143 lines
5.6 KiB
C++
143 lines
5.6 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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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <java/sql/Blob.hxx>
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#include <java/io/InputStream.hxx>
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#include <connectivity/dbexception.hxx>
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#include <osl/diagnose.h>
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#include <string.h>
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using namespace connectivity;
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//************ Class: java.sql.Blob
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jclass java_sql_Blob::theClass = nullptr;
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java_sql_Blob::java_sql_Blob( JNIEnv * pEnv, jobject myObj )
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: java_lang_Object( pEnv, myObj )
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{
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SDBThreadAttach::addRef();
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}
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java_sql_Blob::~java_sql_Blob()
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{
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SDBThreadAttach::releaseRef();
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}
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jclass java_sql_Blob::getMyClass() const
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{
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// the class must be fetched only once, therefore it's static
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if( !theClass )
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theClass = findMyClass("java/sql/Blob");
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return theClass;
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}
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sal_Int64 SAL_CALL java_sql_Blob::length( )
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{
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jlong out(0);
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SDBThreadAttach t; OSL_ENSURE(t.pEnv,"Java environment has been deleted!");
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{
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// initialize temporary variable
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static const char * const cSignature = "()J";
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static const char * const cMethodName = "length";
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// submit Java-Call
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static jmethodID mID(nullptr);
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obtainMethodId_throwSQL(t.pEnv, cMethodName,cSignature, mID);
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out = t.pEnv->CallLongMethod( object, mID );
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ThrowSQLException(t.pEnv,*this);
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} //t.pEnv
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return static_cast<sal_Int64>(out);
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}
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css::uno::Sequence< sal_Int8 > SAL_CALL java_sql_Blob::getBytes( sal_Int64 pos, sal_Int32 count )
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{
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SDBThreadAttach t; OSL_ENSURE(t.pEnv,"Java environment has been deleted!");
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css::uno::Sequence< sal_Int8 > aSeq;
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{
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// initialize temporary variable
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static const char * const cSignature = "(JI)[B";
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static const char * const cMethodName = "getBytes";
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// submit Java-Call
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static jmethodID mID(nullptr);
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obtainMethodId_throwSQL(t.pEnv, cMethodName,cSignature, mID);
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jbyteArray out = static_cast<jbyteArray>(t.pEnv->CallObjectMethod( object, mID,pos,count));
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ThrowSQLException(t.pEnv,*this);
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if(out)
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{
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jboolean p = false;
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aSeq.realloc(t.pEnv->GetArrayLength(out));
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memcpy(aSeq.getArray(),t.pEnv->GetByteArrayElements(out,&p),aSeq.getLength());
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t.pEnv->DeleteLocalRef(out);
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}
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} //t.pEnv
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// WARNING: the caller becomes the owner of the returned pointer
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return aSeq;
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}
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css::uno::Reference< css::io::XInputStream > SAL_CALL java_sql_Blob::getBinaryStream( )
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{
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SDBThreadAttach t; OSL_ENSURE(t.pEnv,"Java environment has been deleted!");
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static jmethodID mID(nullptr);
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jobject out = callObjectMethod(t.pEnv,"getBinaryStream","()Ljava/io/InputStream;", mID);
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// WARNING: the caller becomes the owner of the returned pointer
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return out==nullptr ? nullptr : new java_io_InputStream( t.pEnv, out );
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}
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sal_Int64 SAL_CALL java_sql_Blob::position( const css::uno::Sequence< sal_Int8 >& pattern, sal_Int64 start )
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{
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jlong out(0);
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SDBThreadAttach t; OSL_ENSURE(t.pEnv,"Java environment has been deleted!");
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{
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// initialize temporary variable
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static const char * const cSignature = "([BI)J";
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static const char * const cMethodName = "position";
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// submit Java-Call
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static jmethodID mID(nullptr);
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obtainMethodId_throwSQL(t.pEnv, cMethodName,cSignature, mID);
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// convert Parameter
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jbyteArray pByteArray = t.pEnv->NewByteArray(pattern.getLength());
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jbyte * patternData = reinterpret_cast<jbyte *>(
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const_cast<sal_Int8 *>(pattern.getConstArray()));
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// 4th param of Set*ArrayRegion changed from pointer to non-const to
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// pointer to const between <http://docs.oracle.com/javase/6/docs/
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// technotes/guides/jni/spec/functions.html#wp22933> and
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// <http://docs.oracle.com/javase/7/docs/technotes/guides/jni/spec/
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// functions.html#wp22933>; work around that difference in a way
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// that doesn't trigger loplugin:redundantcast
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t.pEnv->SetByteArrayRegion(pByteArray,0,pattern.getLength(),patternData);
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out = t.pEnv->CallLongMethod( object, mID, pByteArray,start );
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t.pEnv->DeleteLocalRef(pByteArray);
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ThrowSQLException(t.pEnv,*this);
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} //t.pEnv
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return static_cast<sal_Int64>(out);
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}
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sal_Int64 SAL_CALL java_sql_Blob::positionOfBlob( const css::uno::Reference< css::sdbc::XBlob >& /*pattern*/, sal_Int64 /*start*/ )
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{
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::dbtools::throwFeatureNotImplementedSQLException( u"XBlob::positionOfBlob"_ustr, *this );
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// this was put here in CWS warnings01. The previous implementation was defective, as it did ignore
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// the pattern parameter. Since the effort for proper implementation is rather high - we would need
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// to translated pattern into a byte[] -, we defer this functionality for the moment (hey, it was
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// unusable, anyway)
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// #i57457#
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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