org.apache.lucene.util.fst
Class UpToTwoPositiveIntOutputs

java.lang.Object
  org.apache.lucene.util.fst.Outputs<Object>
      org.apache.lucene.util.fst.UpToTwoPositiveIntOutputs

public final class UpToTwoPositiveIntOutputs
extends Outputs<Object>

An FST Outputs implementation where each output is one or two non-negative long values. If it's a single output, Long is returned; else, TwoLongs. Order is preserved in the TwoLongs case, ie .first is the first input/output added to Builder, and .second is the second. You cannot store 0 output with this (that's reserved to mean "no output")! NOTE: the resulting FST is not guaranteed to be minimal! See Builder.

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

Nested Class Summary

static class

UpToTwoPositiveIntOutputs.TwoLongs Holds two long outputs.

Method Summary

Object	add(Object _prefix, Object _output) Eg add("foo", "bar") -> "foobar"
Long	common(Object _output1, Object _output2) Eg common("foo", "foobar") -> "foo"
Long	get(long v)
UpToTwoPositiveIntOutputs.TwoLongs	get(long first, long second)
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 UpToTwoPositiveIntOutputs	getSingleton(boolean doShare)
Object	merge(Object first, Object second)
String	outputToString(Object output)
Object	read(DataInput in)
Long	subtract(Object _output, Object _inc) Eg subtract("foobar", "foo") -> "bar"
void	write(Object _output, DataOutput out)

Methods inherited from class java.lang.Object

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

Method Detail

getSingleton

public static UpToTwoPositiveIntOutputs getSingleton(boolean doShare)

get

public Long get(long v)

get

public UpToTwoPositiveIntOutputs.TwoLongs get(long first,
                                              long second)

common

public Long common(Object _output1,
                   Object _output2)

Description copied from class: Outputs

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

Specified by:

common in class Outputs<Object>

subtract

public Long 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>

write

public void write(Object _output,
                  DataOutput out)
           throws IOException

Specified by:

write in class Outputs<Object>

Throws:

IOException

read

public Object read(DataInput in)
            throws IOException

Specified by:

read in class Outputs<Object>

Throws:

IOException

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>

merge

public Object merge(Object first,
                    Object second)

Overrides:

merge in class Outputs<Object>