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Add postgres json literal #161

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merged 2 commits into from
Jun 6, 2022
Merged

Add postgres json literal #161

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0425e88
add postgres json literal
wexder Jun 4, 2022
11b0a68
Better json func, and tests
wexder Jun 4, 2022
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10 changes: 10 additions & 0 deletions postgres/literal.go
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Original file line number Diff line number Diff line change
Expand Up @@ -65,6 +65,16 @@ func String(value string) StringExpression {
return CAST(jet.String(value)).AS_TEXT()
}

// Json creates new json literal expression
func Json(value interface{}) StringExpression {
switch value.(type) {
case string, []byte:
default:
panic("Bytea parameter value has to be of the type string or []byte")
}
return StringExp(CAST(jet.Literal(value)).AS("json"))
}

// UUID is a helper function to create string literal expression from uuid object
// value can be any uuid type with a String method
var UUID = jet.UUID
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5 changes: 5 additions & 0 deletions postgres/literal_test.go
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Expand Up @@ -67,6 +67,11 @@ func TestBytea(t *testing.T) {
assertSerialize(t, Bytea([]byte("Some byte array")), `$1::bytea`, []byte("Some byte array"))
}

func TestJson(t *testing.T) {
assertSerialize(t, Json("{\"key\": \"value\"}"), `$1::json`, "{\"key\": \"value\"}")
assertSerialize(t, Json([]byte("{\"key\": \"value\"}")), `$1::json`, []byte("{\"key\": \"value\"}"))
}

func TestDate(t *testing.T) {
assertSerialize(t, Date(2014, time.January, 2), `$1::date`, "2014-01-02")
assertSerialize(t, DateT(time.Now()), `$1::date`)
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