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1 package net.sf.saxon.value;
2
3 import net.sf.saxon.om.FastStringBuffer;
4 import net.sf.saxon.trans.DynamicError;
5 import net.sf.saxon.trans.XPathException;
6 import net.sf.saxon.type.BuiltInAtomicType;
7 import net.sf.saxon.type.ItemType;
8 import net.sf.saxon.type.Type;
9 import net.sf.saxon.type.ValidationException;
10 import net.sf.saxon.ConversionContext;
11
12 import java.util.Calendar  ;
13 import java.util.GregorianCalendar ;
14 import java.util.regex.Matcher ;
15 import java.util.regex.Pattern ;
16
17
20
21 public class GYearValue extends DateValue {
22
23 private static Pattern regex =
24 Pattern.compile("(-?[0-9]+)(Z|[+-][0-9][0-9]:[0-9][0-9])?");
25
26 public GYearValue(){};
27
28 public GYearValue(CharSequence value) throws XPathException {
29 Matcher m = regex.matcher(value);
30 if (!m.matches()) {
31 throw new DynamicError("Cannot convert '" + value + "' to a gYear");
32 }
33 String base = m.group(1);
34 String tz = m.group(2);
35 String date = base + "-01-01" + (tz==null ? "" : tz);
36 setLexicalValue(date);
37 }
38
39 public GYearValue(GregorianCalendar calendar, boolean timezoneSpecified, int tzoffset) {
40 super(calendar, timezoneSpecified, tzoffset);
41 }
42
43
47
48 public ItemType getItemType() {
49 return Type.G_YEAR_TYPE;
50 }
51
52
53
59
60 public AtomicValue convertPrimitive(BuiltInAtomicType requiredType, boolean validate, ConversionContext conversion) {
61 switch(requiredType.getPrimitiveType()) {
62 case Type.G_YEAR:
63 case Type.ATOMIC:
64 case Type.ITEM:
65 return this;
66
67 case Type.STRING:
68 return new StringValue(getStringValueCS());
69 case Type.UNTYPED_ATOMIC:
70 return new UntypedAtomicValue(getStringValueCS());
71 default:
72 ValidationException err = new ValidationException("Cannot convert gYear to " +
73 requiredType.getDisplayName());
74 err.setErrorCode("FORG0001");
75 return new ValidationErrorValue(err);
76 }
77 }
78
79 public String getStringValue() {
80
81 FastStringBuffer sb = new FastStringBuffer(16);
82 int era = calendar.get(GregorianCalendar.ERA);
83 int year = calendar.get(Calendar.YEAR);
84 if (era == GregorianCalendar.BC) {
85 sb.append('-');
86 }
87 DateTimeValue.appendString(sb, year, (year>9999 ? (calendar.get(Calendar.YEAR)+"").length() : 4));
88
89 if (zoneSpecified) {
90 DateTimeValue.appendTimezone(tzOffset, sb);
91 }
92
93 return sb.toString();
94
95 }
96 }
97
98 |
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