connectivity/source/drivers/jdbc/Reader.cxx

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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/Reader.hxx"
  34 #ifndef _INC_MEMORY
  35 //#include <memory.h>
  36 #endif
  37 #include <string.h>
  38 using namespace connectivity;
  39 //**************************************************************
  40 //************ Class: java.io.Reader
  41 //**************************************************************
  42
  43 jclass java_io_Reader::theClass = 0;
  44 java_io_Reader::java_io_Reader( JNIEnv * pEnv, jobject myObj )
  45     : java_lang_Object( pEnv, myObj )
  46 {
  47     SDBThreadAttach::addRef();
  48 }
  49 java_io_Reader::~java_io_Reader()
  50 {
  51     SDBThreadAttach::releaseRef();
  52 }
  53
  54 jclass java_io_Reader::getMyClass() const
  55 {
  56     // die Klasse muss nur einmal geholt werden, daher statisch
  57     if( !theClass )
  58         theClass = findMyClass("java/io/Reader");
  59     return theClass;
  60 }
  61
  62 sal_Int32 SAL_CALL java_io_Reader::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)
  63 {
  64     return readBytes(aData,nMaxBytesToRead);
  65 }
  66
  67 void SAL_CALL java_io_Reader::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)
  68 {
  69     static jmethodID mID(NULL);
  70     callIntMethodWithIntArg("skip",mID,nBytesToSkip);
  71 }
  72
  73 sal_Int32 SAL_CALL java_io_Reader::available(  ) throw(::com::sun::star::io::NotConnectedException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException)
  74 {
  75     jboolean out(sal_False);
  76     SDBThreadAttach t; OSL_ENSURE(t.pEnv,"Java Enviroment geloescht worden!");
  77
  78     {
  79         static const char * cSignature = "()Z";
  80         static const char * cMethodName = "available";
  81         // Java-Call absetzen
  82         static jmethodID mID(NULL);
  83         obtainMethodId(t.pEnv, cMethodName,cSignature, mID);
  84         out = t.pEnv->CallBooleanMethod( object, mID);
  85         ThrowSQLException(t.pEnv,*this);
  86     } //t.pEnv
  87     return out;
  88 }
  89
  90 void SAL_CALL java_io_Reader::closeInput(  ) throw(::com::sun::star::io::NotConnectedException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException)
  91 {
  92     static jmethodID mID(NULL);
  93     callVoidMethod("close",mID);
  94 }
  95 // -----------------------------------------------------
  96 sal_Int32 SAL_CALL java_io_Reader::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)
  97 {
  98     OSL_ENSURE(aData.getLength() < nBytesToRead," Sequence is smaller than BytesToRead");
  99     jint out(0);
 100     SDBThreadAttach t; OSL_ENSURE(t.pEnv,"Java Enviroment geloescht worden!");
 101
 102     {
 103         jcharArray pCharArray = t.pEnv->NewCharArray(nBytesToRead);
 104         static const char * cSignature = "([CII)I";
 105         static const char * cMethodName = "read";
 106         // Java-Call absetzen
 107         static jmethodID mID(NULL);
 108         obtainMethodId(t.pEnv, cMethodName,cSignature, mID);
 109         out = t.pEnv->CallIntMethod( object, mID, pCharArray, 0, nBytesToRead );
 110         if ( !out )
 111             ThrowSQLException(t.pEnv,*this);
 112         if(out > 0)
 113         {
 114             jboolean p = sal_False;
 115             if(aData.getLength() < out)
 116                 aData.realloc(out-aData.getLength());
 117
 118             memcpy(aData.getArray(),t.pEnv->GetCharArrayElements(pCharArray,&p),out);
 119         }
 120         t.pEnv->DeleteLocalRef((jcharArray)pCharArray);
 121     } //t.pEnv
 122     return out;
 123 }
 124