summaryrefslogtreecommitdiffstats
path: root/connectivity/source/drivers/firebird/Blob.hxx
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--connectivity/source/drivers/firebird/Blob.hxx100
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: */