Package org.apache.lucene.util.fst

Class PairOutputs<A,B>

java.lang.Object

org.apache.lucene.util.fst.Outputs<PairOutputs.Pair<A,B>>

org.apache.lucene.util.fst.PairOutputs<A,B>

public class PairOutputs<A,B>
extends Outputs<PairOutputs.Pair<A,B>>

An FST Outputs implementation, holding two other outputs.

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

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	PairOutputs.Pair<A,B>	Holds a single pair of two outputs.

Constructor Summary

Constructors

Constructor	Description
PairOutputs(Outputs<A> outputs1, Outputs<B> outputs2)

Method Summary

Modifier and Type	Method	Description
PairOutputs.Pair<A,B>	add(PairOutputs.Pair<A,B> prefix, PairOutputs.Pair<A,B> output)	Eg add("foo", "bar") -> "foobar"
PairOutputs.Pair<A,B>	common(PairOutputs.Pair<A,B> pair1, PairOutputs.Pair<A,B> pair2)	Eg common("foobar", "food") -> "foo"
PairOutputs.Pair<A,B>	getNoOutput()	NOTE: this output is compared with == so you must ensure that all methods return the single object if it's really no output
PairOutputs.Pair<A,B>	newPair(A a, B b)	Create a new Pair
String	outputToString(PairOutputs.Pair<A,B> output)
long	ramBytesUsed(PairOutputs.Pair<A,B> output)	Return memory usage for the provided output.
PairOutputs.Pair<A,B>	read(DataInput in)	Decode an output value previously written with Outputs.write(Object, DataOutput).
void	skipOutput(DataInput in)	Skip the output; defaults to just calling Outputs.read(org.apache.lucene.store.DataInput) and discarding the result.
PairOutputs.Pair<A,B>	subtract(PairOutputs.Pair<A,B> output, PairOutputs.Pair<A,B> inc)	Eg subtract("foobar", "foo") -> "bar"
String	toString()
void	write(PairOutputs.Pair<A,B> output, DataOutput writer)	Encode an output value into a DataOutput.

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

merge, readFinalOutput, skipFinalOutput, writeFinalOutput

Methods inherited from class java.lang.Object

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

Constructor Details

PairOutputs

public PairOutputs(Outputs<A> outputs1,
 Outputs<B> outputs2)

Method Details

newPair

public PairOutputs.Pair<A,B> newPair(A a,
 B b)

Create a new Pair

common

public PairOutputs.Pair<A,B> common(PairOutputs.Pair<A,B> pair1,
 PairOutputs.Pair<A,B> pair2)

Description copied from class: Outputs

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

Specified by:

common in class Outputs<PairOutputs.Pair<A,B>>

subtract

public PairOutputs.Pair<A,B> subtract(PairOutputs.Pair<A,B> output,
 PairOutputs.Pair<A,B> inc)

Description copied from class: Outputs

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

Specified by:

subtract in class Outputs<PairOutputs.Pair<A,B>>

add

public PairOutputs.Pair<A,B> add(PairOutputs.Pair<A,B> prefix,
 PairOutputs.Pair<A,B> output)

Description copied from class: Outputs

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

Specified by:

add in class Outputs<PairOutputs.Pair<A,B>>

write

public void write(PairOutputs.Pair<A,B> output,
 DataOutput writer)
           throws IOException

Description copied from class: Outputs

Encode an output value into a DataOutput.

Specified by:

write in class Outputs<PairOutputs.Pair<A,B>>

Throws:

IOException

read

public PairOutputs.Pair<A,B> read(DataInput in)
                           throws IOException

Description copied from class: Outputs

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

Specified by:

read in class Outputs<PairOutputs.Pair<A,B>>

Throws:

IOException

skipOutput

public void skipOutput(DataInput in)
                throws IOException

Description copied from class: Outputs

Skip the output; defaults to just calling Outputs.read(org.apache.lucene.store.DataInput) and discarding the result.

Overrides:

skipOutput in class Outputs<PairOutputs.Pair<A,B>>

Throws:

IOException

getNoOutput

public PairOutputs.Pair<A,B> 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<PairOutputs.Pair<A,B>>

outputToString

public String outputToString(PairOutputs.Pair<A,B> output)

Specified by:

outputToString in class Outputs<PairOutputs.Pair<A,B>>

toString

public String toString()

Overrides:

toString in class Object

ramBytesUsed

public long ramBytesUsed(PairOutputs.Pair<A,B> output)

Description copied from class: Outputs

Return memory usage for the provided output.

Specified by:

ramBytesUsed in class Outputs<PairOutputs.Pair<A,B>>

See Also:

• Accountable