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03c46e686f
issue: https://github.com/milvus-io/milvus/issues/43934 --------- Signed-off-by: SpadeA <tangchenjie1210@gmail.com>
75 lines
2.4 KiB
Go
75 lines
2.4 KiB
Go
package indexparamcheck
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import (
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"fmt"
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"strconv"
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"strings"
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"github.com/milvus-io/milvus-proto/go-api/v2/schemapb"
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"github.com/milvus-io/milvus/pkg/v2/common"
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"github.com/milvus-io/milvus/pkg/v2/util/merr"
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"github.com/milvus-io/milvus/pkg/v2/util/typeutil"
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)
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const (
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MinGramKey = "min_gram"
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MaxGramKey = "max_gram"
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)
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type NgramIndexChecker struct {
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scalarIndexChecker
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}
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func newNgramIndexChecker() *NgramIndexChecker {
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return &NgramIndexChecker{}
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}
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func (c *NgramIndexChecker) CheckTrain(dataType schemapb.DataType, elementType schemapb.DataType, params map[string]string) error {
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if dataType != schemapb.DataType_VarChar && dataType != schemapb.DataType_JSON {
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return merr.WrapErrParameterInvalidMsg("Ngram index can only be created on VARCHAR or JSON field")
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}
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// For JSON field with ngram index, json_cast_type must be VARCHAR
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if dataType == schemapb.DataType_JSON {
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castType, exists := params[common.JSONCastTypeKey]
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if !exists {
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return merr.WrapErrParameterInvalidMsg("JSON field with ngram index must specify json_cast_type")
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}
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// Normalize cast type to uppercase for comparison
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castType = strings.ToUpper(strings.TrimSpace(castType))
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if castType != "VARCHAR" {
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return merr.WrapErrParameterInvalidMsg("JSON field with ngram index only supports VARCHAR cast type, got: %s", castType)
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}
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}
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minGramStr, minGramExist := params[MinGramKey]
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maxGramStr, maxGramExist := params[MaxGramKey]
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if !minGramExist || !maxGramExist {
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return merr.WrapErrParameterInvalidMsg("Ngram index must specify both min_gram and max_gram")
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}
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minGram, err := strconv.Atoi(minGramStr)
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if err != nil {
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return merr.WrapErrParameterInvalidMsg("min_gram for Ngram index must be an integer, got: %s", minGramStr)
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}
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maxGram, err := strconv.Atoi(maxGramStr)
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if err != nil {
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return merr.WrapErrParameterInvalidMsg("max_gram for Ngram index must be an integer, got: %s", maxGramStr)
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}
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if minGram <= 0 || maxGram <= 0 || minGram > maxGram {
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return merr.WrapErrParameterInvalidMsg("invalid min_gram or max_gram value for Ngram index, min_gram: %d, max_gram: %d", minGram, maxGram)
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}
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return c.scalarIndexChecker.CheckTrain(dataType, elementType, params)
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}
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func (c *NgramIndexChecker) CheckValidDataType(indexType IndexType, field *schemapb.FieldSchema) error {
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dType := field.GetDataType()
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if !typeutil.IsStringType(dType) && dType != schemapb.DataType_JSON {
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return fmt.Errorf("ngram index can only be created on VARCHAR or JSON field")
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}
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return nil
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}
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