| // Copyright 2004, 2005 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.tapestry.services; |
| |
| /** |
| * Cache of compiled OGNL expressions. |
| * |
| * @author Howard M. Lewis Ship |
| * @since 4.0 |
| */ |
| public interface ExpressionCache |
| { |
| |
| /** |
| * Returns the compiled form of the OGNL expression. |
| * |
| * @throws org.apache.hivemind.ApplicationRuntimeException |
| * if the expression is not valid |
| */ |
| Object getCompiledExpression(String expression); |
| |
| /** |
| * Returns the compiled ognl expression for the given target object class / expression |
| * combination. |
| * |
| * @param target |
| * The object this expression is to be used for. |
| * @param expression |
| * The expression. |
| * @return |
| * The compiled (or new if neccessary) ognl statement. |
| */ |
| Object getCompiledExpression(Object target, String expression); |
| } |