55 lines
2.3 KiB
Java
55 lines
2.3 KiB
Java
/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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package org.apache.poi.ss.formula;
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import org.apache.poi.ss.formula.eval.ValueEval;
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/**
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* Tests can implement this class to track the internal working of the {@link WorkbookEvaluator}.<br/>
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*
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* For POI internal testing use only
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*
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* @author Josh Micich
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*/
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interface IEvaluationListener {
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/**
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* A (mostly) opaque interface to allow test clients to trace cache values
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* Each spreadsheet cell gets one unique cache entry instance. These objects
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* are safe to use as keys in {@link java.util.HashMap}s
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*/
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interface ICacheEntry {
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ValueEval getValue();
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}
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void onCacheHit(int sheetIndex, int rowIndex, int columnIndex, ValueEval result);
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void onReadPlainValue(int sheetIndex, int rowIndex, int columnIndex, ICacheEntry entry);
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void onStartEvaluate(EvaluationCell cell, ICacheEntry entry);
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void onEndEvaluate(ICacheEntry entry, ValueEval result);
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void onClearWholeCache();
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void onClearCachedValue(ICacheEntry entry);
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/**
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* Internally, formula {@link ICacheEntry}s are stored in sets which may change ordering due
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* to seemingly trivial changes. This method is provided to make the order of call-backs to
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* {@link #onClearDependentCachedValue(ICacheEntry, int)} more deterministic.
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*/
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void sortDependentCachedValues(ICacheEntry[] formulaCells);
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void onClearDependentCachedValue(ICacheEntry formulaCell, int depth);
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void onChangeFromBlankValue(int sheetIndex, int rowIndex, int columnIndex,
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EvaluationCell cell, ICacheEntry entry);
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}
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