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}.     * 
       
        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.
            * @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
       
         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
        
          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
         
           asMap();}
         
        
       

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