01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17: /*
18: * Created on May 8, 2005
19: *
20: */
21: package org.apache.poi.hssf.record.formula.eval;
22:
23: import org.apache.poi.hssf.record.formula.IntPtg;
24: import org.apache.poi.hssf.record.formula.NumberPtg;
25: import org.apache.poi.hssf.record.formula.Ptg;
26:
27: /**
28: * @author Amol S. Deshmukh < amolweb at ya hoo dot com >
29: *
30: */
31: public class NumberEval implements NumericValueEval, StringValueEval {
32:
33: public static final NumberEval ZERO = new NumberEval(0);
34:
35: private double value;
36: private String stringValue;
37:
38: public NumberEval(Ptg ptg) {
39: if (ptg instanceof IntPtg) {
40: this .value = ((IntPtg) ptg).getValue();
41: } else if (ptg instanceof NumberPtg) {
42: this .value = ((NumberPtg) ptg).getValue();
43: }
44: }
45:
46: public NumberEval(double value) {
47: this .value = value;
48: }
49:
50: public double getNumberValue() {
51: return value;
52: }
53:
54: public String getStringValue() { // TODO: limit to 15 decimal places
55: if (stringValue == null)
56: makeString();
57: return stringValue;
58: }
59:
60: protected void makeString() {
61: if (!Double.isNaN(value)) {
62: long lvalue = Math.round(value);
63: if (lvalue == value) {
64: stringValue = String.valueOf(lvalue);
65: } else {
66: stringValue = String.valueOf(value);
67: }
68: }
69: }
70:
71: }
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