Add support for blob types in primary key

CHANGELOG.md

@@ -2,6 +2,11 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## v2.0.2 - 2019-06-28
+
+### Fixed
+ - Fix blob types in primary keys not being comparable
+
 ## v2.0.1 - 2019-06-28
 
 ### Changed

README.md

@@ -6,7 +6,7 @@ gocassa
 
 Gocassa is a high-level library on top of [gocql](https://github.com/gocql/gocql).
 
-Current version: v2.0.0
+Current version: v2.0.2
 
 Compared to gocql it provides query building, adds data binding, and provides easy-to-use "recipe" tables for common query use-cases. Unlike [cqlc](https://github.com/relops/cqlc), it does not use code generation.
 

relation.go

@@ -56,6 +56,16 @@ func convertToPrimitive(i interface{}) interface{} {
 		return v.UnixNano()
 	case time.Duration:
 		return v.Nanoseconds()
+	case []byte:
+		// This case works as strings in Go are simply defined as the following:
+		// "A string value is a (possibly empty) sequence of bytes" (from the go lang spec)
+		// and
+		// "Converting a slice of bytes to a string type yields a string whose successive bytes are the elements of the slice."
+		// Finally:
+		// "String values are comparable and ordered, lexically byte-wise."
+		// We mostly want this to allow comparisons of blob types in the primary key of a table,
+		// since []byte are not `==` comparable in go, but strings are
+		return string(v)
 	default:
 		return i
 	}

relation_test.go

@@ -18,6 +18,7 @@ func TestAnyEquals(t *testing.T) {
 		{time.Minute * 2, makeInterfaceArray(time.Second * 120)},
 		{testTime1, makeInterfaceArray(testTime2)},
 		{1950, makeInterfaceArray(1950)},
+		{[]byte{0x00, 0xFF, 0x01, 0x99, 0xEA}, makeInterfaceArray("\x00\xFF\x01\x99\xEA")},
 	}
 
 	for _, tc := range testCases {