate in verbose mode.

Methods inherited from class org.apache.tools.ant.taskdefs.ExecTask
`addConfiguredRedirector, addEnv, createArg, createWatchdog, execute, getOs, getOsFamily, getResolveExecutable, isValidOs, logFlush, maybeSetResultPropertyValue, prepareExec, resolveExecutable, runExecute, setAppend, setCommand, setDir, setError, setErrorProperty, setExecutable, setFailIfExecutionFails, setFailonerror, setInput, setInputString, setLogError, setNewenvironment, setOs, setOsFamily, setOutput, setOutputproperty, setResolveExecutable, setResultProperty, setSearchPath, setSpawn, setTimeout, setTimeout, setVMLauncher`

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

### filesets

    protected java.util.Vector filesets

### type

    protected java.lang.String type

### srcFilePos

    protected Commandline.Marker srcFilePos

### targetFilePos

    protected Commandline.Marker targetFilePos

### mapperElement

    protected Mapper mapperElement

### mapper

    protected FileNameMapper mapper

### destDir

    protected java.io.File destDir

### srcIsFirst

    protected boolean srcIsFirst

  Has <srcfile> been specified before <targetfile>

Constructor Detail

### ExecuteOn

    public ExecuteOn()

Method Detail

### addFileset

    public void addFileset(FileSet set)

  Add a set of files upon which to operate.

  Parameters:
    `set` - the FileSet to add.

### addDirset

    public void addDirset(DirSet set)

  Add a set of directories upon which to operate.

  Parameters:
    `set` - the DirSet to add.
  Since:
    Ant 1.6

### addFilelist

    public void addFilelist(FileList list)

  Add a list of source files upon which to operate.

  Parameters:
    `list` - the FileList to add.

### add

    public void add(ResourceCollection rc)

  Add a collection of resources upon which to operate.

  Parameters:
    `rc` - resource collection to add.
  Since:
    Ant 1.7

### setRelative

    public void setRelative(boolean relative)

  Set whether the filenames should be passed on the command line as absolute or relative pathnames. Paths are relative to the base directory of the corresponding fileset for source files or the dest attribute for target files.

  Parameters:
    `relative` - whether to pass relative pathnames.

### setParallel

    public void setParallel(boolean parallel)

  Set whether to execute in parallel mode. If true, run the command only once, appending all files as arguments. If false, command will be executed once for every file. Defaults to false.

  Parameters:
    `parallel` - whether to run in parallel.

### setType

    public void setType(ExecuteOn.FileDirBoth type)

  Set whether the command works only on files, directories or both.

  Parameters:
    `type` - a FileDirBoth EnumeratedAttribute.

### setSkipEmptyFilesets

    public void setSkipEmptyFilesets(boolean skip)

  Set whether empty filesets will be skipped. If true and no source files have been found or are newer than their corresponding target files, the command will not be run.

  Parameters:
    `skip` - whether to skip empty filesets.

### setDest

    public void setDest(java.io.File destDir)

  Specify the directory where target files are to be placed.

  Parameters:
    `destDir` - the File object representing the destination directory.

### setForwardslash

    public void setForwardslash(boolean forwardSlash)

  Set whether the source and target file names on Windows and OS/2 must use the forward slash as file separator.

  Parameters:
    `forwardSlash` - whether the forward slash will be forced.

### setMaxParallel

    public void setMaxParallel(int max)

  Limit the command line length by passing at maximum this many sourcefiles at once to the command.

  Set to <= 0 for unlimited - this is the default.

  Parameters:
    `max` - `int` maximum number of sourcefiles passed to the executable.
  Since:
    Ant 1.6

### setAddsourcefile

    public void setAddsourcefile(boolean b)

  Set whether to send the source file name on the command line.

  Defaults to `true`.

  Parameters:
    `b` - whether to add the source file to the command line.
  Since:
    Ant 1.6

### setVerbose

    public void setVerbose(boolean b)

  Set whether to operate in verbose mode. If true, a verbose summary will be printed after execution.

  Parameters:
    `b` - whether to operate in verbose mode.
  Since:
    Ant 1.6

### setIgnoremissing

    public void setIgnoremissing(boolean b)

  Set whether to ignore nonexistent files from filelists.

