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bleve/search/query_boolean.go
2014-04-25 10:45:23 -06:00

42 lines
1.5 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 search
import (
"fmt"
"github.com/couchbaselabs/bleve/index"
)
type TermBooleanQuery struct {
Must *TermConjunctionQuery `json:"must,omitempty"`
MustNot *TermDisjunctionQuery `json:"must_not,omitempty"`
Should *TermDisjunctionQuery `json:"should,omitempty"`
BoostVal float64 `json:"boost,omitempty"`
Explain bool `json:"explain,omitempty"`
}
func (q *TermBooleanQuery) Boost() float64 {
return q.BoostVal
}
func (q *TermBooleanQuery) Searcher(index index.Index) (Searcher, error) {
return NewTermBooleanSearcher(index, q)
}
func (q *TermBooleanQuery) Validate() error {
if q.Must == nil && q.Should == nil {
return fmt.Errorf("Boolean query must contain at least one MUST or SHOULD clause")
}
if q.Must != nil && len(q.Must.Terms) == 0 && q.Should != nil && len(q.Should.Terms) == 0 {
return fmt.Errorf("Boolean query must contain at least one MUST or SHOULD clause")
}
return nil
}