    001    // Copyright 2006, 2007, 2010 The Apache Software Foundation
    002    //
    003    // Licensed under the Apache License, Version 2.0 (the "License");
    004    // you may not use this file except in compliance with the License.
    005    // You may obtain a copy of the License at
    006    //
    007    // http://www.apache.org/licenses/LICENSE-2.0
    008    //
    009    // Unless required by applicable law or agreed to in writing, software
    010    // distributed under the License is distributed on an "AS IS" BASIS,
    011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012    // See the License for the specific language governing permissions and
    013    // limitations under the License.
    014
    015    package org.apache.tapestry5.internal.services;
    016
    017    import org.apache.tapestry5.ioc.internal.util.InternalUtils;
    018    import org.apache.tapestry5.services.PersistentFieldChange;
    019
    020    public class PersistentFieldChangeImpl implements PersistentFieldChange
    021    {
    022        private final String componentId;
    023
    024        private final String fieldName;
    025
    026        private final Object value;
    027
    028        public PersistentFieldChangeImpl(final String componentId, final String fieldName, final Object value)
    029        {
    030            assert componentId != null;
    031            assert InternalUtils.isNonBlank(fieldName);
    032
    033            this.componentId = componentId;
    034            this.fieldName = fieldName;
    035            this.value = value;
    036        }
    037
    038        public String getComponentId()
    039        {
    040            return componentId;
    041        }
    042
    043        public String getFieldName()
    044        {
    045            return fieldName;
    046        }
    047
    048        public Object getValue()
    049        {
    050            return value;
    051        }
    052    }