DefaultJsonSerializer.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.databind.io.json;
import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.util.DefaultPrettyPrinter;
import gov.nist.secauto.metaschema.core.configuration.IMutableConfiguration;
import gov.nist.secauto.metaschema.core.util.ObjectUtils;
import gov.nist.secauto.metaschema.databind.io.AbstractSerializer;
import gov.nist.secauto.metaschema.databind.io.SerializationFeature;
import gov.nist.secauto.metaschema.databind.model.IAssemblyClassBinding;
import java.io.IOException;
import java.io.Writer;
import edu.umd.cs.findbugs.annotations.NonNull;
public class DefaultJsonSerializer<CLASS>
extends AbstractSerializer<CLASS> {
private JsonFactory jsonFactory;
/**
* Construct a new Module binding-based deserializer that reads JSON-based
* Module content.
*
* @param classBinding
* the assembly class binding describing the Java objects this
* deserializer parses data into
*/
public DefaultJsonSerializer(@NonNull IAssemblyClassBinding classBinding) {
super(classBinding);
}
/**
* Constructs a new JSON factory.
* <p>
* Subclasses can override this method to create a JSON factory with a specific
* configuration.
*
* @return the factory
*/
@NonNull
protected JsonFactory getJsonFactoryInstance() {
return JsonFactoryFactory.instance();
}
@SuppressWarnings("PMD.NullAssignment")
@Override
protected void configurationChanged(IMutableConfiguration<SerializationFeature<?>> config) {
synchronized (this) {
jsonFactory = null;
}
}
@NonNull
private JsonFactory getJsonFactory() {
synchronized (this) {
if (jsonFactory == null) {
jsonFactory = getJsonFactoryInstance();
}
assert jsonFactory != null;
return jsonFactory;
}
}
@SuppressWarnings("resource")
@NonNull
private JsonGenerator newJsonGenerator(@NonNull Writer writer) throws IOException {
JsonFactory factory = getJsonFactory();
return ObjectUtils.notNull(factory.createGenerator(writer)
.setPrettyPrinter(new DefaultPrettyPrinter()));
}
@Override
public void serialize(CLASS data, Writer writer) throws IOException {
try (JsonGenerator generator = newJsonGenerator(writer)) {
IAssemblyClassBinding classBinding = getClassBinding();
MetaschemaJsonWriter jsonWriter = new MetaschemaJsonWriter(generator);
jsonWriter.write(classBinding, data);
}
}
}