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queryx: added Get, GetRelease, Select and SelectRelease helper functions

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I have piggy backed with this change some docs update.

Fixes #41
This commit is contained in:
Michał Matczuk
2018-05-23 10:40:32 +02:00
parent 5739e64887
commit 6e4a05de42
4 changed files with 102 additions and 69 deletions
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35
README.md
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@@ -29,9 +29,9 @@ type Person struct {
Email []string
}
// Insert with query parameters bound from struct.
// Bind query parameters from a struct.
{
p := &Person{
p := Person{
"Patricia",
"Citizen",
[]string{"patricia.citzen@gocqlx_test.com"},
@@ -41,49 +41,42 @@ type Person struct {
Columns("first_name", "last_name", "email").
ToCql()
q := gocqlx.Query(session.Query(stmt), names).BindStruct(p)
if err := q.ExecRelease(); err != nil {
err := gocqlx.Query(session.Query(stmt), names).BindStruct(&p).ExecRelease()
if err != nil {
t.Fatal(err)
}
}
// Get the first result into a struct.
// Load the first result into a struct.
{
stmt, names := qb.Select("gocqlx_test.person").
Where(qb.Eq("first_name")).
ToCql()
var p Person
q := gocqlx.Query(session.Query(stmt), names).BindMap(qb.M{
"first_name": "Patricia",
})
var p Person
if err := gocqlx.Get(&p, q.Query); err != nil {
t.Fatal("get:", err)
if err := q.GetRelease(&p); err != nil {
t.Fatal(err)
}
t.Log(p)
// {Patricia Citizen [patricia.citzen@gocqlx_test.com patricia1.citzen@gocqlx_test.com]}
}
// Select, load all the results into a slice.
// Load all the results into a slice.
{
stmt, names := qb.Select("gocqlx_test.person").
Where(qb.In("first_name")).
ToCql()
var people []Person
q := gocqlx.Query(session.Query(stmt), names).BindMap(qb.M{
"first_name": []string{"Patricia", "Igy", "Ian"},
})
var people []Person
if err := gocqlx.Select(&people, q.Query); err != nil {
t.Fatal("select:", err)
if err := q.SelectRelease(&people); err != nil {
t.Fatal(err)
}
t.Log(people)
// [{Patricia Citizen [patricia.citzen@gocqlx_test.com patricia1.citzen@gocqlx_test.com]} {Igy Citizen [igy.citzen@gocqlx_test.com]} {Ian Citizen [ian.citzen@gocqlx_test.com]}]
}
```