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Jackson Dataformat for Velocypack
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/*
 * DISCLAIMER
 *
 * Copyright 2017 ArangoDB GmbH, Cologne, Germany
 *
 * 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.
 *
 * Copyright holder is ArangoDB GmbH, Cologne, Germany
 */

package com.arangodb.jackson.dataformat.velocypack.internal;

import java.io.IOException;
import java.sql.Date;
import java.sql.Timestamp;
import java.util.HashMap;
import java.util.Map;

import com.arangodb.entity.BaseDocument;
import com.arangodb.entity.BaseEdgeDocument;
import com.arangodb.entity.DocumentField;
import com.arangodb.velocypack.VPackSlice;
import com.arangodb.velocypack.internal.util.DateUtil;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;

/**
 * @author Mark Vollmary
 *
 */
public class VPackSerializers {

	public static final JsonSerializer VPACK = new JsonSerializer() {
		@Override
		public void serialize(final VPackSlice value, final JsonGenerator gen, final SerializerProvider serializers)
				throws IOException {
			if (gen instanceof VPackGenerator) {
				((VPackGenerator) gen).writeVPack(value);
			} else {
				gen.writeBinary(value.getBuffer());
			}
		}
	};

	public static final JsonSerializer UTIL_DATE = new JsonSerializer() {
		@Override
		public void serialize(final java.util.Date value, final JsonGenerator gen, final SerializerProvider serializers)
				throws IOException, JsonProcessingException {
			gen.writeString(DateUtil.format(value));
		}
	};

	public static final JsonSerializer SQL_DATE = new JsonSerializer() {
		@Override
		public void serialize(final Date value, final JsonGenerator gen, final SerializerProvider serializers)
				throws IOException, JsonProcessingException {
			gen.writeString(DateUtil.format(value));
		}
	};

	public static final JsonSerializer SQL_TIMESTAMP = new JsonSerializer() {
		@Override
		public void serialize(final Timestamp value, final JsonGenerator gen, final SerializerProvider serializers)
				throws IOException, JsonProcessingException {
			gen.writeString(DateUtil.format(value));
		}
	};

	public static final JsonSerializer BASE_DOCUMENT = new JsonSerializer() {
		@Override
		public void serialize(final BaseDocument value, final JsonGenerator gen, final SerializerProvider serializers)
				throws IOException {
			final Map doc = new HashMap<>();
			doc.putAll(value.getProperties());
			doc.put(DocumentField.Type.ID.getSerializeName(), value.getId());
			doc.put(DocumentField.Type.KEY.getSerializeName(), value.getKey());
			doc.put(DocumentField.Type.REV.getSerializeName(), value.getRevision());
			gen.writeObject(doc);
		}
	};

	public static final JsonSerializer BASE_EDGE_DOCUMENT = new JsonSerializer() {
		@Override
		public void serialize(
			final BaseEdgeDocument value,
			final JsonGenerator gen,
			final SerializerProvider serializers) throws IOException {
			final Map doc = new HashMap<>();
			doc.putAll(value.getProperties());
			doc.put(DocumentField.Type.ID.getSerializeName(), value.getId());
			doc.put(DocumentField.Type.KEY.getSerializeName(), value.getKey());
			doc.put(DocumentField.Type.REV.getSerializeName(), value.getRevision());
			doc.put(DocumentField.Type.FROM.getSerializeName(), value.getFrom());
			doc.put(DocumentField.Type.TO.getSerializeName(), value.getTo());
			gen.writeObject(doc);
		}
	};

}