NoSQLBench

conversion functions

Conversion functions simply allow values of one type to be converted to another type in an obvious way.

ByteBufferSizedHashed🔗

Create a ByteBuffer from a long input based on a provided size function. As a 'Sized' function, the first argument is a function which determines the size of the resulting ByteBuffer. As a 'Hashed' function, the input value is hashed again before being used as value.

  • long -> ByteBufferSizedHashed(int: size) -> java.nio.ByteBuffer

    • example: ByteBufferSizedHashed(16)
    • Functionally identical to HashedtoByteBuffer(16) but using dynamic sizing implementation
    • example: ByteBufferSizedHashed(HashRange(10, 14))
    • Create a ByteBuffer with variable limit (10 to 14)

  • long -> ByteBufferSizedHashed(Object: sizeFunc) -> java.nio.ByteBuffer

ByteBufferToHex🔗

Convert the contents of the input ByteBuffer to a String as hexadecimal. This function is retained to avoid breaking previous workload definitions, but you should use {@link ToHexString} instead.

  • java.nio.ByteBuffer -> ByteBufferToHex() -> String

DecimalFormat🔗

Formats a floating point value to a string using the java.text.DecimalFormat

  • double -> DecimalFormat(String: format) -> String
    • example: DecimalFormat('.##')
    • converts a double value to a string with only two digits after the decimal

DigestToByteBuffer🔗

Computes the digest of the ByteBuffer on input and stores it in the output ByteBuffer. The digestTypes available are: MD2 MD5 SHA-1 SHA-224 SHA-256 SHA-384 SHA-512 SHA3-224 SHA3-256 SHA3-384 SHA3-512

  • long -> DigestToByteBuffer(String: digestType) -> java.nio.ByteBuffer

  • java.nio.ByteBuffer -> DigestToByteBuffer(String: digestType) -> java.nio.ByteBuffer

DoubleToFloat🔗

Convert the input double value to the closest float value.

  • double -> DoubleToFloat() -> Float

Flow🔗

Combine functions into one.

This function allows you to combine multiple other functions into one. This is often useful for constructing more sophisticated recipes, when you don't have the ability to use control flow or non-functional forms.

The functions will be stitched together using the same logic that VirtData uses when combining flows outside functions. That said, if the functions selected are not the right ones, then it is possible to end up with the wrong data type at the end. To remedy this, be sure to add input and output qualifiers, like long-> or ->String where appropriate, to ensure that VirtData selects the right functions within the flow.

  • long -> Flow(Object[]...: funcs) -> Object

Format🔗

Apply the Java String.format method to an incoming object. @see Java 8 String.format(...) javadoc Note: This function can often be quite slow, so more direct methods are generally preferrable.

  • Object -> Format(String: format) -> String
    • example: Format('Y')
    • Yield the formatted year from a Java date object.

HTMLEntityDecode🔗

encode HTML Entities

  • String -> HTMLEntityDecode() -> String
    • example: HTMLEntityEncode()
    • Decode/Unescape input from HTML4 valid to text.

HTMLEntityEncode🔗

encode HTML Entities

  • String -> HTMLEntityEncode() -> String
    • example: HTMLEntityEncode()
    • Encode/Escape input into HTML4 valid entties.

LongToByte🔗

Convert the input long value to a byte, with negative values masked away.

  • long -> LongToByte() -> Byte

LongToShort🔗

Convert the input value from long to short.

  • long -> LongToShort() -> Short

MD5HexString🔗

Computes the MD5 digest of the byte image of the input long, and returns it in hexadecimal String form.

  • long -> MD5HexString() -> String
    • example: MD5String()
    • Convert a long input to an md5 digest over its bytes, and then to a hexadecimal string.

ModuloToBigDecimal🔗

Return a {@code BigDecimal} value as the result of modulo division with the specified divisor.

  • long -> ModuloToBigDecimal() -> java.math.BigDecimal

  • long -> ModuloToBigDecimal(long: modulo) -> java.math.BigDecimal

ModuloToBigInt🔗

Return a {@code BigInteger} value as the result of modulo division with the specified divisor.

  • long -> ModuloToBigInt() -> java.math.BigInteger

  • long -> ModuloToBigInt(long: modulo) -> java.math.BigInteger

ModuloToBoolean🔗

Return a boolean value as the result of modulo division with the specified divisor.

  • long -> ModuloToBoolean() -> Boolean

ModuloToByte🔗

Return a byte value as the result of modulo division with the specified divisor.

  • long -> ModuloToByte(long: modulo) -> Byte

ModuloToShort🔗

Return a boolean value as the result of modulo division with the specified divisor.

