Package net.aifusion.metamodel

Class ModelUtilities

java.lang.Object

net.aifusion.metamodel.ModelUtilities

public class ModelUtilities
extends Object

This class contains a number of static methods used in the metamodel package

Author:

Sharad Singhal

Method Summary

Modifier and Type	Method	Description
static byte[]	base64Decode(String s)	Decode a base64 encoded string to a byte array
static String	base64Encode(byte[] bytes)	Encode a byte array to a base64 encoded string
static String	base64Encode(byte[] bytes, int offset, int length)	Encode a byte array to a base64 encoded string
static String	escape(String str)	Escapes special characters in a string for MOF strings
static HashMap<String,String>	getArgs(String[] argv)	Get a hashmap containing {name, value} pairs passed as an argument list.
static Vector<String>	getPathElements(String localPath)	Get path elements from a local path definition.
static HashMap<String,DataValue>	getProperties(CimStructure template, Map<String,String> recordProperties)	Convert a set of {propertyName, propertyValue} pairs to DataValues
static String	getRandomString(int len)	Get a random string of ascii characters
static String	normalizePath(String localPath)	Normalize a local path to remove .
static String	quote(String inp)	Escapes special characters in a string to generate a MOF formatted string
static String	toMOFString(DataType type, Object value)	Return the string representation of a dataValue singleton
static String	unescapeString(String inp)	Removes the first level of escapes from a MOF string
static String	unquote(String value)	Removes the first level of quotes and escapes from a string

Methods inherited from class java.lang.Object

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

Method Details

quote

public static String quote(String inp)

Escapes special characters in a string to generate a MOF formatted string

Parameters:

inp - the string to process

Returns:

The string with all of the special characters escaped.

See Also:

• unquote(String)

unquote

public static String unquote(String value)

Removes the first level of quotes and escapes from a string

Parameters:

value - - the string to unquote

Returns:

the unquoted string

See Also:

• quote(String)

escape

public static String escape(String str)

Escapes special characters in a string for MOF strings

Parameters:

str - the string to process

Returns:

The string with all of the special characters escaped

See Also:

• unescapeString(String)

unescapeString

public static String unescapeString(String inp)

Removes the first level of escapes from a MOF string

Parameters:

inp - the string to unescape

Returns:

the unescaped string

See Also:

• escape(String)

toMOFString

public static String toMOFString(DataType type,
 Object value)

Return the string representation of a dataValue singleton

Parameters:

type - - data type of dataValue

value - - underlying java object containing dataValue

Returns:

- string representation

base64Encode

public static String base64Encode(byte[] bytes)

Encode a byte array to a base64 encoded string

Parameters:

bytes - - array of bytes to be encoded

Returns:

- string representation of bytes

See Also:

• base64Decode(String)

base64Encode

public static String base64Encode(byte[] bytes,
 int offset,
 int length)

Encode a byte array to a base64 encoded string

Parameters:

bytes - - array containing bytes to be encoded

offset - - offset within array where transformation starts

length - - number of bytes to be encoded

Returns:

- string containing base64 representation of the array

Throws:

ModelException - if the operation goes past either end of the array

base64Decode

public static byte[] base64Decode(String s)

Decode a base64 encoded string to a byte array

Parameters:

s - - string to be decoded

Returns:

- decoded byte array

See Also:

• base64Encode(byte[])

normalizePath

public static String normalizePath(String localPath)

Normalize a local path to remove . and .. segments.

Parameters:

localPath - - local path to be checked

Returns:

- local path with all "." and ".." segments removed. An empty local path will return "/"

getPathElements

public static Vector<String> getPathElements(String localPath)

Get path elements from a local path definition. The path is split using "/" or "\" characters. All '.' and empty segments are ignored, and all ".." segments move up the hierarchy without going past the initial level. All path elements are converted to lower case

Parameters:

localPath - - local path to be broken

Returns:

- vector containing path elements

getArgs

public static HashMap<String,String> getArgs(String[] argv)

Get a hashmap containing {name, value} pairs passed as an argument list. Each {name, value} pair is represented as [-name value] ... in the argument list. In case the value contains spaces, it can either be quoted, or be enclosed in braces. The returned Hashmap is keyed by name (sans the '-') and contains the corresponding value. Note that names are converted to lowercase, so are case insensitive

Parameters:

argv - - string array to be parsed

Returns:

- argument map

getProperties

public static HashMap<String,DataValue> getProperties(CimStructure template,
 Map<String,String> recordProperties)

Convert a set of {propertyName, propertyValue} pairs to DataValues

Parameters:

template - - CimStructure template to scan for constructing values

recordProperties - - record properties provided. Array properties should be given as "," separated string values

Returns:

map containing invalid input: '<'propertyName, DataValue>

getRandomString

public static String getRandomString(int len)

Get a random string of ascii characters

Parameters:

len - - length of string

Returns:

random string