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 static org.komodo.rest.relational.json.KomodoJsonMarshaller.BUILDER; import java.io.IOException; import java.lang.reflect.Type; import java.util.Map; import org.komodo.rest.Messages; import org.komodo.rest.relational.request.KomodoConnectionAttributes; import com.google.gson.TypeAdapter; import com.google.gson.reflect.TypeToken; import com.google.gson.stream.JsonReader; import com.google.gson.stream.JsonWriter; /** * A GSON serializer/deserializer for {@status KomodoConnectionObject}s. */ public final class ConnectionAttributesSerializer extends TypeAdapter<KomodoConnectionAttributes> { private static final Type OBJECT_MAP_TYPE = new TypeToken<Map<String, Object>>() { /* nothing to do */}.getType(); protected KomodoConnectionAttributes createEntity() { return new KomodoConnectionAttributes(); } /** * {@inheritDoc} * * @see com.google.gson.TypeAdapter#read(com.google.gson.stream.JsonReader) */ @Override public KomodoConnectionAttributes read(final JsonReader in) throws IOException { final KomodoConnectionAttributes ConnectionAttr = createEntity(); in.beginObject(); while (in.hasNext()) { final String name = in.nextName(); switch (name) { case KomodoConnectionAttributes.JNDI_LABEL: ConnectionAttr.setJndi(in.nextString()); break; case KomodoConnectionAttributes.JDBC_LABEL: ConnectionAttr.setJdbc(in.nextBoolean()); break; case KomodoConnectionAttributes.DRIVER_LABEL: ConnectionAttr.setDriver(in.nextString()); break; case KomodoConnectionAttributes.PARAMETERS_LABEL: Map<String, String> parameters = BUILDER.fromJson(in, Map.class); for (Map.Entry<String, String> parameter : parameters.entrySet()) { ConnectionAttr.setParameter(parameter.getKey(), parameter.getValue()); } break; default: throw new IOException(Messages.getString(UNEXPECTED_JSON_TOKEN, name)); } } in.endObject(); return ConnectionAttr; } /** * {@inheritDoc} * * @see com.google.gson.TypeAdapter#write(com.google.gson.stream.JsonWriter, java.lang.Object) */ @Override public void write(final JsonWriter out, final KomodoConnectionAttributes value) throws IOException { out.beginObject(); out.name(KomodoConnectionAttributes.JNDI_LABEL); out.value(value.getJndi()); out.name(KomodoConnectionAttributes.DRIVER_LABEL); out.value(value.getDriver()); out.name(KomodoConnectionAttributes.JDBC_LABEL); out.value(value.isJdbc()); if (!value.getParameters().isEmpty()) { out.name(KomodoConnectionAttributes.PARAMETERS_LABEL); BUILDER.toJson(value.getParameters(), OBJECT_MAP_TYPE, out); } out.endObject(); } }