  • long -> ModuloToShort(long: modulo) -> Short

SnappyComp🔗

Compress the input using snappy compression

  • String -> SnappyComp() -> java.nio.ByteBuffer

StringDateWrapper🔗

This function wraps an epoch time in milliseconds into a String as specified in the format. The valid formatters are documented at @see DateTimeFormat API Docs

  • long -> StringDateWrapper(String: format) -> String

ToBase64String🔗

Computes the Base64 representation of the byte image of the input long.

  • String -> ToBase64String() -> String

    • example: ToBase64String()
    • encode any input as Base64

  • long -> ToBase64String() -> String

    • example: ToBase64String()
    • Convert the bytes of a long input into a base64 String

ToBigDecimal🔗

Convert values to BigDecimals at configurable scale or precision.

ToBigDecimal(...) functions which take whole-numbered inputs may have a scale parameter or a custom MathContext, but not both. The scale parameter is not supported for String or Double input forms.

  • double -> ToBigDecimal() -> java.math.BigDecimal

    • example: ToBigDecimal()
    • Convert all double values to BigDecimal values with no limits (using MathContext.UNLIMITED)

  • double -> ToBigDecimal(String: context) -> java.math.BigDecimal

    • notes: Convert all input values to BigDecimal values with a specific MathContext. The value for context can be one of UNLIMITED, DECIMAL32, DECIMAL64, DECIMAL128, or any valid configuration supported by {@link MathContext#MathContext(String)}, such as {@code "precision=32 roundingMode=CEILING"}. In the latter form, roundingMode can be any valid value for {@link RoundingMode}, like UP, DOWN, CEILING, FLOOR, HALF_UP, HALF_DOWN, HALF_EVEN, or UNNECESSARY.

    • example: ToBigDecimal('DECIMAL32')

    • IEEE 754R Decimal32 format, 7 digits, HALF_EVEN

    • example: ToBigDecimal('DECIMAL64'),

    • IEEE 754R Decimal64 format, 16 digits, HALF_EVEN

    • example: ToBigDecimal('DECIMAL128')

    • IEEE 754R Decimal128 format, 34 digits, HALF_EVEN

    • example: ToBigDecimal('UNLIMITED')

    • unlimited precision, HALF_UP

    • example: ToBigDecimal('precision=17 roundingMode=UNNECESSARY')

    • Custom precision with no rounding performed

  • long -> ToBigDecimal() -> java.math.BigDecimal

    • example: ToBigDecimal()
    • Convert all long values to whole-numbered BigDecimal values

  • long -> ToBigDecimal(int: scale) -> java.math.BigDecimal

    • example: ToBigDecimal(0)
    • Convert all long values to whole-numbered BigDecimal values
    • example: ToBigDecimal(2)
    • Convert long 'pennies' BigDecimal with 2 digits after decimal point

  • long -> ToBigDecimal(String: context) -> java.math.BigDecimal

    • notes: Convert all input values to BigDecimal values with a specific MathContext. This form is only supported for scale=0, meaning whole numbers. The value for context can be one of UNLIMITED, DECIMAL32, DECIMAL64, DECIMAL128, or any valid configuration supported by {@link MathContext#MathContext(String)}, such as {@code "precision=32 roundingMode=CEILING"}. In the latter form, roundingMode can be any valid value for {@link RoundingMode}, like UP, DOWN, CEILING, FLOOR, HALF_UP, HALF_DOWN, HALF_EVEN, or UNNECESSARY.

    • example: ToBigDecimal('DECIMAL32')

    • IEEE 754R Decimal32 format, 7 digits, HALF_EVEN

    • example: ToBigDecimal('DECIMAL64'),

    • IEEE 754R Decimal64 format, 16 digits, HALF_EVEN

    • example: ToBigDecimal('DECIMAL128')

    • IEEE 754R Decimal128 format, 34 digits, HALF_EVEN

    • example: ToBigDecimal('UNLIMITED')

    • unlimited precision, HALF_UP

    • example: ToBigDecimal('precision=17 roundingMode=UNNECESSARY')

    • Custom precision with no rounding performed

  • int -> ToBigDecimal() -> java.math.BigDecimal

    • example: ToBigDecimal()
    • Convert all int values to BigDecimal values with no limits (using MathContext.UNLIMITED)

  • int -> ToBigDecimal(String: context) -> java.math.BigDecimal

    • notes: Convert all input values to BigDecimal values with a specific MathContext. The value for context can be one of UNLIMITED, DECIMAL32, DECIMAL64, DECIMAL128, or any valid configuration supported by {@link MathContext#MathContext(String)}, such as {@code "precision=32 roundingMode=CEILING"}. In the latter form, roundingMode can be any valid value for {@link RoundingMode}, like UP, DOWN, CEILING, FLOOR, HALF_UP, HALF_DOWN, HALF_EVEN, or UNNECESSARY.

