org.eclipse.osbp.xtext.datamart.common/src/org/eclipse/osbp/xtext/datamart/common/DatamartDefinitionUtil.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 org.eclipse.osbp.dsl.semantic.entity.LEntity;
import org.eclipse.osbp.dsl.semantic.entity.LEntityAttribute;
import org.eclipse.osbp.ui.api.datamart.IDataMart;
import org.eclipse.osbp.utils.entityhelper.DataType;
import org.eclipse.osbp.ui.api.datamart.IDataMart.EType;

public class DatamartDefinitionUtil {

	public static String getEntityNameForIdColumnName(String columnName) {
		if	(isEntityIdColumnName(columnName)) {
			return columnName.substring(IDataMart.DATAMART_ID_COLUMN_PREFIX.length(), columnName.length()-IDataMart.DATAMART_ID_COLUMN_POSTFIX.length());
		}
		else {
			return null;
		}
	}
	
	public static boolean isEntityIdColumnName(String columnName) {
		return columnName.startsWith(IDataMart.DATAMART_ID_COLUMN_PREFIX) && columnName.endsWith(IDataMart.DATAMART_ID_COLUMN_POSTFIX);
	}
	
	public static String getEntityIdColumnName(LEntity entityRef) {
		LEntityAttribute idAttribute = getEntityIdAttribute(entityRef);
		if	(idAttribute == null) {
			return null;
		}
		else {
			return entityRef.getName()+"."+idAttribute.getName();
		}
	}
	
	public static String getEntityIdAliasName(LEntity entityRef) {
		LEntityAttribute idAttribute = getEntityIdAttribute(entityRef);
		if	(idAttribute == null) {
			return null;
		}
		else {
			return IDataMart.DATAMART_ID_COLUMN_PREFIX+entityRef.getName()+IDataMart.DATAMART_ID_COLUMN_POSTFIX;
		}
	}
	
	public static LEntityAttribute getEntityIdAttribute(LEntity entityRef) {
		for	(LEntityAttribute attribute : entityRef.getAllAttributes()) {
			if	(attribute.isId() || attribute.isUuid()) {
				return attribute;
			}
		}
		return null;
	}

	public static String getEntityIdDatatype(LEntity entityRef) {
		for	(LEntityAttribute attribute : entityRef.getAllAttributes()) {
			if	(attribute.isId() || attribute.isUuid()) {
				return attribute.getType().getName();
			}
		}
		return null;
	}

	public static EType getEntityIdEType(LEntity entityRef) {
		for	(LEntityAttribute attribute : entityRef.getAllAttributes()) {
			if	(attribute.isId() || attribute.isUuid()) {
				return (new DataType()).getBasicType(attribute);
			}
		}
		return null;
	}
}