/**
* Writes the given marshaling tree to the given marshal target.
*
* <p>Any contained {@link RawObjectNode} will be marshaled in the same way as by {@link
* #marshal(Object, Collection, MarshalTarget)}.
*
* <p>This method performs the equivalent of the following steps:
*
* <ul>
* <li>find the appropriate marshaler, either the one returned by {@link
* ObjectNode#getMarshaler()} if it is non-null, or otherwise the one returned by {@link
* #findMarshaler(Object, Collection)},
* <li>create a marshal context using {@link #create(Marshaler, Collection, MarshalTarget)},
* <li>process the marshaling tree using {@link #acceptTree(ObjectNode)}.
* </ul>
*
* @param tree marshaling tree that needs to be transformed and marshaled
* @param marshalers collection of {@link Marshaler} instances to choose from when a marshaler
* invokes {@link MarshalContext#writeObject(Object, Key)} recursively
* @param marshalTarget marshal target for elementary marshal operations
* @throws MarshalingException if a marshaling error occurs
* @throws IOException if an I/O error occurs
*/
public static void processMarshalingTree(
ObjectNode tree, Collection<? extends Marshaler<?>> marshalers, MarshalTarget marshalTarget)
throws IOException {
Objects.requireNonNull(tree);
Objects.requireNonNull(marshalers);
Objects.requireNonNull(marshalTarget);
Marshaler<?> marshaler = findMarshalerForObjectNode(tree, marshalers);
try (DelegatingMarshalContext marshalContext = create(marshaler, marshalers, marshalTarget)) {
marshalContext.acceptTree(tree);
}
}
/**
* Marshals an object using the given marshal target.
*
* <p>This method performs the equivalent of the following steps:
*
* <ul>
* <li>find the appropriate marshaler using {@link #findMarshaler(Object, Collection)},
* <li>create a marshal context using {@link #create(Marshaler, Collection, MarshalTarget)},
* <li>process the object using {@link #acceptObject(Object)}.
* </ul>
*
* @param object object to marshal
* @param marshalers collection of {@link Marshaler} instances to choose from when a marshaler
* invokes {@link MarshalContext#writeObject(Object, Key)} recursively
* @param marshalTarget marshal target used for elementary marshal operations
* @throws MarshalingException if a marshaling error occurs
* @throws IOException if an I/O error occurs
*/
public static void marshal(
Object object, Collection<? extends Marshaler<?>> marshalers, MarshalTarget marshalTarget)
throws IOException {
Objects.requireNonNull(object);
Objects.requireNonNull(marshalers);
Objects.requireNonNull(marshalTarget);
Marshaler<?> marshaler = findMarshaler(object, marshalers);
try (DelegatingMarshalContext marshalContext = create(marshaler, marshalers, marshalTarget)) {
marshalContext.acceptObject(object);
}
}
@Override
public void writeObject(Object object, Key key) throws IOException {
Objects.requireNonNull(object);
newKeyForObject(key);
Marshaler<?> childMarshaler = findMarshaler(object, marshalers);
try (DelegatingMarshalContext childContext =
new DelegatingMarshalContext(
key, marshalTarget.resolve(key), childMarshaler, marshalers, this)) {
childContext.acceptObject(object);
}
}
private IOException writeObjectNode(ObjectNode objectNode, @Nullable Key key) {
assert key != null;
try (DelegatingMarshalContext childContext =
new DelegatingMarshalContext(
key,
marshalTarget.resolve(key),
findMarshalerForObjectNode(objectNode, marshalers),
marshalers,
DelegatingMarshalContext.this)) {
newKeyForObject(key);
childContext.acceptTree(objectNode);
return null;
} catch (IOException exception) {
return exception;
}
}
@Nullable
@Override
public IOException visitRawObjectNode(
RawObjectNode node, @Nullable DelegatingMarshalContext context) {
assert context != null;
return run(() -> context.acceptObject(node.getObject()));
}
