Module org.apache.lucene.core

Package org.apache.lucene.util.fst

Class NoOutputs

java.lang.Object

org.apache.lucene.util.fst.Outputs<Object>

org.apache.lucene.util.fst.NoOutputs

public final class NoOutputs
extends Outputs<Object>

A null FST Outputs implementation; use this if you just want to build an FSA.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static final Object	NO_OUTPUT
private static final NoOutputs	singleton

Constructor Summary

Constructors

Modifier	Constructor	Description
private	NoOutputs()

Method Summary

Modifier and Type	Method	Description
Object	add(Object prefix, Object output)	Eg add("foo", "bar") -> "foobar"
Object	common(Object output1, Object output2)	Eg common("foobar", "food") -> "foo"
Object	getNoOutput()	NOTE: this output is compared with == so you must ensure that all methods return the single object if it's really no output
static NoOutputs	getSingleton()
Object	merge(Object first, Object second)
String	outputToString(Object output)
long	ramBytesUsed(Object output)	Return memory usage for the provided output.
Object	read(DataInput in)	Decode an output value previously written with Outputs.write(Object, DataOutput).
Object	subtract(Object output, Object inc)	Eg subtract("foobar", "foo") -> "bar"
String	toString()
void	write(Object prefix, DataOutput out)	Encode an output value into a DataOutput.

Methods inherited from class org.apache.lucene.util.fst.Outputs

readFinalOutput, skipFinalOutput, skipOutput, writeFinalOutput

Methods inherited from class java.lang.Object

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

Field Details

NO_OUTPUT

static final Object NO_OUTPUT

singleton

private static final NoOutputs singleton

Constructor Details

NoOutputs

private NoOutputs()

Method Details

getSingleton

public static NoOutputs getSingleton()

common

public Object common(Object output1,
 Object output2)

Description copied from class: Outputs

Eg common("foobar", "food") -> "foo"

Specified by:

common in class Outputs<Object>

subtract

public Object subtract(Object output,
 Object inc)

Description copied from class: Outputs

Eg subtract("foobar", "foo") -> "bar"

Specified by:

subtract in class Outputs<Object>

add

public Object add(Object prefix,
 Object output)

Description copied from class: Outputs

Eg add("foo", "bar") -> "foobar"

Specified by:

add in class Outputs<Object>

merge

public Object merge(Object first,
 Object second)

Overrides:

merge in class Outputs<Object>

write

public void write(Object prefix,
 DataOutput out)

Description copied from class: Outputs

Encode an output value into a DataOutput.

Specified by:

write in class Outputs<Object>

read

public Object read(DataInput in)

Description copied from class: Outputs

Decode an output value previously written with Outputs.write(Object, DataOutput).

Specified by:

read in class Outputs<Object>

getNoOutput

public Object getNoOutput()

Description copied from class: Outputs

NOTE: this output is compared with == so you must ensure that all methods return the single object if it's really no output

Specified by:

getNoOutput in class Outputs<Object>

outputToString

public String outputToString(Object output)

Specified by:

outputToString in class Outputs<Object>

ramBytesUsed

public long ramBytesUsed(Object output)

Description copied from class: Outputs

Return memory usage for the provided output.

Specified by:

ramBytesUsed in class Outputs<Object>

See Also:

• Accountable

toString

public String toString()

Overrides:

toString in class Object