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/*
* Copyright (C) 2008 - 2013 Vivien Malerba <malerba@gnome-db.org>
* Copyright (C) 2010 David King <davidk@openismus.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "GdaInputStream.h"
#include "jni-wrapper.h"
#include <libgda/libgda.h>
#include <libgda/gda-blob-op.h>
#include <glib/gi18n-lib.h>
jclass GdaInputStream__class = NULL;
JNIEXPORT void
JNICALL Java_GdaInputStream_initIDs (JNIEnv *env, jclass klass)
{
GdaInputStream__class = (*env)->NewGlobalRef (env, klass);
}
JNIEXPORT jintArray
JNICALL Java_GdaInputStream_readData (JNIEnv *jenv, G_GNUC_UNUSED jobject obj,
jlong gda_blob_pointer, jlong offset, jlong size)
{
GdaBlob *blob = (GdaBlob*) jni_jlong_to_cpointer (gda_blob_pointer);
jintArray jdata;
if (!blob) {
jclass cls;
cls = (*jenv)->FindClass (jenv, "java/lang/IllegalArgumentException");
if (!cls) {
/* Unable to find the exception class */
return NULL;
}
(*jenv)->ThrowNew (jenv, cls, _("Invalid argument: NULL"));
return NULL;
}
guchar *raw_data;
jint *data;
GdaBlob *nblob = NULL;
gint real_size;
if (blob->op) {
nblob = g_new0 (GdaBlob, 1);
gda_blob_set_op (nblob, blob->op);
real_size = gda_blob_op_read (nblob->op, nblob, offset, size);
if (real_size < 0) {
/* throw an exception */
jclass cls;
cls = (*jenv)->FindClass (jenv, "java/sql/SQLException");
if (!cls) {
/* Unable to find the exception class */
return NULL;
}
(*jenv)->ThrowNew (jenv, cls, _("Can't read BLOB"));
return NULL;
}
raw_data = ((GdaBinary*) nblob)->data;
}
else {
GdaBinary *bin = (GdaBinary *) blob;
if (offset + size > bin->binary_length)
real_size = bin->binary_length - offset;
else
real_size = size;
raw_data = bin->data + offset;
}
/* convert bin->data to a jintArray */
int i;
data = g_new (jint, real_size);
for (i = 0; i < real_size; i++)
data[i] = (jint) (raw_data[i]);
jdata = (*jenv)->NewIntArray (jenv, real_size);
if ((*jenv)->ExceptionCheck (jenv)) {
jdata = NULL;
goto out;
}
(*jenv)->SetIntArrayRegion (jenv, jdata, 0, real_size, data);
if ((*jenv)->ExceptionCheck (jenv)) {
jdata = NULL;
(*jenv)->DeleteLocalRef (jenv, jdata);
goto out;
}
out:
g_free (data);
if (nblob)
gda_blob_free ((gpointer) nblob);
return jdata;
}
JNIEXPORT jbyteArray JNICALL
Java_GdaInputStream_readByteData (JNIEnv *jenv, G_GNUC_UNUSED jobject obj,
jlong gda_blob_pointer, jlong offset, jlong size)
{
GdaBlob *blob = (GdaBlob*) jni_jlong_to_cpointer (gda_blob_pointer);
jbyteArray jdata;
if (!blob) {
jclass cls;
cls = (*jenv)->FindClass (jenv, "java/lang/IllegalArgumentException");
if (!cls) {
/* Unable to find the exception class */
return NULL;
}
(*jenv)->ThrowNew (jenv, cls, _("Invalid argument: NULL"));
return NULL;
}
guchar *raw_data;
GdaBlob *nblob = NULL;
gint real_size;
if (blob->op) {
nblob = g_new0 (GdaBlob, 1);
gda_blob_set_op (nblob, blob->op);
real_size = gda_blob_op_read (nblob->op, nblob, offset, size);
if (real_size < 0) {
/* throw an exception */
jclass cls;
cls = (*jenv)->FindClass (jenv, "java/sql/SQLException");
if (!cls) {
/* Unable to find the exception class */
return NULL;
}
(*jenv)->ThrowNew (jenv, cls, _("Can't read BLOB"));
return NULL;
}
raw_data = ((GdaBinary*) nblob)->data;
}
else {
GdaBinary *bin = (GdaBinary *) blob;
if (offset + size > bin->binary_length)
real_size = bin->binary_length - offset;
else
real_size = size;
raw_data = bin->data + offset;
}
/* convert bin->data to a jintArray */
jdata = (*jenv)->NewByteArray (jenv, real_size);
if ((*jenv)->ExceptionCheck (jenv)) {
jdata = NULL;
goto out;
}
(*jenv)->SetByteArrayRegion (jenv, jdata, 0, real_size, (const jbyte *) raw_data);
if ((*jenv)->ExceptionCheck (jenv)) {
jdata = NULL;
(*jenv)->DeleteLocalRef (jenv, jdata);
goto out;
}
out:
if (nblob)
gda_blob_free ((gpointer) nblob);
return jdata;
}
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