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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.xerces.impl.dv.xs;
import java.math.BigDecimal;
import java.math.BigInteger;
import org.apache.xerces.impl.dv.InvalidDatatypeValueException;
import org.apache.xerces.impl.dv.ValidationContext;
import org.apache.xerces.xs.datatypes.XSDecimal;
/**
* Represent the schema type "decimal"
*
* @xerces.internal
*
* @author Neeraj Bajaj, Sun Microsystems, inc.
* @author Sandy Gao, IBM
*
* @version $Id: DecimalDV.java 446745 2006-09-15 21:43:58Z mrglavas $
*/
public class DecimalDV extends TypeValidator {
public final short getAllowedFacets(){
return ( XSSimpleTypeDecl.FACET_PATTERN | XSSimpleTypeDecl.FACET_WHITESPACE | XSSimpleTypeDecl.FACET_ENUMERATION |XSSimpleTypeDecl.FACET_MAXINCLUSIVE |XSSimpleTypeDecl.FACET_MININCLUSIVE | XSSimpleTypeDecl.FACET_MAXEXCLUSIVE | XSSimpleTypeDecl.FACET_MINEXCLUSIVE | XSSimpleTypeDecl.FACET_TOTALDIGITS | XSSimpleTypeDecl.FACET_FRACTIONDIGITS);
}
public Object getActualValue(String content, ValidationContext context) throws InvalidDatatypeValueException {
try {
return new XDecimal(content);
} catch (NumberFormatException nfe) {
throw new InvalidDatatypeValueException("cvc-datatype-valid.1.2.1", new Object[]{content, "decimal"});
}
}
public final int compare(Object value1, Object value2){
return ((XDecimal)value1).compareTo((XDecimal)value2);
}
public final int getTotalDigits(Object value){
return ((XDecimal)value).totalDigits;
}
public final int getFractionDigits(Object value){
return ((XDecimal)value).fracDigits;
}
// Avoid using the heavy-weight java.math.BigDecimal
static class XDecimal implements XSDecimal {
// sign: 0 for vlaue 0; 1 for positive values; -1 for negative values
int sign = 1;
// total digits. >= 1
int totalDigits = 0;
// integer digits when sign != 0
int intDigits = 0;
// fraction digits when sign != 0
int fracDigits = 0;
// the string representing the integer part
String ivalue = "";
// the string representing the fraction part
String fvalue = "";
// whether the canonical form contains decimal point
boolean integer = false;
XDecimal(String content) throws NumberFormatException {
initD(content);
}
XDecimal(String content, boolean integer) throws NumberFormatException {
if (integer)
initI(content);
else
initD(content);
}
void initD(String content) throws NumberFormatException {
int len = content.length();
if (len == 0)
throw new NumberFormatException();
// these 4 variables are used to indicate where the integre/fraction
// parts start/end.
int intStart = 0, intEnd = 0, fracStart = 0, fracEnd = 0;
// Deal with leading sign symbol if present
if (content.charAt(0) == '+') {
// skip '+', so intStart should be 1
intStart = 1;
}
else if (content.charAt(0) == '-') {
// keep '-', so intStart is stil 0
intStart = 1;
sign = -1;
}
// skip leading zeroes in integer part
int actualIntStart = intStart;
while (actualIntStart < len && content.charAt(actualIntStart) == '0') {
actualIntStart++;
}
// Find the ending position of the integer part
for (intEnd = actualIntStart;
intEnd < len && TypeValidator.isDigit(content.charAt(intEnd));
intEnd++);
// Not reached the end yet
if (intEnd < len) {
// the remaining part is not ".DDD", error
if (content.charAt(intEnd) != '.')
throw new NumberFormatException();
// fraction part starts after '.', and ends at the end of the input
fracStart = intEnd + 1;
fracEnd = len;
}
// no integer part, no fraction part, error.
if (intStart == intEnd && fracStart == fracEnd)
throw new NumberFormatException();
// ignore trailing zeroes in fraction part
while (fracEnd > fracStart && content.charAt(fracEnd-1) == '0') {
fracEnd--;
}
// check whether there is non-digit characters in the fraction part
for (int fracPos = fracStart; fracPos < fracEnd; fracPos++) {
if (!TypeValidator.isDigit(content.charAt(fracPos)))
throw new NumberFormatException();
}
intDigits = intEnd - actualIntStart;
fracDigits = fracEnd - fracStart;
totalDigits = intDigits + fracDigits;
if (intDigits > 0) {
ivalue = content.substring(actualIntStart, intEnd);
if (fracDigits > 0)
fvalue = content.substring(fracStart, fracEnd);
}
else {
if (fracDigits > 0) {
fvalue = content.substring(fracStart, fracEnd);
}
else {
// ".00", treat it as "0"
sign = 0;
}
}
}
void initI(String content) throws NumberFormatException {
int len = content.length();
if (len == 0)
throw new NumberFormatException();
// these 2 variables are used to indicate where the integre start/end.
