org.eclipse.osbp.xtext.datamart.common/src/org/eclipse/osbp/xtext/datamart/common/ADatamart.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.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

import org.eclipse.osbp.preferences.EnumDatabaseVendor;
import org.eclipse.osbp.preferences.ProductConfiguration;
import org.eclipse.osbp.ui.api.datamart.IDataMart;
import org.eclipse.osbp.ui.api.user.IUser;
import org.eclipse.osbp.ui.api.datamart.IDataMart.EType;

@SuppressWarnings("all")
public abstract class ADatamart<C> implements IDataMart {
	public abstract C connect();
	public abstract HashMap<Integer,ArrayList<String>> getAxisMap();
	public abstract int getNumberOfAxes();
	public abstract HashMap<String, EType> getIdMap();
	public abstract HashMap<String, EType> getTypesMap(IUser user);
	public String setFilters(final Map<String,String> filteredItems) {
		return null;
	}
	/**
	 * @see {@link #enableFillerText(boolean)}
	 * @param filteredItems
	 * @return returns results from datamart. If filler text is enabled, the result will be generated via filler text.
	 */
	public abstract void disconnect();
	
	protected EnumDatabaseVendor dbVendor = null;
    private HashMap<String, String> filterMap = null;
    
    /** 
     * @return the map with all filters, which has to be initialized once
     */
    private HashMap<String, String> getFilterMap() {
    	if	(filterMap == null) {
    		String jndiName = ProductConfiguration.getPersistenceUnitJndiName(getPersistenceUnit());
    		dbVendor = ProductConfiguration.getDataSource(jndiName).getDatabaseVendor();
    		filterMap = initializeFilterMap();
    	}
    	return filterMap;
    }

    /**
     * @return all filter ids
     */
    protected Set<String> getFilterIds() {
    	return getFilterMap().keySet();    	
    }

    /**
     * @param filterID
     * @return the filter for the given filter id
     */
    protected String getFilter(String filterID) {
    	String filter = getFilterMap().get(filterID);
    	if	(filter != null) {
    		filter = dbVendor.applySqlSpecifications(filter);
    	}
    	return filter;
    }

    /**
     * @return count of filters
     */
    protected int getFiltersCount() {
    	return getFilterMap().size();
    }

    /**
     * @return the persistence unit used
     */
    abstract protected String getPersistenceUnit();
    
    /**
     * @return the initialized filter map
     */
    abstract protected HashMap<String, String> initializeFilterMap();
}