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1
22
23 package org.xquark.schema.datatypes;
24
25 import java.text.DecimalFormat  ;
26 import java.util.Locale ;
27
28 import org.xquark.schema.SchemaException;
29 import org.xquark.schema.validation.ValidationContextProvider;
30
31
32 class DoubleType extends ComparableType {
33 private static final String RCSRevision = "$Revision: 1.3 $";
34 private static final String RCSName = "$Name: $";
35
36 private static final String NAN = "NaN";
37 private static final String INF = "INF";
38 private static final String POSITIVE_INF = "+INF";
39 private static final String NEGATIVE_INF = "-INF";
40
41 private DecimalFormat format = null;
42
43 DoubleType() {
44 super("double", PrimitiveType.DOUBLE);
45 format = (DecimalFormat )DecimalFormat.getInstance(Locale.US);
46 format.applyPattern("0.0##############E0");
47 }
48
49 public Object toValidType(Object data) {
50 if (data instanceof Double ) {
51 return data;
52 } else if (data instanceof Number ) {
53 return new Double (((Number )data).doubleValue());
54 } else {
55 return (Double )data;
56 }
57 }
58
59 protected Comparable toComparable(String value) throws SchemaException {
60 if (INF.equals(value))
62 return new Double (Double.POSITIVE_INFINITY);
63 else if (POSITIVE_INF.equals(value))
64 return new Double (Double.POSITIVE_INFINITY);
65 else if (NEGATIVE_INF.equals(value))
66 return new Double (Double.NEGATIVE_INFINITY);
67 else if (NAN.equals(value))
68 return new Double (Double.NaN);
69 try {
71 return new Double (value);
72 } catch (NumberFormatException nfe) {
73 super.invalidValue(value);
74 return null;
75 }
76 }
77
78 public String toXMLString(Object obj, ValidationContextProvider context) {
79 if (obj == null) return null;
80 Double data = (Double )obj;
81 if (data.isNaN()) return NAN;
82 else if (data.isInfinite()) {
83 if (data.doubleValue() > 0) return INF;
84 else return NEGATIVE_INF;
85 } else {
86 return format.format(data.doubleValue());
87 }
88 }
89 }
90 |
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