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+/*
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+ * Copyright (c) 2011-2025, baomidou (jobob@qq.com).
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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.baomidou.mybatisplus.core.spi;
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+
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+import com.baomidou.mybatisplus.core.toolkit.Assert;
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+import org.apache.ibatis.logging.Log;
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+import org.apache.ibatis.logging.LogFactory;
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+
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+import java.util.ServiceLoader;
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+
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+/**
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+ * 兼容处理辅助类
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+ * <p>默认加载使用SPI实现,需要手动指定请使用{@link #setCompatibleSet(CompatibleSet)}</p>
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+ */
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+public class CompatibleHelper {
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+
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+ private static final Log LOG = LogFactory.getLog(CompatibleHelper.class);
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+
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+ private static CompatibleSet COMPATIBLE_SET = null;
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+
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+ static {
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+ ServiceLoader<CompatibleSet> loader = ServiceLoader.load(CompatibleSet.class, CompatibleSet.class.getClassLoader());
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+ int size = 0;
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+ for (CompatibleSet compatibleSet : loader) {
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+ size++;
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+ LOG.debug("Load compatibleSet: " + compatibleSet);
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+ COMPATIBLE_SET = compatibleSet;
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+ }
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+ if (size > 1) {
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+ LOG.warn("There are currently multiple implementations, and the last one is used " + COMPATIBLE_SET);
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+ }
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+ }
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+
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+ /**
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+ * 判断是否存在 {@link com.baomidou.mybatisplus.core.spi.CompatibleSet} 实例
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+ *
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+ * @return 是否存在 (存在返回true,为空返回false)
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+ * @since 3.5.12
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+ */
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+ public static boolean hasCompatibleSet() {
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+ return COMPATIBLE_SET != null;
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+ }
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+
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+ /**
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+ * 手动指定 {@link com.baomidou.mybatisplus.core.spi.CompatibleSet} 实例
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+ *
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+ * @param compatibleSet {@link com.baomidou.mybatisplus.core.spi.CompatibleSet} 实例
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+ * @since 3.5.12
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+ */
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+ public static void setCompatibleSet(CompatibleSet compatibleSet) {
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+ COMPATIBLE_SET = compatibleSet;
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+ }
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+
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+ /**
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+ * 获取{@link com.baomidou.mybatisplus.core.spi.CompatibleSet}实例
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+ * <p>当为空时会抛出异常,需要检查是否为空请使用{@link #hasCompatibleSet()}</p>
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+ *
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+ * @return {@link com.baomidou.mybatisplus.core.spi.CompatibleSet}
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+ * @see #setCompatibleSet(CompatibleSet)
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+ */
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+ public static CompatibleSet getCompatibleSet() {
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+ Assert.isTrue(hasCompatibleSet(), "Please add specific implementation dependencies or use the setCompatibleSet method to specify");
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+ return COMPATIBLE_SET;
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+ }
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+
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+}
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