001// Copyright 2004, 2005 The Apache Software Foundation 002// 003// Licensed under the Apache License, Version 2.0 (the "License"); 004// you may not use this file except in compliance with the License. 005// You may obtain a copy of the License at 006// 007// http://www.apache.org/licenses/LICENSE-2.0 008// 009// Unless required by applicable law or agreed to in writing, software 010// distributed under the License is distributed on an "AS IS" BASIS, 011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012// See the License for the specific language governing permissions and 013// limitations under the License. 014 015package org.apache.tapestry.spec; 016 017import org.apache.hivemind.Locatable; 018import org.apache.hivemind.LocationHolder; 019 020/** 021 * Stores a binding specification, which identifies the static value or OGNL expression for the 022 * binding. The name of the binding (which matches a bindable property of the contined component) is 023 * implicitly known. 024 * 025 * @author glongman@intelligentworks.com 026 */ 027public interface IBindingSpecification extends LocationHolder, Locatable 028{ 029 /** 030 * Returns the type of binding specification; this is generally 031 * {@link org.apache.tapestry.spec.BindingType#PREFIXED}. 032 */ 033 034 public BindingType getType(); 035 036 /** 037 * For a prefixed binding specification (the typical type), the value is a binding reference; a 038 * string used to contruct the actual binding, and consists of a prefix (such as "ognl:" or 039 * "message:") and a locator. The prefix selects a 040 * {@link org.apache.tapestry.binding.BindingFactory}, and the locator is passed to the 041 * factory, which uses it to construct the {@link org.apache.tapestry.IBinding}instance. 042 */ 043 044 public String getValue(); 045 046 public void setType(BindingType type); 047 048 public void setValue(String value); 049}