| /* |
| * Copyright (c) 2008, Rickard Öberg. All Rights Reserved. |
| * |
| * 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.apache.zest.runtime.composite; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import org.apache.zest.api.constraint.ConstraintsDescriptor; |
| import org.apache.zest.functional.HierarchicalVisitor; |
| import org.apache.zest.functional.VisitableHierarchy; |
| |
| /** |
| * JAVADOC |
| */ |
| public final class ConstraintsModel |
| implements ConstraintsDescriptor, VisitableHierarchy<Object, Object> |
| { |
| private List<ValueConstraintsModel> parameterConstraintModels; |
| |
| private static ConstraintsInstance EMPTY_CONSTRAINTS = new ConstraintsInstance( Collections.<ValueConstraintsInstance>emptyList() ); |
| |
| public ConstraintsModel( List<ValueConstraintsModel> parameterConstraintModels ) |
| { |
| this.parameterConstraintModels = parameterConstraintModels; |
| } |
| |
| public ConstraintsInstance newInstance() |
| { |
| if( parameterConstraintModels.isEmpty() ) |
| { |
| return EMPTY_CONSTRAINTS; |
| } |
| else |
| { |
| List<ValueConstraintsInstance> parameterConstraintsInstances = new ArrayList<ValueConstraintsInstance>( parameterConstraintModels |
| .size() ); |
| for( ValueConstraintsModel parameterConstraintModel : parameterConstraintModels ) |
| { |
| parameterConstraintsInstances.add( parameterConstraintModel.newInstance() ); |
| } |
| return new ConstraintsInstance( parameterConstraintsInstances ); |
| } |
| } |
| |
| @Override |
| public <ThrowableType extends Throwable> boolean accept( HierarchicalVisitor<? super Object, ? super Object, ThrowableType> modelVisitor ) |
| throws ThrowableType |
| { |
| if( modelVisitor.visitEnter( this ) ) |
| { |
| if( parameterConstraintModels != null ) |
| { |
| for( ValueConstraintsModel parameterConstraintModel : parameterConstraintModels ) |
| { |
| if( !parameterConstraintModel.accept( modelVisitor ) ) |
| { |
| break; |
| } |
| } |
| } |
| } |
| return modelVisitor.visitLeave( this ); |
| } |
| } |