org.eclipse.osbp.xtext.datamart.common/src/org/eclipse/osbp/xtext/datamart/common/AEntityDatamart.java

/**
 *                                                                            
 * Copyright (c) 2011, 2016 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
 *                                                                            
 * All rights reserved. This program and the accompanying materials           
 * are made available under the terms of the Eclipse Public License v1.0       
 * which accompanies this distribution, and is available at                  
 * http://www.eclipse.org/legal/epl-v10.html                                 
 *                                                                            
 * Contributors:   
 * Christophe Loetz (Loetz GmbH&Co.KG) - initial implementation 
 */
package org.eclipse.osbp.xtext.datamart.common;

import java.sql.Connection;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.eclipse.osbp.dsl.common.datatypes.IDto;
import org.eclipse.osbp.ui.api.datamart.DerivedOlapException;
import org.eclipse.osbp.ui.api.user.IUser;
import org.eclipse.osbp.utils.common.IEntityIdModificationListenerView;
import org.eclipse.osbp.utils.fillertext.FillerTextProvider;
import org.eclipse.osbp.xtext.datamart.common.olap.DerivedAxis;
import org.eclipse.osbp.xtext.datamart.common.olap.DerivedCell;
import org.eclipse.osbp.xtext.datamart.common.olap.DerivedCellSet;
import org.eclipse.osbp.xtext.datamart.common.olap.DerivedPosition;

@SuppressWarnings("all")
public abstract class AEntityDatamart extends ADatamart<Connection> {
	public abstract DerivedCellSet getResults(final IUser user, final Map<String,String> filteredItems, Class operativeDtoClass, List<IDto> operativeDtos);
	protected boolean fFillerTextEnabled = false;

	/**
	 * @param enableFillerText enable using filler text for following calls to {@link #getResults(Map)}
	 */
	public void enableFillerText(boolean enableFillerText) {
		fFillerTextEnabled = enableFillerText;
	}
	/**
	 * @return the generated filler text result set. Has be generated for each datamart class
	 */
	protected ResultSet generateFillerTextResultSet() {
		return null;
	}
	/**
	 * @param provider the filler text provider in use
	 * @return the generated filler text row. Has be generated for each datamart class
	 */
	public Map<String, Object> generateFillerTextRow(FillerTextProvider provider) {
		return null;
	}
	
	/**
	 * @see {@link IEntityIdModificationListenerView}
	 * The view has to subscribe/unsubsribe to REFRESH_VIEW!
	 * <br>
	 * <b>The IDs/UUIDs for entities have to be on the AXIS_COLUMN only!</b>
	 * @param listeningView the view, that should listen to modifications on modified entity ids
	 * @param cellSet the result set, from which the entity ids, that should be listened to, are extracted 
	 */
	public void addEntityIdsToModifyListener(IEntityIdModificationListenerView listeningView, DerivedCellSet cellSet) {
		// --- find all columns containing entity ids/uuids
		Map<String,Integer> entityIdColumns = new HashMap<String, Integer>();
		try {
			// --- next get the header for all "columns" ---
			// Column header
			// See
			// http://www.olap4j.org/api/index.html?org/olap4j/Position.html
			// on how Position works, it helps a lot
			// Every position will be a column in the header
			int count = 0;
			for (DerivedPosition pos : cellSet.getAxes().get(DerivedAxis.AXIS_COLUMNS).getPositions()) {
				String columnName = pos.getMembers().get(0).getCaption();
				if	(DatamartDefinitionUtil.isEntityIdColumnName(columnName)) {
					entityIdColumns.put(DatamartDefinitionUtil.getEntityNameForIdColumnName(columnName), count);
				}
				count++;
			}
		}
		catch (Exception e) {
		}
		if	(!entityIdColumns.isEmpty()) {
			addEntityIdsToModifyListener(listeningView, cellSet, entityIdColumns, cellSet.getAxes().size(), new ArrayList<Integer>());
		}
	}
	
	private void addEntityIdsToModifyListener(IEntityIdModificationListenerView listeningView, DerivedCellSet cellSet, Map<String,Integer> entityIdColumns, int axisDepth, ArrayList<Integer> coordinate) {
		int itemCount = cellSet.getAxes().get(axisDepth-1).getPositions().size();
		if	(axisDepth > 1) {
			for	(int item = 0; item < itemCount; item++) {
				ArrayList<Integer> newCoordinate = new ArrayList<Integer>();
				newCoordinate.add(item);
				newCoordinate.addAll(coordinate);
				addEntityIdsToModifyListener(listeningView, cellSet, entityIdColumns, axisDepth-1, newCoordinate);
			}
		}
		else {
			for	(String entityName : entityIdColumns.keySet()) {
				ArrayList<Integer> newCoordinate = new ArrayList<Integer>();
				newCoordinate.add(entityIdColumns.get(entityName));
				newCoordinate.addAll(coordinate);
				DerivedCell result;
				try {
					result = cellSet.getCell(newCoordinate);
					if	(result != null) {
						listeningView.addEntityIdToModifyListener(entityName, result.getFormattedValue().trim());
					}
				} catch (DerivedOlapException e) {
					e.printStackTrace();
				}
			}
		}
	}
}