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SEARCH command

This commit is contained in:
Josh Baker 2016-07-12 21:11:02 -06:00
parent 7bbe7adbd5
commit b08c686c64
10 changed files with 297 additions and 106 deletions
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48
controller/collection/collection.go
View File

@ -235,7 +235,7 @@ func (c *Collection) FieldArr() []string {
return arr
}
// Scan iterates though the collection. A cursor can be used for paging.
// Scan iterates though the collection ids. A cursor can be used for paging.
func (c *Collection) Scan(cursor uint64, stype ScanType, desc bool,
iterator func(id string, obj geojson.Object, fields []float64) bool,
) (ncursor uint64) {
@ -280,6 +280,50 @@ func (c *Collection) ScanRange(cursor uint64, stype ScanType, start, end string,
return i
}
// SearchValues iterates though the collection values. A cursor can be used for paging.
func (c *Collection) SearchValues(cursor uint64, stype ScanType, desc bool,
iterator func(id string, obj geojson.Object, fields []float64) bool,
) (ncursor uint64) {
var i uint64
var active = true
iter := func(item btree.Item) bool {
if i >= cursor {
iitm := item.(*itemT)
active = iterator(iitm.id, iitm.object, iitm.fields)
}
i++
return active
}
if desc {
c.values.Descend(iter)
} else {
c.values.Ascend(iter)
}
return i
}
// SearchValuesRange iterates though the collection values. A cursor can be used for paging.
func (c *Collection) SearchValuesRange(cursor uint64, stype ScanType, start, end string, desc bool,
iterator func(id string, obj geojson.Object, fields []float64) bool,
) (ncursor uint64) {
var i uint64
var active = true
iter := func(item btree.Item) bool {
if i >= cursor {
iitm := item.(*itemT)
active = iterator(iitm.id, iitm.object, iitm.fields)
}
i++
return active
}
if desc {
c.values.DescendRange(&itemT{object: geojson.String(start)}, &itemT{object: geojson.String(end)}, iter)
} else {
c.values.AscendRange(&itemT{object: geojson.String(start)}, &itemT{object: geojson.String(end)}, iter)
}
return i
}
// ScanGreaterOrEqual iterates though the collection starting with specified id. A cursor can be used for paging.
func (c *Collection) ScanGreaterOrEqual(id string, cursor uint64, stype ScanType, desc bool,
iterator func(id string, obj geojson.Object, fields []float64) bool,
@ -448,5 +492,3 @@ func (c *Collection) Intersects(cursor uint64, sparse uint8, obj geojson.Object,
return true
})
}
func (c *Collection) SearchValues(pivot string, desc bool, iterator func(id string, obj geojson.Object, fields []float64) bool) {
}

2
controller/controller.go
View File

@ -329,7 +329,7 @@ func (c *Controller) handleInputCommand(conn *server.Conn, msg *server.Message,
if c.config.ReadOnly {
return writeErr(errors.New("read only"))
}
case "get", "keys", "scan", "nearby", "within", "intersects", "hooks": //, "search":
case "get", "keys", "scan", "nearby", "within", "intersects", "hooks", "search":
// read operations
c.mu.RLock()
defer c.mu.RUnlock()

2
controller/hooks.go
View File

@ -231,7 +231,7 @@ func (c *Controller) cmdSetHook(msg *server.Message) (res string, d commandDetai
Message: cmsg,
}
var wr bytes.Buffer
hook.ScanWriter, err = c.newScanWriter(&wr, cmsg, s.key, s.output, s.precision, s.glob, s.limit, s.wheres, s.nofields)
hook.ScanWriter, err = c.newScanWriter(&wr, cmsg, s.key, s.output, s.precision, s.glob, false, s.limit, s.wheres, s.nofields)
if err != nil {
return "", d, err
}

2
controller/live.go
View File

@ -87,7 +87,7 @@ func (c *Controller) goLive(inerr error, conn net.Conn, rd *server.AnyReaderWrit
lb.key = s.key
lb.fence = &s
c.mu.RLock()
sw, err = c.newScanWriter(&wr, msg, s.key, s.output, s.precision, s.glob, s.limit, s.wheres, s.nofields)
sw, err = c.newScanWriter(&wr, msg, s.key, s.output, s.precision, s.glob, false, s.limit, s.wheres, s.nofields)
c.mu.RUnlock()
}
// everything below if for live SCAN, NEARBY, WITHIN, INTERSECTS

2
controller/scan.go
View File

@ -31,7 +31,7 @@ func (c *Controller) cmdScan(msg *server.Message) (res string, err error) {
if err != nil {
return "", err
}
sw, err := c.newScanWriter(wr, msg, s.key, s.output, s.precision, s.glob, s.limit, s.wheres, s.nofields)
sw, err := c.newScanWriter(wr, msg, s.key, s.output, s.precision, s.glob, false, s.limit, s.wheres, s.nofields)
if err != nil {
return "", err
}

