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Java > Open Source Codes > com > sun > org > apache > xerces > internal > impl > dv > xs > YearDV


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57
58 package com.sun.org.apache.xerces.internal.impl.dv.xs;
59
60 import com.sun.org.apache.xerces.internal.impl.dv.InvalidDatatypeValueException;
61 import com.sun.org.apache.xerces.internal.impl.dv.ValidationContext;
62
63 /**
64  * Validator for <gYear> datatype (W3C Schema Datatypes)
65  *
66  * @author Elena Litani
67  * @author Gopal Sharma, SUN Microsystem Inc.
68  *
69  * @version $Id: YearDV.java,v 1.7 2003/01/16 18:34:04 sandygao Exp $
70  */

71
72 public class YearDV extends AbstractDateTimeDV {
73
74     /**
75      * Convert a string to a compiled form
76      *
77      * @param content The lexical representation of time
78      * @return a valid and normalized time object
79      */

80     public Object JavaDoc getActualValue(String JavaDoc content, ValidationContext context) throws InvalidDatatypeValueException{
81         try{
82             return new DateTimeData(parse(content), this);
83         } catch(Exception JavaDoc ex){
84             throw new InvalidDatatypeValueException("cvc-datatype-valid.1.2.1", new Object JavaDoc[]{content, "gYear"});
85         }
86     }
87
88     /**
89      * Parses, validates and computes normalized version of gYear object
90      *
91      * @param str The lexical representation of year object CCYY
92      * with possible time zone Z or (-),(+)hh:mm
93      * @param date uninitialized date object
94      * @return normalized date representation
95      * @exception SchemaDateTimeException Invalid lexical representation
96      */

97     protected int[] parse(String JavaDoc str) throws SchemaDateTimeException{
98         int len = str.length();
99         int[] date = new int[TOTAL_SIZE];
100         int[] timeZone = new int[2];
101
102         // check for preceding '-' sign
103
int start = 0;
104         if (str.charAt(0)=='-') {
105             start = 1;
106         }
107         int sign = findUTCSign(str, start, len);
108         if (sign == -1) {
109             date[CY]=parseIntYear(str, len);
110         }
111         else {
112             date[CY]=parseIntYear(str, sign);
113             getTimeZone (str, date, sign, len, timeZone);
114         }
115
116         //initialize values
117
date[M]=MONTH;
118         date[D]=1;
119
120         //validate and normalize
121
validateDateTime(date, timeZone);
122
123         if ( date[utc]!=0 && date[utc]!='Z' ) {
124             normalize(date, timeZone);
125         }
126         return date;
127     }
128
129     /**
130      * Converts year object representation to String
131      *
132      * @param date year object
133      * @return lexical representation of month: CCYY with optional time zone sign
134      */

135     protected String JavaDoc dateToString(int[] date) {
136         StringBuffer JavaDoc message = new StringBuffer JavaDoc(5);
137         append(message, date[CY], 4);
138         append(message, (char)date[utc], 0);
139         return message.toString();
140     }
141
142 }
143
144
145
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