Update mongo driver

Gopkg.toml

@@ -50,8 +50,8 @@
   version = "1.10.0"
 
 [[constraint]]
-  name = "github.com/mongodb/mongo-go-driver"
-  version = "0.3.0"
+  name = "go.mongodb.org/mongo-driver"
+  version = "1.0.0"
 
 [[constraint]]
   name = "gopkg.in/yaml.v2"

README.md

@@ -250,7 +250,7 @@ SELECT name, city, state FROM users WHERE (name IN (?,?) AND grade NOT BETWEEN ?
 
 ##### mongo.Walk
 
-The `walkers` `mongo`  package include a helper mongo.Walk ([code](/pkg/walkers/mongo/walk.go), [doc](https://godoc.org/github.com/yaacov/tree-search-language/pkg/walkers/mongo#Walk)) method that adds search bson filter to [mongo-go-driver](https://github.com/mongodb/mongo-go-driver):
+The `walkers` `mongo`  package include a helper mongo.Walk ([code](/pkg/walkers/mongo/walk.go), [doc](https://godoc.org/github.com/yaacov/tree-search-language/pkg/walkers/mongo#Walk)) method that adds search bson filter to [mongo-go-driver](https://go.mongodb.org/mongo-driver):
 
 ``` go
 import (

cmd/tsl_mongo/main.go

@@ -23,11 +23,11 @@ import (
 	"fmt"
 	"log"
 
-	"github.com/mongodb/mongo-go-driver/bson"
-	"github.com/mongodb/mongo-go-driver/mongo"
 	"github.com/yaacov/tree-search-language/pkg/tsl"
 	"github.com/yaacov/tree-search-language/pkg/walkers/ident"
 	walker "github.com/yaacov/tree-search-language/pkg/walkers/mongo"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/mongo"
 
 	"github.com/yaacov/tree-search-language/cmd/model"
 )

cmd/tsl_mongo/model.go

@@ -18,13 +18,14 @@ package main
 import (
 	"context"
 
-	"github.com/mongodb/mongo-go-driver/mongo"
+	"go.mongodb.org/mongo-driver/mongo"
+	"go.mongodb.org/mongo-driver/mongo/options"
 
 	"github.com/yaacov/tree-search-language/cmd/model"
 )
 
 func connect(ctx context.Context, url string) (client *mongo.Client, err error) {
-	client, err = mongo.NewClient(url)
+	client, err = mongo.NewClient(options.Client().ApplyURI(url))
 	if err != nil {
 		return
 	}

go.mod

@@ -18,12 +18,12 @@ require (
 	github.com/mattn/go-colorable v0.1.0 // indirect
 	github.com/mattn/go-isatty v0.0.4 // indirect
 	github.com/mattn/go-sqlite3 v1.10.0
-	github.com/mongodb/mongo-go-driver v0.3.0
 	github.com/stretchr/objx v0.1.1 // indirect
 	github.com/stretchr/testify v1.3.0 // indirect
 	github.com/tidwall/pretty v0.0.0-20180105212114-65a9db5fad51 // indirect
 	github.com/xdg/scram v0.0.0-20180814205039-7eeb5667e42c // indirect
 	github.com/xdg/stringprep v0.0.0-20180714160509-73f8eece6fdc // indirect
+	go.mongodb.org/mongo-driver v1.0.0
 	golang.org/x/crypto v0.0.0-20190211182817-74369b46fc67 // indirect
 	golang.org/x/net v0.0.0-20190206173232-65e2d4e15006 // indirect
 	golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4 // indirect

pkg/walkers/README.md

@@ -12,7 +12,7 @@ The `sql` package include a helper `sql.Walk` ([code](/pkg/walkers/sql/walk.go),
 
 ##### mongo
 
-The `mongo` package include a helper `mongo.Walk` ([code](/pkg/walkers/mongo/walk.go), [doc](https://godoc.org/github.com/yaacov/tree-search-language/pkg/walkers/mongo#Walk)) method that adds search `bson` filter to [mongo-go-driver](https://github.com/mongodb/mongo-go-driver).
+The `mongo` package include a helper `mongo.Walk` ([code](/pkg/walkers/mongo/walk.go), [doc](https://godoc.org/github.com/yaacov/tree-search-language/pkg/walkers/mongo#Walk)) method that adds search `bson` filter to [mongo-go-driver](https://go.mongodb.org/mongo-driver).
 
 ##### graphviz
 

pkg/walkers/doc.go

@@ -41,5 +41,5 @@
 //
 // squirrel: https://github.com/Masterminds/squirrel
 //
-// mongo-go-driver: https://github.com/mongodb/mongo-go-driver
+// mongo-go-driver: https://go.mongodb.org/mongo-driver
 package walkers

pkg/walkers/mongo/walk.go

@@ -17,8 +17,8 @@
 package mongo
 
 import (
-	"github.com/mongodb/mongo-go-driver/bson"
-	"github.com/mongodb/mongo-go-driver/bson/primitive"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/bson/primitive"
 
 	"github.com/yaacov/tree-search-language/pkg/tsl"
 )
@@ -74,7 +74,7 @@ func bsonFromArray(a interface{}) (values []interface{}, err error) {
 //  // Run query
 //  cur, _ := collection.Find(ctx, filter)
 //
-// mongo-go-driver: https://github.com/mongodb/mongo-go-driver
+// mongo-go-driver: https://go.mongodb.org/mongo-driver
 //
 func Walk(n tsl.Node) (b bson.D, err error) {
 	var values []interface{}

pkg/walkers/semantics/walk.go

@@ -27,6 +27,8 @@ import (
 )
 
 // EvalFunc is a key evaluation function type.
+//
+// The function gets a key (string), and returns the value (interface{}) stored in the data document for that key.
 type EvalFunc = func(string) (interface{}, bool)
 
 // Walk travel the TSL tree and implements search semantics.
@@ -44,6 +46,11 @@ type EvalFunc = func(string) (interface{}, bool)
 //
 //  	// evalFactory creates an evaluation function for a data record.
 //  	func evalFactory(r map[string]string) semantics.EvalFunc {
+//  		// Returns:
+//  		// A function (semantics.EvalFunc) that gets a `key` for a record and returns
+//  		// the value of the document for that key.
+//  		// If no value can be found for this `key` in our record, it will return
+//  		// ok = false, if value is found it will return ok = true.
 //  		return func(k string) (interface{}, bool) {
 //  			v, ok := r[k]
 //  			return v, ok