Documentation
¶
Index ¶
Constants ¶
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const ( // NumericBucketTypeBucketWidth is a NumericBucketType NumericBucketTypeBucketWidth = "bucketWidth" // NumericBucketTypeLogBase is a NumericBucketType NumericBucketTypeLogBase = "logBase" // NumericBucketTypeManualPartitions is a NumericBucketType NumericBucketTypeManualPartitions = "manualPartitions" )
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const ( // Timefilter is function type Timefilter funcType = iota // TimeNow is function type TimeNow // Timebucket is function type Timebucket // Numericbucket is function type Numericbucket )
Variables ¶
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var AggregateFunctions = map[string]bool{ "count": true, "sum": true, "avg": true, "max": true, "min": true, "hll": true, }
AggregateFunctions is a set of call names that are aggregate functions
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var UdfTable = map[string]funcDef{ "aql_time_filter": {Timefilter, 4, "timeFilter", []string{"column", "from", "to", "timezone"}}, "aql_now": {TimeNow, 2, "now", []string{"column", "now"}}, "aql_time_bucket_minute": {Timebucket, 3, "minute", []string{"column", "timeunit", "timezone"}}, "aql_time_bucket_minutes": {Timebucket, 3, "minutes", []string{"column", "timeunit", "timezone"}}, "aql_time_bucket_hour": {Timebucket, 3, "hour", []string{"column", "timeunit", "timezone"}}, "aql_time_bucket_hours": {Timebucket, 3, "hours", []string{"column", "timeunit", "timezone"}}, "aql_time_bucket_day": {Timebucket, 3, "day", []string{"column", "timeunit", "timezone"}}, "aql_time_bucket_week": {Timebucket, 3, "week", []string{"column", "timeunit", "timezone"}}, "aql_time_bucket_month": {Timebucket, 3, "month", []string{"column", "timeunit", "timezone"}}, "aql_time_bucket_quarter": {Timebucket, 3, "quarter", []string{"column", "timeunit", "timezone"}}, "aql_time_bucket_year": {Timebucket, 3, "year", []string{"column", "timeunit", "timezone"}}, "aql_time_bucket_time_of_day": {Timebucket, 3, "time of day", []string{"column", "timeunit", "timezone"}}, "aql_time_bucket_minutes_of_day": {Timebucket, 3, "minutes of day", []string{"column", "timeunit", "timezone"}}, "aql_time_bucket_hour_of_day": {Timebucket, 3, "hour of day", []string{"column", "timeunit", "timezone"}}, "aql_time_bucket_hour_of_week": {Timebucket, 3, "hour of week", []string{"column", "timeunit", "timezone"}}, "aql_time_bucket_day_of_week": {Timebucket, 3, "day of week", []string{"column", "timeunit", "timezone"}}, "aql_time_bucket_day_of_month": {Timebucket, 3, "day of month", []string{"column", "timeunit", "timezone"}}, "aql_time_bucket_day_of_year": {Timebucket, 3, "day of year", []string{"column", "timeunit", "timezone"}}, "aql_time_bucket_month_of_year": {Timebucket, 3, "month of year", []string{"column", "timeunit", "timezone"}}, "aql_time_bucket_quarter_of_year": {Timebucket, 3, "quarter of year", []string{"column", "timeunit", "timezone"}}, "aql_numeric_bucket_bucket_width": {Numericbucket, 2, "bucketWidth", []string{"column", "expression"}}, "aql_numeric_bucket_logbase": {Numericbucket, 2, "logBase", []string{"column", "expression"}}, "aql_numeric_bucket_mannual_partitions": {Numericbucket, 2, "mannualPartitions", []string{"column", "expression"}}, }
UdfTable is function registration table. key: function name; value: function definition.
Functions ¶
func GetSubstring ¶
GetSubstring returns substring embeded in a node's value (substring)
func RequireNonNull ¶
func RequireNonNull(pointer interface{}, errMsg string)
RequireNonNull validate a point is not null
Types ¶
type CaseChangingStream ¶
type CaseChangingStream struct {
antlr.CharStream
// contains filtered or unexported fields
}
CaseChangingStream wraps an existing CharStream, but upper cases, or lower cases the input before it is tokenized.
func NewCaseChangingStream ¶
func NewCaseChangingStream(in antlr.CharStream, upper bool) *CaseChangingStream
NewCaseChangingStream returns a new CaseChangingStream that forces all tokens read from the underlying stream to be either upper case or lower case based on the upper argument.
func (*CaseChangingStream) LA ¶
func (is *CaseChangingStream) LA(offset int) int
LA gets the value of the symbol at offset from the current position from the underlying CharStream and converts it to either upper case or lower case.
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