github.com/weaviate/weaviate@v1.24.6/usecases/traverser/target_vector_param_helper.go (about)

     1  //                           _       _
     2  // __      _____  __ ___   ___  __ _| |_ ___
     3  // \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
     4  //  \ V  V /  __/ (_| |\ V /| | (_| | ||  __/
     5  //   \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
     6  //
     7  //  Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
     8  //
     9  //  CONTACT: hello@weaviate.io
    10  //
    11  
    12  package traverser
    13  
    14  import (
    15  	"fmt"
    16  
    17  	"github.com/weaviate/weaviate/entities/dto"
    18  	"github.com/weaviate/weaviate/entities/modulecapabilities"
    19  	"github.com/weaviate/weaviate/entities/schema"
    20  )
    21  
    22  type TargetVectorParamHelper struct{}
    23  
    24  func NewTargetParamHelper() *TargetVectorParamHelper {
    25  	return &TargetVectorParamHelper{}
    26  }
    27  
    28  func (t *TargetVectorParamHelper) GetTargetVectorOrDefault(sch schema.Schema, className, targetVector string) (string, error) {
    29  	if targetVector == "" {
    30  		class := sch.FindClassByName(schema.ClassName(className))
    31  
    32  		if len(class.VectorConfig) > 1 {
    33  			return "", fmt.Errorf("multiple vectorizers configuration found, please specify target vector name")
    34  		}
    35  
    36  		if len(class.VectorConfig) == 1 {
    37  			for name := range class.VectorConfig {
    38  				return name, nil
    39  			}
    40  		}
    41  	}
    42  	return targetVector, nil
    43  }
    44  
    45  func (t *TargetVectorParamHelper) GetTargetVectorFromParams(params dto.GetParams) string {
    46  	if params.NearObject != nil && len(params.NearObject.TargetVectors) == 1 {
    47  		return params.NearObject.TargetVectors[0]
    48  	}
    49  	if params.NearVector != nil && len(params.NearVector.TargetVectors) == 1 {
    50  		return params.NearVector.TargetVectors[0]
    51  	}
    52  	if params.HybridSearch != nil && len(params.HybridSearch.TargetVectors) == 1 {
    53  		return params.HybridSearch.TargetVectors[0]
    54  	}
    55  	if len(params.ModuleParams) > 0 {
    56  		for _, moduleParam := range params.ModuleParams {
    57  			if nearParam, ok := moduleParam.(modulecapabilities.NearParam); ok && len(nearParam.GetTargetVectors()) == 1 {
    58  				return nearParam.GetTargetVectors()[0]
    59  			}
    60  		}
    61  	}
    62  	return ""
    63  }