Java tutorial
/* * Copyright 2016 Rahel Lthy * * 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 ch.netzwerg.paleo.schema; import ch.netzwerg.paleo.ColumnIds; import ch.netzwerg.paleo.ColumnType; import com.fasterxml.jackson.core.JsonParser; import com.fasterxml.jackson.databind.DeserializationContext; import com.fasterxml.jackson.databind.JsonDeserializer; import java.io.IOException; public final class ColumnTypeDeserializer extends JsonDeserializer<ColumnType<?>> { public static final ColumnType<ColumnIds.StringColumnId> DEFAULT_TYPE = ColumnType.STRING; @Override public ColumnType<?> deserialize(JsonParser parser, DeserializationContext context) throws IOException { String typeValue = parser.getCodec().readValue(parser, String.class); return ColumnType.getByDescriptionOrDefault(typeValue, DEFAULT_TYPE); } }