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.

WARNING: This API is experimental and might change in incompatible ways in the next release.

Method Summary

Methods

Modifier and Type	Method and Description
Object	add(Object prefix, Object output) Eg add("foo", "bar") -> "foobar"
Object	common(Object output1, Object output2) Eg common("foo", "foobar") -> "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)
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"
void	write(Object prefix, DataOutput out) Encode an output value into a DataOutput.

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

readFinalOutput, writeFinalOutput

Methods inherited from class java.lang.Object

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

Method Detail

getSingleton

public static NoOutputs getSingleton()

common

public Object common(Object output1,
            Object output2)

Description copied from class: Outputs

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