com.cloudera.nav.sdk.client.writer.serde.MClassSerializer.java Source code

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Here is the source code for com.cloudera.nav.sdk.client.writer.serde.MClassSerializer.java

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/*
 * Copyright (c) 2015 Cloudera, Inc.
 *
 * 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 com.cloudera.nav.sdk.client.writer.serde;

import com.cloudera.nav.sdk.client.writer.registry.MClassRegistry;
import com.cloudera.nav.sdk.client.writer.registry.MPropertyEntry;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.ser.std.StdSerializer;

import java.io.IOException;

/**
 * JSON serializer for MClass objects, which writes out an object
 * containing the MProperty entries as key-value pairs
 */
public class MClassSerializer<T> extends StdSerializer<T> {

    protected final MClassRegistry registry;

    public MClassSerializer(Class<T> aClass, MClassRegistry registry) {
        super(aClass);
        this.registry = registry;
    }

    @Override
    public void serialize(T t, JsonGenerator jg, SerializerProvider sp) throws IOException {
        jg.writeStartObject();
        writeProperties(t, jg);
        jg.writeEndObject();
    }

    protected void writeProperties(T t, JsonGenerator jg) throws IOException {
        for (MPropertyEntry p : registry.getProperties(t.getClass())) {
            jg.writeObjectField(p.getAttribute(), p.getValue(t));
        }
    }
}