ylbtech-package-org.springframework.ui-interface：Model.class

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/*
* Copyright 2002-2012 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.Collection;
import java.util.Map;

/**
* Java-5-specific interface that defines a holder for model attributes.
* Primarily designed for adding attributes to the model.
* Allows for accessing the overall model as a {@code java.util.Map}.
*
* @author Juergen Hoeller
* @since 2.5.1
*/
public interface Model {

/\*\*  
 \* Add the supplied attribute under the supplied name.  
 \* @param attributeName the name of the model attribute (never {@code null})  
 \* @param attributeValue the model attribute value (can be {@code null})  
 \*/  
Model addAttribute(String attributeName, Object attributeValue);

/\*\*  
 \* Add the supplied attribute to this {@code Map} using a  
 \* {@link org.springframework.core.Conventions#getVariableName generated name}.  
 \* <p><emphasis>Note: Empty {@link java.util.Collection Collections} are not added to  
 \* the model when using this method because we cannot correctly determine  
 \* the true convention name. View code should check for {@code null} rather  
 \* than for empty collections as is already done by JSTL tags.</emphasis>  
 \* @param attributeValue the model attribute value (never {@code null})  
 \*/  
Model addAttribute(Object attributeValue);

/\*\*  
 \* Copy all attributes in the supplied {@code Collection} into this  
 \* {@code Map}, using attribute name generation for each element.  
 \* @see #addAttribute(Object)  
 \*/  
Model addAllAttributes(Collection<?> attributeValues);

/\*\*  
 \* Copy all attributes in the supplied {@code Map} into this {@code Map}.  
 \* @see #addAttribute(String, Object)  
 \*/  
Model addAllAttributes(Map<String, ?> attributes);

/\*\*  
 \* Copy all attributes in the supplied {@code Map} into this {@code Map},  
 \* with existing objects of the same name taking precedence (i.e. not getting  
 \* replaced).  
 \*/  
Model mergeAttributes(Map<String, ?> attributes);

/\*\*  
 \* Does this model contain an attribute of the given name?  
 \* @param attributeName the name of the model attribute (never {@code null})  
 \* @return whether this model contains a corresponding attribute  
 \*/  
boolean containsAttribute(String attributeName);

/\*\*  
 \* Return the current set of model attributes as a Map.  
 \*/  
Map<String, Object> asMap();

}

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作者：ylbtech
出处：http://ylbtech.cnblogs.com/
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