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PaperMC/Unmapped-Spigot-Server-Patches/0671-Merchant-getRecipes-should-return-an-immutable-list.patch

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Merchant#getRecipes should return an immutable list (#5183) This fixes a confusing issue where doing 'merchant.setRecipes(merchant.getRecipes());' would clear the merchants recipes, as the implementation of getRecipes is guavas Lists.transform wrapped in Collections.unmodifiableList, and the implementation of setRecipes clears the backing list before adding the elements of the provided list to the backing list. The javadoc for the getRecipes method says 'an immutable list of trades', so this patch makes the javadoc correct.
2021-02-11 00:06:34 +01:00
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: jmp <jasonpenilla2@me.com>
Date: Wed, 10 Feb 2021 14:53:36 -0800
Subject: [PATCH] Merchant#getRecipes should return an immutable list
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMerchant.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMerchant.java
Updated Upstream (CraftBukkit/Spigot) Doesn't compile yet. CraftBukkit Changes: 90d6905b Repackage NMS 69cf961d Repackage patches Spigot Changes: 79d53c28 Repackage NMS
2021-03-16 08:19:45 +01:00
index 00d43e4a77ed03bc9672cbaccad50b48aed0fb93..3c66d9217eb0b60595a59e2f296de332095d4a4c 100644
Merchant#getRecipes should return an immutable list (#5183) This fixes a confusing issue where doing 'merchant.setRecipes(merchant.getRecipes());' would clear the merchants recipes, as the implementation of getRecipes is guavas Lists.transform wrapped in Collections.unmodifiableList, and the implementation of setRecipes clears the backing list before adding the elements of the provided list to the backing list. The javadoc for the getRecipes method says 'an immutable list of trades', so this patch makes the javadoc correct.
2021-02-11 00:06:34 +01:00
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMerchant.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMerchant.java
@@ -25,7 +25,7 @@ public class CraftMerchant implements Merchant {
@Override
public List<MerchantRecipe> getRecipes() {
Updated Upstream (CraftBukkit/Spigot) Doesn't compile yet. CraftBukkit Changes: 90d6905b Repackage NMS 69cf961d Repackage patches Spigot Changes: 79d53c28 Repackage NMS
2021-03-16 08:19:45 +01:00
- return Collections.unmodifiableList(Lists.transform(merchant.getOffers(), new Function<net.minecraft.world.item.trading.MerchantRecipe, MerchantRecipe>() {
+ return com.google.common.collect.ImmutableList.copyOf(Lists.transform(merchant.getOffers(), new Function<net.minecraft.world.item.trading.MerchantRecipe, MerchantRecipe>() { // Paper - javadoc says 'an immutable list of trades' - not 'an unmodifiable view of a list of trades'. fixes issue with setRecipes(getRecipes())
Merchant#getRecipes should return an immutable list (#5183) This fixes a confusing issue where doing 'merchant.setRecipes(merchant.getRecipes());' would clear the merchants recipes, as the implementation of getRecipes is guavas Lists.transform wrapped in Collections.unmodifiableList, and the implementation of setRecipes clears the backing list before adding the elements of the provided list to the backing list. The javadoc for the getRecipes method says 'an immutable list of trades', so this patch makes the javadoc correct.
2021-02-11 00:06:34 +01:00
@Override
Updated Upstream (CraftBukkit/Spigot) Doesn't compile yet. CraftBukkit Changes: 90d6905b Repackage NMS 69cf961d Repackage patches Spigot Changes: 79d53c28 Repackage NMS
2021-03-16 08:19:45 +01:00
public MerchantRecipe apply(net.minecraft.world.item.trading.MerchantRecipe recipe) {
Merchant#getRecipes should return an immutable list (#5183) This fixes a confusing issue where doing 'merchant.setRecipes(merchant.getRecipes());' would clear the merchants recipes, as the implementation of getRecipes is guavas Lists.transform wrapped in Collections.unmodifiableList, and the implementation of setRecipes clears the backing list before adding the elements of the provided list to the backing list. The javadoc for the getRecipes method says 'an immutable list of trades', so this patch makes the javadoc correct.
2021-02-11 00:06:34 +01:00
return recipe.asBukkit();
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