001/* 002 * Portions of this software was developed by employees of the National Institute 003 * of Standards and Technology (NIST), an agency of the Federal Government and is 004 * being made available as a public service. Pursuant to title 17 United States 005 * Code Section 105, works of NIST employees are not subject to copyright 006 * protection in the United States. This software may be subject to foreign 007 * copyright. Permission in the United States and in foreign countries, to the 008 * extent that NIST may hold copyright, to use, copy, modify, create derivative 009 * works, and distribute this software and its documentation without fee is hereby 010 * granted on a non-exclusive basis, provided that this notice and disclaimer 011 * of warranty appears in all copies. 012 * 013 * THE SOFTWARE IS PROVIDED 'AS IS' WITHOUT ANY WARRANTY OF ANY KIND, EITHER 014 * EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY 015 * THAT THE SOFTWARE WILL CONFORM TO SPECIFICATIONS, ANY IMPLIED WARRANTIES OF 016 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND FREEDOM FROM 017 * INFRINGEMENT, AND ANY WARRANTY THAT THE DOCUMENTATION WILL CONFORM TO THE 018 * SOFTWARE, OR ANY WARRANTY THAT THE SOFTWARE WILL BE ERROR FREE. IN NO EVENT 019 * SHALL NIST BE LIABLE FOR ANY DAMAGES, INCLUDING, BUT NOT LIMITED TO, DIRECT, 020 * INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF, RESULTING FROM, 021 * OR IN ANY WAY CONNECTED WITH THIS SOFTWARE, WHETHER OR NOT BASED UPON WARRANTY, 022 * CONTRACT, TORT, OR OTHERWISE, WHETHER OR NOT INJURY WAS SUSTAINED BY PERSONS OR 023 * PROPERTY OR OTHERWISE, AND WHETHER OR NOT LOSS WAS SUSTAINED FROM, OR AROSE OUT 024 * OF THE RESULTS OF, OR USE OF, THE SOFTWARE OR SERVICES PROVIDED HEREUNDER. 025 */ 026 027package gov.nist.secauto.metaschema.core.datatype.adapter; 028 029import com.fasterxml.jackson.core.JsonGenerator; 030import com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatTypes; 031 032import gov.nist.secauto.metaschema.core.datatype.AbstractDataTypeAdapter; 033import gov.nist.secauto.metaschema.core.metapath.item.atomic.IAnyAtomicItem; 034import gov.nist.secauto.metaschema.core.metapath.item.atomic.IBooleanItem; 035import gov.nist.secauto.metaschema.core.metapath.item.atomic.IDecimalItem; 036import gov.nist.secauto.metaschema.core.metapath.item.atomic.IIntegerItem; 037import gov.nist.secauto.metaschema.core.metapath.item.atomic.INumericItem; 038import gov.nist.secauto.metaschema.core.util.ObjectUtils; 039 040import java.io.IOException; 041import java.math.BigDecimal; 042import java.math.MathContext; 043import java.util.List; 044 045import edu.umd.cs.findbugs.annotations.NonNull; 046 047public class DecimalAdapter 048 extends AbstractDataTypeAdapter<BigDecimal, IDecimalItem> { 049 public static final MathContext MATH_CONTEXT = MathContext.DECIMAL64; 050 @NonNull 051 private static final BigDecimal DECIMAL_BOOLEAN_TRUE = new BigDecimal("1.0"); 052 @NonNull 053 private static final BigDecimal DECIMAL_BOOLEAN_FALSE = new BigDecimal("0.0"); 054 @NonNull 055 private static final List<String> NAMES = ObjectUtils.notNull( 056 List.of("decimal")); 057 058 DecimalAdapter() { 059 super(BigDecimal.class); 060 } 061 062 @Override 063 public List<String> getNames() { 064 return NAMES; 065 } 066 067 @Override 068 public JsonFormatTypes getJsonRawType() { 069 return JsonFormatTypes.NUMBER; 070 } 071 072 @Override 073 public BigDecimal parse(String value) { 074 return new BigDecimal(value, MATH_CONTEXT); 075 } 076 077 @Override 078 public void writeJsonValue(Object value, JsonGenerator generator) throws IOException { 079 try { 080 generator.writeNumber((BigDecimal) value); 081 } catch (ClassCastException ex) { 082 throw new IOException(ex); 083 } 084 } 085 086 @Override 087 public BigDecimal copy(Object obj) { 088 // a BigDecimal is immutable 089 return (BigDecimal) obj; 090 } 091 092 @Override 093 public Class<IDecimalItem> getItemClass() { 094 return IDecimalItem.class; 095 } 096 097 @Override 098 public IDecimalItem newItem(Object value) { 099 BigDecimal item = toValue(value); 100 return IDecimalItem.valueOf(item); 101 } 102 103 @Override 104 protected IDecimalItem castInternal(@NonNull IAnyAtomicItem item) { 105 IDecimalItem retval; 106 if (item instanceof INumericItem) { 107 if (item instanceof IDecimalItem) { 108 retval = (IDecimalItem) item; 109 } else { 110 // must be an integer type 111 retval = newItem(((IIntegerItem) item).asDecimal()); 112 } 113 } else if (item instanceof IBooleanItem) { 114 boolean value = ((IBooleanItem) item).toBoolean(); 115 retval = newItem(value ? DECIMAL_BOOLEAN_TRUE : DECIMAL_BOOLEAN_FALSE); 116 } else { 117 retval = super.castInternal(item); 118 } 119 return retval; 120 } 121}