#864 Increase default and maximum SQL info sizes

Author: mrotteveel

jaybird-native/src/main/java/org/firebirdsql/gds/ng/jna/JnaStatement.java

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2014-2024 Mark Rotteveel
+// SPDX-FileCopyrightText: Copyright 2014-2025 Mark Rotteveel
 // SPDX-FileCopyrightText: Copyright 2018 Artyom Smirnov
 // SPDX-FileCopyrightText: Copyright 2019 Vasiliy Yashkov
 // SPDX-License-Identifier: LGPL-2.1-or-later
@@ -439,14 +439,13 @@ public byte[] getSqlInfo(byte[] requestItems, int bufferLength) throws SQLExcept
 
     @Override
     public int getDefaultSqlInfoSize() {
-        // TODO Test for an optimal buffer size
         return getMaxSqlInfoSize();
     }
 
     @Override
     public int getMaxSqlInfoSize() {
-        // TODO Is this the actual max, or is it 65535?
-        return 32767;
+        // Theoretically, also Firebird 2.1, but not supported since before Jaybird 5
+        return getDatabase().getServerVersion().isEqualOrAbove(2, 5) ? 65535 : 32767;
     }
 
     @Override

src/main/org/firebirdsql/gds/ng/wire/version10/V10Statement.java

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2013-2024 Mark Rotteveel
+// SPDX-FileCopyrightText: Copyright 2013-2025 Mark Rotteveel
 // SPDX-FileCopyrightText: Copyright 2019 Vasiliy Yashkov
 // SPDX-License-Identifier: LGPL-2.1-or-later
 package org.firebirdsql.gds.ng.wire.version10;
@@ -635,13 +635,11 @@ protected void processAllocateResponse(GenericResponse response) throws SQLExcep
 
     @Override
     public int getDefaultSqlInfoSize() {
-        // TODO Test for an optimal buffer size
         return getMaxSqlInfoSize();
     }
 
     @Override
     public int getMaxSqlInfoSize() {
-        // TODO Is this the actual max for the v10 protocol, or is it 65535?
         return 32767;
     }
 }

src/main/org/firebirdsql/gds/ng/wire/version12/V12Statement.java

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2014-2017 Mark Rotteveel
+// SPDX-FileCopyrightText: Copyright 2014-2025 Mark Rotteveel
 // SPDX-License-Identifier: LGPL-2.1-or-later
 package org.firebirdsql.gds.ng.wire.version12;
 
@@ -20,4 +20,10 @@ public V12Statement(FbWireDatabase database) {
         super(database);
     }
 
+    @Override
+    public int getMaxSqlInfoSize() {
+        // Theoretically, also protocol 11 (Firebird 2.1), but not supported since before Jaybird 5
+        return 65535;
+    }
+
 }

src/main/org/firebirdsql/gds/ng/wire/version13/V13Statement.java

@@ -1,5 +1,5 @@
 // SPDX-FileCopyrightText: Copyright 2015 Hajime Nakagami
-// SPDX-FileCopyrightText: Copyright 2015-2023 Mark Rotteveel
+// SPDX-FileCopyrightText: Copyright 2015-2025 Mark Rotteveel
 // SPDX-License-Identifier: LGPL-2.1-or-later
 package org.firebirdsql.gds.ng.wire.version13;
 
@@ -84,4 +84,17 @@ protected void writeSqlData(XdrOutputStream xdrOut, BlrCalculator blrCalculator,
             }
         }
     }
+
+    @Override
+    public int getDefaultSqlInfoSize() {
+        return 512 * 1024;
+    }
+
+    @Override
+    public int getMaxSqlInfoSize() {
+        // It can be higher: 0xFFFE_FFFF serverside, and Integer.MAX_VALUE - 8 due to Java array size limitations
+        // 16 MiB is probably already excessive
+        return 16 * 1024 * 1024;
+    }
+
 }