Java tutorial
/* * JBoss, Home of Professional Open Source. * See the COPYRIGHT.txt file distributed with this work for information * regarding copyright ownership. Some portions may be licensed * to Red Hat, Inc. under one or more contributor license agreements. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301 USA. */ package org.komodo.rest.relational.json; import static org.komodo.rest.Messages.Error.UNEXPECTED_JSON_TOKEN; import java.io.IOException; import org.komodo.rest.Messages; import org.komodo.rest.relational.response.RestQueryColumn; import com.google.gson.TypeAdapter; import com.google.gson.stream.JsonReader; import com.google.gson.stream.JsonWriter; /** * A GSON serializer/deserializer for {@status RestQueryColumn}s. */ public class QueryColumnSerializer extends TypeAdapter<RestQueryColumn> { /** * {@inheritDoc} * * @see com.google.gson.TypeAdapter#read(com.google.gson.stream.JsonReader) */ @Override public RestQueryColumn read(final JsonReader in) throws IOException { final RestQueryColumn queryColumn = new RestQueryColumn(); in.beginObject(); while (in.hasNext()) { final String name = in.nextName(); switch (name) { case RestQueryColumn.NAME_LABEL: queryColumn.setName(in.nextString()); break; case RestQueryColumn.LABEL_LABEL: queryColumn.setLabel(in.nextString()); break; case RestQueryColumn.TYPE_LABEL: queryColumn.setType(in.nextString()); break; default: throw new IOException(Messages.getString(UNEXPECTED_JSON_TOKEN, name)); } } in.endObject(); return queryColumn; } /** * {@inheritDoc} * * @see com.google.gson.TypeAdapter#write(com.google.gson.stream.JsonWriter, java.lang.Object) */ @Override public void write(final JsonWriter out, final RestQueryColumn value) throws IOException { out.beginObject(); out.name(RestQueryColumn.NAME_LABEL); out.value(value.getName()); out.name(RestQueryColumn.LABEL_LABEL); out.value(value.getLabel()); out.name(RestQueryColumn.TYPE_LABEL); out.value(value.getType()); out.endObject(); } }