org.nd4j.common.holder.ObjectMapperHolder Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2015-2019 Skymind, Inc.
*
* This program and the accompanying materials are made available under the
* terms of the Apache License, Version 2.0 which is available at
* https://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.
*
* SPDX-License-Identifier: Apache-2.0
******************************************************************************/
package org.nd4j.common.holder;
import org.nd4j.shade.jackson.annotation.JsonAutoDetect;
import org.nd4j.shade.jackson.annotation.JsonInclude;
import org.nd4j.shade.jackson.databind.ObjectMapper;
/**
* A simple object mapper holder for
* using one single {@link ObjectMapper}
* across the whole project.
*
*/
public class ObjectMapperHolder {
private static ObjectMapper objectMapper = getMapper();
private ObjectMapperHolder() {}
/**
* Get a single object mapper for use
* with reading and writing json
* @return
*/
public static ObjectMapper getJsonMapper() {
return objectMapper;
}
private static ObjectMapper getMapper() {
ObjectMapper om = new ObjectMapper();
//Serialize fields only, not using getters
//Not all getters are supported - for example, UserEntity
om.setVisibilityChecker(om.getSerializationConfig()
.getDefaultVisibilityChecker()
.withFieldVisibility(JsonAutoDetect.Visibility.ANY)
.withGetterVisibility(JsonAutoDetect.Visibility.NONE)
.withSetterVisibility(JsonAutoDetect.Visibility.NONE)
.withCreatorVisibility(JsonAutoDetect.Visibility.NONE));
om.setSerializationInclusion(JsonInclude.Include.NON_NULL);
return om;
}
}