JSONB OSON Adapters (#127)

Signed-off-by: Anders Swanson <anders.swanson@oracle.com>

Author: anders-swanson

database/starters/oracle-spring-boot-starter-json-collections/src/main/java/com/oracle/spring/json/jsonb/JSONB.java

@@ -4,6 +4,7 @@
 
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
+import java.io.InputStream;
 import java.nio.ByteBuffer;
 
 import jakarta.json.stream.JsonGenerator;
@@ -40,4 +41,14 @@ public JsonParser toJsonParser(Object o) {
     public <T> T fromOSON(JsonParser parser, Class<T> clazz) {
         return jsonb.fromJson(parser, clazz);
     }
+
+    public <T> T fromOSON(InputStream inputStream, Class<T> clazz) {
+        JsonParser jsonParser = oracleJsonFactory.createJsonBinaryParser(inputStream).wrap(JsonParser.class);
+        return jsonb.fromJson(jsonParser, clazz);
+    }
+
+    public <T> T fromOSON(ByteBuffer byteBuffer, Class<T> clazz) {
+        JsonParser jsonParser = oracleJsonFactory.createJsonBinaryParser(byteBuffer).wrap(JsonParser.class);
+        return jsonb.fromJson(jsonParser, clazz);
+    }
 }

database/starters/oracle-spring-boot-starter-json-collections/src/test/java/com/oracle/spring/json/jsonb/JSONBTest.java

@@ -2,6 +2,10 @@
 // Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl.
 package com.oracle.spring.json.jsonb;
 
+import java.io.ByteArrayInputStream;
+import java.io.InputStream;
+import java.nio.ByteBuffer;
+
 import com.oracle.spring.json.test.Student;
 import com.oracle.spring.json.test.StudentDetails;
 import jakarta.json.bind.JsonbBuilder;
@@ -35,4 +39,24 @@ void parserToObject() {
         assertThat(student).isNotNull();
         assertThat(student).isEqualTo(s);
     }
+
+    @Test
+    void inputStreamToObject() {
+        byte[] oson = jsonb.toOSON(s);
+        InputStream is = new ByteArrayInputStream(oson);
+
+        Student student = jsonb.fromOSON(is, Student.class);
+        assertThat(student).isNotNull();
+        assertThat(student).isEqualTo(s);
+    }
+
+    @Test
+    void byteBufferToOjbect() {
+        byte[] oson = jsonb.toOSON(s);
+        ByteBuffer buf = ByteBuffer.wrap(oson);
+
+        Student student = jsonb.fromOSON(buf, Student.class);
+        assertThat(student).isNotNull();
+        assertThat(student).isEqualTo(s);
+    }
 }