f80b51ae44
Create a more effective implementation of XClob::length() and XClob::getSubString() methods, where string is read segment-by-segment instead of reading the whole underlying blob. That way it is possible to handle big texts which would not fit into memory. Also allow reading Clob data from a resultset with getString() and writing it in a prepared statement with setString(). Implement XPreparedStatement::setClob(). Also implement a private version of setClob() for creating a clob from OUString: Allow the creation of a clob column with GUI by adding a new type in ODataBaseMetaData::getTypeInfo(). Change-Id: Ibcbbdd80e8eed5e2a3fe55b0fa196401f1bcbcdf Reviewed-on: https://gerrit.libreoffice.org/47093 Reviewed-by: Tamás Bunth <btomi96@gmail.com> Tested-by: Tamás Bunth <btomi96@gmail.com>
70 lines
2.3 KiB
C++
70 lines
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#ifndef INCLUDED_CONNECTIVITY_SOURCE_DRIVERS_FIREBIRD_CLOB_HXX
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#define INCLUDED_CONNECTIVITY_SOURCE_DRIVERS_FIREBIRD_CLOB_HXX
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#include "Blob.hxx"
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#include <cppuhelper/compbase.hxx>
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#include <com/sun/star/io/XInputStream.hpp>
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#include <com/sun/star/sdbc/XClob.hpp>
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#include <rtl/ref.hxx>
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namespace connectivity
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{
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namespace firebird
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{
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typedef ::cppu::WeakComponentImplHelper< css::sdbc::XClob >
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Clob_BASE;
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class Clob :
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public Clob_BASE
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{
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protected:
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::osl::Mutex m_aMutex;
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/*
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* In Firebird Clob (textual Blob) is a subtype of blob,
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* hence we store the data in a Blob, and the Clob class is
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* a wrapper around that.
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*/
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rtl::Reference<connectivity::firebird::Blob> m_aBlob;
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sal_Int64 m_nCharCount;
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public:
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Clob(isc_db_handle* pDatabaseHandle,
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isc_tr_handle* pTransactionHandle,
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ISC_QUAD const & aBlobID);
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// ---- XClob ----------------------------------------------------
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virtual sal_Int64 SAL_CALL
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length() override;
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virtual ::rtl::OUString SAL_CALL
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getSubString(sal_Int64 aPosition, sal_Int32 aLength) override;
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virtual css::uno::Reference< css::io::XInputStream > SAL_CALL
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getCharacterStream() override;
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virtual sal_Int64 SAL_CALL
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position(const ::rtl::OUString& rPattern,
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sal_Int32 aStart) override;
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virtual sal_Int64 SAL_CALL
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positionOfClob(const ::css::uno::Reference< ::css::sdbc::XClob >& rPattern,
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sal_Int64 aStart) override;
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// ---- OComponentHelper ------------------------------------------
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virtual void SAL_CALL disposing() override;
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};
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}
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}
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#endif // INCLUDED_CONNECTIVITY_SOURCE_DRIVERS_FIREBIRD_CLOB_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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