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Java implementation of the raml parser
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/*
 * Copyright 2016 (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 org.apache.commons.beanutils.BeanUtilsBean;
import org.raml.parser.resolver.DefaultScalarTupleHandler;
import org.raml.parser.utils.ConvertUtils;
import org.yaml.snakeyaml.nodes.Node;
import org.yaml.snakeyaml.nodes.ScalarNode;

import java.lang.reflect.InvocationTargetException;
import java.util.Map;

import static org.apache.commons.beanutils.SuppressPropertiesBeanIntrospector.SUPPRESS_CLASS;

public class ImplicitMapEntryBuilder extends DefaultTupleBuilder
{

    private String fieldName;

    private String keyValue;
    private Class keyClass;
    private Class valueClass;

    private BeanUtilsBean beanUtilsBean;

    public ImplicitMapEntryBuilder(String fieldName, Class keyClass, Class valueClass)
    {
        super(new DefaultScalarTupleHandler(fieldName));
        this.fieldName = fieldName;
        this.keyClass = keyClass;
        this.valueClass = valueClass;
        beanUtilsBean = new BeanUtilsBean();
        beanUtilsBean.getPropertyUtils().addBeanIntrospector(SUPPRESS_CLASS);
    }


    @Override
    protected Map> getBuilders()
    {
        if (super.getBuilders().isEmpty())
        {
            addBuildersFor(valueClass);
        }
        return super.getBuilders();
    }

    @Override
    public Object buildValue(Object parent, Node node)
    {

        Map actualParent;
        try
        {
            actualParent = (Map) beanUtilsBean.getPropertyUtils().getProperty(parent, fieldName);
            Object newValue = valueClass.newInstance();
            Object key = ConvertUtils.convertTo(keyValue, keyClass);
            actualParent.put(key, newValue);
            processPojoAnnotations(newValue, key, parent);
            return newValue;
        }
        catch (IllegalAccessException e)
        {
            throw new RuntimeException(e);
        }
        catch (InvocationTargetException e)
        {
            throw new RuntimeException(e);
        }
        catch (NoSuchMethodException e)
        {
            throw new RuntimeException(e);
        }
        catch (InstantiationException e)
        {
            throw new RuntimeException(e);
        }

    }

    @Override
    public void buildKey(Object parent, ScalarNode tuple)
    {
        keyValue = tuple.getValue();
    }

    @Override
    public String toString()
    {
        return keyValue;
    }
}