Mercurial > hg > thermostat-ng
view common/type-system/src/main/java/com/redhat/thermostat/lang/schema/internal/JSONServiceImpl.java @ 18:5100a9b678f4
Initial Schema related services
This patch adds initial support for schema validation and exposition services.
I am down as a reviewer since the initial code is from neugens, modified by me before this first commit.
Reviewed-by: neugens, stooke
Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2017-August/024759.html
Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2017-September/024823.html
Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2017-September/024918.html
author | Simon Tooke <stooke@redhat.com> |
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date | Fri, 08 Sep 2017 13:24:37 -0400 |
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/* * Copyright 2012-2017 Red Hat, Inc. * * This file is part of Thermostat. * * Thermostat is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published * by the Free Software Foundation; either version 2, or (at your * option) any later version. * * Thermostat is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Thermostat; see the file COPYING. If not see * <http://www.gnu.org/licenses/>. * * Linking this code with other modules is making a combined work * based on this code. Thus, the terms and conditions of the GNU * General Public License cover the whole combination. * * As a special exception, the copyright holders of this code give * you permission to link this code with independent modules to * produce an executable, regardless of the license terms of these * independent modules, and to copy and distribute the resulting * executable under terms of your choice, provided that you also * meet, for each linked independent module, the terms and conditions * of the license of that module. An independent module is a module * which is not derived from or based on this code. If you modify * this code, you may extend this exception to your version of the * library, but you are not obligated to do so. If you do not wish * to do so, delete this exception statement from your version. */ package com.redhat.thermostat.lang.schema.internal; import com.google.gson.ExclusionStrategy; import com.google.gson.FieldAttributes; import com.google.gson.GsonBuilder; import com.google.gson.TypeAdapter; import com.google.gson.stream.JsonReader; import com.google.gson.stream.JsonWriter; import com.redhat.thermostat.lang.schema.*; import com.redhat.thermostat.lang.schema.annotations.Schema; import org.apache.felix.scr.annotations.Component; import org.apache.felix.scr.annotations.Service; import java.io.IOException; @Component @Service(JSONService.class) public class JSONServiceImpl implements JSONService { private GsonBuilder builder; public JSONServiceImpl() { this(false); } public JSONServiceImpl(boolean prettyPrinting) { builder = new GsonBuilder(); if (prettyPrinting) { builder.setPrettyPrinting(); } AutoAdapter autoAdapter = new AutoAdapter(); builder.registerTypeAdapter(boolean.class, autoAdapter); builder.registerTypeAdapter(byte.class, autoAdapter); builder.registerTypeAdapter(short.class, autoAdapter); builder.registerTypeAdapter(int.class, autoAdapter); builder.registerTypeAdapter(long.class, autoAdapter); builder.registerTypeAdapter(double.class, autoAdapter); builder.registerTypeAdapter(float.class, autoAdapter); builder.registerTypeAdapter(Boolean.class, autoAdapter); builder.registerTypeAdapter(Byte.class, autoAdapter); builder.registerTypeAdapter(Short.class, autoAdapter); builder.registerTypeAdapter(Integer.class, autoAdapter); builder.registerTypeAdapter(Long.class, autoAdapter); builder.registerTypeAdapter(Double.class, autoAdapter); builder.registerTypeAdapter(Float.class, autoAdapter); builder.addSerializationExclusionStrategy(new AutoExclusionStategy()); } @Override public String serialiase(Object target) { // TODO - consider registering this class with the schema registry return builder.create().toJson(target); } private class AutoAdapter extends TypeAdapter<Object> { @Override public void write(JsonWriter out, Object value) throws IOException { out.value("" + value); } @Override public Object read(JsonReader in) throws IOException { throw new UnsupportedOperationException("read() not yet implemented"); } } public class AutoExclusionStategy implements ExclusionStrategy { public boolean shouldSkipClass(Class<?> arg0) { return false; } public boolean shouldSkipField(FieldAttributes field) { return (field.getAnnotation(Schema.class) == null); } } }