Fix id type on SchemaRegistrationResponse

Fixes #739

Use primitive type in `SchemaRegistryClient`

spring-cloud-stream-schema/src/main/java/org/springframework/cloud/stream/schema/SchemaRegistrationResponse.java

@@ -21,15 +21,15 @@ package org.springframework.cloud.stream.schema;
  */
 public class SchemaRegistrationResponse {
 
-	private long id;
+	private int id;
 
 	private SchemaReference schemaReference;
 
-	public long getId() {
+	public int getId() {
 		return this.id;
 	}
 
-	public void setId(long id) {
+	public void setId(int id) {
 		this.id = id;
 	}
 

spring-cloud-stream-schema/src/main/java/org/springframework/cloud/stream/schema/client/ConfluentSchemaRegistryClient.java

@@ -94,7 +94,7 @@ public class ConfluentSchemaRegistryClient implements SchemaRegistryClient {
 	}
 
 	@Override
-	public String fetch(Integer id) {
+	public String fetch(int id) {
 		String path = String.format("/schemas/ids/%d", id);
 		HttpHeaders headers = new HttpHeaders();
 		headers.put("Accept",

spring-cloud-stream-schema/src/main/java/org/springframework/cloud/stream/schema/client/DefaultSchemaRegistryClient.java

@@ -76,7 +76,7 @@ public class DefaultSchemaRegistryClient implements SchemaRegistryClient {
 	}
 
 	@Override
-	public String fetch(Integer id) {
+	public String fetch(int id) {
 		ResponseEntity<Map> responseEntity = this.template.getForEntity(
 				this.endpoint + "/schemas/" + id, Map.class);
 		if (!responseEntity.getStatusCode().is2xxSuccessful()) {

spring-cloud-stream-schema/src/main/java/org/springframework/cloud/stream/schema/client/SchemaRegistryClient.java

@@ -45,6 +45,6 @@ public interface SchemaRegistryClient {
 	 * @param id the id of the target schema.
 	 * @return
 	 */
-	String fetch(Integer id);
+	String fetch(int id);
 
 }

spring-cloud-stream-schema/src/test/java/org/springframework/cloud/schema/avro/StubSchemaRegistryClient.java

@@ -81,7 +81,7 @@ public class StubSchemaRegistryClient implements SchemaRegistryClient {
 	}
 
 	@Override
-	public String fetch(Integer id) {
+	public String fetch(int id) {
 		return this.schemasById.get(id);
 	}