org.eclipse.xtext.example.domainmodel/src/org/eclipse/xtext/example/domainmodel/validation/DomainmodelJavaValidator.java

/*******************************************************************************
 * Copyright (c) 2011 itemis AG (http://www.itemis.eu) and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0 
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *******************************************************************************/
package org.eclipse.xtext.example.domainmodel.validation;

import java.util.List;

import org.eclipse.emf.ecore.EPackage;
import org.eclipse.xtext.example.domainmodel.domainmodel.DomainmodelPackage;
import org.eclipse.xtext.example.domainmodel.domainmodel.Entity;
import org.eclipse.xtext.example.domainmodel.domainmodel.Feature;
import org.eclipse.xtext.example.domainmodel.domainmodel.PackageDeclaration;
import org.eclipse.xtext.util.Strings;
import org.eclipse.xtext.validation.Check;
import org.eclipse.xtext.validation.ValidationMessageAcceptor;
import org.eclipse.xtext.xbase.validation.XbaseJavaValidator;

public class DomainmodelJavaValidator extends XbaseJavaValidator {

    @Check
    public void checkTypeNameStartsWithCapital(Entity entity) {
        if (!Character.isUpperCase(entity.getName().charAt(0))) {
            warning("Name should start with a capital", 
            		DomainmodelPackage.Literals.ABSTRACT_ELEMENT__NAME,
            		ValidationMessageAcceptor.INSIGNIFICANT_INDEX,
            		IssueCodes.INVALID_TYPE_NAME, 
            		entity.getName());
        }
    }

    @Check
    public void checkFeatureNameStartsWithLowercase(Feature feature) {
        if (!Character.isLowerCase(feature.getName().charAt(0))) {
            warning("Name should start with a lowercase", 
            		DomainmodelPackage.Literals.FEATURE__NAME,
            		ValidationMessageAcceptor.INSIGNIFICANT_INDEX,
            		IssueCodes.INVALID_FEATURE_NAME, 
            		feature.getName());
        }
    }
    
    @Check
    public void checkPackage(PackageDeclaration packages) {
    	if(Strings.isEmpty(packages.getName())) {
    		error("Name cannot be empty", DomainmodelPackage.Literals.ABSTRACT_ELEMENT__NAME);
    	}
        if (packages.getName().equals("java")) {
            error("Invalid package name", 
            		DomainmodelPackage.Literals.ABSTRACT_ELEMENT__NAME);
        }
    }
    
	@Override
	protected List<EPackage> getEPackages() {
		List<EPackage> ePackages = super.getEPackages();
		ePackages.add(DomainmodelPackage.eINSTANCE);
		return ePackages;
	}
}