org.drip.quant.common

Class StringUtil

java.lang.Object

org.drip.quant.common.StringUtil

public class StringUtil
extends java.lang.Object

StringUtil implements string utility functions. It exports the following functions: - Decompose + Transform string arrays into appropriate target type set/array/list, and vice versa - General-purpose String processor functions, such as GUID generator, splitter, type converter and input checker

Author:

Lakshmi Krishnamurthy

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	NULL_SER_STRING Null serialized string
static double	VERSION Serialization Version - ALWAYS prepend this on all derived classes

Constructor Summary

Constructors

Constructor and Description
StringUtil()

Method Summary

Modifier and Type	Method and Description
static boolean	BooleanListFromString(java.util.List<java.lang.Boolean> lsb, java.lang.String strList, java.lang.String strDelim) Create a list of booleans from a delimited string
static java.lang.String	GUID() Generate a GUID string
static boolean	IntegerListFromString(java.util.List<java.lang.Integer> lsi, java.lang.String strList, java.lang.String strDelim) Create a list of integers from a delimited string
static boolean	IsEmpty(java.lang.String str) Indicate if the Input String is Empty
static boolean	KeyValueListFromStringArray(java.util.List<java.lang.Double> lsdblKey, java.util.List<java.lang.Double> lsdblValue, java.lang.String strArray, java.lang.String strRecordDelim, java.lang.String strKVDelim) Split the string array into pairs of key-value doubles and returns them
static double[]	MakeDoubleArrayFromStringTokenizer(java.util.StringTokenizer stdbl) Make an array of double from a string tokenizer
static int[]	MakeIntegerArrayFromStringTokenizer(java.util.StringTokenizer st) Make an array of Integers from a string tokenizer
static java.lang.String	MakeStringArg(java.lang.String strArg) Format the given string parameter into an argument
static boolean	MatchInStringArray(java.lang.String[] astrFieldToMatch, java.lang.String[] astrMatchSet, boolean bCaseMatch) Look for a match of the field in the field set to an entry in the input array
static boolean	MatchInStringArray(java.lang.String strFieldToMatch, java.lang.String[] astrMatchSet, boolean bCaseMatch) Look for a match of the field in the input array
static boolean	ParseFromUnitaryString(java.lang.String strUnitaryBoolean) Check if the string represents an unitary boolean
static java.lang.String	ProcessInputForNULL(java.lang.String strIn, boolean bEmptyToNULL) Check the Input String to Check for NULL - and return it
static java.lang.String[]	Split(java.lang.String strPhrase, java.lang.String strDelim) Parse and Split the Input Phrase into a String Array using the specified Delimiter
static java.lang.String	StringArrayToString(java.lang.String[] astr, java.lang.String strRecordDelimiter, java.lang.String strNULL) Convert the String Array to a Record Delimited String
static boolean	StringMatch(java.lang.String strLeft, java.lang.String strRight) Indicate it the pair of Strings Match each other in Value

Methods inherited from class java.lang.Object

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

Field Detail

NULL_SER_STRING

public static final java.lang.String NULL_SER_STRING

Null serialized string

See Also:

Constant Field Values

VERSION

public static final double VERSION

Serialization Version - ALWAYS prepend this on all derived classes

See Also:

Constant Field Values

Constructor Detail

StringUtil

public StringUtil()

Method Detail

MatchInStringArray

public static final boolean MatchInStringArray(java.lang.String strFieldToMatch,
                                               java.lang.String[] astrMatchSet,
                                               boolean bCaseMatch)

Look for a match of the field in the input array

Parameters:

strFieldToMatch - Field To Match

astrMatchSet - Array of fields to compare with

bCaseMatch - TRUE - Match case

Returns:

TRUE - Match found according to the criteria specified

MatchInStringArray

public static final boolean MatchInStringArray(java.lang.String[] astrFieldToMatch,
                                               java.lang.String[] astrMatchSet,
                                               boolean bCaseMatch)

Look for a match of the field in the field set to an entry in the input array

Parameters:

astrFieldToMatch - Field Array To Match

astrMatchSet - Array of fields to compare with

bCaseMatch - TRUE - Match case

Returns:

