Mercurial > hg > release > thermostat-0.13
view web/common/src/main/java/com/redhat/thermostat/web/common/WebPreparedStatementSerializer.java @ 1179:03ed49a50413
Implement PreparedStatement in WebStorage (Part 1).
Reviewed-by: ebaron
Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2013-July/007565.html
author | Severin Gehwolf <sgehwolf@redhat.com> |
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date | Thu, 18 Jul 2013 16:52:29 +0200 |
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/* * Copyright 2012, 2013 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.web.common; import java.lang.reflect.Type; import com.google.gson.JsonDeserializationContext; import com.google.gson.JsonDeserializer; import com.google.gson.JsonElement; import com.google.gson.JsonObject; import com.google.gson.JsonParseException; import com.google.gson.JsonPrimitive; import com.google.gson.JsonSerializationContext; import com.google.gson.JsonSerializer; import com.redhat.thermostat.storage.core.PreparedParameters; /** * GSON type adapter for {@link WebPreparedStatement}. * Depends on {@link PreparedParameterSerializer} being registered as * type adapter as well. * */ public class WebPreparedStatementSerializer implements JsonDeserializer<WebPreparedStatement<?>>, JsonSerializer<WebPreparedStatement<?>> { private static final String PROP_PARAMS = "p"; private static final String PROP_STMT_ID = "sid"; @Override public JsonElement serialize(WebPreparedStatement<?> stmt, Type type, JsonSerializationContext ctxt) { JsonObject result = new JsonObject(); JsonElement parameters = ctxt.serialize(stmt.getParams(), PreparedParameters.class); result.add(PROP_PARAMS, parameters); JsonPrimitive stmtIdElem = new JsonPrimitive(stmt.getStatementId()); result.add(PROP_STMT_ID, stmtIdElem); return result; } @Override public WebPreparedStatement<?> deserialize(JsonElement jsonElem, Type type, JsonDeserializationContext ctxt) throws JsonParseException { JsonElement paramsElem = jsonElem.getAsJsonObject().get(PROP_PARAMS); JsonElement stmtIdElem = jsonElem.getAsJsonObject().get(PROP_STMT_ID); PreparedParameters params = ctxt.deserialize(paramsElem, PreparedParameters.class); int stmtId = ctxt.deserialize(stmtIdElem, int.class); WebPreparedStatement<?> stmt = new WebPreparedStatement<>(); stmt.setStatementId(stmtId); stmt.setParams(params); return stmt; } }