85 lines
2.6 KiB
Go
85 lines
2.6 KiB
Go
// Copyright (c) 2014 Couchbase, Inc.
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
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// except in compliance with the License. You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software distributed under the
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// License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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// either express or implied. See the License for the specific language governing permissions
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// and limitations under the License.
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package query
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import (
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"fmt"
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"github.com/blevesearch/bleve/index"
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"github.com/blevesearch/bleve/mapping"
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"github.com/blevesearch/bleve/search"
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"github.com/blevesearch/bleve/search/searchers"
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)
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type NumericRangeQuery struct {
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Min *float64 `json:"min,omitempty"`
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Max *float64 `json:"max,omitempty"`
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InclusiveMin *bool `json:"inclusive_min,omitempty"`
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InclusiveMax *bool `json:"inclusive_max,omitempty"`
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FieldVal string `json:"field,omitempty"`
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BoostVal float64 `json:"boost,omitempty"`
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}
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// NewNumericRangeQuery creates a new Query for ranges
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// of numeric values.
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// Either, but not both endpoints can be nil.
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// The minimum value is inclusive.
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// The maximum value is exclusive.
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func NewNumericRangeQuery(min, max *float64) *NumericRangeQuery {
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return NewNumericRangeInclusiveQuery(min, max, nil, nil)
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}
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// NewNumericRangeInclusiveQuery creates a new Query for ranges
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// of numeric values.
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// Either, but not both endpoints can be nil.
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// Control endpoint inclusion with inclusiveMin, inclusiveMax.
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func NewNumericRangeInclusiveQuery(min, max *float64, minInclusive, maxInclusive *bool) *NumericRangeQuery {
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return &NumericRangeQuery{
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Min: min,
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Max: max,
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InclusiveMin: minInclusive,
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InclusiveMax: maxInclusive,
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BoostVal: 1.0,
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}
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}
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func (q *NumericRangeQuery) Boost() float64 {
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return q.BoostVal
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}
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func (q *NumericRangeQuery) SetBoost(b float64) Query {
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q.BoostVal = b
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return q
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}
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func (q *NumericRangeQuery) Field() string {
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return q.FieldVal
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}
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func (q *NumericRangeQuery) SetField(f string) Query {
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q.FieldVal = f
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return q
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}
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func (q *NumericRangeQuery) Searcher(i index.IndexReader, m mapping.IndexMapping, explain bool) (search.Searcher, error) {
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field := q.FieldVal
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if q.FieldVal == "" {
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field = m.DefaultSearchField()
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}
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return searchers.NewNumericRangeSearcher(i, q.Min, q.Max, q.InclusiveMin, q.InclusiveMax, field, q.BoostVal, explain)
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}
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func (q *NumericRangeQuery) Validate() error {
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if q.Min == nil && q.Min == q.Max {
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return fmt.Errorf("numeric range query must specify min or max")
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}
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return nil
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}
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