TRUE - Match found according to the criteria specified

MakeStringArg

public static final java.lang.String MakeStringArg(java.lang.String strArg)

Format the given string parameter into an argument

Parameters:

strArg - String Argument

Returns:

Parameter from the Argument

ProcessInputForNULL

public static final java.lang.String ProcessInputForNULL(java.lang.String strIn,
                                                         boolean bEmptyToNULL)

Check the Input String to Check for NULL - and return it

Parameters:

strIn - Input String

bEmptyToNULL - TRUE if Empty String needs to be converted to NULL

Returns:

The Processed String

Split

public static final java.lang.String[] Split(java.lang.String strPhrase,
                                             java.lang.String strDelim)

Parse and Split the Input Phrase into a String Array using the specified Delimiter

Parameters:

strPhrase - Input Phrase

strDelim - Delimiter

Returns:

Array of Sub-Strings

ParseFromUnitaryString

public static final boolean ParseFromUnitaryString(java.lang.String strUnitaryBoolean)

Check if the string represents an unitary boolean

Parameters:

strUnitaryBoolean - String input

Returns:

TRUE - Unitary Boolean

MakeIntegerArrayFromStringTokenizer

public static final int[] MakeIntegerArrayFromStringTokenizer(java.util.StringTokenizer st)

Make an array of Integers from a string tokenizer

Parameters:

st - Tokenizer containing delimited doubles

Returns:

Double array

MakeDoubleArrayFromStringTokenizer

public static final double[] MakeDoubleArrayFromStringTokenizer(java.util.StringTokenizer stdbl)

Make an array of double from a string tokenizer

Parameters:

stdbl - Tokenizer containing delimited doubles

Returns:

Double array

GUID

public static final java.lang.String GUID()

Generate a GUID string

Returns:

String representing the GUID

KeyValueListFromStringArray

public static final boolean KeyValueListFromStringArray(java.util.List<java.lang.Double> lsdblKey,
                                                        java.util.List<java.lang.Double> lsdblValue,
                                                        java.lang.String strArray,
                                                        java.lang.String strRecordDelim,
                                                        java.lang.String strKVDelim)

Split the string array into pairs of key-value doubles and returns them

Parameters:

lsdblKey - [out] List of Keys

lsdblValue - [out] List of Values

strArray - [in] String containing KV records

strRecordDelim - [in] Record Delimiter

strKVDelim - [in] Key-Value Delimiter

Returns:

True if parsing is successful

IntegerListFromString

public static final boolean IntegerListFromString(java.util.List<java.lang.Integer> lsi,
                                                  java.lang.String strList,
                                                  java.lang.String strDelim)

Create a list of integers from a delimited string

Parameters:

lsi - [Output] List of Integers

strList - Delimited String input

strDelim - Delimiter

Returns:

True if successful

BooleanListFromString

public static final boolean BooleanListFromString(java.util.List<java.lang.Boolean> lsb,
                                                  java.lang.String strList,
                                                  java.lang.String strDelim)

Create a list of booleans from a delimited string

Parameters:

lsb - [Output] List of Booleans

strList - Delimited String input

strDelim - Delimiter

Returns:

True if successful

StringArrayToString

public static final java.lang.String StringArrayToString(java.lang.String[] astr,
                                                         java.lang.String strRecordDelimiter,
                                                         java.lang.String strNULL)

Convert the String Array to a Record Delimited String

Parameters:

astr - Input String Array

strRecordDelimiter - The String Record Delimiter

strNULL - NULL String Indicator

Returns:

The Record Delimited String Array

IsEmpty

public static final boolean IsEmpty(java.lang.String str)

Indicate if the Input String is Empty

Parameters:

str - The Input String

Returns:

TRUE - The Input String is Empty

StringMatch

public static final boolean StringMatch(java.lang.String strLeft,
                                        java.lang.String strRight)

Indicate it the pair of Strings Match each other in Value

Parameters:

strLeft - The Left String

strRight - The Right String

Returns:

TRUE - The Strings Match