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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 GYearMonthValue extends DateValue {
22
23 private static Pattern regex =
24 Pattern.compile("(-?[0-9]+-[0-9][0-9])(Z|[+-][0-9][0-9]:[0-9][0-9])?");
25
26 public GYearMonthValue(){};
27
28 public GYearMonthValue(CharSequence value) throws XPathException {
29 Matcher m = regex.matcher(value);
30 if (!m.matches()) {
31 throw new DynamicError("Cannot convert '" + value + "' to a gYearMonth");
32 }
33 String base = m.group(1);
34 String tz = m.group(2);
35 String date = base + "-01" + (tz==null ? "" : tz);
36 setLexicalValue(date);
37 }
38
39 public GYearMonthValue(GregorianCalendar calendar, boolean timezoneSpecified, int tzoffset) {
40 super(calendar, timezoneSpecified, tzoffset);
41 }
42
43
47
48 public ItemType getItemType() {
49 return Type.G_YEAR_MONTH_TYPE;
50 }
51
52
58
59 public AtomicValue convertPrimitive(BuiltInAtomicType requiredType, boolean validate, ConversionContext conversion) {
60 switch(requiredType.getPrimitiveType()) {
61 case Type.G_YEAR_MONTH:
62 case Type.ATOMIC:
63 case Type.ITEM:
64 return this;
65
66 case Type.STRING:
67 return new StringValue(getStringValueCS());
68 case Type.UNTYPED_ATOMIC:
69 return new UntypedAtomicValue(getStringValueCS());
70 default:
71 ValidationException err = new ValidationException("Cannot convert gYearMonth to " +
72 requiredType.getDisplayName());
73 err.setErrorCode("FORG0001");
74 return new ValidationErrorValue(err);
75 }
76 }
77
78 public String getStringValue() {
79
80 FastStringBuffer sb = new FastStringBuffer(16);
81 int era = calendar.get(GregorianCalendar.ERA);
82 int year = calendar.get(Calendar.YEAR);
83 if (era == GregorianCalendar.BC) {
84 sb.append('-');
85 }
86 DateTimeValue.appendString(sb, year, (year>9999 ? (calendar.get(Calendar.YEAR)+"").length() : 4));
87
88 sb.append('-');
89 DateTimeValue.appendString(sb, calendar.get(Calendar.MONTH)+1, 2);
90
91 if (zoneSpecified) {
92 DateTimeValue.appendTimezone(tzOffset, sb);
93 }
94
95 return sb.toString();
96
97 }
98 }
99
100 |
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