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Xerces2 is the next generation of high performance, fully compliant XML parsers in the Apache Xerces family.
This new version of Xerces introduces the Xerces Native Interface (XNI), a complete framework for building
parser components and configurations that is extremely modular and easy to program. The Apache Xerces2 parser is
the reference implementation of XNI but other parser components, configurations, and parsers can be written
using the Xerces Native Interface. For complete design and implementation documents, refer to the XNI Manual.
Xerces2 is a fully conforming XML Schema 1.0 processor. A partial experimental implementation of the XML Schema
1.1 Structures and Datatypes Working Drafts (December 2009) and an experimental implementation of the XML Schema
Definition Language (XSD): Component Designators (SCD) Candidate Recommendation (January 2010) are provided for
evaluation. For more information, refer to the XML Schema page. Xerces2 also provides a complete implementation
of the Document Object Model Level 3 Core and Load/Save W3C Recommendations and provides a complete
implementation of the XML Inclusions (XInclude) W3C Recommendation. It also provides support for OASIS XML
Catalogs v1.1. Xerces2 is able to parse documents written according to the XML 1.1 Recommendation, except that
it does not yet provide an option to enable normalization checking as described in section 2.13 of this
specification. It also handles namespaces according to the XML Namespaces 1.1 Recommendation, and will correctly
serialize XML 1.1 documents if the DOM level 3 load/save APIs are in use.
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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