    • example: ToBigDecimal('DECIMAL32')

    • IEEE 754R Decimal32 format, 7 digits, HALF_EVEN

    • example: ToBigDecimal('DECIMAL64'),

    • IEEE 754R Decimal64 format, 16 digits, HALF_EVEN

    • example: ToBigDecimal('DECIMAL128')

    • IEEE 754R Decimal128 format, 34 digits, HALF_EVEN

    • example: ToBigDecimal('UNLIMITED')

    • unlimited precision, HALF_UP

    • example: ToBigDecimal('precision=17 roundingMode=UNNECESSARY')

    • Custom precision with no rounding performed

  • String -> ToBigDecimal() -> java.math.BigDecimal

    • example: Convert strings to BigDecimal according to default precision (unlimited) and rounding (HALF_UP)

  • String -> ToBigDecimal(String: context) -> java.math.BigDecimal

    • notes: Convert all input values to BigDecimal values with a specific MathContext. This form is only supported for scale=0, meaning whole numbers. The value for context can be one of UNLIMITED, DECIMAL32, DECIMAL64, DECIMAL128, or any valid configuration supported by {@link MathContext#MathContext(String)}, such as {@code "precision=32 roundingMode=CEILING"}. In the latter form, roundingMode can be any valid value for {@link RoundingMode}, like UP, DOWN, CEILING, FLOOR, HALF_UP, HALF_DOWN, HALF_EVEN, or UNNECESSARY.

ToBigInt🔗

Convert the input value to a {@code BigInteger}

  • long -> ToBigInt() -> java.math.BigInteger

ToBoolean🔗

Convert the input value to a {@code boolean}

  • Float -> ToBoolean() -> Boolean

  • Double -> ToBoolean() -> Boolean

  • long -> ToBoolean() -> Boolean

  • Integer -> ToBoolean() -> Boolean

ToByte🔗

Convert the input value to a {@code Byte}.

  • Float -> ToByte() -> Byte

  • Float -> ToByte(int: modulo) -> Byte

  • Short -> ToByte(int: scale) -> Byte

  • Short -> ToByte() -> Byte

  • String -> ToByte() -> Byte

  • long -> ToByte() -> Byte

  • long -> ToByte(int: modulo) -> Byte

  • int -> ToByte() -> Byte

  • int -> ToByte(int: modulo) -> Byte

  • double -> ToByte() -> Byte

  • double -> ToByte(int: modulo) -> Byte

ToByteBuffer🔗

Convert the input value to a {@code ByteBuffer}

  • String -> ToByteBuffer() -> java.nio.ByteBuffer

  • java.nio.CharBuffer -> ToByteBuffer() -> java.nio.ByteBuffer

  • int -> ToByteBuffer() -> java.nio.ByteBuffer

  • long -> ToByteBuffer() -> java.nio.ByteBuffer

  • long -> ToByteBuffer(int: size) -> java.nio.ByteBuffer

    • example: ToByteBuffer(13)
    • Repeat the input long value to make a 13byte buffer

  • Float -> ToByteBuffer() -> java.nio.ByteBuffer

  • Short -> ToByteBuffer() -> java.nio.ByteBuffer

  • double -> ToByteBuffer() -> java.nio.ByteBuffer

ToCharBuffer🔗

Convert the input string to a character buffer

  • String -> ToCharBuffer() -> java.nio.CharBuffer

ToCqlDurationNanos🔗

Convert the input value into a {@link com.datastax.driver.core.Duration} by reading the input as total nanoseconds, assuming 30-month days.

  • long -> ToCqlDurationNanos() -> com.datastax.driver.core.Duration

ToDouble🔗

Convert the input value to a double.

  • long -> ToDouble() -> double

ToFloat🔗

Convert the input value into a float.

  • long -> ToFloat(long: scale) -> Float

  • long -> ToFloat() -> Float

  • double -> ToFloat(double: scale) -> Float

  • double -> ToFloat() -> Float

  • int -> ToFloat(int: scale) -> Float

  • int -> ToFloat() -> Float

  • String -> ToFloat() -> Float

  • Short -> ToFloat() -> Float

ToHexString🔗

Converts the input ByteBuffer to a hexadecimal String.

  • long -> ToHexString() -> String

  • java.nio.ByteBuffer -> ToHexString() -> String

    • notes: Convert the ByteBuffer's contents to a hex string using upper case by default.

  • java.nio.ByteBuffer -> ToHexString(boolean: useUpperCase) -> String

    • notes: Convert the ByteBuffer's contents to a hex string upper or lower case.

