MappedModelImpl.java

/*
 * Created on 06.02.2006
 *
 */
package org.dresdenocl.tools.transformation.pivot2sql.mapping;

import java.util.HashMap;
import java.util.Map;

import org.dresdenocl.tools.codegen.declarativ.mapping.IMappedClass;
import org.dresdenocl.tools.codegen.declarativ.mapping.IMappedModel;

/**
 * This class implements the interface MappedModel. This implementation is used
 * by the Pivot2MappedModel transformation to provide the the navigation
 * information needed by the DeclarativeCodeGenerator.
 * 
 * @author Christian Wende
 */
public class MappedModelImpl implements IMappedModel {

	private static final String NO_CLASS_FOR_NAME =
			"There is no class for the given name ";
	private Map<String, IMappedClass> name2mClass;

	/**
	 * The standard constructor for a MappedModelImpl.
	 * 
	 */
	public MappedModelImpl() {

		name2mClass = new HashMap<String, IMappedClass>();
	}

	/**
	 * This method returns the MappedClass for the given class name from the
	 * MappedModel
	 * 
	 * @param name
	 *          the name of the class
	 * @return the MappedClass for the given class name from the MappedModel
	 */
	public IMappedClass getClass(String name) {

		IMappedClass mc = name2mClass.get(name);
		if (mc == null) {
			throw new IllegalArgumentException(NO_CLASS_FOR_NAME + name);
		}
		return mc;
	}

	/**
	 * This method returns true if a mappedClass for the given name exists in the
	 * MappedModel.
	 * 
	 * @param name
	 *          the name of the class
	 * @return Returns true if a mappedClass for the given name exists in the
	 *         MappedModel.
	 */
	public boolean isClass(String name) {

		return name2mClass.keySet().contains(name);
	}

	public void addMappedClass(String name, IMappedClass mClass) {

		name2mClass.put(name, mClass);
	}

}