1 files changed, 100 insertions, 0 deletions
diff --git a/connectivity/source/drivers/firebird/Blob.hxx b/connectivity/source/drivers/firebird/Blob.hxx
new file mode 100644
index 000000000..990108934
--- /dev/null
+++ b/connectivity/source/drivers/firebird/Blob.hxx
@@ -0,0 +1,100 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include <ibase.h>
+
+#include <cppuhelper/compbase.hxx>
+
+#include <com/sun/star/io/XInputStream.hpp>
+#include <com/sun/star/sdbc/XBlob.hpp>
+
+#include <vector>
+
+namespace connectivity::firebird
+    {
+        typedef ::cppu::WeakComponentImplHelper< css::sdbc::XBlob,
+                                                 css::io::XInputStream >
+            Blob_BASE;
+
+        class Blob :
+            public Blob_BASE
+        {
+        protected:
+            ::osl::Mutex                    m_aMutex;
+
+            isc_db_handle*      m_pDatabaseHandle;
+            isc_tr_handle*      m_pTransactionHandle;
+            // We store our own copy of the blob id as typically the statement
+            // manages its own blob id, and blobs are independent of a statement
+            // in firebird.
+            ISC_QUAD            m_blobID;
+            isc_blob_handle     m_blobHandle;
+
+            bool                m_bBlobOpened;
+            sal_Int64           m_nBlobLength;
+            sal_uInt16          m_nMaxSegmentSize;
+            sal_Int64           m_nBlobPosition;
+
+            ISC_STATUS_ARRAY    m_statusVector;
+
+            /// @throws css::sdbc::SQLException
+            void ensureBlobIsOpened();
+            /**
+             * Closes the blob and cleans up resources -- can be used to reset
+             * the blob if we e.g. want to read from the beginning again.
+             *
+             * @throws css::sdbc::SQLException
+             */
+            void closeBlob();
+            sal_uInt16 getMaximumSegmentSize();
+
+        public:
+            Blob(isc_db_handle* pDatabaseHandle,
+                 isc_tr_handle* pTransactionHandle,
+                 ISC_QUAD const & aBlobID);
+
+            bool readOneSegment(std::vector<char>& rDataOut);
+
+            // ---- XBlob ----------------------------------------------------
+            virtual sal_Int64 SAL_CALL
+                length() override;
+            virtual css::uno::Sequence< sal_Int8 > SAL_CALL
+                getBytes(sal_Int64 aPosition, sal_Int32 aLength) override;
+            virtual css::uno::Reference< css::io::XInputStream > SAL_CALL
+                getBinaryStream() override;
+            virtual sal_Int64 SAL_CALL
+                position(const css::uno::Sequence< sal_Int8 >& rPattern,
+                         sal_Int64 aStart) override;
+            virtual sal_Int64 SAL_CALL
+                positionOfBlob(const css::uno::Reference< css::sdbc::XBlob >& rPattern,
+                               sal_Int64 aStart) override;
+
+            // ---- XInputStream ----------------------------------------------
+            virtual sal_Int32 SAL_CALL
+                readBytes(css::uno::Sequence< sal_Int8 >& rDataOut,
+                          sal_Int32 nBytes) override;
+            virtual sal_Int32 SAL_CALL
+                readSomeBytes(css::uno::Sequence< sal_Int8 >& rDataOut,
+                              sal_Int32 nMaximumBytes) override;
+            virtual void SAL_CALL
+                skipBytes(sal_Int32 nBytes) override;
+            virtual sal_Int32 SAL_CALL
+                available() override;
+            virtual void SAL_CALL
+                closeInput() override;
+
+            // ---- OComponentHelper ------------------------------------------
+            virtual void SAL_CALL disposing() override;
+        };
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */