Register a StringMapper for JsonNode

cowwoc · Aug 30, 2024 · 6f43a36 · 6f43a36
1 parent 85e3488
commit 6f43a36
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diff --git a/...va/com/github/cowwoc/requirements10/jackson/internal/validator/JacksonValidatorsImpl.java b/...va/com/github/cowwoc/requirements10/jackson/internal/validator/JacksonValidatorsImpl.java
@@ -5,6 +5,8 @@
 import com.github.cowwoc.requirements10.jackson.validator.JsonNodeValidator;
 import com.github.cowwoc.requirements10.java.ValidationFailure;
 import com.github.cowwoc.requirements10.java.internal.Configuration;
+import com.github.cowwoc.requirements10.java.internal.ConfigurationUpdater;
+import com.github.cowwoc.requirements10.java.internal.MutableStringMappers;
 import com.github.cowwoc.requirements10.java.internal.scope.ApplicationScope;
 import com.github.cowwoc.requirements10.java.internal.validator.AbstractValidators;
 
@@ -29,6 +31,11 @@ public class JacksonValidatorsImpl extends AbstractValidators<JacksonValidators>
 	public JacksonValidatorsImpl(ApplicationScope scope, Configuration configuration)
 	{
 		super(scope, configuration);
+		try (ConfigurationUpdater config = updateConfiguration())
+		{
+			MutableStringMappers stringMappers = config.stringMappers();
+			stringMappers.putIfAbsent(JsonNode.class, (value, seen) -> ((JsonNode) value).toPrettyString());
+		}
 	}
 
 	/**

diff --git a/java/src/main/java/com/github/cowwoc/requirements10/java/internal/MutableStringMappers.java b/java/src/main/java/com/github/cowwoc/requirements10/java/internal/MutableStringMappers.java
@@ -63,6 +63,18 @@ public MutableStringMappers put(Class<?> type, StringMapper mapper)
 		return this;
 	}
 
+	/**
+	 * Returns the function that maps an object of the given type to a String.
+	 * @param type a type
+	 * @param mapper a function that returns the String representation of the type's instances
+	 * @return this
+	 */
+	public MutableStringMappers putIfAbsent(Class<?> type, StringMapper mapper)
+	{
+		typeToMapper.putIfAbsent(Optional.ofNullable(type), mapper);
+		return this;
+	}
+
 	/**
 	 * Removes a mapper for a type.
 	 *