feat(PostgreSQL): Get the PostgreSQL sequences

chat2db-server/chat2db-spi/src/main/java/ai/chat2db/spi/MetaData.java

@@ -271,4 +271,13 @@ public interface MetaData {
      */
     String sequenceDDL(Connection connection, @NotEmpty String databaseName, String schemaName,
                        @NotEmpty String tableName);
+
+    /**
+     * Querying sequences simple information
+     *
+     * @param connection
+     * @param databaseName
+     * @return
+     */
+    List<SimpleSequence> sequences(Connection connection, String databaseName, String schemaName);
 }

chat2db-server/chat2db-spi/src/main/java/ai/chat2db/spi/jdbc/DefaultMetaService.java

@@ -193,4 +193,9 @@ public class DefaultMetaService implements MetaData {
                               @NotEmpty String tableName){
         return null;
     }
+
+    @Override
+    public List<SimpleSequence> sequences(Connection connection, String databaseName, String schemaName){
+        return null;
+    }
 }

chat2db-server/chat2db-spi/src/main/java/ai/chat2db/spi/model/Sequence.java

@@ -5,6 +5,8 @@ import lombok.Data;
 import lombok.NoArgsConstructor;
 import lombok.experimental.SuperBuilder;
 
+import java.io.Serializable;
+
 /**
  * Sequence information
  *
@@ -14,7 +16,8 @@ import lombok.experimental.SuperBuilder;
 @SuperBuilder
 @NoArgsConstructor
 @AllArgsConstructor
-public class Sequence {
+public class Sequence implements Serializable {
+    private static final long serialVersionUID = 1L;
     private String nspname;
     private String relname;
     private String typname;

chat2db-server/chat2db-spi/src/main/java/ai/chat2db/spi/model/SimpleSequence.java

@@ -0,0 +1,30 @@
+package ai.chat2db.spi.model;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.experimental.SuperBuilder;
+
+import java.io.Serializable;
+
+/**
+ * Simple sequence information
+ *
+ * @author Sylphy
+ */
+@Data
+@SuperBuilder
+@NoArgsConstructor
+@AllArgsConstructor
+public class SimpleSequence implements Serializable {
+    private static final long serialVersionUID = 1L;
+    /**
+     * Sequence Name
+     */
+    private String name;
+
+    /**
+     * description
+     */
+    private String comment;
+}