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--- tutorial:transfer-api_storage [2021/10/30 10:14] – technici4n
+++ tutorial:transfer-api_storage [2021/10/30 10:25] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
-===== Fabric Transfer API: Understanding Storage<T> =====
+===== Fabric Transfer API: Understanding Storage<FluidVariant> =====
 //This article is part of a series on the Fabric Transfer API. [[tutorial:transfer-api|Link to the home page of the series]].//
@@ Line 92: / Line 92: @@
 		if (view.isResourceBlank()) continue; // This means that the view contains no resource, represented by FluidVariant.blank().
 		FluidVariant storedResource = view.getResource(); // Current resource
+		if (!filter.test(storedResource)) continue; // The filter rejected this resource, skip it.
 		// If you want to extract any amount <= view.getAmount(), do this.
@@ Line 101: / Line 102: @@
 			long extracted = view.extract(storedResource, amount, nestedTransaction);
 			if (extracted == amount) {
+				totalExtracted += amount;
 				nestedTransaction.commit(); // Validate the nestedTransaction: the outer one will have to committed as well to validate this change.
 			} else {
-				// If we do nothing, the extraction is cancelled immediately when nestedTransaction is closed.
+				// If we do nothing, the extraction is cancelled immediately when nestedTransaction is closed at the end of the try { ... } block.
 			}
 		}
@@ Line 110: / Line 112: @@
 }
 </code>
+==== Conclusion ====
+You should now be able to use ''Storage''s and ''StorageView''s. They can be a bit challenging in the beginning, but once you're used to them they are very easy to work with.
+You should also have a look at ''StorageUtil'': it already contains functions that perform common transfer operations. In particular, [[https://maven.fabricmc.net/docs/fabric-api-0.41.0+1.17/net/fabricmc/fabric/api/transfer/v1/storage/StorageUtil.html#move(net.fabricmc.fabric.api.transfer.v1.storage.Storage,net.fabricmc.fabric.api.transfer.v1.storage.Storage,java.util.function.Predicate,long,net.fabricmc.fabric.api.transfer.v1.transaction.TransactionContext)|move]] is very useful if you just want to move resources between two storages.