Package org.elasticsearch.index.search

Class QueryParserHelper

java.lang.Object

org.elasticsearch.index.search.QueryParserHelper

public final class QueryParserHelper
extends java.lang.Object

Helpers to extract and expand field names and boosts

Method Summary

Modifier and Type	Method	Description
static Mapper	getFieldMapper(MapperService mapperService, java.lang.String field)	Get a FieldMapper associated with a field name or null.
static java.util.Map<java.lang.String,java.lang.Float>	parseFieldsAndWeights(java.util.List<java.lang.String> fields)	Convert a list of field names encoded with optional boosts to a map that associates the field name and its boost.
static java.util.Map<java.lang.String,java.lang.Float>	resolveMappingField(QueryShardContext context, java.lang.String fieldOrPattern, float weight, boolean acceptAllTypes, boolean acceptMetadataField)	Resolves the provided pattern or field name from the QueryShardContext and return a map of the expanded fields with their original boost.
static java.util.Map<java.lang.String,java.lang.Float>	resolveMappingField(QueryShardContext context, java.lang.String fieldOrPattern, float weight, boolean acceptAllTypes, boolean acceptMetadataField, java.lang.String fieldSuffix)	Resolves the provided pattern or field name from the QueryShardContext and return a map of the expanded fields with their original boost.
static java.util.Map<java.lang.String,java.lang.Float>	resolveMappingFields(QueryShardContext context, java.util.Map<java.lang.String,java.lang.Float> fieldsAndWeights)
static java.util.Map<java.lang.String,java.lang.Float>	resolveMappingFields(QueryShardContext context, java.util.Map<java.lang.String,java.lang.Float> fieldsAndWeights, java.lang.String fieldSuffix)	Resolve all the field names and patterns present in the provided map with the QueryShardContext and returns a new map containing all the expanded fields with their original boost.

Methods inherited from class java.lang.Object

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

Method Detail

parseFieldsAndWeights

public static java.util.Map<java.lang.String,java.lang.Float> parseFieldsAndWeights(java.util.List<java.lang.String> fields)

Convert a list of field names encoded with optional boosts to a map that associates the field name and its boost.

Parameters:

fields - The list of fields encoded with optional boosts (e.g. ^0.35).

Returns:

The converted map with field names and associated boosts.

getFieldMapper

public static Mapper getFieldMapper(MapperService mapperService,
                                    java.lang.String field)

Get a FieldMapper associated with a field name or null.

Parameters:

mapperService - The mapper service where to find the mapping.

field - The field name to search.

resolveMappingFields

public static java.util.Map<java.lang.String,java.lang.Float> resolveMappingFields(QueryShardContext context,
                                                                                   java.util.Map<java.lang.String,java.lang.Float> fieldsAndWeights)

resolveMappingFields

public static java.util.Map<java.lang.String,java.lang.Float> resolveMappingFields(QueryShardContext context,
                                                                                   java.util.Map<java.lang.String,java.lang.Float> fieldsAndWeights,
                                                                                   java.lang.String fieldSuffix)

Resolve all the field names and patterns present in the provided map with the QueryShardContext and returns a new map containing all the expanded fields with their original boost.

Parameters:

context - The context of the query.

fieldsAndWeights - The map of fields and weights to expand.

fieldSuffix - The suffix name to add to the expanded field names if a mapping exists for that name. The original name of the field is kept if adding the suffix to the field name does not point to a valid field in the mapping.

resolveMappingField

public static java.util.Map<java.lang.String,java.lang.Float> resolveMappingField(QueryShardContext context,
                                                                                  java.lang.String fieldOrPattern,
                                                                                  float weight,
                                                                                  boolean acceptAllTypes,
                                                                                  boolean acceptMetadataField)

Resolves the provided pattern or field name from the QueryShardContext and return a map of the expanded fields with their original boost.

Parameters:

context - The context of the query

fieldOrPattern - The field name or the pattern to resolve

weight - The weight for the field

acceptAllTypes - Whether all field type should be added when a pattern is expanded. If false, only ALLOWED_QUERY_MAPPER_TYPES are accepted and other field types are discarded from the query.

acceptMetadataField - Whether metadata fields should be added when a pattern is expanded.

resolveMappingField

public static java.util.Map<java.lang.String,java.lang.Float> resolveMappingField(QueryShardContext context,
                                                                                  java.lang.String fieldOrPattern,
                                                                                  float weight,
                                                                                  boolean acceptAllTypes,
                                                                                  boolean acceptMetadataField,
                                                                                  java.lang.String fieldSuffix)

Resolves the provided pattern or field name from the QueryShardContext and return a map of the expanded fields with their original boost.

Parameters:

context - The context of the query

fieldOrPattern - The field name or the pattern to resolve

weight - The weight for the field

acceptAllTypes - Whether all field type should be added when a pattern is expanded. If false, only ALLOWED_QUERY_MAPPER_TYPES are accepted and other field types are discarded from the query.

acceptMetadataField - Whether metadata fields should be added when a pattern is expanded.

fieldSuffix - The suffix name to add to the expanded field names if a mapping exists for that name. The original name of the field is kept if adding the suffix to the field name does not point to a valid field in the mapping.