jdbc/Clob.cxx

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#include <java/sql/Clob.hxx>
#include <java/tools.hxx>
#include <java/io/Reader.hxx>
#include <connectivity/dbexception.hxx>
#include <osl/diagnose.h>
 
using namespace connectivity;
 
//************ Class: java.sql.Clob
 
 
jclass java_sql_Clob::theClass = nullptr;
 
java_sql_Clob::java_sql_Clob( JNIEnv * pEnv, jobject myObj )
    : java_lang_Object( pEnv, myObj )
{
    SDBThreadAttach::addRef();
}
java_sql_Clob::~java_sql_Clob()
{
    SDBThreadAttach::releaseRef();
}
 
jclass java_sql_Clob::getMyClass() const
{
    // the class must be fetched only once, therefore static
    if( !theClass )
        theClass = findMyClass("java/sql/Clob");
    return theClass;
}
 
sal_Int64 SAL_CALL java_sql_Clob::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";
        // execute 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);
}
 
OUString SAL_CALL java_sql_Clob::getSubString( sal_Int64 pos, sal_Int32 subStringLength )
{
    SDBThreadAttach t; OSL_ENSURE(t.pEnv,"Java environment has been deleted!");
    OUString aStr;
    {
        // initialize temporary variable
        static const char * const cSignature = "(JI)Ljava/lang/String;";
        static const char * const cMethodName = "getSubString";
        // execute Java-Call
        static jmethodID mID(nullptr);
        obtainMethodId_throwSQL(t.pEnv, cMethodName,cSignature, mID);
        jstring out = static_cast<jstring>(t.pEnv->CallObjectMethod( object, mID,pos,subStringLength));
        ThrowSQLException(t.pEnv,*this);
        aStr = JavaString2String(t.pEnv,out);
    } //t.pEnv
    // WARNING: the caller becomes the owner of the returned pointer
    return  aStr;
}
 
css::uno::Reference< css::io::XInputStream > SAL_CALL java_sql_Clob::getCharacterStream(  )
{
    SDBThreadAttach t;
    static jmethodID mID(nullptr);
    jobject out = callObjectMethod(t.pEnv,"getCharacterStream","()Ljava/io/Reader;", mID);
 
    // WARNING: the caller becomes the owner of the returned pointer
    return out==nullptr ? nullptr : new java_io_Reader( t.pEnv, out );
}
 
sal_Int64 SAL_CALL java_sql_Clob::position( const OUString& searchstr, sal_Int32 start )
{
    jlong out(0);
    SDBThreadAttach t; OSL_ENSURE(t.pEnv,"Java environment has been deleted!");
 
    {
        jvalue args[1];
        // convert Parameter
        args[0].l = convertwchar_tToJavaString(t.pEnv,searchstr);
        // initialize temporary Variable
        static const char * const cSignature = "(Ljava/lang/String;I)J";
        static const char * const cMethodName = "position";
        // execute Java-Call
        static jmethodID mID(nullptr);
        obtainMethodId_throwSQL(t.pEnv, cMethodName,cSignature, mID);
        out = t.pEnv->CallLongMethod( object, mID, args[0].l,start );
        ThrowSQLException(t.pEnv,*this);
        t.pEnv->DeleteLocalRef(static_cast<jstring>(args[0].l));
    } //t.pEnv
    return static_cast<sal_Int64>(out);
}
 
sal_Int64 SAL_CALL java_sql_Clob::positionOfClob( const css::uno::Reference< css::sdbc::XClob >& /*pattern*/, sal_Int64 /*start*/ )
{
    ::dbtools::throwFeatureNotImplementedSQLException( "XClob::positionOfClob", *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)
    // 2005-11-15 / #i57457# / frank.schoenheit@sun.com
    return 0;
}
 
 
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