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- /* ====================================================================
- 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.ss.format;
-
- import java.util.HashMap;
- import java.util.Map;
-
- /**
- * This object represents a condition in a cell format.
- *
- * @author Ken Arnold, Industrious Media LLC
- */
- public abstract class CellFormatCondition {
- private static final int LT = 0;
- private static final int LE = 1;
- private static final int GT = 2;
- private static final int GE = 3;
- private static final int EQ = 4;
- private static final int NE = 5;
-
- private static final Map<String, Integer> TESTS;
-
- static {
- TESTS = new HashMap<String, Integer>();
- TESTS.put("<", LT);
- TESTS.put("<=", LE);
- TESTS.put(">", GT);
- TESTS.put(">=", GE);
- TESTS.put("=", EQ);
- TESTS.put("==", EQ);
- TESTS.put("!=", NE);
- TESTS.put("<>", NE);
- }
-
- /**
- * Returns an instance of a condition object.
- *
- * @param opString The operator as a string. One of <tt>"<"</tt>,
- * <tt>"<="</tt>, <tt>">"</tt>, <tt>">="</tt>,
- * <tt>"="</tt>, <tt>"=="</tt>, <tt>"!="</tt>, or
- * <tt>"<>"</tt>.
- * @param constStr The constant (such as <tt>"12"</tt>).
- *
- * @return A condition object for the given condition.
- */
- public static CellFormatCondition getInstance(String opString,
- String constStr) {
-
- if (!TESTS.containsKey(opString))
- throw new IllegalArgumentException("Unknown test: " + opString);
- int test = TESTS.get(opString);
-
- final double c = Double.parseDouble(constStr);
-
- switch (test) {
- case LT:
- return new CellFormatCondition() {
- public boolean pass(double value) {
- return value < c;
- }
- };
- case LE:
- return new CellFormatCondition() {
- public boolean pass(double value) {
- return value <= c;
- }
- };
- case GT:
- return new CellFormatCondition() {
- public boolean pass(double value) {
- return value > c;
- }
- };
- case GE:
- return new CellFormatCondition() {
- public boolean pass(double value) {
- return value >= c;
- }
- };
- case EQ:
- return new CellFormatCondition() {
- public boolean pass(double value) {
- return value == c;
- }
- };
- case NE:
- return new CellFormatCondition() {
- public boolean pass(double value) {
- return value != c;
- }
- };
- default:
- throw new IllegalArgumentException(
- "Cannot create for test number " + test + "(\"" + opString +
- "\")");
- }
- }
-
- /**
- * Returns <tt>true</tt> if the given value passes the constraint's test.
- *
- * @param value The value to compare against.
- *
- * @return <tt>true</tt> if the given value passes the constraint's test.
- */
- public abstract boolean pass(double value);
- }
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