Package org.apache.lucene.sandbox.document

Class BigIntegerPoint

java.lang.Object

org.apache.lucene.document.Field

org.apache.lucene.sandbox.document.BigIntegerPoint

All Implemented Interfaces:

IndexableField

public class BigIntegerPoint
extends Field

An indexed 128-bit BigInteger field.

Finding all documents within an N-dimensional shape or range at search time is efficient. Multiple values for the same field in one document is allowed.

This field defines static factory methods for creating common queries:

• newExactQuery(String, BigInteger) for matching an exact 1D point.
• newSetQuery(String, BigInteger...) for matching a set of 1D values.
• newRangeQuery(String, BigInteger, BigInteger) for matching a 1D range.
• newRangeQuery(String, BigInteger[], BigInteger[]) for matching points/ranges in n-dimensional space.

See Also:

PointValues

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.document.Field

Field.Store

Field Summary

Fields

Modifier and Type	Field	Description
static int	BYTES	The number of bytes per dimension: 128 bits.
static BigInteger	MAX_VALUE	A constant holding the maximum value a BigIntegerPoint can have, 2127-1.
static BigInteger	MIN_VALUE	A constant holding the minimum value a BigIntegerPoint can have, -2127.

Fields inherited from class org.apache.lucene.document.Field

fieldsData, name, tokenStream, type

Constructor Summary

Constructors

Constructor	Description
BigIntegerPoint(String name, BigInteger... point)	Creates a new BigIntegerPoint, indexing the provided N-dimensional big integer point.

Method Summary

Modifier and Type	Method	Description
static BigInteger	decodeDimension(byte[] value, int offset)	Decode single BigInteger dimension
static void	encodeDimension(BigInteger value, byte[] dest, int offset)	Encode single BigInteger dimension
static Query	newExactQuery(String field, BigInteger value)	Create a query for matching an exact big integer value.
static Query	newRangeQuery(String field, BigInteger[] lowerValue, BigInteger[] upperValue)	Create a range query for n-dimensional big integer values.
static Query	newRangeQuery(String field, BigInteger lowerValue, BigInteger upperValue)	Create a range query for big integer values.
static Query	newSetQuery(String field, BigInteger... values)	Create a query matching any of the specified 1D values.
Number	numericValue()
void	setBigIntegerValues(BigInteger... point)	Change the values of this field
void	setBytesValue(BytesRef bytes)
String	toString()

Methods inherited from class org.apache.lucene.document.Field

binaryValue, fieldType, getCharSequenceValue, name, readerValue, setBytesValue, setByteValue, setDoubleValue, setFloatValue, setIntValue, setLongValue, setReaderValue, setShortValue, setStringValue, setTokenStream, stringValue, tokenStream, tokenStreamValue

Methods inherited from class java.lang.Object

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

Field Detail

BYTES

public static final int BYTES

The number of bytes per dimension: 128 bits.

See Also:

Constant Field Values

MIN_VALUE

public static final BigInteger MIN_VALUE

A constant holding the minimum value a BigIntegerPoint can have, -2¹²⁷.

MAX_VALUE

public static final BigInteger MAX_VALUE

A constant holding the maximum value a BigIntegerPoint can have, 2¹²⁷-1.

Constructor Detail

BigIntegerPoint

public BigIntegerPoint(String name,
                       BigInteger... point)

Creates a new BigIntegerPoint, indexing the provided N-dimensional big integer point.

Parameters:

name - field name

point - BigInteger[] value

Throws:

IllegalArgumentException - if the field name or value is null.

Method Detail

setBigIntegerValues

public void setBigIntegerValues(BigInteger... point)

Change the values of this field

setBytesValue

public void setBytesValue(BytesRef bytes)

Overrides:

setBytesValue in class Field

numericValue

public Number numericValue()

Specified by:

numericValue in interface IndexableField

Overrides:

numericValue in class Field

toString

public String toString()

Overrides:

toString in class Field

encodeDimension

public static void encodeDimension(BigInteger value,
                                   byte[] dest,
                                   int offset)

Encode single BigInteger dimension

decodeDimension

public static BigInteger decodeDimension(byte[] value,
                                         int offset)

Decode single BigInteger dimension

newExactQuery

public static Query newExactQuery(String field,
                                  BigInteger value)

Create a query for matching an exact big integer value.

This is for simple one-dimension points, for multidimensional points use newRangeQuery(String, BigInteger[], BigInteger[]) instead.

Parameters:

field - field name. must not be null.

value - exact value. must not be null.

Returns:

a query matching documents with this exact value

Throws:

IllegalArgumentException - if field is null or value is null.

newRangeQuery

public static Query newRangeQuery(String field,
                                  BigInteger lowerValue,
                                  BigInteger upperValue)

Create a range query for big integer values.

This is for simple one-dimension ranges, for multidimensional ranges use newRangeQuery(String, BigInteger[], BigInteger[]) instead.

You can have half-open ranges (which are in fact </≤ or >/≥ queries) by setting lowerValue = BigIntegerPoint.MIN_VALUE or upperValue = BigIntegerPoint.MAX_VALUE.

Ranges are inclusive. For exclusive ranges, pass lowerValue.add(BigInteger.ONE) or upperValue.subtract(BigInteger.ONE)

Parameters:

field - field name. must not be null.

lowerValue - lower portion of the range (inclusive). must not be null.

upperValue - upper portion of the range (inclusive). must not be null.

Returns:

a query matching documents within this range.

Throws:

IllegalArgumentException - if field is null, lowerValue is null, or upperValue is null.

newRangeQuery

public static Query newRangeQuery(String field,
                                  BigInteger[] lowerValue,
                                  BigInteger[] upperValue)

Create a range query for n-dimensional big integer values.

You can have half-open ranges (which are in fact </≤ or >/≥ queries) by setting lowerValue[i] = BigIntegerPoint.MIN_VALUE or upperValue[i] = BigIntegerPoint.MAX_VALUE.

Ranges are inclusive. For exclusive ranges, pass lowerValue[i].add(BigInteger.ONE) or upperValue[i].subtract(BigInteger.ONE)

Parameters:

field - field name. must not be null.

lowerValue - lower portion of the range (inclusive). must not be null.

upperValue - upper portion of the range (inclusive). must not be null.

Returns:

a query matching documents within this range.

Throws:

IllegalArgumentException - if field is null, if lowerValue is null, if upperValue is null, or if lowerValue.length != upperValue.length

newSetQuery

public static Query newSetQuery(String field,
                                BigInteger... values)

Create a query matching any of the specified 1D values. This is the points equivalent of TermsQuery.

Parameters:

field - field name. must not be null.

values - all values to match