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Hasher (Guava: Google Core Libraries for Java 11.0.1 API)
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com.google.common.hash
Interface Hasher
- All Superinterfaces:
- Sink
A Sink
that can compute a hash code after reading the input. Each hasher should
translate all multibyte values (putInt(int)
, putLong(long)
, etc) to bytes
in little-endian order.
- Since:
- 11.0
- Author:
- Kevin Bourrillion
Method Summary | ||
---|---|---|
HashCode |
hash()
Computes a hash code based on the data that have been provided to this hasher. |
|
Hasher |
putBoolean(boolean b)
Equivalent to putByte(b ? (byte) 1 : (byte) 0) . |
|
Hasher |
putByte(byte b)
Puts a byte into this sink. |
|
Hasher |
putBytes(byte[] bytes)
Puts an array of bytes into this sink. |
|
Hasher |
putBytes(byte[] bytes,
int off,
int len)
Puts a chunk of an array of bytes into this sink. |
|
Hasher |
putChar(char c)
Puts a character into this sink. |
|
Hasher |
putDouble(double d)
Equivalent to putLong(Double.doubleToRawLongBits(d)) . |
|
Hasher |
putFloat(float f)
Equivalent to putInt(Float.floatToRawIntBits(f)) . |
|
Hasher |
putInt(int i)
Puts an int into this sink. |
|
Hasher |
putLong(long l)
Puts a long into this sink. |
|
|
putObject(T instance,
Funnel<? super T> funnel)
A simple convenience for funnel.funnel(object, this) . |
|
Hasher |
putShort(short s)
Puts a short into this sink. |
|
Hasher |
putString(CharSequence charSequence)
Equivalent to putBytes(charSequence.toString().getBytes(Charsets.UTF_16LE) . |
|
Hasher |
putString(CharSequence charSequence,
Charset charset)
Equivalent to putBytes(charSequence.toString().getBytes(charset) . |
Method Detail |
---|
putByte
Hasher putByte(byte b)
- Description copied from interface:
Sink
- Puts a byte into this sink.
- Parameters:
b
- a byte- Returns:
- this instance
putBytes
Hasher putBytes(byte[] bytes)
- Description copied from interface:
Sink
- Puts an array of bytes into this sink.
- Parameters:
bytes
- a byte array- Returns:
- this instance
putBytes
Hasher putBytes(byte[] bytes, int off, int len)
- Description copied from interface:
Sink
- Puts a chunk of an array of bytes into this sink.
bytes[off]
is the first byte written,bytes[off + len - 1]
is the last.- Parameters:
bytes
- a byte arrayoff
- the start offset in the arraylen
- the number of bytes to write- Returns:
- this instance
putShort
Hasher putShort(short s)
- Description copied from interface:
Sink
- Puts a short into this sink.
putInt
Hasher putInt(int i)
- Description copied from interface:
Sink
- Puts an int into this sink.
putLong
Hasher putLong(long l)
- Description copied from interface:
Sink
- Puts a long into this sink.
putFloat
Hasher putFloat(float f)
putDouble
Hasher putDouble(double d)
putBoolean
Hasher putBoolean(boolean b)
- Equivalent to
putByte(b ? (byte) 1 : (byte) 0)
.- Specified by:
putBoolean
in interfaceSink
putChar
Hasher putChar(char c)
- Description copied from interface:
Sink
- Puts a character into this sink.
putString
Hasher putString(CharSequence charSequence)
- Equivalent to
putBytes(charSequence.toString().getBytes(Charsets.UTF_16LE)
.
putString
Hasher putString(CharSequence charSequence, Charset charset)
- Equivalent to
putBytes(charSequence.toString().getBytes(charset)
.
putObject
<T> Hasher putObject(T instance, Funnel<? super T> funnel)
- A simple convenience for
funnel.funnel(object, this)
.
hash
HashCode hash()
- Computes a hash code based on the data that have been provided to this hasher. The result is
unspecified if this method is called more than once on the same instance.
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