Java tutorial
/* * Copyright 2014-2019 the original author or authors. * * 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 * * 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. */ package org.springframework.data.geo; import java.util.List; import com.fasterxml.jackson.annotation.JsonIgnore; import com.fasterxml.jackson.annotation.JsonIgnoreProperties; import com.fasterxml.jackson.annotation.JsonProperty; import com.fasterxml.jackson.core.Version; import com.fasterxml.jackson.databind.annotation.JsonDeserialize; import com.fasterxml.jackson.databind.module.SimpleModule; /** * Custom module to deserialize the geo-spatial value objects using Jackson 2. * * @author Oliver Gierke * @since 1.8 */ public class GeoModule extends SimpleModule { private static final long serialVersionUID = 1L; /** * Creates a new {@link GeoModule} registering mixins for common geo-spatial types. */ public GeoModule() { super("Spring Data Geo Mixins", new Version(1, 0, 0, null, "org.springframework.data", "spring-data-commons-geo")); setMixInAnnotation(Distance.class, DistanceMixin.class); setMixInAnnotation(Point.class, PointMixin.class); setMixInAnnotation(Box.class, BoxMixin.class); setMixInAnnotation(Circle.class, CircleMixin.class); setMixInAnnotation(Polygon.class, PolygonMixin.class); } @JsonIgnoreProperties("unit") static abstract class DistanceMixin { DistanceMixin(@JsonProperty("value") double value, @JsonProperty("metric") @JsonDeserialize(as = Metrics.class) Metric metic) { } @JsonIgnore abstract double getNormalizedValue(); } static abstract class PointMixin { PointMixin(@JsonProperty("x") double x, @JsonProperty("y") double y) { } } static abstract class CircleMixin { CircleMixin(@JsonProperty("center") Point center, @JsonProperty("radius") Distance radius) { } } static abstract class BoxMixin { BoxMixin(@JsonProperty("first") Point first, @JsonProperty("second") Point point) { } } static abstract class PolygonMixin { PolygonMixin(@JsonProperty("points") List<Point> points) { } } }