14
controller/scanner.go
View File

@ -51,10 +51,13 @@ type scanWriter struct {
globSingle bool
fullFields bool
values []resp.Value
matchValues bool
}
func (c *Controller) newScanWriter(
wr *bytes.Buffer, msg *server.Message, key string, output outputT, precision uint64, globPattern string, limit uint64, wheres []whereT, nofields bool,
wr *bytes.Buffer, msg *server.Message, key string, output outputT,
precision uint64, globPattern string, matchValues bool,
limit uint64, wheres []whereT, nofields bool,
) (
*scanWriter, error,
) {
@ -78,6 +81,7 @@ func (c *Controller) newScanWriter(
nofields: nofields,
glob: globPattern,
limit: limit,
matchValues: matchValues,
}
if globPattern == "*" || globPattern == "" {
sw.globEverything = true
@ -242,7 +246,13 @@ func (sw *scanWriter) writeObject(id string, o geojson.Object, fields []float64,
}
keepGoing = false // return current object and stop iterating
} else {
ok, _ := glob.Match(sw.glob, id)
var val string
if sw.matchValues {
val = o.String()
} else {
val = id
}
ok, _ := glob.Match(sw.glob, val)
if !ok {
return true
}

137
controller/search.go
View File

@ -8,6 +8,7 @@ import (
"github.com/tidwall/resp"
"github.com/tidwall/tile38/controller/bing"
"github.com/tidwall/tile38/controller/collection"
"github.com/tidwall/tile38/controller/glob"
"github.com/tidwall/tile38/controller/server"
"github.com/tidwall/tile38/geojson"
@ -264,7 +265,7 @@ func (c *Controller) cmdNearby(msg *server.Message) (res string, err error) {
if s.fence {
return "", s
}
sw, err := c.newScanWriter(wr, msg, s.key, s.output, s.precision, s.glob, s.limit, s.wheres, s.nofields)
sw, err := c.newScanWriter(wr, msg, s.key, s.output, s.precision, s.glob, false, s.limit, s.wheres, s.nofields)
if err != nil {
return "", err
}
@ -305,7 +306,7 @@ func (c *Controller) cmdWithinOrIntersects(cmd string, msg *server.Message) (res
if s.fence {
return "", s
}
sw, err := c.newScanWriter(wr, msg, s.key, s.output, s.precision, s.glob, s.limit, s.wheres, s.nofields)
sw, err := c.newScanWriter(wr, msg, s.key, s.output, s.precision, s.glob, false, s.limit, s.wheres, s.nofields)
if err != nil {
return "", err
}
@ -336,95 +337,63 @@ func (c *Controller) cmdWithinOrIntersects(cmd string, msg *server.Message) (res
return string(wr.Bytes()), nil
}
func cmdSeachValuesArgs(vs []resp.Value) (s liveFenceSwitches, err error) {
if vs, s.searchScanBaseTokens, err = parseSearchScanBaseTokens("search", vs); err != nil {
return
}
if len(vs) != 0 {
err = errInvalidNumberOfArguments
return
}
return
}
func (c *Controller) cmdSearch(msg *server.Message) (res string, err error) {
start := time.Now()
vs := msg.Values[1:]
var ok bool
var key string
if vs, key, ok = tokenval(vs); !ok || key == "" {
err = errInvalidNumberOfArguments
return
}
col := c.getCol(key)
if col == nil {
err = errKeyNotFound
return
}
var tok string
var pivot string
var pivoton bool
var limiton bool
var limit int
var descon bool
var desc bool
for {
if vs, tok, ok = tokenval(vs); !ok || tok == "" {
break
}
switch strings.ToLower(tok) {
default:
err = errInvalidArgument(tok)
return
case "pivot":
if pivoton {
err = errInvalidArgument(tok)
return
}
pivoton = true
if vs, pivot, ok = tokenval(vs); !ok || pivot == "" {
err = errInvalidNumberOfArguments
return
}
case "limit":
if limiton {
err = errInvalidArgument(tok)
return
}
limiton = true
if vs, tok, ok = tokenval(vs); !ok || tok == "" {
err = errInvalidNumberOfArguments
return
}
n, err2 := strconv.ParseUint(tok, 10, 64)
if err2 != nil {
err = errInvalidArgument(tok)
return
}
limit = int(n)
case "asc", "desc":
if descon {
err = errInvalidArgument(tok)
return
}
descon = true
switch strings.ToLower(tok) {
case "asc":
desc = false
case "desc":
desc = true
}
}
}
println(pivoton, pivot)
println(limiton, limit)
println(descon, desc)
wr := &bytes.Buffer{}
if msg.OutputType == server.JSON {
wr.WriteString(`{"ok":true,"objects":[`)
s, err := cmdSeachValuesArgs(vs)
if err != nil {
return "", err
}
n := 0
col.SearchValues(pivot, desc, func(id string, obj geojson.Object, fields []float64) bool {
if msg.OutputType == server.JSON {
if n > 0 {
wr.WriteString(`,`)
sw, err := c.newScanWriter(wr, msg, s.key, s.output, s.precision, s.glob, true, s.limit, s.wheres, s.nofields)
if err != nil {
return "", err
}
wr.WriteString(`{"id":` + jsonString(id) + `,"object":` + obj.JSON() + `}`)
n++
}
return true
})
if msg.OutputType == server.JSON {
wr.WriteString(`],"elapsed":"` + time.Now().Sub(start).String() + "\"}")
wr.WriteString(`{"ok":true`)
}
sw.writeHead()
if sw.col != nil {
stype := collection.TypeAll
if sw.output == outputCount && len(sw.wheres) == 0 && sw.globEverything == true {
count := sw.col.Count(stype) - int(s.cursor)
if count < 0 {
count = 0
}
sw.count = uint64(count)
} else {
g := glob.Parse(sw.glob, s.desc)
if g.Limits[0] == "" && g.Limits[1] == "" {
s.cursor = sw.col.SearchValues(s.cursor, stype, s.desc,
func(id string, o geojson.Object, fields []float64) bool {
return sw.writeObject(id, o, fields, false)
},
)
} else {
s.cursor = sw.col.SearchValuesRange(
s.cursor, stype, g.Limits[0], g.Limits[1], s.desc,
func(id string, o geojson.Object, fields []float64) bool {
return sw.writeObject(id, o, fields, false)
},
)
}
}
}
sw.writeFoot(s.cursor)
if msg.OutputType == server.JSON {
wr.WriteString(`,"elapsed":"` + time.Now().Sub(start).String() + "\"}")
}
return string(wr.Bytes()), nil
}

