From 36d2b46496ed5e5a21510cb2060f2453a97a1b4e Mon Sep 17 00:00:00 2001
From: Dmitrii Barnukov <29237913+Nexus6v2@users.noreply.github.com>
Date: Fri, 13 Mar 2026 12:46:43 +0100
Subject: [PATCH] dbeaver/pro#8331 added sql generation for large objects
 (#4208)

* dbeaver/pro#8331 added sql generation for large objects

* dbeaver/pro#8331 check only relevant columns

---------

Co-authored-by: Ainur <59531286+yagudin10@users.noreply.github.com>
---
 .../service/sql/impl/WebServiceSQL.java       | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/server/bundles/io.cloudbeaver.server/src/io/cloudbeaver/service/sql/impl/WebServiceSQL.java b/server/bundles/io.cloudbeaver.server/src/io/cloudbeaver/service/sql/impl/WebServiceSQL.java
index c9b9a94556..5870be0fec 100644
--- a/server/bundles/io.cloudbeaver.server/src/io/cloudbeaver/service/sql/impl/WebServiceSQL.java
+++ b/server/bundles/io.cloudbeaver.server/src/io/cloudbeaver/service/sql/impl/WebServiceSQL.java
@@ -31,6 +31,7 @@ import org.jkiss.code.NotNull;
 import org.jkiss.code.Nullable;
 import org.jkiss.dbeaver.DBException;
 import org.jkiss.dbeaver.Log;
+import org.jkiss.dbeaver.model.DBPDataKind;
 import org.jkiss.dbeaver.model.DBPDataSource;
 import org.jkiss.dbeaver.model.DBPDataSourceContainer;
 import org.jkiss.dbeaver.model.DBUtils;
@@ -256,10 +257,38 @@ public class WebServiceSQL implements DBWServiceSQL {
         @NotNull String resultsId,
         @NotNull List<WebSQLResultsRow> selectedRows
     ) throws DBWebException {
+        checkAndFillTruncatedData(sqlContext, resultsId, selectedRows);
         WebDBDResultSetDataProvider dataProvider = new WebDBDResultSetDataProvider(resultsId, sqlContext, selectedRows);
         return createAndRunGenerator(webSession, generatorId, Collections.singletonList(dataProvider));
     }
 
+    private void checkAndFillTruncatedData(
+        @NotNull WebSQLContextInfo sqlContext,
+        @NotNull String resultsId,
+        @NotNull List<WebSQLResultsRow> selectedRows
+    ) throws DBWebException {
+        List<DBDAttributeBinding> attributes = Arrays.stream(sqlContext.getResults(resultsId).getAttributes())
+            .filter(attr -> canBeTruncated(attr.getDataKind()))
+            .toList();
+        for (WebSQLResultsRow row : selectedRows) {
+            Object[] data = row.getData();
+            for (DBDAttributeBinding attribute : attributes) {
+                int position = attribute.getOrdinalPosition();
+                boolean valueIsTruncated = data[position] != null &&
+                    data[position].toString().length() == WebSQLConstants.TEXT_PREVIEW_MAX_LENGTH;
+                if (valueIsTruncated) {
+                    data[position] = getCellValue(sqlContext, resultsId, position, row);
+                }
+            }
+        }
+    }
+
+    private boolean canBeTruncated(@NotNull DBPDataKind dataKind) {
+        return dataKind.equals(DBPDataKind.STRING) ||
+            dataKind.equals(DBPDataKind.CONTENT) ||
+            dataKind.equals(DBPDataKind.BINARY);
+    }
+
     private String createAndRunGenerator(
         @NotNull WebSession session,
         @NotNull String generatorId,