DFXEngine wiki

TextFactory is a singleton class that builds strings from Text objects and contains references to various tools to use in generation. Use the build(Text) and build(Text…) methods for generation. The implementation is annotated as a @Component for the Injector module and will be automatically instantiated by it.

TextConfiguration is a configuration object that is used by all configurable classes of the module. ConfigurationKey is used to determine the type and default value of a configuration entry, and values to configuration entries may be static objects or a Supplier<T>. Configuration keys specific to a single class are contained in the class, and generic keys are in the ConfigurationKeys utility class. These generic keys are:

• ConfigurationKey<String> DELIMITER determines the delimiter used in normal concatenation. The default value is “ ” (a whitespace)
• ConfigurationKey<String> LIST_DELIMITER determines the delimiter used in list concatenation, which is when the last delimiter should be different from the other ones. The default value is “, ”
• ConfigurationKey<String> LIST_LAST_DELIMITER determines the last delimiter used in list concatenation. The default value is “ and ”
• ConfigurationKey<Handle> NUMBER_FORMATTER determines the NumberFormatter to be used when formatting numbers
• ConfigurationKey<Handle> NUMBER_SUFFIX_FORMATTER determines the NumberSuffixFormatter to be used by number formatters to separate a number to a mantissa and exponent

Text is an interface that contains a text generation method and possibly references to other objects to aid in generation. There are multiple default implementations of text:

• StaticText is the simplest text implementation. It takes in a string and returns it on generation
• ConfigurationText<T> takes in a ConfigurationKey<T> and a Function<T,String>, and returns the configuration value ran through the function on generation
• NameText<T> takes in a Supplier<T> and returns the name for the supplied object on generation. Name is resolved with TextFactory.getName(T). It has one ConfigurationKey<Boolean> called USE_PLURAL which uses the plural form of the name if true. The default value is false
• NumberText takes in a Supplier<Number> and returns the formatted version of the supplied number on generation. The number is formatted using the ConfigurationKeys.NUMBER_FORMATTER and ConfigurationKeys.NUMBER_SUFFIX_FORMATTER configuration keys
• NumeralText is the same as NumberText, but works on numerals from the Math module instead of regular numbers
• ValueText is the same as NumberText, but works on values from the Values module instead of regular numbers. It also has a ConfigurationKey<Boolean> called USE_MODIFIED, which uses the Value.getValue() method if true and the Value.getBase() method if false. The default value is true
• ChainedText takes in any amount of other text objects and chains them together using delimiters. It has one ConfigurationKey<Boolean> called USE_LIST_MODIFIER which uses ConfigurationKeys.LIST_DELIMITER and ConfigurationKeys.LIST_LAST_DELIMITER if true and ConfigurationKeys.DELIMITER if false. The default value is false

NumberFormatter is an interface that formats a BigDecimal number to a string representation. It uses a NumberSuffixFormatter to separate the number into mantissa and exponent parts when necessary. There are three default implementations of number formatter:

• SimpleNumberFormatter is the simplest number formatter. It has three configuration keys:
  • ConfigurationKey<Integer> PRECISION determines the precision of the formatted number. This is directly equivalent to MathContext.getPrecision(). The default value is 6
  • ConfigurationKey<Integer> MIN_EXPONENT determines the minimum power of ten that the number must be before a NumberSuffixFormatter is used to generate an exponential suffix for the number. This value must be smaller than or equal to PRECISION. The default value is 3
  • ConfigurationKey<Boolean> STRIP_ZEROS determines if trailing zeros after a decimal point should be stripped. The default value is true
• EvenLengthNumberFormatter works mostly in the same way as the SimpleNumberFormatter, but tries to format all numbers to take the same amount of characters. It has three configuration keys:
  • ConfigurationKey<Integer> LENGTH determines how many characters the resulting string should be in length. Values smaller than 7 are not recommended. The default value is 8
  • ConfigurationKey<Integer> MIN_EXPONENT determines the minimum power of ten that the number must be before a NumberSuffixFormatter is used to generate an exponential suffix for the number. This value must be smaller than or equal to LENGTH. The default value is 3
  • ConfigurationKey<Boolean> PAD_ZEROS determines if numbers resulting in fewer characters than LENGHT should be padded with a decimal separator (if one is not present already) and trailing zeros. The default value is true
• SplittingNumberFormatter splits a number into multiple parts. This is most useful when formatting durations of time. It has four configuration keys:
  • ConfigurationKey<Split[]> SPLITS determines how numbers are split. Every split object contains a number multiplier and a suffix in singular and plural form. The splits must be in ascending order based on the multiplier, and the first split’s multiplier is recommended to be 1. The default value is TIME_SHORT. Two preset split arrays are defined:
    • TIME_SHORT splits a number of seconds into different units of time ranging from seconds to years. Months are assumed to be 30 days in length, and years 365 days in length. The units are abbreviated as their name’s first character, except for months which are abbreviated with mo to avoid confusion with minutes
    • TIME_LONG is the same as TIME_SHORT but uses full names for the suffixes
  • ConfigurationKey<Handle> FORMATTER determines which NumberFormatter is to be used for each individual split. The default value is the handle for SimpleNumberFormatter
  • ConfigurationKey<Boolean> ROUND_SMALLEST determines if the least significant split should be rounded down to an integer value. The default value is true
  • ConfigurationKey<Boolean> USE_LIST_MODIFIER determines if ConfigurationKeys.LIST_DELIMITER and ConfigurationKeys.LIST_LAST_DELIMITER should be used instead of ConfigurationKeys.DELIMITER. The default value is true

