集成modeler

src/main/java/com/bbd/bpm/activiti/ModelSaveRestResource.java

+/* 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.bbd.bpm.activiti;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.InputStream;
+
+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.batik.transcoder.TranscoderInput;
+import org.apache.batik.transcoder.TranscoderOutput;
+import org.apache.batik.transcoder.image.PNGTranscoder;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.util.MultiValueMap;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.ResponseStatus;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+
+/**
+ * @author Tijs Rademakers
+ */
+@RestController
+@RequestMapping("service")
+public class ModelSaveRestResource implements ModelDataJsonConstants {
+  
+  protected static final Logger LOGGER = LoggerFactory.getLogger(ModelSaveRestResource.class);
+
+  @Autowired
+  private RepositoryService repositoryService;
+  
+  @Autowired
+  private ObjectMapper objectMapper;
+  
+  @RequestMapping(value="/model/{modelId}/save", method = RequestMethod.PUT)
+  @ResponseStatus(value = HttpStatus.OK)
+  public void saveModel(@PathVariable String modelId, @RequestBody MultiValueMap<String, String> values) {
+    try {
+      
+      Model model = repositoryService.getModel(modelId);
+      
+      ObjectNode modelJson = (ObjectNode) objectMapper.readTree(model.getMetaInfo());
+      
+      modelJson.put(MODEL_NAME, values.getFirst("name"));
+      modelJson.put(MODEL_DESCRIPTION, values.getFirst("description"));
+      model.setMetaInfo(modelJson.toString());
+      model.setName(values.getFirst("name"));
+      
+      repositoryService.saveModel(model);
+      
+      repositoryService.addModelEditorSource(model.getId(), values.getFirst("json_xml").getBytes("utf-8"));
+      
+      InputStream svgStream = new ByteArrayInputStream(values.getFirst("svg_xml").getBytes("utf-8"));
+      TranscoderInput input = new TranscoderInput(svgStream);
+      
+      PNGTranscoder transcoder = new PNGTranscoder();
+      // Setup output
+      ByteArrayOutputStream outStream = new ByteArrayOutputStream();
+      TranscoderOutput output = new TranscoderOutput(outStream);
+      
+      // Do the transformation
+      transcoder.transcode(input, output);
+      final byte[] result = outStream.toByteArray();
+      repositoryService.addModelEditorSourceExtra(model.getId(), result);
+      outStream.close();
+      
+    } catch (Exception e) {
+      e.printStackTrace();
+      LOGGER.error("Error saving model", e);
+      throw new ActivitiException("Error saving model", e);
+    }
+  }
+}