[Feature][Auto Create Mysql table] MySQL automatically creates tables...

[Feature][Auto Create Mysql table] MySQL automatically creates tables consistent with the original tables (#1179)

* MySQL automatically creates tables consistent with the original tables

* Optimization type length judgment logic

* format code

* format code import

dlink-common/src/main/java/com/dlink/model/Column.java

@@ -46,6 +46,7 @@ public class Column implements Serializable {
     private ColumnType javaType;
     private String columnFamily;
     private Integer position;
+    private Integer length;
     private Integer precision;
     private Integer scale;
     private String characterSet;

dlink-metadata/dlink-metadata-mysql/src/main/java/com/dlink/metadata/driver/MySqlDriver.java

@@ -83,17 +83,15 @@ public class MySqlDriver extends AbstractJdbcDriver {
             Column column = table.getColumns().get(i);
             sb.append("  `")
                     .append(column.getName()).append("`  ")
-                .append(column.getType()).append("  ");
-            //todo tmp process for varchar
-            if (column.getType().equals("varchar")) {
-                sb.append("(255)");
-            }
-            if (column.getPrecision() > 0) {
-                sb.append("(").append(column.getPrecision());
-                if (column.getScale() > 0) {
-                    sb.append(",").append(column.getScale());
-                }
-                sb.append(")");
+                    .append(column.getType());
+            // 处理浮点类型
+            if (column.getPrecision() > 0 && column.getScale() > 0) {
+                sb.append("(")
+                        .append(column.getLength())
+                        .append(",").append(column.getScale())
+                        .append(")");
+            } else if (null != column.getLength()) { // 处理字符串类型和数值型
+                sb.append("(").append(column.getLength()).append(")");
             }
             if (Asserts.isNotNull(column.getCharacterSet())) {
                 sb.append(" CHARACTER SET ").append(column.getCharacterSet());

dlink-metadata/dlink-metadata-mysql/src/main/java/com/dlink/metadata/query/MySqlQuery.java

@@ -42,7 +42,7 @@ public class MySqlQuery extends AbstractDBQuery {
 
     @Override
     public String columnsSql(String schemaName, String tableName) {
-        return "select COLUMN_NAME,DATA_TYPE,COLUMN_COMMENT,COLUMN_KEY,EXTRA AS AUTO_INCREMENT"
+        return "select COLUMN_NAME,COLUMN_TYPE,COLUMN_COMMENT,COLUMN_KEY,EXTRA AS AUTO_INCREMENT"
                 + ",COLUMN_DEFAULT,IS_NULLABLE,NUMERIC_PRECISION,NUMERIC_SCALE,CHARACTER_SET_NAME"
                 + ",COLLATION_NAME,ORDINAL_POSITION from INFORMATION_SCHEMA.COLUMNS "
                 + "where TABLE_SCHEMA = '" + schemaName + "' and TABLE_NAME = '" + tableName + "' "
@@ -54,4 +54,8 @@ public class MySqlQuery extends AbstractDBQuery {
         return "Database";
     }
 
+    @Override
+    public String columnType() {
+        return "COLUMN_TYPE";
+    }
 }