6
controller/token.go
View File

@ -309,13 +309,13 @@ func parseSearchScanBaseTokens(cmd string, vs []resp.Value) (vsout []resp.Value,
}
// check to make sure that there aren't any conflicts
if cmd == "scan" {
if cmd == "scan" || cmd == "search" {
if ssparse != "" {
err = errors.New("SPARSE is not allowed for SCAN")
err = errors.New("SPARSE is not allowed for " + strings.ToUpper(cmd))
return
}
if t.fence {
err = errors.New("FENCE is not allowed for SCAN")
err = errors.New("FENCE is not allowed for " + strings.ToUpper(cmd))
return
}
} else {

85
core/commands.json
View File

@ -216,6 +216,91 @@
"since": "1.0.0",
"group": "keys"
},
"SEARCH": {
"summary": "Search for string values in a key",
"complexity": "O(N) where N is the number of values in the key",
"arguments":[
{
"name": "key",
"type": "string"
},
{
"command": "CURSOR",
"name": "start",
"type": "integer",
"optional": true
},
{
"command": "LIMIT",
"name": "count",
"type": "integer",
"optional": true
},
{
"command": "MATCH",
"name": "pattern",
"type": "pattern",
"optional": true
},
{
"name": "order",
"optional": true,
"enumargs": [
{
"name": "ASC"
},
{
"name": "DESC"
}
]
},
{
"command": "WHERE",
"name": ["field","min","max"],
"type": ["string","double","double"],
"optional": true,
"multiple": true
},
{
"command": "NOFIELDS",
"name": [],
"type": [],
"optional": true
},
{
"name": "type",
"optional": true,
"enumargs": [
{
"name": "COUNT"
},
{
"name": "IDS"
},
{
"name": "OBJECTS"
},
{
"name": "POINTS"
},
{
"name": "BOUNDS"
},
{
"name": "HASHES",
"arguments": [
{
"name": "precision",
"type": "integer"
}
]
}
]
}
],
"since": "1.0.0",
"group": "search"
},
"SCAN": {
"summary": "Incrementally iterate though a key",
"complexity": "O(N) where N is the number of ids in the key",

85
core/commands_gen.go
View File

@ -378,6 +378,91 @@ var commandsJSON = `{
"since": "1.0.0",
"group": "keys"
},
"SEARCH": {
"summary": "Search for string values in a key",
"complexity": "O(N) where N is the number of values in the key",
"arguments":[
{
"name": "key",
"type": "string"
},
{
"command": "CURSOR",
"name": "start",
"type": "integer",
"optional": true
},
{
"command": "LIMIT",
"name": "count",
"type": "integer",
"optional": true
},
{
"command": "MATCH",
"name": "pattern",
"type": "pattern",
"optional": true
},
{
"name": "order",
"optional": true,
"enumargs": [
{
"name": "ASC"
},
{
"name": "DESC"
}
]
},
{
"command": "WHERE",
"name": ["field","min","max"],
"type": ["string","double","double"],
"optional": true,
"multiple": true
},
{
"command": "NOFIELDS",
"name": [],
"type": [],
"optional": true
},
{
"name": "type",
"optional": true,
"enumargs": [
{
"name": "COUNT"
},
{
"name": "IDS"
},
{
"name": "OBJECTS"
},
{
"name": "POINTS"
},
{
"name": "BOUNDS"
},
{
"name": "HASHES",
"arguments": [
{
"name": "precision",
"type": "integer"
}
]
}
]
}
],
"since": "1.0.0",
"group": "search"
},
"SCAN": {
"summary": "Incrementally iterate though a key",
"complexity": "O(N) where N is the number of ids in the key",