Testing

BM_src/thaumcraft/api/aspects/IEssentiaContainerItem.java

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+package thaumcraft.api.aspects;
+
+import net.minecraft.item.ItemStack;
+import net.minecraft.nbt.NBTTagCompound;
+
+/**
+ *
+ * @author azanor
+ *
+ * Used by wispy essences and essentia phials to hold their aspects.
+ * Useful for similar item containers that store their aspect information in nbt form so TC
+ * automatically picks up the aspects they contain
+ *
+ */
+public interface IEssentiaContainerItem
+{
+    public AspectList getAspects(ItemStack itemstack);
+    public void setAspects(ItemStack itemstack, AspectList aspects);
+}
+
+//Example implementation
+/*
+	@Override
+	public AspectList getAspects(ItemStack itemstack) {
+		if (itemstack.hasTagCompound()) {
+			AspectList aspects = new AspectList();
+			aspects.readFromNBT(itemstack.getTagCompound());
+			return aspects.size()>0?aspects:null;
+		}
+		return null;
+	}
+
+	@Override
+	public void setAspects(ItemStack itemstack, AspectList aspects) {
+		if (!itemstack.hasTagCompound()) itemstack.setTagCompound(new NBTTagCompound());
+		aspects.writeToNBT(itemstack.getTagCompound());
+	}
+*/