All NumberFormatter implementations are annotated with @Component for the Injector module and will be automatically instantiated by it.

NumberSuffixFormatter is an interface that separates a BigDecimal number into a mantissa and an exponent. It is used by number formatters. There are three default implementations of number suffix formatter:

• ExponentSuffixFormatter splits a number into a mantissa and an exponent based on two configuration keys:
  • ConfigurationKey<Integer> INTERVAL determines the interval of exponents. For values larger than 1, the exponent is rounded down to the nearest multiple of the interval, and the mantissa is scaled accordingly. A value of 3 is equivalent to engineering representation. Values smaller than 1 are not allowed. The default value is 1
  • ConfigurationKey<Boolean> EXPONENT_PLUS determines if the exponent should be prefixed by a plus when it is positive. The default value is false
• CharDigitSuffixFormatter is otherwise the same as the ExponentSuffixFormatter, but instead of regular digits, it represents the exponent in an arbitrary base with any characters as digits. It has three configuration keys:
  • ConfigurationKey<char[]> CHARACTERS determines the characters to be used as digits. It defaults to ALPHABET, which contains the 26 English alphabet in lowercase
  • ConfigurationKey<Integer> INTERVAL determines the interval of exponents. It works otherwise in the same way as ExponentSuffixFormatter’s INTERVAL, but for values larger than 1 the exponent doesn’t represent powers of 10, but powers of 10^INTERVAL. For example, formatting the number 52500 with default characters and interval 1 would result in 5.25d, and with interval 3 the result would be 52.5a. The default value is 1
  • ConfigurationKey<Boolean> EXPONENT_PLUS determines if the exponent should be prefixed by a plus when it is positive. The default value is false
• NamedSuffixFormatter is otherwise the same as the CharDigitSuffixFormatter, but it uses string suffixes instead of exponents. It has three configuration keys:
  • ConfigurationKey<String[]> SUFFIXES determines the suffixes to be used. The default value is SHORT. Three preset split arrays are defined:
    • SI contains abbreviated SI unit prefixes up to Q (Quetta, 10³⁰)
    • SHORT contains abbreviated names of powers of 1000 in the short scale, up to NOg (Novenoctogintillion, 10²⁷⁰)
    • LONG contains abbreviated names of powers of 1000 in the long scale, up to QaQD (Quattuorquadragintilliard, 10²⁶⁷)
  • ConfigurationKey<Integer> INTERVAL determines the interval of exponents, in the same way as CharDigitSuffixFormatter does. The default suffixes should all use a value of 3. The default value is 3

All NumberSuffixFactory implementations are annotated with @Component for the Injector module and will be automatically instantiated by it.

NameConverter<T> is an interface that converts an object to a singular and optionally also a plural name. The name converter is used by NameText<T>. There are two default implementations of name converter:

• HandleNameConverter converts a handle to a name by using its id. It is not plural capable
• HandledNameConverter converts a handled object to a name by using its handle’s id. It is not plural capable

All NameConverter<T> implementations are annotated with @Component for the Injector module and will be automatically instantiated by it.

PluralConverter is an interface that converts a singular string into plural form. The default implementation DefaultPluralConverter has three rules:

• If the string ends in s, x or ch, es is added to the end of the string
• If the string ends in a consonant followed by y, the y is stripped and ies is added to the end of the string
• In all other cases, s is added to the end of the string

The implementation is annotated as a @Component for the Injector module and will be automatically instantiated by it.