dap4.dap4lib.netcdf

Class NetcdfLoader

java.lang.Object

dap4.dap4lib.netcdf.NetcdfLoader

public abstract class NetcdfLoader
extends Object

Load the netcdf library via JNA; Singleton class This code should closely match that in ucar.nc2.jni.netcdf.Nc4Iosp.java.

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	DEBUG
static int	DEFAULT_LOG_LEVEL
static String	DFLAG_JNAPATH
static String	DFLAG_LOG_LEVEL
static String	ENV_JNAPATH
protected static String	jnaPath
protected static String	libName
protected static DapNetcdf	nc4

Constructor Summary

Constructors

Constructor and Description
NetcdfLoader()

Method Summary

Modifier and Type	Method and Description
static boolean	isClibraryPresent() Test if the netcdf C library is present and loaded
static DapNetcdf	load()
protected static String	nullify(String s) Convert a zero-length string to null
static void	setLibraryAndPath(String jna_path, String lib_name) set the path and name of the netcdf c library.
static int	setLogLevel(int level) Set the log level for loaded library Do nothing if set_log_level is not available

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG

public static final boolean DEBUG

See Also:

Constant Field Values

DFLAG_JNAPATH

public static final String DFLAG_JNAPATH

See Also:

Constant Field Values

DFLAG_LOG_LEVEL

public static final String DFLAG_LOG_LEVEL

See Also:

Constant Field Values

ENV_JNAPATH

public static final String ENV_JNAPATH

See Also:

Constant Field Values

DEFAULT_LOG_LEVEL

public static final int DEFAULT_LOG_LEVEL

See Also:

Constant Field Values

nc4

protected static DapNetcdf nc4

jnaPath

protected static String jnaPath

libName

protected static String libName

Constructor Detail

NetcdfLoader

public NetcdfLoader()

Method Detail

setLibraryAndPath

public static void setLibraryAndPath(String jna_path,
                                     String lib_name)

set the path and name of the netcdf c library. must be called before load() is called.

Parameters:

jna_path - path to shared libraries

lib_name - library name

Throws:

IllegalArgumentException

load

public static DapNetcdf load()
                      throws IOException

Throws:

IOException

isClibraryPresent

public static boolean isClibraryPresent()

Test if the netcdf C library is present and loaded

Returns:

true if present

setLogLevel

public static int setLogLevel(int level)

Set the log level for loaded library Do nothing if set_log_level is not available

nullify

protected static String nullify(String s)

Convert a zero-length string to null

Parameters:

s - the string to check for length

Returns:

null if s.length() == 0, s otherwise