SnakeYaml now ignores additional mapping values in files, so it throws less errors.

Essentials/src/com/earth2me/essentials/storage/BukkitConstructor.java

@@ -1,6 +1,12 @@
 package com.earth2me.essentials.storage;
 
+import java.beans.IntrospectionException;
+import java.lang.reflect.Field;
+import java.util.List;
 import java.util.Locale;
+import java.util.Map;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 import java.util.regex.Pattern;
 import org.bukkit.Bukkit;
 import org.bukkit.Location;
@@ -11,8 +17,10 @@ import org.bukkit.inventory.ItemStack;
 import org.bukkit.material.MaterialData;
 import org.bukkit.plugin.Plugin;
 import org.bukkit.plugin.java.JavaPluginLoader;
+import org.yaml.snakeyaml.TypeDescription;
 import org.yaml.snakeyaml.constructor.Constructor;
 import org.yaml.snakeyaml.error.YAMLException;
+import org.yaml.snakeyaml.introspector.Property;
 import org.yaml.snakeyaml.nodes.*;
 
 
@@ -270,6 +278,132 @@ public class BukkitConstructor extends Constructor
 			}
 			return super.construct(node);
 		}
+
+		protected Object constructJavaBean2ndStep(final MappingNode node, final Object object)
+		{
+			Map<Class<? extends Object>, TypeDescription> typeDefinitions;
+			try
+			{
+				final Field typeDefField = Constructor.class.getDeclaredField("typeDefinitions");
+				typeDefField.setAccessible(true);
+				typeDefinitions = (Map<Class<? extends Object>, TypeDescription>)typeDefField.get((Constructor)BukkitConstructor.this);
+				if (typeDefinitions == null) {
+					throw new NullPointerException();
+				}
+			}
+			catch (Exception ex)
+			{
+				throw new YAMLException(ex);
+			}
+			flattenMapping(node);
+			final Class<? extends Object> beanType = node.getType();
+			final List<NodeTuple> nodeValue = node.getValue();
+			for (NodeTuple tuple : nodeValue)
+			{
+				ScalarNode keyNode;
+				if (tuple.getKeyNode() instanceof ScalarNode)
+				{
+					// key must be scalar
+					keyNode = (ScalarNode)tuple.getKeyNode();
+				}
+				else
+				{
+					throw new YAMLException("Keys must be scalars but found: " + tuple.getKeyNode());
+				}
+				final Node valueNode = tuple.getValueNode();
+				// keys can only be Strings
+				keyNode.setType(String.class);
+				final String key = (String)constructObject(keyNode);
+				try
+				{
+					Property property;
+					try
+					{
+						property = getProperty(beanType, key);
+					}
+					catch (YAMLException e)
+					{
+						continue;
+					}
+					valueNode.setType(property.getType());
+					final TypeDescription memberDescription = typeDefinitions.get(beanType);
+					boolean typeDetected = false;
+					if (memberDescription != null)
+					{
+						switch (valueNode.getNodeId())
+						{
+						case sequence:
+							final SequenceNode snode = (SequenceNode)valueNode;
+							final Class<? extends Object> memberType = memberDescription.getListPropertyType(key);
+							if (memberType != null)
+							{
+								snode.setListType(memberType);
+								typeDetected = true;
+							}
+							else if (property.getType().isArray())
+							{
+								snode.setListType(property.getType().getComponentType());
+								typeDetected = true;
+							}
+							break;
+						case mapping:
+							final MappingNode mnode = (MappingNode)valueNode;
+							final Class<? extends Object> keyType = memberDescription.getMapKeyType(key);
+							if (keyType != null)
+							{
+								mnode.setTypes(keyType, memberDescription.getMapValueType(key));
+								typeDetected = true;
+							}
+							break;
+						}
+					}
+					if (!typeDetected && valueNode.getNodeId() != NodeId.scalar)
+					{
+						// only if there is no explicit TypeDescription
+						final Class<?>[] arguments = property.getActualTypeArguments();
+						if (arguments != null)
+						{
+							// type safe (generic) collection may contain the
+							// proper class
+							if (valueNode.getNodeId() == NodeId.sequence)
+							{
+								final Class<?> t = arguments[0];
+								final SequenceNode snode = (SequenceNode)valueNode;
+								snode.setListType(t);
+							}
+							else if (valueNode.getTag().equals(Tag.SET))
+							{
+								final Class<?> t = arguments[0];
+								final MappingNode mnode = (MappingNode)valueNode;
+								mnode.setOnlyKeyType(t);
+								mnode.setUseClassConstructor(true);
+							}
+							else if (property.getType().isAssignableFrom(Map.class))
+							{
+								final Class<?> ketType = arguments[0];
+								final Class<?> valueType = arguments[1];
+								final MappingNode mnode = (MappingNode)valueNode;
+								mnode.setTypes(ketType, valueType);
+								mnode.setUseClassConstructor(true);
+							}
+							else
+							{
+								// the type for collection entries cannot be
+								// detected
+							}
+						}
+					}
+					final Object value = constructObject(valueNode);
+					property.set(object, value);
+				}
+				catch (Exception e)
+				{
+					throw new YAMLException("Cannot create property=" + key + " for JavaBean="
+											+ object + "; " + e.getMessage(), e);
+				}
+			}
+			return object;
+		}
 	}
 
 	@Override