DecimalAdapter.java
/*
* Portions of this software was developed by employees of the National Institute
* of Standards and Technology (NIST), an agency of the Federal Government and is
* being made available as a public service. Pursuant to title 17 United States
* Code Section 105, works of NIST employees are not subject to copyright
* protection in the United States. This software may be subject to foreign
* copyright. Permission in the United States and in foreign countries, to the
* extent that NIST may hold copyright, to use, copy, modify, create derivative
* works, and distribute this software and its documentation without fee is hereby
* granted on a non-exclusive basis, provided that this notice and disclaimer
* of warranty appears in all copies.
*
* THE SOFTWARE IS PROVIDED 'AS IS' WITHOUT ANY WARRANTY OF ANY KIND, EITHER
* EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY
* THAT THE SOFTWARE WILL CONFORM TO SPECIFICATIONS, ANY IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND FREEDOM FROM
* INFRINGEMENT, AND ANY WARRANTY THAT THE DOCUMENTATION WILL CONFORM TO THE
* SOFTWARE, OR ANY WARRANTY THAT THE SOFTWARE WILL BE ERROR FREE. IN NO EVENT
* SHALL NIST BE LIABLE FOR ANY DAMAGES, INCLUDING, BUT NOT LIMITED TO, DIRECT,
* INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF, RESULTING FROM,
* OR IN ANY WAY CONNECTED WITH THIS SOFTWARE, WHETHER OR NOT BASED UPON WARRANTY,
* CONTRACT, TORT, OR OTHERWISE, WHETHER OR NOT INJURY WAS SUSTAINED BY PERSONS OR
* PROPERTY OR OTHERWISE, AND WHETHER OR NOT LOSS WAS SUSTAINED FROM, OR AROSE OUT
* OF THE RESULTS OF, OR USE OF, THE SOFTWARE OR SERVICES PROVIDED HEREUNDER.
*/
package gov.nist.secauto.metaschema.core.datatype.adapter;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatTypes;
import gov.nist.secauto.metaschema.core.datatype.AbstractDataTypeAdapter;
import gov.nist.secauto.metaschema.core.metapath.item.atomic.IAnyAtomicItem;
import gov.nist.secauto.metaschema.core.metapath.item.atomic.IBooleanItem;
import gov.nist.secauto.metaschema.core.metapath.item.atomic.IDecimalItem;
import gov.nist.secauto.metaschema.core.metapath.item.atomic.IIntegerItem;
import gov.nist.secauto.metaschema.core.metapath.item.atomic.INumericItem;
import gov.nist.secauto.metaschema.core.util.ObjectUtils;
import java.io.IOException;
import java.math.BigDecimal;
import java.math.MathContext;
import java.util.List;
import edu.umd.cs.findbugs.annotations.NonNull;
public class DecimalAdapter
extends AbstractDataTypeAdapter<BigDecimal, IDecimalItem> {
public static final MathContext MATH_CONTEXT = MathContext.DECIMAL64;
@NonNull
private static final BigDecimal DECIMAL_BOOLEAN_TRUE = new BigDecimal("1.0");
@NonNull
private static final BigDecimal DECIMAL_BOOLEAN_FALSE = new BigDecimal("0.0");
@NonNull
private static final List<String> NAMES = ObjectUtils.notNull(
List.of("decimal"));
DecimalAdapter() {
super(BigDecimal.class);
}
@Override
public List<String> getNames() {
return NAMES;
}
@Override
public JsonFormatTypes getJsonRawType() {
return JsonFormatTypes.NUMBER;
}
@Override
public BigDecimal parse(String value) {
return new BigDecimal(value, MATH_CONTEXT);
}
@Override
public void writeJsonValue(Object value, JsonGenerator generator) throws IOException {
try {
generator.writeNumber((BigDecimal) value);
} catch (ClassCastException ex) {
throw new IOException(ex);
}
}
@Override
public BigDecimal copy(Object obj) {
// a BigDecimal is immutable
return (BigDecimal) obj;
}
@Override
public Class<IDecimalItem> getItemClass() {
return IDecimalItem.class;
}
@Override
public IDecimalItem newItem(Object value) {
BigDecimal item = toValue(value);
return IDecimalItem.valueOf(item);
}
@Override
protected IDecimalItem castInternal(@NonNull IAnyAtomicItem item) {
IDecimalItem retval;
if (item instanceof INumericItem) {
if (item instanceof IDecimalItem) {
retval = (IDecimalItem) item;
} else {
// must be an integer type
retval = newItem(((IIntegerItem) item).asDecimal());
}
} else if (item instanceof IBooleanItem) {
boolean value = ((IBooleanItem) item).toBoolean();
retval = newItem(value ? DECIMAL_BOOLEAN_TRUE : DECIMAL_BOOLEAN_FALSE);
} else {
retval = super.castInternal(item);
}
return retval;
}
}