88 lines
2.8 KiB
Java
88 lines
2.8 KiB
Java
/*
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* Copyright (C) 2020 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.gson.internal.sql;
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import java.sql.Timestamp;
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import java.util.Date;
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import com.google.gson.TypeAdapterFactory;
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import com.google.gson.internal.bind.DefaultDateTypeAdapter.DateType;
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/**
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* Encapsulates access to {@code java.sql} types, to allow Gson to
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* work without the {@code java.sql} module being present.
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* No {@link ClassNotFoundException}s will be thrown in case
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* the {@code java.sql} module is not present.
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*
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* <p>If {@link #SUPPORTS_SQL_TYPES} is {@code true}, all other
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* constants of this class will be non-{@code null}. However, if
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* it is {@code false} all other constants will be {@code null} and
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* there will be no support for {@code java.sql} types.
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*/
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public final class SqlTypesSupport {
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/**
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* {@code true} if {@code java.sql} types are supported,
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* {@code false} otherwise
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*/
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public static final boolean SUPPORTS_SQL_TYPES;
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public static final DateType<? extends Date> DATE_DATE_TYPE;
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public static final DateType<? extends Date> TIMESTAMP_DATE_TYPE;
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public static final TypeAdapterFactory DATE_FACTORY;
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public static final TypeAdapterFactory TIME_FACTORY;
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public static final TypeAdapterFactory TIMESTAMP_FACTORY;
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static {
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boolean sqlTypesSupport;
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try {
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Class.forName("java.sql.Date");
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sqlTypesSupport = true;
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} catch (ClassNotFoundException classNotFoundException) {
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sqlTypesSupport = false;
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}
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SUPPORTS_SQL_TYPES = sqlTypesSupport;
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if (SUPPORTS_SQL_TYPES) {
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DATE_DATE_TYPE = new DateType<java.sql.Date>(java.sql.Date.class) {
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@Override protected java.sql.Date deserialize(Date date) {
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return new java.sql.Date(date.getTime());
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}
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};
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TIMESTAMP_DATE_TYPE = new DateType<Timestamp>(Timestamp.class) {
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@Override protected Timestamp deserialize(Date date) {
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return new Timestamp(date.getTime());
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}
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};
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DATE_FACTORY = SqlDateTypeAdapter.FACTORY;
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TIME_FACTORY = SqlTimeTypeAdapter.FACTORY;
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TIMESTAMP_FACTORY = SqlTimestampTypeAdapter.FACTORY;
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} else {
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DATE_DATE_TYPE = null;
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TIMESTAMP_DATE_TYPE = null;
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DATE_FACTORY = null;
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TIME_FACTORY = null;
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TIMESTAMP_FACTORY = null;
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}
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}
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private SqlTypesSupport() {
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}
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}
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