| /* Copyright 2004 The Apache Software Foundation |
| * |
| * Licensed 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.xmlbeans.impl.values; |
| |
| import java.math.BigDecimal; |
| import java.math.BigInteger; |
| |
| import org.apache.xmlbeans.SchemaType; |
| import org.apache.xmlbeans.XmlObject; |
| import org.apache.xmlbeans.impl.common.ValidationContext; |
| import org.apache.xmlbeans.impl.schema.BuiltinSchemaTypeSystem; |
| |
| public class JavaDecimalHolder extends XmlObjectBase |
| { |
| public SchemaType schemaType() |
| { return BuiltinSchemaTypeSystem.ST_DECIMAL; } |
| |
| private BigDecimal _value; |
| |
| // SIMPLE VALUE ACCESSORS BELOW ------------------------------------------- |
| |
| // sets/gets raw text value |
| protected String compute_text(NamespaceManager nsm) { return _value.toString(); } |
| protected void set_text(String s) |
| { |
| if (_validateOnSet()) |
| validateLexical(s, _voorVc); |
| |
| try { |
| set_BigDecimal(new BigDecimal(s)); |
| } |
| catch (NumberFormatException e) |
| { |
| _voorVc.invalid("Invalid Decimal"); |
| } |
| } |
| protected void set_nil() |
| { |
| _value = null; |
| } |
| |
| /** |
| * Performs lexical validation only. |
| */ |
| |
| public static void validateLexical(String v, ValidationContext context) |
| { |
| // TODO - will want to validate Chars with built in white space handling |
| // However, this fcn sometimes takes a value with wsr applied |
| // already |
| int l = v.length(); |
| int i = 0; |
| |
| if (i < l) |
| { |
| int ch = v.charAt(i); |
| |
| if (ch == '+' || ch == '-') |
| i++; |
| } |
| |
| boolean sawDot = false; |
| boolean sawDigit = false; |
| |
| for ( ; i < l ; i++ ) |
| { |
| int ch = v.charAt(i); |
| |
| if (ch == '.') |
| { |
| if (sawDot) |
| { |
| context.invalid("Illegal decimal, saw '.' more than once"); |
| return; |
| } |
| |
| sawDot = true; |
| } |
| else if (ch >= '0' && ch <= '9') |
| { |
| sawDigit = true; |
| } |
| else |
| { |
| // TODO - may need to escape error char |
| context.invalid("Illegal decimal, unexpected char: " + ch); |
| return; |
| } |
| } |
| |
| if (!sawDigit) |
| { |
| context.invalid("Illegal decimal, expected at least one digit"); |
| return; |
| } |
| } |
| |
| // numerics: fractional |
| public BigDecimal bigDecimalValue() { check_dated(); return _value; } |
| |
| // setters |
| protected void set_BigDecimal(BigDecimal v) { _value = v; } |
| |
| // comparators |
| protected int compare_to(XmlObject decimal) |
| { |
| return _value.compareTo(((XmlObjectBase)decimal).bigDecimalValue()); |
| } |
| protected boolean equal_to(XmlObject decimal) |
| { |
| return (_value.compareTo(((XmlObjectBase)decimal).bigDecimalValue())) == 0; |
| } |
| |
| static private BigInteger _maxlong = BigInteger.valueOf(Long.MAX_VALUE); |
| static private BigInteger _minlong = BigInteger.valueOf(Long.MIN_VALUE); |
| |
| /** |
| * Note, this is carefully aligned with hash codes for all xsd:decimal |
| * primitives. |
| */ |
| protected int value_hash_code() |
| { |
| if (_value.scale() > 0) |
| { |
| if (_value.setScale(0, BigDecimal.ROUND_DOWN).compareTo(_value) != 0) |
| return decimalHashCode(); |
| } |
| |
| BigInteger intval = _value.toBigInteger(); |
| |
| if (intval.compareTo(_maxlong) > 0 || |
| intval.compareTo(_minlong) < 0) |
| return intval.hashCode(); |
| |
| long longval = intval.longValue(); |
| |
| return (int)((longval >> 32) * 19 + longval); |
| } |
| |
| /** |
| * This method will has BigDecimals with the same arithmetic value to |
| * the same hash code (eg, 2.3 & 2.30 will have the same hash.) |
| * This differs from BigDecimal.hashCode() |
| */ |
| protected int decimalHashCode() { |
| assert _value.scale() > 0; |
| |
| // Get decimal value as string, and strip off zeroes on the right |
| String strValue = _value.toString(); |
| int i; |
| for (i = strValue.length() - 1 ; i >= 0 ; i --) |
| if (strValue.charAt(i) != '0') break; |
| |
| assert strValue.indexOf('.') < i; |
| |
| // Return the canonicalized string hashcode |
| return strValue.substring(0, i + 1).hashCode(); |
| } |
| } |