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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.text.ParseException;
import java.util.Map;

import com.arangodb.entity.BaseDocument;
import com.arangodb.entity.BaseEdgeDocument;
import com.arangodb.velocypack.VPackSlice;
import com.arangodb.velocypack.internal.util.DateUtil;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;

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

	public static final JsonDeserializer VPACK = new JsonDeserializer() {
		@Override
		public VPackSlice deserialize(final JsonParser p, final DeserializationContext ctxt)
				throws IOException, JsonProcessingException {
			if (p instanceof VPackParser) {
				return ((VPackParser) p).getVPack();
			}
			return new VPackSlice(p.getBinaryValue());
		}
	};

	public static final JsonDeserializer UTIL_DATE = new JsonDeserializer() {
		@Override
		public java.util.Date deserialize(final JsonParser p, final DeserializationContext ctxt)
				throws IOException, JsonProcessingException {
			try {
				return DateUtil.parse(p.getValueAsString());
			} catch (final ParseException e) {
				throw new IOException(e);
			}
		}
	};

	public static final JsonDeserializer SQL_DATE = new JsonDeserializer() {
		@Override
		public java.sql.Date deserialize(final JsonParser p, final DeserializationContext ctxt)
				throws IOException, JsonProcessingException {
			try {
				return new java.sql.Date(DateUtil.parse(p.getValueAsString()).getTime());
			} catch (final ParseException e) {
				throw new IOException(e);
			}
		}
	};

	public static final JsonDeserializer SQL_TIMESTAMP = new JsonDeserializer() {
		@Override
		public java.sql.Timestamp deserialize(final JsonParser p, final DeserializationContext ctxt)
				throws IOException, JsonProcessingException {
			try {
				return new java.sql.Timestamp(DateUtil.parse(p.getValueAsString()).getTime());
			} catch (final ParseException e) {
				throw new IOException(e);
			}
		}
	};

	public static final JsonDeserializer BASE_DOCUMENT = new JsonDeserializer() {
		@SuppressWarnings("unchecked")
		@Override
		public BaseDocument deserialize(final JsonParser p, final DeserializationContext ctxt)
				throws IOException, JsonProcessingException {
			return new BaseDocument(p.readValueAs(Map.class));
		}
	};

	public static final JsonDeserializer BASE_EDGE_DOCUMENT = new JsonDeserializer() {
		@SuppressWarnings("unchecked")
		@Override
		public BaseEdgeDocument deserialize(final JsonParser p, final DeserializationContext ctxt)
				throws IOException, JsonProcessingException {
			return new BaseEdgeDocument(p.readValueAs(Map.class));
		}
	};

}