connectivity/source/drivers/jdbc/InputStream.cxx

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   9  * $RCSfile: InputStream.cxx,v $
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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_connectivity.hxx"
  33 #include "java/io/InputStream.hxx"
  34 #include "java/tools.hxx"
  35
  36 #include <string.h>
  37
  38 using namespace connectivity;
  39 //**************************************************************
  40 //************ Class: java.io.InputStream
  41 //**************************************************************
  42
  43 jclass java_io_InputStream::theClass = 0;
  44 java_io_InputStream::java_io_InputStream( JNIEnv * pEnv, jobject myObj )
  45     : java_lang_Object( pEnv, myObj )
  46 {
  47     SDBThreadAttach::addRef();
  48 }
  49 java_io_InputStream::~java_io_InputStream()
  50 {
  51     SDBThreadAttach::releaseRef();
  52 }
  53
  54 jclass java_io_InputStream::getMyClass() const
  55 {
  56     // die Klasse muss nur einmal geholt werden, daher statisch
  57     if( !theClass )
  58         theClass = findMyClass("java/io/InputStream");
  59     return theClass;
  60 }
  61
  62
  63 sal_Int32 SAL_CALL java_io_InputStream::readSomeBytes( ::com::sun::star::uno::Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead ) throw(::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException)
  64 {
  65     return readBytes(aData,nMaxBytesToRead);
  66 }
  67
  68 void SAL_CALL java_io_InputStream::skipBytes( sal_Int32 nBytesToSkip ) throw(::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException)
  69 {
  70     static jmethodID mID(NULL);
  71     callIntMethodWithIntArg("skip",mID,nBytesToSkip);
  72 }
  73
  74 sal_Int32 SAL_CALL java_io_InputStream::available(  ) throw(::com::sun::star::io::NotConnectedException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException)
  75 {
  76     static jmethodID mID(NULL);
  77     return callIntMethod("available",mID);
  78 }
  79 void SAL_CALL java_io_InputStream::closeInput(  ) throw(::com::sun::star::io::NotConnectedException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException)
  80 {
  81     static jmethodID mID(NULL);
  82     callVoidMethod("close",mID);
  83 }
  84 // -----------------------------------------------------
  85 sal_Int32 SAL_CALL java_io_InputStream::readBytes( ::com::sun::star::uno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead ) throw(::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException)
  86 {
  87     if ( aData.getLength() < nBytesToRead )
  88         throw ::com::sun::star::io::BufferSizeExceededException();
  89     jint out(0);
  90     SDBThreadAttach t; OSL_ENSURE(t.pEnv,"Java Enviroment geloescht worden!");
  91
  92     {
  93         jbyteArray pByteArray = t.pEnv->NewByteArray(nBytesToRead);
  94         static const char * cSignature = "([BII)I";
  95         static const char * cMethodName = "read";
  96         // Java-Call absetzen
  97         static jmethodID mID(NULL);
  98         obtainMethodId(t.pEnv, cMethodName,cSignature, mID);
  99         out = t.pEnv->CallIntMethod( object, mID, pByteArray, 0, nBytesToRead );
 100         if ( !out )
 101             ThrowSQLException(t.pEnv,*this);
 102         if(out > 0)
 103         {
 104             jboolean p = sal_False;
 105             memcpy(aData.getArray(),t.pEnv->GetByteArrayElements(pByteArray,&p),out);
 106         }
 107         t.pEnv->DeleteLocalRef((jbyteArray)pByteArray);
 108     } //t.pEnv
 109     return out;
 110 }
 111