com.espertech.esper.common.internal.util

Class StringValue

java.lang.Object

com.espertech.esper.common.internal.util.StringValue

public final class StringValue
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static String	UNNAMED

Constructor Summary

Constructors

Constructor and Description
StringValue()

Method Summary

Modifier and Type	Method and Description
protected static String	escapeDot(String identifierToEscape) Escape all unescape dot characters in the text (identifier only) passed in.
static String	parseString(String value) Parse the string literal consisting of text between double-quotes or single-quotes.
static String	removeTicks(String tickedString) Remove tick '`' character from a string start and end.
static void	renderConstantAsEPL(StringWriter writer, Object constant) Renders a constant as an EPL.
static String	stringDelimitedTo60Char(String text)
static String	unescapeBacktick(String text)
static int	unescapedIndexOfDot(String identifier) Find the index of an unescaped dot (.) character, or return -1 if none found.
static String	unescapeDot(String identifierToUnescape) Un-Escape all escaped dot characters in the text (identifier only) passed in.
static String	unnamedWhenNullOrEmpty(String value)

Methods inherited from class java.lang.Object

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

Field Detail

UNNAMED

public static final String UNNAMED

See Also:

Constant Field Values

Constructor Detail

StringValue

public StringValue()

Method Detail

parseString

public static String parseString(String value)

Parse the string literal consisting of text between double-quotes or single-quotes.

Parameters:

value - is the text wthin double or single quotes

Returns:

parsed value

unescapedIndexOfDot

public static int unescapedIndexOfDot(String identifier)

Find the index of an unescaped dot (.) character, or return -1 if none found.

Parameters:

identifier - text to find an un-escaped dot character

Returns:

index of first unescaped dot

escapeDot

protected static String escapeDot(String identifierToEscape)

Escape all unescape dot characters in the text (identifier only) passed in.

Parameters:

identifierToEscape - text to escape

Returns:

text where dots are escaped

unescapeDot

public static String unescapeDot(String identifierToUnescape)

Un-Escape all escaped dot characters in the text (identifier only) passed in.

Parameters:

identifierToUnescape - text to un-escape

Returns:

string

unescapeBacktick

public static String unescapeBacktick(String text)

renderConstantAsEPL

public static void renderConstantAsEPL(StringWriter writer,
                                       Object constant)

Renders a constant as an EPL.

Parameters:

writer - to output to

constant - to render

removeTicks

public static String removeTicks(String tickedString)

Remove tick '`' character from a string start and end.

Parameters:

tickedString - delimited string

Returns:

delimited string with ticks removed, if starting and ending with tick

stringDelimitedTo60Char

public static String stringDelimitedTo60Char(String text)

unnamedWhenNullOrEmpty

public static String unnamedWhenNullOrEmpty(String value)