org.springframework.util.exec

Class Execute

java.lang.Object

org.springframework.util.exec.Execute

public class Execute
extends Object

Runs an external program. Derived from ant exec task. All the 'backward compat with jdk1.1, 1.2' removed. Since jdk1.3 supports working dir, no need for scripts. All ant-specific code has been removed as well, this is a completely independent component.

Author:

[email protected], Costin Leau

Field Summary

Fields

Modifier and Type	Field and Description
static int	INVALID Invalid exit code.

Constructor Summary

Constructors

Constructor and Description
Execute() Creates a new execute object using PumpStreamHandler for stream handling.
Execute(ExecuteStreamHandler streamHandler) Creates a new execute object.
Execute(ExecuteStreamHandler streamHandler, ExecuteWatchdog watchdog) Creates a new execute object.

Method Summary

Methods

Modifier and Type	Method and Description
int	execute() Runs a process defined by the command line and returns its exit status.
static int	execute(Vector<String> envVars, String cmd, File baseDir)
static int	execute(Vector<String> envVars, Vector<String> cmd, File baseDir)
static int	execute(Vector<String> envVars, Vector<String> cmd, File baseDir, int timeToWait) Wrapper for common execution patterns
String[]	getCommandline() Returns the commandline used to create a subprocess.
String	getCommandLineString()
String[]	getEnvironment() Returns the environment used to create a subprocess.
int	getExitValue() query the exit value of the process.
static Vector<String>	getProcEnvironment() Find the list of environment variables for this process.
void	kill()
void	setCommandline(String[] commandline) Sets the commandline of the subprocess to launch.
void	setEnvironment(String[] env) Sets the environment variables for the subprocess to launch.
protected void	setExitValue(int value)
void	setNewenvironment(boolean newenv) Set whether to propagate the default environment or not.
void	setWorkingDirectory(File wd) Sets the working directory of the process to execute.
protected void	waitFor(Process process)

Methods inherited from class java.lang.Object

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

Field Detail

INVALID

public static final int INVALID

Invalid exit code.

See Also:

Constant Field Values

Constructor Detail

Execute

public Execute()

Creates a new execute object using PumpStreamHandler for stream handling.

Execute

public Execute(ExecuteStreamHandler streamHandler)

Creates a new execute object.

Parameters:

streamHandler - the stream handler used to handle the input and output streams of the subprocess.

Execute

public Execute(ExecuteStreamHandler streamHandler,
       ExecuteWatchdog watchdog)

Creates a new execute object.

Parameters:

streamHandler - the stream handler used to handle the input and output streams of the subprocess.

watchdog - a watchdog for the subprocess or null to to disable a timeout for the subprocess.

Method Detail

getProcEnvironment

public static Vector<String> getProcEnvironment()

Find the list of environment variables for this process.

Returns:

The environment.

getCommandline

public String[] getCommandline()

Returns the commandline used to create a subprocess.

Returns:

the commandline used to create a subprocess

getCommandLineString

public String getCommandLineString()

setCommandline

public void setCommandline(String[] commandline)

Sets the commandline of the subprocess to launch.

Parameters:

commandline - the commandline of the subprocess to launch

setNewenvironment

public void setNewenvironment(boolean newenv)

Set whether to propagate the default environment or not.

Parameters:

newenv - whether to propagate the process environment.

getEnvironment

public String[] getEnvironment()

Returns the environment used to create a subprocess.

Returns:

the environment used to create a subprocess

setEnvironment

public void setEnvironment(String[] env)

Sets the environment variables for the subprocess to launch.

Parameters:

env - array of Strings, each element of which has an environment variable settings in format key=value

setWorkingDirectory

public void setWorkingDirectory(File wd)

Sets the working directory of the process to execute.

This is emulated using the antRun scripts unless the OS is Windows NT in which case a cmd.exe is spawned, or MRJ and setting user.dir works, or JDK 1.3 and there is official support in java.lang.Runtime.

Parameters:

wd - the working directory of the process.

execute

public int execute()
            throws Exception

Runs a process defined by the command line and returns its exit status.

Returns:

the exit status of the subprocess or INVALID

Throws:

Exception - if launching of the subprocess failed

kill

public void kill()

waitFor

protected void waitFor(Process process)

setExitValue

protected void setExitValue(int value)

getExitValue

public int getExitValue()

query the exit value of the process.

Returns:

the exit value, 1 if the process was killed, or Project.INVALID if no exit value has been received

execute

public static int execute(Vector<String> envVars,
          String cmd,
          File baseDir)

execute

public static int execute(Vector<String> envVars,
          Vector<String> cmd,
          File baseDir)

execute

public static int execute(Vector<String> envVars,
          Vector<String> cmd,
          File baseDir,
          int timeToWait)

Wrapper for common execution patterns

Parameters:

envVars - Environment variables to execute with (optional)

cmd - a vector of the commands to execute

baseDir - the base directory to run from (optional)

timeToWait - milliseconds to wait for completion

Returns:

The result.