ToInetAddress🔗

Convert the input value to a {@code InetAddress}

  • long -> ToInetAddress() -> InetAddress

ToInt🔗

Convert the input value to an int with long modulus remainder. If the scale is chosen, then the value is wrapped at this value. Otherwise, {@link Integer#MAX_VALUE} is used.

  • Object -> ToInt() -> Integer

  • Double -> ToInt(int: scale) -> Integer

  • Double -> ToInt() -> Integer

  • double -> ToInt(int: scale) -> int

  • double -> ToInt() -> int

  • long -> ToInt() -> int

  • String -> ToInt() -> Integer

  • long -> ToInt(int: scale) -> int

    • example: ToInt(1000)
    • converts a long input value to an int between 0 and 999, inclusive

  • long -> ToInt() -> int

    • example: ToInt()
    • *converts a long input value to an int between 0 and 2147483647, inclusive *

ToJSON🔗

Convert the input object to a JSON string with Gson.

  • Object -> ToJSON() -> String

ToJSONPretty🔗

Convert the input object to a JSON string with Gson, with pretty printing enabled.

  • Object -> ToJSONPretty() -> String

ToLong🔗

Convert the input value to a long.

  • Float -> ToLong(long: scale) -> Long

  • Float -> ToLong() -> Long

  • String -> ToLong() -> Long

  • double -> ToLong(long: scale) -> long

  • double -> ToLong() -> long

ToMD5ByteBuffer🔗

Converts the byte image of the input long to a MD5 digest in ByteBuffer form.

  • long -> ToMD5ByteBuffer() -> java.nio.ByteBuffer
    • example: MD5ByteBuffer()
    • convert the a input to an md5 digest of its bytes

ToShort🔗

Convert the input value to a short.

  • String -> ToShort() -> Short

  • Float -> ToShort() -> Short

  • Float -> ToShort(int: modulo) -> Short

  • long -> ToShort() -> Short

  • long -> ToShort(int: wrapat) -> Short

    • notes: This form allows for limiting the short values at a lower limit than Short.MAX_VALUE. @param wrapat The maximum value to return.

  • int -> ToShort() -> Short

  • int -> ToShort(int: scale) -> Short

  • double -> ToShort() -> Short

  • double -> ToShort(int: modulo) -> Short

ToString🔗

Converts the input to the most obvious string representation with String.valueOf(...). Forms which accept a function will evaluate that function first and then apply String.valueOf() to the result.

  • Float -> ToString() -> String

  • long -> ToString() -> String

  • long -> ToString(function.LongUnaryOperator: f) -> String

  • long -> ToString(function.LongFunction<?>: f) -> String

  • long -> ToString(function.Function<Long,?>: f) -> String

  • long -> ToString(function.LongToIntFunction: f) -> String

  • long -> ToString(function.LongToDoubleFunction: f) -> String

  • long -> ToString(io.nosqlbench.virtdata.library.basics.shared.from_long.to_byte.LongToByte: f) -> String

  • long -> ToString(io.nosqlbench.virtdata.library.basics.shared.from_long.to_short.LongToShort: f) -> String

  • double -> ToString() -> String

    • example: ToString()
    • map the double input value to a String

  • double -> ToString(function.DoubleUnaryOperator: df) -> String

    • example: ToString(Add(5.7D))
    • map the double input value X to X+5.7D and then to a String

  • double -> ToString(function.DoubleFunction: df) -> String

  • double -> ToString(function.Function<Double,Double>: df) -> String

  • int -> ToString() -> String

  • Object -> ToString() -> String

ToUUID🔗

This function creates a non-random UUID in the type 4 version (Random). It always puts the same value in the MSB position of the UUID format. The input value is put in the LSB position. This function is suitable for deterministic testing of scenarios which depend on type 4 UUIDs, but without the mandated randomness that makes testing difficult. Just be aware that the MSB will always contain value 0x0123456789ABCDEFL unless you specify a different long value to pre-fill it with.

  • long -> ToUUID() -> UUID

  • long -> ToUUID(long: msbs) -> UUID

URLDecode🔗

URLDecode string data

  • String -> URLDecode(String: charset) -> String
    • notes: URLDecode any incoming string using the specified charset.

@param charset A valid character set name from {@link Charset}

  • example: URLDecode('UTF-16')

  • URLDecode using the UTF-16 charset.

  • String -> URLDecode() -> String

    • example: URLDecode()
    • URLDecode using the default UTF-8 charset.

URLEncode🔗

URLEncode string data

  • String -> URLEncode(String: charset) -> String
    • notes: UrlEncode any incoming string using the specified charset.

@param charset A valid character set name from {@link Charset}

  • example: URLEncode('UTF-16')

  • URLEncode using the UTF-16 charset.

  • String -> URLEncode() -> String

    • example: URLEncode()
    • URLEncode using the default UTF-8 charset.
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