pruned presentation model system from trunk to move to dev branch as its a 3.1 feature now

This commit is contained in:
Keith Donald 2009-08-05 15:29:26 +00:00
parent 00f90cd816
commit 3ae3196ca7
1 changed files with 0 additions and 95 deletions

View File

@ -1,95 +0,0 @@
/*
* Copyright 2004-2009 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.springframework.ui;
import java.util.Map;
import org.springframework.model.ui.PresentationModel;
import org.springframework.model.ui.PresentationModelFactory;
import org.springframework.model.ui.config.BindingLifecycle;
import org.springframework.model.ui.support.PresentationModelBinder;
/**
* Spring MVC implementation of the Binding Lifecycle.
* @author Keith Donald
*/
public class MvcBindingLifecycle implements BindingLifecycle<Object> {
private Class<?> modelType;
private PresentationModelFactory presentationModelFactory;
private ModelMap modelMap;
private Map<String, ? extends Object> fieldValues;
private Object model;
private PresentationModel presentationModel;
public MvcBindingLifecycle(Class<?> modelType, PresentationModelFactory presentationModelFactory,
ModelMap modelMap, Map<String, ? extends Object> fieldValues) {
this.modelType = modelType;
this.presentationModelFactory = presentationModelFactory;
this.modelMap = modelMap;
this.fieldValues = fieldValues;
}
public void setModel(Object model) {
this.model = model;
}
public void execute() {
boolean bindEagerCommit = false;
if (model == null) {
initModel();
bindEagerCommit = true;
}
modelMap.addAttribute(model);
presentationModel = presentationModelFactory.getPresentationModel(model);
PresentationModelBinder binder = new PresentationModelBinder();
binder.setCommitDirtyValue(bindEagerCommit);
binder.bind(fieldValues, presentationModel);
presentationModel.validate();
if (!presentationModel.hasErrors() && !bindEagerCommit) {
presentationModel.commit();
}
}
public boolean hasErrors() {
return presentationModel.hasErrors();
}
public Object getModel() {
return model;
}
private void initModel() {
try {
if (modelType == null) {
throw new IllegalStateException("Unable to create new model to bind to, no modelType was specified - "
+ "did you parameterize the model <M> for your BindingLifecycle declaration?");
}
model = modelType.newInstance();
} catch (InstantiationException e) {
throw new IllegalStateException("Model of type [" + modelType.getName()
+ "] does not have a default constructor");
} catch (IllegalAccessException e) {
throw new IllegalStateException("Model of type [" + modelType.getName()
+ "] does not have a public default constructor");
}
}
}