1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556 |
- /* ====================================================================
- Licensed to the Apache Software Foundation (ASF) under one or more
- contributor license agreements. See the NOTICE file distributed with
- this work for additional information regarding copyright ownership.
- The ASF licenses this file to You 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.poi.hssf.record.formula.toolpack;
-
- import org.apache.poi.hssf.record.formula.functions.FreeRefFunction;
-
- /**
- * Common interface for any new tool pack with executors for functions.
- *
- * @author PUdalau
- */
- public interface ToolPack {
- /**
- * Returns executor by specified name. Returns <code>null</code> if tool
- * pack doesn't contains such function.
- *
- * @param name Name of function.
- * @return Function executor.
- */
- FreeRefFunction findFunction(String name);
-
- /**
- * Add new function with executor.
- * @param name Name of function.
- * @param evaluator Function executor.
- */
- void addFunction(String name, FreeRefFunction evaluator);
-
- /**
- * Returns executor by specified name if it exists.
- * @param name Name of function.
- */
- void removeFunction(String name);
-
- /**
- * Checks if such function exists in tool pack.
- * @param name Name of function.
- * @return true if tool pack contains such function.
- */
- boolean containsFunction(String name);
- }
|