chore(go): add complex example in searchable encryptions (#1955)

Author: rishav-karanjit

Examples/runtimes/go/main.go

@@ -9,6 +9,7 @@ import (
 	"github.com/aws/aws-database-encryption-sdk-dynamodb/examples/keyring"
 	"github.com/aws/aws-database-encryption-sdk-dynamodb/examples/misc"
 	"github.com/aws/aws-database-encryption-sdk-dynamodb/examples/searchableencryption"
+	"github.com/aws/aws-database-encryption-sdk-dynamodb/examples/searchableencryption/complexexample"
 	"github.com/aws/aws-database-encryption-sdk-dynamodb/examples/utils"
 )
 
@@ -94,4 +95,9 @@ func main() {
 		branchKey2,
 		utils.TestKeystoreKmsKeyId(),
 		utils.TestKeystoreName())
+	complexexample.ComplexSearchableEncryptionExample(
+		utils.TestComplexDdbTableName(),
+		branchKey1,
+		utils.TestKeystoreKmsKeyId(),
+		utils.TestKeystoreName())
 }

Examples/runtimes/go/searchableencryption/complexexample/README.md

@@ -0,0 +1,23 @@
+# ComplexSearchableEncryptionExample
+
+This example demonstrates complex queries
+you can perform using beacons.
+The example data used is for demonstrative purposes only,
+and might not meet the distribution and correlation uniqueness
+recommendations for beacons.
+See our documentation for whether beacons are
+right for your particular data set:
+https://docs.aws.amazon.com/database-encryption-sdk/latest/devguide/searchable-encryption.html#are-beacons-right-for-me
+
+This example uses a more complex searchable encryption configuration than other examples.
+This is intended to demonstrate how to set up a more complicated searchable encryption configuration.
+This also walks through some example query expressions one can use to search their encrypted data.
+
+```
+.
+├── complexsearchableencryptionexample.go // Main entry point for example
+├── beaconconfig.go // Sets up beacons and searchable encryption configuration
+├── putrequests.go // PUT requests added to the DDB table
+├── queryrequests.go // QUERY requests executed on the DDB table
+└── README.md
+```