int intStart = 0, intEnd = 0;
// Deal with leading sign symbol if present
if (content.charAt(0) == '+') {
// skip '+', so intStart should be 1
intStart = 1;
}
else if (content.charAt(0) == '-') {
// keep '-', so intStart is stil 0
intStart = 1;
sign = -1;
}
// skip leading zeroes in integer part
int actualIntStart = intStart;
while (actualIntStart < len && content.charAt(actualIntStart) == '0') {
actualIntStart++;
}
// Find the ending position of the integer part
for (intEnd = actualIntStart;
intEnd < len && TypeValidator.isDigit(content.charAt(intEnd));
intEnd++);
// Not reached the end yet, error
if (intEnd < len)
throw new NumberFormatException();
// no integer part, error.
if (intStart == intEnd)
throw new NumberFormatException();
intDigits = intEnd - actualIntStart;
fracDigits = 0;
totalDigits = intDigits;
if (intDigits > 0) {
ivalue = content.substring(actualIntStart, intEnd);
}
else {
// "00", treat it as "0"
sign = 0;
}
integer = true;
}
public boolean equals(Object val) {
if (val == this)
return true;
if (!(val instanceof XDecimal))
return false;
XDecimal oval = (XDecimal)val;
if (sign != oval.sign)
return false;
if (sign == 0)
return true;
return intDigits == oval.intDigits && fracDigits == oval.fracDigits &&
ivalue.equals(oval.ivalue) && fvalue.equals(oval.fvalue);
}
public int compareTo(XDecimal val) {
if (sign != val.sign)
return sign > val.sign ? 1 : -1;
if (sign == 0)
return 0;
return sign * intComp(val);
}
private int intComp(XDecimal val) {
if (intDigits != val.intDigits)
return intDigits > val.intDigits ? 1 : -1;
int ret = ivalue.compareTo(val.ivalue);
if (ret != 0)
return ret > 0 ? 1 : -1;;
ret = fvalue.compareTo(val.fvalue);
return ret == 0 ? 0 : (ret > 0 ? 1 : -1);
}
private String canonical;
public synchronized String toString() {
if (canonical == null) {
makeCanonical();
}
return canonical;
}
private void makeCanonical() {
if (sign == 0) {
if (integer)
canonical = "0";
else
canonical = "0.0";
return;
}
if (integer && sign > 0) {
canonical = ivalue;
return;
}
// for -0.1, total digits is 1, so we need 3 extra spots
StringBuffer buffer = new StringBuffer(totalDigits+3);
if (sign == -1)
buffer.append('-');
if (intDigits != 0)
buffer.append(ivalue);
else
buffer.append('0');
if (!integer) {
buffer.append('.');
if (fracDigits != 0) {
buffer.append(fvalue);
}
else {
buffer.append('0');
}
}
canonical = buffer.toString();
}
public BigDecimal getBigDecimal() {
if (sign == 0) {
return new BigDecimal(BigInteger.ZERO);
}
return new BigDecimal(toString());
}
public BigInteger getBigInteger() throws NumberFormatException {
if (fracDigits != 0) {
throw new NumberFormatException();
}
if (sign == 0) {
return BigInteger.ZERO;
}
if (sign == 1) {
return new BigInteger(ivalue);
}
return new BigInteger("-" + ivalue);
}
public long getLong() throws NumberFormatException {
if (fracDigits != 0) {
throw new NumberFormatException();
}
if (sign == 0) {
return 0L;
}
if (sign == 1) {
return Long.parseLong(ivalue);
}
return Long.parseLong("-" + ivalue);
}
public int getInt() throws NumberFormatException {
if (fracDigits != 0) {
throw new NumberFormatException();
}
if (sign == 0) {
return 0;
}
if (sign == 1) {
return Integer.parseInt(ivalue);
}
return Integer.parseInt("-" + ivalue);
}
public short getShort() throws NumberFormatException {
if (fracDigits != 0) {
throw new NumberFormatException();
}
if (sign == 0) {
return 0;
}
if (sign == 1) {
return Short.parseShort(ivalue);
}
return Short.parseShort("-" + ivalue);
}
public byte getByte() throws NumberFormatException {
if (fracDigits != 0) {
throw new NumberFormatException();
}
if (sign == 0) {
return 0;
}
if (sign == 1) {
return Byte.parseByte(ivalue);
}
return Byte.parseByte("-" + ivalue);
}
}
} // class DecimalDV