  Parameters:
    `b` - whether to ignore missing files.
  Since:
    Ant 1.6.2

### setForce

    public void setForce(boolean b)

  Set whether to bypass timestamp comparisons for target files.

  Parameters:
    `b` - whether to bypass timestamp comparisons.
  Since:
    Ant 1.6.3

### createSrcfile

    public Commandline.Marker createSrcfile()

  Create a placeholder indicating where on the command line the name of the source file should be inserted.

  Returns:
    `Commandline.Marker`.

### createTargetfile

    public Commandline.Marker createTargetfile()

  Create a placeholder indicating where on the command line the name of the target file should be inserted.

  Returns:
    `Commandline.Marker`.

### createMapper

    public Mapper createMapper()
                        throws BuildException

  Create a nested Mapper element to use for mapping source files to target files.

  Returns:
    `Mapper`.
  Throws:
    `BuildException` - if more than one mapper is defined.

### add

    public void add(FileNameMapper fileNameMapper)

  Add a nested FileNameMapper.

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

### checkConfiguration

    protected void checkConfiguration()

  Check the configuration of this ExecuteOn instance.

  Overrides:
    `checkConfiguration` in class `ExecTask`

### createHandler

    protected ExecuteStreamHandler createHandler()
                                          throws BuildException

  Create the ExecuteStreamHandler instance that will be used during execution.

  Overrides:
    `createHandler` in class `ExecTask`
  Returns:
    `ExecuteStreamHandler`.
  Throws:
    `BuildException` - on error.

### setupRedirector

    protected void setupRedirector()

  Set up the I/O Redirector.

  Overrides:
    `setupRedirector` in class `ExecTask`

### runExec

    protected void runExec(Execute exe)
                    throws BuildException

  Run the specified Execute object.

  Overrides:
    `runExec` in class `ExecTask`
  Parameters:
    `exe` - the Execute instance representing the external process.
  Throws:
    `BuildException` - on error

### getCommandline

    protected java.lang.String[] getCommandline(java.lang.String[] srcFiles,
                                                java.io.File[] baseDirs)

  Construct the command line for parallel execution.

  Parameters:
    `srcFiles` - The filenames to add to the commandline.
    `baseDirs` - filenames are relative to this dir.
  Returns:
    the command line in the form of a String[].

### getCommandline

    protected java.lang.String[] getCommandline(java.lang.String srcFile,
                                                java.io.File baseDir)

  Construct the command line for serial execution.

  Parameters:
    `srcFile` - The filename to add to the commandline.
    `baseDir` - filename is relative to this dir.
  Returns:
    the command line in the form of a String[].

### getFiles

    protected java.lang.String[] getFiles(java.io.File baseDir,
                                          DirectoryScanner ds)

  Return the list of files from this DirectoryScanner that should be included on the command line.

  Parameters:
    `baseDir` - the File base directory.
    `ds` - the DirectoryScanner to use for file scanning.
  Returns:
    a String[] containing the filenames.

### getDirs

    protected java.lang.String[] getDirs(java.io.File baseDir,
                                         DirectoryScanner ds)

  Return the list of Directories from this DirectoryScanner that should be included on the command line.

  Parameters:
    `baseDir` - the File base directory.
    `ds` - the DirectoryScanner to use for file scanning.
  Returns:
    a String[] containing the directory names.

### getFilesAndDirs

    protected java.lang.String[] getFilesAndDirs(FileList list)

  Return the list of files or directories from this FileList that should be included on the command line.

  Parameters:
    `list` - the FileList to check.
  Returns:
    a String[] containing the directory names.
  Since:
    Ant 1.6.2

### runParallel

    protected void runParallel(Execute exe,
                               java.util.Vector fileNames,
                               java.util.Vector baseDirs)
                        throws java.io.IOException,
                               BuildException

  Run the command in "parallel" mode, making sure that at most maxParallel sourcefiles get passed on the command line.

  Parameters:
    `exe` - the Executable to use.
    `fileNames` - the Vector of filenames.
    `baseDirs` - the Vector of base directories corresponding to fileNames.
  Throws:
    `java.io.IOException` - on I/O errors.
    `BuildException` - on other errors.
  Since:
    Ant 1.6

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