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/* //device/libs/android_runtime/android_database_SQLiteCursor.cpp
**
** Copyright 2006, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#undef LOG_TAG
#define LOG_TAG "Cursor"
#include <jni.h>
#include <JNIHelp.h>
#include <android_runtime/AndroidRuntime.h>
#include <sqlite3.h>
#include <utils/Log.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "sqlite3_exception.h"
namespace android {
sqlite3_stmt * compile(JNIEnv* env, jobject object,
sqlite3 * handle, jstring sqlString);
static jfieldID gHandleField;
static jfieldID gStatementField;
#define GET_STATEMENT(env, object) \
(sqlite3_stmt *)env->GetIntField(object, gStatementField)
#define GET_HANDLE(env, object) \
(sqlite3 *)env->GetIntField(object, gHandleField)
static void native_execute(JNIEnv* env, jobject object)
{
int err;
sqlite3 * handle = GET_HANDLE(env, object);
sqlite3_stmt * statement = GET_STATEMENT(env, object);
// Execute the statement
err = sqlite3_step(statement);
// Throw an exception if an error occured
if (err != SQLITE_DONE) {
throw_sqlite3_exception_errcode(env, err, sqlite3_errmsg(handle));
}
// Reset the statment so it's ready to use again
sqlite3_reset(statement);
}
static jlong native_1x1_long(JNIEnv* env, jobject object)
{
int err;
sqlite3 * handle = GET_HANDLE(env, object);
sqlite3_stmt * statement = GET_STATEMENT(env, object);
jlong value = -1;
// Execute the statement
err = sqlite3_step(statement);
// Handle the result
if (err == SQLITE_ROW) {
// No errors, read the data and return it
value = sqlite3_column_int64(statement, 0);
} else {
throw_sqlite3_exception_errcode(env, err, sqlite3_errmsg(handle));
}
// Reset the statment so it's ready to use again
sqlite3_reset(statement);
return value;
}
static jstring native_1x1_string(JNIEnv* env, jobject object)
{
int err;
sqlite3 * handle = GET_HANDLE(env, object);
sqlite3_stmt * statement = GET_STATEMENT(env, object);
jstring value = NULL;
// Execute the statement
err = sqlite3_step(statement);
// Handle the result
if (err == SQLITE_ROW) {
// No errors, read the data and return it
char const * text = (char const *)sqlite3_column_text(statement, 0);
value = env->NewStringUTF(text);
} else {
throw_sqlite3_exception_errcode(env, err, sqlite3_errmsg(handle));
}
// Reset the statment so it's ready to use again
sqlite3_reset(statement);
return value;
}
static JNINativeMethod sMethods[] =
{
/* name, signature, funcPtr */
{"native_execute", "()V", (void *)native_execute},
{"native_1x1_long", "()J", (void *)native_1x1_long},
{"native_1x1_string", "()Ljava/lang/String;", (void *)native_1x1_string},
};
int register_android_database_SQLiteStatement(JNIEnv * env)
{
jclass clazz;
clazz = env->FindClass("android/database/sqlite/SQLiteStatement");
if (clazz == NULL) {
LOGE("Can't find android/database/sqlite/SQLiteStatement");
return -1;
}
gHandleField = env->GetFieldID(clazz, "nHandle", "I");
gStatementField = env->GetFieldID(clazz, "nStatement", "I");
if (gHandleField == NULL || gStatementField == NULL) {
LOGE("Error locating fields");
return -1;
}
return AndroidRuntime::registerNativeMethods(env,
"android/database/sqlite/SQLiteStatement", sMethods, NELEM(sMethods));
}
} // namespace android
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