| // Copyright 2006 The Apache Software Foundation |
| // |
| // 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.apache.tapestry5.ioc.services; |
| |
| /** |
| * A provider of values for symbols. |
| */ |
| public interface SymbolProvider |
| { |
| /** |
| * Returns the value for the symbol, or null if this provider can not provide a value. The value itself may contain |
| * symbols that will be recursively expanded. |
| * |
| * @param symbolName |
| * @return the value or null |
| */ |
| String valueForSymbol(String symbolName); |
| } |
