org.codice.ddf.spatial.geocoding.index

Class GeoNamesLuceneConstants

java.lang.Object

org.codice.ddf.spatial.geocoding.index.GeoNamesLuceneConstants

public class GeoNamesLuceneConstants
extends Object

Contains the names of the fields in the GeoNames Lucene index and constants relevant to the index.

Field Summary

Fields

Modifier and Type	Field and Description
static String	ALTERNATE_NAMES_FIELD
static String	BOOST_FIELD
static String	COUNTRY_CODE_FIELD
static String	FEATURE_CODE_FIELD
static String	GEO_FIELD
static int	GEOHASH_LEVELS By default, Lucene's SpatialPrefixTree uses 12 levels which results in sub-meter precision.
static String	LATITUDE_FIELD
static String	LONGITUDE_FIELD
static String	NAME_FIELD
static String	POPULATION_DOCVALUES_FIELD
static String	POPULATION_FIELD

Constructor Summary

Constructors

Constructor and Description
GeoNamesLuceneConstants()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

NAME_FIELD

public static final String NAME_FIELD

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Constant Field Values

LATITUDE_FIELD

public static final String LATITUDE_FIELD

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Constant Field Values

LONGITUDE_FIELD

public static final String LONGITUDE_FIELD

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Constant Field Values

FEATURE_CODE_FIELD

public static final String FEATURE_CODE_FIELD

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Constant Field Values

POPULATION_FIELD

public static final String POPULATION_FIELD

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Constant Field Values

ALTERNATE_NAMES_FIELD

public static final String ALTERNATE_NAMES_FIELD

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Constant Field Values

BOOST_FIELD

public static final String BOOST_FIELD

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Constant Field Values

GEO_FIELD

public static final String GEO_FIELD

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Constant Field Values

POPULATION_DOCVALUES_FIELD

public static final String POPULATION_DOCVALUES_FIELD

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Constant Field Values

COUNTRY_CODE_FIELD

public static final String COUNTRY_CODE_FIELD

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Constant Field Values

GEOHASH_LEVELS

public static final int GEOHASH_LEVELS

By default, Lucene's SpatialPrefixTree uses 12 levels which results in sub-meter precision. Our queries are on the scale of kilometers, so we don't need this level of precision - additionally, decreasing the number of levels results in faster queries.

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Constant Field Values

Constructor Detail

GeoNamesLuceneConstants

public GeoNamesLuceneConstants()