| /* Copyright 2004-2005 the original author or authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.codehaus.groovy.grails.scaffolding; |
| |
| import org.codehaus.groovy.grails.validation.ConstrainedProperty; |
| import org.codehaus.groovy.grails.commons.GrailsDomainClass; |
| import org.codehaus.groovy.grails.commons.GrailsDomainClassProperty; |
| |
| import java.util.Comparator; |
| import java.util.Map; |
| |
| /** |
| * Comparator that uses the domain class property constraints to establish order in sort methods and always |
| * places the id first |
| * |
| * @author Graeme Rocher |
| * @since 10-Feb-2006 |
| */ |
| public class DomainClassPropertyComparator implements Comparator { |
| private Map constrainedProperties; |
| private GrailsDomainClass domainClass; |
| |
| public DomainClassPropertyComparator(GrailsDomainClass domainClass) { |
| if(domainClass == null) |
| throw new IllegalArgumentException("Argument 'domainClass' is required!"); |
| |
| this.constrainedProperties = domainClass.getConstrainedProperties(); |
| this.domainClass = domainClass; |
| } |
| |
| public int compare(Object o1, Object o2) { |
| if(o1.equals(domainClass.getIdentifier())) |
| return -1; |
| else if(o2.equals(domainClass.getIdentifier())) |
| return 1; |
| |
| GrailsDomainClassProperty prop1 = (GrailsDomainClassProperty)o1; |
| GrailsDomainClassProperty prop2 = (GrailsDomainClassProperty)o2; |
| |
| ConstrainedProperty cp1 = (ConstrainedProperty)constrainedProperties.get(prop1.getName()); |
| ConstrainedProperty cp2 = (ConstrainedProperty)constrainedProperties.get(prop2.getName()); |
| |
| if(cp1 == null & cp2 == null) |
| return prop1.getName().compareTo(prop2.getName()); |
| if(cp1 == null) |
| return 1; |
| else if(cp2 == null) |
| return -1; |
| else { |
| if(cp1.getOrder() > cp2.getOrder()) |
| return 1; |
| else if(cp1.getOrder() < cp2.getOrder()) |
| return -1; |
| else |
| return 0; |
| } |
| } |
| } |