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Java implementation of the raml parser taken from https://github.com/raml-org/raml-java-parser and adjusted
/*
* Copyright 2013 (c) MuleSoft, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
* either express or implied. See the License for the specific
* language governing permissions and limitations under the License.
*/
package org.raml.parser.builder;
import java.lang.reflect.Field;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.raml.parser.annotation.Mapping;
import org.raml.parser.annotation.Scalar;
import org.raml.parser.annotation.Sequence;
import org.raml.parser.resolver.EnumHandler;
import org.raml.parser.resolver.TupleHandler;
import org.raml.parser.utils.ReflectionUtils;
import org.yaml.snakeyaml.nodes.MappingNode;
import org.yaml.snakeyaml.nodes.ScalarNode;
import org.yaml.snakeyaml.nodes.SequenceNode;
public class TupleBuilderFactory extends AbstractFactory
{
public void addBuildersTo(Class pojoClass, TupleBuilder parent)
{
final List declaredFields = ReflectionUtils.getInheritedFields(pojoClass);
final Map> innerBuilders = new HashMap>();
for (Field declaredField : declaredFields)
{
Scalar scalar = declaredField.getAnnotation(Scalar.class);
Mapping mapping = declaredField.getAnnotation(Mapping.class);
Sequence sequence = declaredField.getAnnotation(Sequence.class);
TupleBuilder tupleBuilder = null;
TupleHandler tupleHandler = null;
if (scalar != null)
{
tupleBuilder = createScalarBuilder(declaredField, scalar);
tupleHandler = createHandler(scalar.handler(), scalar.alias(), ScalarNode.class);
}
else if (mapping != null)
{
tupleBuilder = createMappingBuilder(declaredField, mapping);
tupleHandler = createHandler(mapping.handler(), mapping.alias(), MappingNode.class);
if (tupleBuilder instanceof MapTupleBuilder)
{
((MapTupleBuilder) tupleBuilder).setInnerTupleHandler(createHandler(mapping.innerHandler(), "", null));
}
}
else if (sequence != null)
{
tupleBuilder = createSequenceBuilder(declaredField, sequence);
tupleHandler = createHandler(sequence.handler(), sequence.alias(), SequenceNode.class);
}
if (tupleBuilder != null)
{
if (tupleHandler != null)
{
tupleBuilder.setHandler(tupleHandler);
}
tupleBuilder.setParentNodeBuilder(parent);
innerBuilders.put(declaredField.getName(), tupleBuilder);
}
}
parent.setChildrenTupleBuilders(innerBuilders);
}
private TupleBuilder createSequenceBuilder(Field declaredField, Sequence sequence)
{
TupleBuilder tupleBuilder = null;
if (sequence.builder() != TupleBuilder.class)
{
tupleBuilder = createInstanceOf(sequence.builder());
}
else
{
if (List.class.isAssignableFrom(declaredField.getType()))
{
Type type = declaredField.getGenericType();
if (type instanceof ParameterizedType)
{
ParameterizedType pType = (ParameterizedType) type;
Type itemType = pType.getActualTypeArguments()[0];
tupleBuilder = new SequenceTupleBuilder(declaredField.getName(), itemType);
}
}
else
{
throw new RuntimeException("Only List can be sequence. Error on field " + declaredField.getName());
}
}
return tupleBuilder;
}
private TupleBuilder createScalarBuilder(Field declaredField, Scalar scalar)
{
TupleBuilder tupleBuilder;
if (scalar.builder() != TupleBuilder.class)
{
tupleBuilder = createInstanceOf(scalar.builder());
}
else
{
if (ReflectionUtils.isPojo(declaredField.getType()))
{
tupleBuilder = new PojoTupleBuilder(declaredField.getName(), declaredField.getType());
}
else
{
tupleBuilder = new ScalarTupleBuilder(declaredField.getName(), declaredField.getType());
}
}
return tupleBuilder;
}
private TupleBuilder createMappingBuilder(Field declaredField, Mapping mapping)
{
TupleBuilder tupleBuilder = null;
if (mapping.builder() != TupleBuilder.class)
{
tupleBuilder = createInstanceOf(mapping.builder());
}
else
{
if (Map.class.isAssignableFrom(declaredField.getType()))
{
Type type = declaredField.getGenericType();
if (type instanceof ParameterizedType)
{
ParameterizedType pType = (ParameterizedType) type;
Type keyType = pType.getActualTypeArguments()[0];
Type valueType = pType.getActualTypeArguments()[1];
if (keyType instanceof Class)
{
Class keyClass = (Class) keyType;
if (valueType instanceof Class)
{
if (mapping.implicit())
{
tupleBuilder = new ImplicitMapEntryBuilder(declaredField.getName(), keyClass, (Class) valueType);
}
else
{
tupleBuilder = new MapTupleBuilder(declaredField.getName(), (Class) valueType);
}
}
else if (valueType instanceof ParameterizedType)
{
Type rawType = ((ParameterizedType) valueType).getRawType();
if (rawType instanceof Class && List.class.isAssignableFrom((Class) rawType))
{
Type listType = ((ParameterizedType) valueType).getActualTypeArguments()[0];
if (listType instanceof Class)
{
tupleBuilder = new MapWithListValueTupleBuilder(declaredField.getName(), (Class) listType);
}
}
}
if (keyClass.isEnum())
{
tupleBuilder.setHandler(new EnumHandler(MappingNode.class, (Class) keyClass));
}
}
}
}
else
{
tupleBuilder = new PojoTupleBuilder(declaredField.getName(), declaredField.getType());
}
}
return tupleBuilder;
}
}