Add protected getters for delete and collection properties. Fixes spring-projects#3973

Author: Tolga Okur

spring-batch-infrastructure/src/main/java/org/springframework/batch/item/data/MongoItemWriter.java

@@ -84,6 +84,16 @@ public void setDelete(boolean delete) {
 		this.delete = delete;
 	}
 
+	/**
+	 * Indicates if the items being passed to the writer are to be saved or removed from
+	 * the data store. If is false (default), the items will be saved. If is true, the
+	 * items will be removed.
+	 * @return removal indicator
+	 */
+	protected boolean isDelete() {
+		return delete;
+	}
+
 	/**
 	 * Set the {@link MongoOperations} to be used to save items to be written.
 	 * @param template the template implementation to be used.
@@ -109,6 +119,14 @@ public void setCollection(String collection) {
 		this.collection = collection;
 	}
 
+	/**
+	 * Get the name of the Mongo collection to be written to.
+	 * @return the name of the collection.
+	 */
+	protected String getCollection() {
+		return collection;
+	}
+
 	/**
 	 * If a transaction is active, buffer items to be written just before commit.
 	 * Otherwise write items using the provided template.