Environment¶

public class Environment extends EnvironmentBase¶: This class provides access to the environment variables and provides facilities to specify where to load the underlying AMPL interpreter.

Fields¶

PATH¶

public static final String PATH¶

Get the platform dependent name of the path environment variable. To append a directory to current list of system paths, follow the snippet below:

Environment e = new Environment();
String paths = e.get(Environment.PATH);
e.put(Environment.PATH, paths + java.io.File.pathSeparatorChar + "/mynewpath");

Note that changing the paths in this way has effect only until the underlying AMPL process is started (in the AMPL constructor).

Constructors¶

Environment¶

public Environment()¶: Default constructor, just copies the values of the current system environment variables. Expects the AMPL binary in a directory included in the system paths list or in the default position (which is APIJARLOCATION/ampl)

Environment¶

public Environment(String binDir)¶

Permits the user to specify a custom location for the AMPL executable.

Parameters

binDir – Directory to search the AMPL executable in

Environment¶

public Environment(String binDir, String binName)¶

Permits the user to specify a custom location and name for the AMPL executable.

Parameters

binDir – Directory to search the AMPL executable in
binName – Name of the AMPL executable if other than “ampl”

Methods¶

containsKey¶

public boolean containsKey(Object key)¶

get¶

public String get(Object key)¶

getBinDir¶

public String getBinDir()¶: Returns the directory containing the overriding AMPL executable directory.

getBinName¶

public String getBinName()¶: Returns the name of the AMPL executable.

getWorkingDir¶

String getWorkingDir()¶: Returns the path to the current working directory.

isEmpty¶

public boolean isEmpty()¶

put¶

public void put(String key, String value)¶

setBinDir¶

public void setBinDir(String exePath)¶

Sets the directory in which the AMPL executable is located. Does not perform any check regarding whether the AMPL executable in there is working or not.

Parameters

exePath – Path to the AMPL executable (without file name)

setBinName¶

public void setBinName(String exeName)¶

Sets the name of the AMPL executable. Does not perform any check regarding whether the AMPL executable in there is working or not.

Parameters

exeName – Name of the AMPL executable

size¶

public int size()¶

toString¶

public String toString()¶

DataFrame

ErrorHandler