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utils.go
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utils.go
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package badgerquery
import (
"github.com/google/orderedcode"
)
var (
metaSeqKey = mustEncodeOrderedCode(nil, "meta", "seq")
tableConfigKeyBase = mustEncodeOrderedCode(nil, "meta", "table", "config")
indexConfigKeyBase = mustEncodeOrderedCode(nil, "meta", "table", "index", "config")
indexSeqKeyBase = mustEncodeOrderedCode(nil, "meta", "table", "index", "seq")
)
func mustEncodeOrderedCode(buf []byte, items ...interface{}) []byte {
reply, err := orderedcode.Append(buf, items...)
if err != nil {
panic("MustEncodeOrderedCode: " + err.Error())
}
return reply
}
func DecodeIndexData(buf []byte, items ...interface{}) error {
var (
indexID uint64
)
remain, err := orderedcode.Parse(string(buf), &indexID)
if err != nil {
return err
}
_, err = orderedcode.Parse(remain, items)
return err
}
func getMetaSeqKey() []byte {
return metaSeqKey
}
func getTableConfigKey(tableName string) []byte {
return mustEncodeOrderedCode(tableConfigKeyBase, tableName)
}
func getIndexConfigKey(tableName string, indexName string) []byte {
return mustEncodeOrderedCode(indexConfigKeyBase, tableName, indexName)
}
func getIndexSeqKey(tableName string, indexName string) []byte {
return mustEncodeOrderedCode(indexSeqKeyBase, tableName, indexName)
}
func getItemDataKeyBase(tableDataID uint64) []byte {
return mustEncodeOrderedCode(nil, tableDataID)
}
func getItemDataKey(tableDataID uint64, itemKey interface{}) []byte {
return mustEncodeOrderedCode(nil, tableDataID, itemKey)
}
func getItemIndexKeyBase(tableIndexID uint64) []byte {
return mustEncodeOrderedCode(nil, tableIndexID)
}
func getItemIndexKey(tableIndexID uint64, itemKey interface{}) []byte {
return mustEncodeOrderedCode(nil, tableIndexID, itemKey)
}
func getIndexDataKeyBase(indexID uint64) []byte {
return mustEncodeOrderedCode(nil, indexID)
}
func getIndexDataKey(indexID uint64, indexData []interface{}, seq uint64) []byte {
reply := mustEncodeOrderedCode(nil, indexID)
reply = mustEncodeOrderedCode(reply, indexData...)
reply = mustEncodeOrderedCode(reply, seq)
return reply
}
func getIndexDataPrefix(indexID uint64, indexData []interface{}) []byte {
reply := mustEncodeOrderedCode(nil, indexID)
reply = mustEncodeOrderedCode(reply, indexData...)
return reply
}