diff options
Diffstat (limited to 'connectivity/source/drivers/jdbc/Blob.cxx')
| -rw-r--r-- | connectivity/source/drivers/jdbc/Blob.cxx | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/connectivity/source/drivers/jdbc/Blob.cxx b/connectivity/source/drivers/jdbc/Blob.cxx new file mode 100644 index 000000000..4531fc9b8 --- /dev/null +++ b/connectivity/source/drivers/jdbc/Blob.cxx @@ -0,0 +1,144 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * 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/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#include <java/sql/Blob.hxx> +#include <java/io/InputStream.hxx> +#include <connectivity/dbexception.hxx> +#include <osl/diagnose.h> + +#include <string.h> + +using namespace connectivity; + +//************ Class: java.sql.Blob + + +jclass java_sql_Blob::theClass = nullptr; +java_sql_Blob::java_sql_Blob( JNIEnv * pEnv, jobject myObj ) + : java_lang_Object( pEnv, myObj ) +{ + SDBThreadAttach::addRef(); +} +java_sql_Blob::~java_sql_Blob() +{ + SDBThreadAttach::releaseRef(); +} + +jclass java_sql_Blob::getMyClass() const +{ + // the class must be fetched only once, therefore it's static + if( !theClass ) + theClass = findMyClass("java/sql/Blob"); + return theClass; +} + +sal_Int64 SAL_CALL java_sql_Blob::length( ) +{ + jlong out(0); + SDBThreadAttach t; OSL_ENSURE(t.pEnv,"Java environment has been deleted!"); + + { + // initialize temporary variable + static const char * const cSignature = "()J"; + static const char * const cMethodName = "length"; + // submit Java-Call + static jmethodID mID(nullptr); + obtainMethodId_throwSQL(t.pEnv, cMethodName,cSignature, mID); + out = t.pEnv->CallLongMethod( object, mID ); + ThrowSQLException(t.pEnv,*this); + } //t.pEnv + return static_cast<sal_Int64>(out); +} +css::uno::Sequence< sal_Int8 > SAL_CALL java_sql_Blob::getBytes( sal_Int64 pos, sal_Int32 count ) +{ + + SDBThreadAttach t; OSL_ENSURE(t.pEnv,"Java environment has been deleted!"); + css::uno::Sequence< sal_Int8 > aSeq; + { + // initialize temporary variable + static const char * const cSignature = "(JI)[B"; + static const char * const cMethodName = "getBytes"; + // submit Java-Call + static jmethodID mID(nullptr); + obtainMethodId_throwSQL(t.pEnv, cMethodName,cSignature, mID); + jbyteArray out = static_cast<jbyteArray>(t.pEnv->CallObjectMethod( object, mID,pos,count)); + ThrowSQLException(t.pEnv,*this); + if(out) + { + jboolean p = false; + aSeq.realloc(t.pEnv->GetArrayLength(out)); + memcpy(aSeq.getArray(),t.pEnv->GetByteArrayElements(out,&p),aSeq.getLength()); + t.pEnv->DeleteLocalRef(out); + } + } //t.pEnv + // WARNING: the caller becomes the owner of the returned pointer + return aSeq; +} + +css::uno::Reference< css::io::XInputStream > SAL_CALL java_sql_Blob::getBinaryStream( ) +{ + SDBThreadAttach t; OSL_ENSURE(t.pEnv,"Java environment has been deleted!"); + static jmethodID mID(nullptr); + jobject out = callObjectMethod(t.pEnv,"getBinaryStream","()Ljava/io/InputStream;", mID); + // WARNING: the caller becomes the owner of the returned pointer + return out==nullptr ? nullptr : new java_io_InputStream( t.pEnv, out ); +} + +sal_Int64 SAL_CALL java_sql_Blob::position( const css::uno::Sequence< sal_Int8 >& pattern, sal_Int64 start ) +{ + jlong out(0); + SDBThreadAttach t; OSL_ENSURE(t.pEnv,"Java environment has been deleted!"); + + { + // initialize temporary variable + static const char * const cSignature = "([BI)J"; + static const char * const cMethodName = "position"; + // submit Java-Call + static jmethodID mID(nullptr); + obtainMethodId_throwSQL(t.pEnv, cMethodName,cSignature, mID); + // convert Parameter + jbyteArray pByteArray = t.pEnv->NewByteArray(pattern.getLength()); + jbyte * patternData = reinterpret_cast<jbyte *>( + const_cast<sal_Int8 *>(pattern.getConstArray())); + // 4th param of Set*ArrayRegion changed from pointer to non-const to + // pointer to const between <http://docs.oracle.com/javase/6/docs/ + // technotes/guides/jni/spec/functions.html#wp22933> and + // <http://docs.oracle.com/javase/7/docs/technotes/guides/jni/spec/ + // functions.html#wp22933>; work around that difference in a way + // that doesn't trigger loplugin:redundantcast + t.pEnv->SetByteArrayRegion(pByteArray,0,pattern.getLength(),patternData); + out = t.pEnv->CallLongMethod( object, mID, pByteArray,start ); + t.pEnv->DeleteLocalRef(pByteArray); + ThrowSQLException(t.pEnv,*this); + } //t.pEnv + return static_cast<sal_Int64>(out); +} + +sal_Int64 SAL_CALL java_sql_Blob::positionOfBlob( const css::uno::Reference< css::sdbc::XBlob >& /*pattern*/, sal_Int64 /*start*/ ) +{ + ::dbtools::throwFeatureNotImplementedSQLException( "XBlob::positionOfBlob", *this ); + // this was put here in CWS warnings01. The previous implementation was defective, as it did ignore + // the pattern parameter. Since the effort for proper implementation is rather high - we would need + // to translated pattern into a byte[] -, we defer this functionality for the moment (hey, it was + // unusable, anyway) + // #i57457# + return 0; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |