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bleve/query_prefix.go
Marty Schoch 2ee7289bc8 major refactor of search package
this started initially to relocate highlighting into
a self contained package, which would then also use
the registry
however, it turned into a much larger refactor in
order to avoid cyclic imports
now facets, searchers, scorers and collectors
are also broken out into subpackages of search
2014-09-01 11:15:38 -04:00

62 lines
1.6 KiB
Go

// Copyright (c) 2014 Couchbase, Inc.
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
// except in compliance with the License. You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software distributed under the
// License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
// either express or implied. See the License for the specific language governing permissions
// and limitations under the License.
package bleve
import (
"github.com/blevesearch/bleve/search"
"github.com/blevesearch/bleve/search/searchers"
)
type prefixQuery struct {
Prefix string `json:"prefix"`
FieldVal string `json:"field,omitempty"`
BoostVal float64 `json:"boost,omitempty"`
}
// NewPrefixQuery creates a new Query which finds
// documents containing terms that start with the
// specified prefix.
func NewPrefixQuery(prefix string) *prefixQuery {
return &prefixQuery{
Prefix: prefix,
BoostVal: 1.0,
}
}
func (q *prefixQuery) Boost() float64 {
return q.BoostVal
}
func (q *prefixQuery) SetBoost(b float64) Query {
q.BoostVal = b
return q
}
func (q *prefixQuery) Field() string {
return q.FieldVal
}
func (q *prefixQuery) SetField(f string) Query {
q.FieldVal = f
return q
}
func (q *prefixQuery) Searcher(i *indexImpl, explain bool) (search.Searcher, error) {
field := q.FieldVal
if q.FieldVal == "" {
field = i.m.DefaultField
}
return searchers.NewTermPrefixSearcher(i.i, q.Prefix, field, q.BoostVal, explain)
}
func (q *prefixQuery) Validate() error {
return nil
}