完善静态变量赋值

pagehelper · Oct 7, 2021 · 1e9e512 · 1e9e512
1 parent 8b1d0fc
commit 1e9e512
Showing 1 changed file with 10 additions and 20 deletions.
diff --git a/src/main/java/com/github/pagehelper/dialect/auto/DataSourceNegotiationAutoDialect.java b/src/main/java/com/github/pagehelper/dialect/auto/DataSourceNegotiationAutoDialect.java
@@ -2,8 +2,6 @@
 
 import com.github.pagehelper.AutoDialect;
 import com.github.pagehelper.dialect.AbstractHelperDialect;
-import org.apache.ibatis.logging.Log;
-import org.apache.ibatis.logging.LogFactory;
 import org.apache.ibatis.mapping.MappedStatement;
 
 import javax.sql.DataSource;
@@ -19,37 +17,29 @@
  * @author liuzh
  */
 public class DataSourceNegotiationAutoDialect implements AutoDialect<String> {
- public static final Log log = LogFactory.getLog(DataSourceNegotiationAutoDialect.class);
- private static final List<DataSourceAutoDialect> autoDialects = new ArrayList<DataSourceAutoDialect>();
+ private static final List<DataSourceAutoDialect> AUTO_DIALECTS = new ArrayList<DataSourceAutoDialect>();
  private Map<String, DataSourceAutoDialect> urlMap = new ConcurrentHashMap<String, DataSourceAutoDialect>();
 
- /**
- * 创建时，初始化所有实现，当依赖的连接池不存在时，这里不会添加成功，所以理论上这里包含的内容不会多，执行时不会迭代多次
- */
- public DataSourceNegotiationAutoDialect() {
+ static {
+ //创建时，初始化所有实现，当依赖的连接池不存在时，这里不会添加成功，所以理论上这里包含的内容不会多，执行时不会迭代多次
  try {
- autoDialects.add(new HikariAutoDialect());
- log.debug("HikariAutoDialect 初始化成功");
+ AUTO_DIALECTS.add(new HikariAutoDialect());
  } catch (Exception ignore) {
  }
  try {
- autoDialects.add(new DruidAutoDialect());
- log.debug("DruidAutoDialect 初始化成功");
+ AUTO_DIALECTS.add(new DruidAutoDialect());
  } catch (Exception ignore) {
  }
  try {
- autoDialects.add(new TomcatAutoDialect());
- log.debug("TomcatAutoDialect 初始化成功");
+ AUTO_DIALECTS.add(new TomcatAutoDialect());
  } catch (Exception ignore) {
  }
  try {
- autoDialects.add(new C3P0AutoDialect());
- log.debug("C3P0AutoDialect 初始化成功");
+ AUTO_DIALECTS.add(new C3P0AutoDialect());
  } catch (Exception ignore) {
  }
  try {
- autoDialects.add(new DbcpAutoDialect());
- log.debug("DbcpAutoDialect 初始化成功");
+ AUTO_DIALECTS.add(new DbcpAutoDialect());
  } catch (Exception ignore) {
  }
  }
@@ -60,12 +50,12 @@ public DataSourceNegotiationAutoDialect() {
  * @param autoDialect
  */
  public static void registerAutoDialect(DataSourceAutoDialect autoDialect) {
- autoDialects.add(autoDialect);
+ AUTO_DIALECTS.add(autoDialect);
  }
 
  @Override
  public String extractDialectKey(MappedStatement ms, DataSource dataSource, Properties properties) {
- for (DataSourceAutoDialect autoDialect : autoDialects) {
+ for (DataSourceAutoDialect autoDialect : AUTO_DIALECTS) {
  String dialectKey = autoDialect.extractDialectKey(ms, dataSource, properties);
  if (dialectKey != null) {
  if (!urlMap.containsKey(dialectKey)) {