pruned presentation model system from trunk to move to dev branch as its a 3.1 feature now
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@ -1,95 +0,0 @@
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/*
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* Copyright 2004-2009 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.ui;
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import java.util.Map;
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import org.springframework.model.ui.PresentationModel;
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import org.springframework.model.ui.PresentationModelFactory;
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import org.springframework.model.ui.config.BindingLifecycle;
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import org.springframework.model.ui.support.PresentationModelBinder;
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/**
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* Spring MVC implementation of the Binding Lifecycle.
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* @author Keith Donald
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*/
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public class MvcBindingLifecycle implements BindingLifecycle<Object> {
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private Class<?> modelType;
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private PresentationModelFactory presentationModelFactory;
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private ModelMap modelMap;
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private Map<String, ? extends Object> fieldValues;
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private Object model;
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private PresentationModel presentationModel;
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public MvcBindingLifecycle(Class<?> modelType, PresentationModelFactory presentationModelFactory,
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ModelMap modelMap, Map<String, ? extends Object> fieldValues) {
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this.modelType = modelType;
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this.presentationModelFactory = presentationModelFactory;
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this.modelMap = modelMap;
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this.fieldValues = fieldValues;
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}
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public void setModel(Object model) {
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this.model = model;
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}
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public void execute() {
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boolean bindEagerCommit = false;
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if (model == null) {
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initModel();
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bindEagerCommit = true;
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}
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modelMap.addAttribute(model);
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presentationModel = presentationModelFactory.getPresentationModel(model);
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PresentationModelBinder binder = new PresentationModelBinder();
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binder.setCommitDirtyValue(bindEagerCommit);
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binder.bind(fieldValues, presentationModel);
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presentationModel.validate();
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if (!presentationModel.hasErrors() && !bindEagerCommit) {
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presentationModel.commit();
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}
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}
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public boolean hasErrors() {
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return presentationModel.hasErrors();
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}
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public Object getModel() {
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return model;
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}
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private void initModel() {
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try {
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if (modelType == null) {
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throw new IllegalStateException("Unable to create new model to bind to, no modelType was specified - "
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+ "did you parameterize the model <M> for your BindingLifecycle declaration?");
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}
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model = modelType.newInstance();
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} catch (InstantiationException e) {
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throw new IllegalStateException("Model of type [" + modelType.getName()
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+ "] does not have a default constructor");
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} catch (IllegalAccessException e) {
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throw new IllegalStateException("Model of type [" + modelType.getName()
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+ "] does not have a public default constructor");
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}
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}
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}
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