新增MarkDown切片

backend/app/engine/loaders/markDown.py

@@ -0,0 +1,64 @@
+from app.engine.loaders.projectJson import *
+
+class MarkDown:
+    def __init__(self,table:JsonTable,path:str) -> None:
+        self._table = table
+        self._path = path
+
+    def build(self):        
+        flds:Dict[str,Field] = self._table.fields()
+        records:List[Record] = self._table.records()
+        columns:list = []
+        colComments:list = []
+        ignores:List[str] = []
+        for name,fld in flds.items():
+            if name =='_id' or  name =='nodeType' or name =='relTbId':
+                ignores.append(name)
+                continue
+
+            columns.append(fld.value('name'))
+            colComments.append(fld.value('alias'))
+
+        rowdatas = []
+        for record in records:
+            datas = []
+            for col in columns:
+                if col in ignores:
+                    continue
+                txt:str = record.value(col)
+                datas.append(txt.replace('\n'," "))
+            rowdatas.append(datas)
+        
+        content = self.convert(self._table.name(),self._table.comment(),columns,colComments,rowdatas)
+        with open(self._path, 'w',encoding='utf-8') as file:
+            file.write(content)
+
+    def convert(self,tableName:str,tableComment:str,columns:list,colComments:list,rowdatas:list):
+        strTitle = "# " + tableName + '\n'
+        if tableName!='':
+            strTitle+= f"备注：{tableComment}" + '\n'
+
+        for i in range(len(columns)):
+            strTitle+= f"- 字段名称：{columns[i]}" + '\n'
+            comment = colComments[i]
+            if comment!='':
+                strTitle+= f"  - 备注：{comment}" + '\n'
+
+        markdown_table = "|"
+        # 添加列标题
+        markdown_table += "|".join(columns) + "|\n"
+        # 添加分隔行
+        markdown_table += "|" + "|".join(['---' for _ in columns]) + "|\n"
+        # 遍历每个数据行
+        for row in rowdatas:
+            # 添加数据行
+            markdown_table += "|" + "|".join(row) + "|\n"
+        return strTitle + "\n" + markdown_table
+    
+
+prjSon = ProjectJson('')
+prjSon.parse()
+tables = prjSon.tables()
+for name,table in tables.items():
+    mdObj = MarkDown(table,f'')
+    mdObj.build()

backend/app/engine/loaders/markdownReader.py

@@ -0,0 +1,59 @@
+from llama_index.readers.file.markdown import MarkdownReader
+from typing import Any, Dict, List, Optional, Tuple
+import re
+from llama_index.core.utils import get_tokenizer
+
+
+class ChunkMarkdownReader(MarkdownReader):
+    def __init__(
+        self,
+        *args: Any,
+        chunkSize:int = 2048,
+        **kwargs: Any,
+    ) -> None:
+        self._chunkSize = chunkSize
+        self._tokenizer = get_tokenizer()
+        super().__init__(*args,**kwargs)
+
+    def markdown_to_tups(self, markdown_text: str) -> List[Tuple[Optional[str], str]]:
+        markdown_tups: List[Tuple[Optional[str], str]] = []
+        lines = markdown_text.split("\n")
+
+        strTitle = ''
+        tokensNum:int = 0
+        current_lines = []
+        strheader:str = ''
+        headerSize:int = 0
+        for line in lines:  
+            tokensNum += self._token_size(line)
+            if tokensNum > self._chunkSize and len(current_lines) > 0:
+                markdown_tups.append((strTitle + strheader , "\n".join(current_lines)))
+                tokensNum =  headerSize
+                current_lines.clear()
+
+            current_lines.append(line)
+
+            if line == '\n' or line == '\r':
+                if tokensNum > self._chunkSize:
+                    raise ValueError('标题Token数大于chunkSize大小')
+                strTitle =  "\n".join(current_lines)
+                headerSize = headerSize + self._token_size(strTitle)  
+                current_lines.clear()
+                        
+            if line.startswith("|---"):
+                strheader = "\n".join(current_lines) 
+                headerSize= headerSize + self._token_size(strheader)  
+                current_lines.clear() 
+
+        if len(current_lines) > 0:
+            markdown_tups.append((strTitle + strheader , "\n".join(current_lines)))
+        return [
+            (
+                key if key is None else re.sub(r"#", "", key).strip(),
+                re.sub(r"<.*?>", "", value),
+            )
+            for key, value in markdown_tups
+        ]
+
+    def _token_size(self, text: str) -> int:
+        return len(self._tokenizer(text))

backend/app/engine/loaders/projectJson.py

@@ -24,13 +24,16 @@ class JsonTable:
         self._filePth = filePth
         self._fields:Dict[str,Field] = {}
         self._records:List[Record] = []
+        self._fileName = os.path.splitext(os.path.basename(filePth))[0]
         self._name = ''
+        self._comment = ''
 
     def parse(self):
         with open(self._filePth, 'r',encoding='utf-8') as file:
             jsObj = json.load(file)
             data:dict = jsObj.get('table')
             self._name = data.get('name')
+            self._comment = data.get('comment')
             Jsfields = data.get('fields')
             for jsfiled in Jsfields:
                 field = Field(jsfiled)
@@ -42,6 +45,16 @@ class JsonTable:
 
     def records(self):
         return self._records
+    
+    def fields(self):
+        return self._fields
+    
+    def name(self):
+        return self._fileName
+    
+    def comment(self):
+        return self._comment
+
 
 class ProjectJson:
     def __init__(self,dir:str) -> None:
@@ -59,6 +72,9 @@ class ProjectJson:
 
     def table(self,tableName:str):
         return self._tables[tableName]
+    
+    def tables(self):
+        return self._tables
 
 def getProjectName(dir:str):
     prjJson = ProjectJson(dir)