com.randstad.rest.editor.model.ModelEditorJsonRestResource.java Source code

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Here is the source code for com.randstad.rest.editor.model.ModelEditorJsonRestResource.java

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/*
 * 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 com.randstad.rest.editor.model;

import org.activiti.editor.constants.ModelDataJsonConstants;
import org.activiti.engine.ActivitiException;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.Model;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;

/**
 * @author Tijs Rademakers
 */
@RestController
public class ModelEditorJsonRestResource implements ModelDataJsonConstants {
    private static Logger logger = LoggerFactory.getLogger(ModelEditorJsonRestResource.class);

    @Resource
    RepositoryService repositoryService;

    // private ObjectMapper objectMapper;

    @RequestMapping(value = "/service/model/{modelId}/json", method = RequestMethod.GET, produces = "application/json")
    public ObjectNode getEditorJson(@PathVariable String modelId) {
        ObjectNode modelNode = null;

        Model model = repositoryService.getModel(modelId);

        if (model != null) {
            try {

                ObjectMapper objectMapper = new ObjectMapper();

                if (StringUtils.isNotEmpty(model.getMetaInfo())) {
                    modelNode = (ObjectNode) objectMapper.readTree(model.getMetaInfo());
                } else {
                    modelNode = objectMapper.createObjectNode();
                    modelNode.put(MODEL_NAME, model.getName());
                }
                modelNode.put(MODEL_ID, model.getId());
                ObjectNode editorJsonNode = (ObjectNode) objectMapper
                        .readTree(new String(repositoryService.getModelEditorSource(model.getId()), "utf-8"));
                modelNode.put("model", editorJsonNode);

            } catch (Exception e) {
                logger.error("Error creating model JSON", e);
                throw new ActivitiException("Error creating model JSON", e);
            }
        }
        return modelNode;
    }
}