connectivity/source/drivers/jdbc/InputStream.cxx

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  28
  29 #include "java/io/InputStream.hxx"
  30 #include "java/tools.hxx"
  31
  32 #include <string.h>
  33
  34 using namespace connectivity;
  35 //**************************************************************
  36 //************ Class: java.io.InputStream
  37 //**************************************************************
  38
  39 jclass java_io_InputStream::theClass = 0;
  40 java_io_InputStream::java_io_InputStream( JNIEnv * pEnv, jobject myObj )
  41     : java_lang_Object( pEnv, myObj )
  42 {
  43     SDBThreadAttach::addRef();
  44 }
  45 java_io_InputStream::~java_io_InputStream()
  46 {
  47     SDBThreadAttach::releaseRef();
  48 }
  49
  50 jclass java_io_InputStream::getMyClass() const
  51 {
  52     // the class must be fetched only once, therefore static
  53     if( !theClass )
  54         theClass = findMyClass("java/io/InputStream");
  55     return theClass;
  56 }
  57
  58
  59 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)
  60 {
  61     return readBytes(aData,nMaxBytesToRead);
  62 }
  63
  64 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)
  65 {
  66     static jmethodID mID(NULL);
  67     callIntMethodWithIntArg("skip",mID,nBytesToSkip);
  68 }
  69
  70 sal_Int32 SAL_CALL java_io_InputStream::available(  ) throw(::com::sun::star::io::NotConnectedException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException)
  71 {
  72     static jmethodID mID(NULL);
  73     return callIntMethod("available",mID);
  74 }
  75 void SAL_CALL java_io_InputStream::closeInput(  ) throw(::com::sun::star::io::NotConnectedException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException)
  76 {
  77     static jmethodID mID(NULL);
  78     callVoidMethod("close",mID);
  79 }
  80 // -----------------------------------------------------
  81 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)
  82 {
  83     if (nBytesToRead < 0)
  84         throw ::com::sun::star::io::BufferSizeExceededException( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( OSL_LOG_PREFIX ) ), *this );
  85
  86     jint out(0);
  87     SDBThreadAttach t; OSL_ENSURE(t.pEnv,"Java Enviroment geloescht worden!");
  88
  89     {
  90         jbyteArray pByteArray = t.pEnv->NewByteArray(nBytesToRead);
  91         static const char * cSignature = "([BII)I";
  92         static const char * cMethodName = "read";
  93         // execute Java-Call
  94         static jmethodID mID(NULL);
  95         obtainMethodId(t.pEnv, cMethodName,cSignature, mID);
  96         out = t.pEnv->CallIntMethod( object, mID, pByteArray, 0, nBytesToRead );
  97         if ( !out )
  98             ThrowSQLException(t.pEnv,*this);
  99         if(out > 0)
 100         {
 101             jboolean p = sal_False;
 102             aData.realloc ( out );
 103             rtl_copyMemory(aData.getArray(),t.pEnv->GetByteArrayElements(pByteArray,&p),out);
 104         }
 105         t.pEnv->DeleteLocalRef((jbyteArray)pByteArray);
 106     } //t.pEnv
 107     return out;
 108 }
 109
 110 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */