org.camunda.bpm.dmn.xlsx.SimpleInputOutputDetectionStrategy Maven / Gradle / Ivy

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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 org.camunda.bpm.dmn.xlsx;

import java.util.List;

import org.camunda.bpm.dmn.xlsx.elements.IndexedCell;
import org.camunda.bpm.dmn.xlsx.elements.IndexedRow;

/**
 * @author Thorben Lindhauer
 *
 */
public class SimpleInputOutputDetectionStrategy implements InputOutputDetectionStrategy {

  public InputOutputColumns determineHeaderCells(IndexedRow headerRow, XlsxWorksheetContext context) {
    if (!headerRow.hasCells()) {
      throw new RuntimeException("A dmn table requires at least one output; the header row contains no entries");
    }

    InputOutputColumns ioColumns = new InputOutputColumns();

    List cells = headerRow.getCells();
    ioColumns.addOutputHeaderCell(cells.get(cells.size() - 1));

    for (IndexedCell inputCell : cells.subList(0, cells.size() - 1)) {
      ioColumns.addInputHeaderCell(inputCell);
    }

    return ioColumns;
  }

}