Add javadoc for save operations.

Closes #1495.

src/main/java/org/springframework/data/couchbase/core/CouchbaseOperations.java

@@ -54,8 +54,28 @@ public interface CouchbaseOperations extends FluentCouchbaseOperations {
 	 */
 	QueryScanConsistency getConsistency();
 
+	/**
+	 * Save the entity to couchbase.<br>
+	 * If there is no version property on the entity class, and this is in a transaction, use insert. <br>
+	 * If there is no version property on the entity class, and this is not in a transaction, use upsert. <br>
+	 * If there is a version property on the entity class, and it is non-zero, then this is an existing document, use
+	 * replace.<br>
+	 * Otherwise, there is a version property for the entity, but it is zero or null, use insert. <br>
+	 *
+	 * @param entity the entity to save in couchbase
+	 * @param scopeAndCollection for use by repositories only. these are varargs for the scope and collection.
+	 * @param <T> the entity class
+	 * @return
+	 */
 	<T> T save(T entity, String... scopeAndCollection);
 
+	/**
+	 * Returns the count of documents found by the query.
+	 * @param query
+	 * @param domainType
+	 * @param <T>
+	 * @return
+	 */
 	<T> Long count(Query query, Class<T> domainType);
 
 }

src/main/java/org/springframework/data/couchbase/core/ReactiveCouchbaseOperations.java

@@ -52,9 +52,29 @@ public interface ReactiveCouchbaseOperations extends ReactiveFluentCouchbaseOper
 	 */
 	CouchbaseClientFactory getCouchbaseClientFactory();
 
+	/**
+	 * Save the entity to couchbase.<br>
+	 * If there is no version property on the entity class, and this is in a transaction, use insert. <br>
+	 * If there is no version property on the entity class, and this is not in a transaction, use upsert. <br>
+	 * If there is a version property on the entity class, and it is non-zero, then this is an existing document, use
+	 * replace.<br>
+	 * Otherwise, there is a version property for the entity, but it is zero or null, use insert. <br>
+	 *
+	 * @param entity the entity to save in couchbase
+	 * @param scopeAndCollection for use by repositories only. these are varargs for the scope and collection.
+	 * @param <T> the entity class
+	 * @return
+	 */
 	<T> Mono<T> save(T entity, String... scopeAndCollection);
 
-	<T> Mono<Long> count(Query query, Class<T> personClass);
+	/**
+	 * Returns the count of documents found by the query.
+	 * @param query
+	 * @param domainType
+	 * @param <T>
+	 * @return
+	 */
+	<T> Mono<Long> count(Query query, Class<T> domainType);
 
 	/**
 	 * @return the default consistency to use for queries

src/main/java/org/springframework/data/couchbase/core/ReactiveCouchbaseTemplate.java

@@ -72,10 +72,7 @@ public class ReactiveCouchbaseTemplate implements ReactiveCouchbaseOperations, A
 		this.scanConsistency = scanConsistency;
 	}
 
-	public <T> Mono<T> save(T entity) {
-		return save(entity, null, null);
-	}
-
+	@Override
 	public <T> Mono<T> save(T entity, String... scopeAndCollection) {
 		Assert.notNull(entity, "Entity must not be null!");
 		String scope = scopeAndCollection.length > 0 ? scopeAndCollection[0] : null;