Clover coverage report - Code Coverage for tapestry release 4.0-beta-2
Coverage timestamp: Sat Jul 9 2005 22:02:17 EDT
file stats: LOC: 57   Methods: 0
NCLOC: 7   Classes: 1
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 Source file Conditionals Statements Methods TOTAL
AttributeHolder.java - - - -
coverage
 1    // Copyright 2005 The Apache Software Foundation
 2    //
 3    // Licensed under the Apache License, Version 2.0 (the "License");
 4    // you may not use this file except in compliance with the License.
 5    // You may obtain a copy of the License at
 6    //
 7    // http://www.apache.org/licenses/LICENSE-2.0
 8    //
 9    // Unless required by applicable law or agreed to in writing, software
 10    // distributed under the License is distributed on an "AS IS" BASIS,
 11    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 12    // See the License for the specific language governing permissions and
 13    // limitations under the License.
 14   
 15    package org.apache.tapestry.web;
 16   
 17    import java.util.List;
 18   
 19    /**
 20    * Interface for objects that can hold attributes. Attributes are objects that are stored and
 21    * retrieved using unique string names. There may be constraints on when attributes can be accessed
 22    * (for example, {@link org.apache.tapestry.web.WebSession}attributes should not be
 23    * changed once the response is committed).
 24    *
 25    * @author Howard M. Lewis Ship
 26    * @since 4.0
 27    */
 28    public interface AttributeHolder
 29    {
 30    /**
 31    * Returns a list of all known attributes in ascending alphabetical order. May be empty (but
 32    * won't be null).
 33    *
 34    * @returns Unmodifiable list of string attribute names.
 35    */
 36   
 37    public List getAttributeNames();
 38   
 39    /**
 40    * Returns the named object, or null if no attribute has been stored with the given name.
 41    */
 42   
 43    public Object getAttribute(String name);
 44   
 45    /**
 46    * Updates the attribute, replacing (or removing) its value. For certain implementations, the
 47    * attribute may need to be serializable (for example, a {@link WebSession}
 48    *  attribute in a clustered application).
 49    *
 50    * @param name
 51    * the name of the attribute to update
 52    * @param attribute
 53    * the new value for the attribute, or null to delete the attribute entirely.
 54    */
 55   
 56    public void setAttribute(String name, Object attribute);
 57    }