Camunda-dmn-model is not allowing to append a new RULE in an existing decision table

suvaio · March 13, 2017, 5:00am

I need to use the DMN in my project and the requirement is to add a new RULE programmatically in an existing decision table.

DmnModelInstance dmnModelInstance = Dmn.readModelFromStream(ExampleTestCompatibility.class.getResourceAsStream(“Example.dmn”));
DecisionTable decisionTable = dmnModelInstance.getModelElementById(“decisionTable”);
decisionTable.getRules().add(newRules);

When I drilled down into the source code,I found that ChildElementCollectionBuilderImpl class in camunda-xml-model where the collection is made immutable … collection.setImmutable();

Is there any sort of restriction of not allowing to append row in an existing Decision Table ?

Philipp_Ossler · March 13, 2017, 7:26am

Hi @suvaio,

please have a look at the class:

github.com

camunda/camunda-engine-dmn-benchmark/blob/master/src/main/java/org/camunda/bpm/dmn/engine/benchmark/util/DecisionTableGenerator.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 org.camunda.bpm.dmn.engine.benchmark.util;

import java.io.File;
import java.io.InputStream;

import org.camunda.bpm.model.dmn.Dmn;
import org.camunda.bpm.model.dmn.DmnModelInstance;
import org.camunda.bpm.model.dmn.instance.Decision;

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Does this help you?

Best regards,
Philipp

suvaio · March 13, 2017, 8:41am

Thanks a lot.
The problem might have been with the template I was using.