Confluence Loader: Fix CQL loading (#27620)

fix #12082

<!---
If no one reviews your PR within a few days, please @-mention one of
baskaryan, efriis, eyurtsev, ccurme, vbarda, hwchase17.
-->

libs/community/langchain_community/document_loaders/confluence.py

@@ -442,17 +442,25 @@ def lazy_load(self) -> Iterator[Document]:
         yield from self._lazy_load()
 
     def _search_content_by_cql(
-        self, cql: str, include_archived_spaces: Optional[bool] = None, **kwargs: Any
-    ) -> List[dict]:
-        url = "rest/api/content/search"
+        self,
+        cql: str,
+        include_archived_spaces: Optional[bool] = None,
+        next_url: str = "",
+        **kwargs: Any,
+    ) -> tuple[List[dict], str]:
+        if next_url:
+            response = self.confluence.get(next_url)
+        else:
+            url = "rest/api/content/search"
+
+            params: Dict[str, Any] = {"cql": cql}
+            params.update(kwargs)
+            if include_archived_spaces is not None:
+                params["includeArchivedSpaces"] = include_archived_spaces
 
-        params: Dict[str, Any] = {"cql": cql}
-        params.update(kwargs)
-        if include_archived_spaces is not None:
-            params["includeArchivedSpaces"] = include_archived_spaces
+            response = self.confluence.get(url, params=params)
 
-        response = self.confluence.get(url, params=params)
-        return response.get("results", [])
+        return response.get("results", []), response.get("_links", {}).get("next", "")
 
     def paginate_request(self, retrieval_method: Callable, **kwargs: Any) -> List:
         """Paginate the various methods to retrieve groups of pages.
@@ -477,6 +485,7 @@ def paginate_request(self, retrieval_method: Callable, **kwargs: Any) -> List:
 
         max_pages = kwargs.pop("max_pages")
         docs: List[dict] = []
+        next_url: str = ""
         while len(docs) < max_pages:
             get_pages = retry(
                 reraise=True,
@@ -490,9 +499,15 @@ def paginate_request(self, retrieval_method: Callable, **kwargs: Any) -> List:
                 ),
                 before_sleep=before_sleep_log(logger, logging.WARNING),
             )(retrieval_method)
-            batch = get_pages(**kwargs, start=len(docs))
-            if not batch:
-                break
+            if self.cql:  # cursor pagination for CQL
+                batch, next_url = get_pages(**kwargs, next_url=next_url)
+                if not next_url:
+                    docs.extend(batch)
+                    break
+            else:
+                batch = get_pages(**kwargs, start=len(docs))
+                if not batch:
+                    break
             docs.extend(batch)
         return docs[:max_pages]
 
@@ -694,8 +709,11 @@ def process_pdf(
             return text
 
         for i, image in enumerate(images):
-            image_text = pytesseract.image_to_string(image, lang=ocr_languages)
-            text += f"Page {i + 1}:\n{image_text}\n\n"
+            try:
+                image_text = pytesseract.image_to_string(image, lang=ocr_languages)
+                text += f"Page {i + 1}:\n{image_text}\n\n"
+            except pytesseract.TesseractError as ex:
+                logger.warning(f"TesseractError: {ex}")
 
         return text