1 files changed, 240 insertions, 0 deletions
diff --git a/core/jni/android_database_SQLiteProgram.cpp b/core/jni/android_database_SQLiteProgram.cpp
new file mode 100644
index 0000000..54e7de2
--- /dev/null
+++ b/core/jni/android_database_SQLiteProgram.cpp
@@ -0,0 +1,240 @@
+/*
+ * Copyright (C) 2006-2008 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 {
+
+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)
+
+
+sqlite3_stmt * compile(JNIEnv* env, jobject object,
+                       sqlite3 * handle, jstring sqlString)
+{
+    int err;
+    jchar const * sql;
+    jsize sqlLen;
+    sqlite3_stmt * statement = GET_STATEMENT(env, object);
+
+    // Make sure not to leak the statement if it already exists
+    if (statement != NULL) {
+        sqlite3_finalize(statement);
+        env->SetIntField(object, gStatementField, 0);
+    }
+
+    // Compile the SQL
+    sql = env->GetStringChars(sqlString, NULL);
+    sqlLen = env->GetStringLength(sqlString);
+    err = sqlite3_prepare16_v2(handle, sql, sqlLen * 2, &statement, NULL);
+    env->ReleaseStringChars(sqlString, sql);
+
+    if (err == SQLITE_OK) {
+        // Store the statement in the Java object for future calls
+        LOGV("Prepared statement %p on %p", statement, handle);
+        env->SetIntField(object, gStatementField, (int)statement);
+        return statement;
+    } else {
+        // Error messages like 'near ")": syntax error' are not
+        // always helpful enough, so construct an error string that
+        // includes the query itself.
+        const char *query = env->GetStringUTFChars(sqlString, NULL);
+        char *message = (char*) malloc(strlen(query) + 50);
+        if (message) {
+            strcpy(message, ", while compiling: "); // less than 50 chars
+            strcat(message, query);
+        }
+        env->ReleaseStringUTFChars(sqlString, query);
+        throw_sqlite3_exception(env, handle, message);
+        free(message);
+        return NULL;
+    }
+}
+
+static void native_compile(JNIEnv* env, jobject object, jstring sqlString)
+{
+    compile(env, object, GET_HANDLE(env, object), sqlString);
+}
+
+static void native_bind_null(JNIEnv* env, jobject object,
+                             jint index)
+{
+    int err;
+    sqlite3_stmt * statement = GET_STATEMENT(env, object);
+
+    err = sqlite3_bind_null(statement, index);
+    if (err != SQLITE_OK) {
+        char buf[32];
+        sprintf(buf, "handle %p", statement);
+        throw_sqlite3_exception(env, GET_HANDLE(env, object), buf);
+        return;
+    }
+}
+
+static void native_bind_long(JNIEnv* env, jobject object,
+                             jint index, jlong value)
+{
+    int err;
+    sqlite3_stmt * statement = GET_STATEMENT(env, object);
+
+    err = sqlite3_bind_int64(statement, index, value);
+    if (err != SQLITE_OK) {
+        char buf[32];
+        sprintf(buf, "handle %p", statement);
+        throw_sqlite3_exception(env, GET_HANDLE(env, object), buf);
+        return;
+    }
+}
+
+static void native_bind_double(JNIEnv* env, jobject object,
+                             jint index, jdouble value)
+{
+    int err;
+    sqlite3_stmt * statement = GET_STATEMENT(env, object);
+
+    err = sqlite3_bind_double(statement, index, value);
+    if (err != SQLITE_OK) {
+        char buf[32];
+        sprintf(buf, "handle %p", statement);
+        throw_sqlite3_exception(env, GET_HANDLE(env, object), buf);
+        return;
+    }
+}
+
+static void native_bind_string(JNIEnv* env, jobject object,
+                               jint index, jstring sqlString)
+{
+    int err;
+    jchar const * sql;
+    jsize sqlLen;
+    sqlite3_stmt * statement= GET_STATEMENT(env, object);
+
+    sql = env->GetStringChars(sqlString, NULL);
+    sqlLen = env->GetStringLength(sqlString);
+    err = sqlite3_bind_text16(statement, index, sql, sqlLen * 2, SQLITE_TRANSIENT);
+    env->ReleaseStringChars(sqlString, sql);
+    if (err != SQLITE_OK) {
+        char buf[32];
+        sprintf(buf, "handle %p", statement);
+        throw_sqlite3_exception(env, GET_HANDLE(env, object), buf);
+        return;
+    }
+}
+
+static void native_bind_blob(JNIEnv* env, jobject object,
+                               jint index, jbyteArray value)
+{
+    int err;
+    jchar const * sql;
+    jsize sqlLen;
+    sqlite3_stmt * statement= GET_STATEMENT(env, object);
+
+    jint len = env->GetArrayLength(value);    
+    jbyte * bytes = env->GetByteArrayElements(value, NULL);
+
+    err = sqlite3_bind_blob(statement, index, bytes, len, SQLITE_TRANSIENT);
+    env->ReleaseByteArrayElements(value, bytes, JNI_ABORT);
+
+    if (err != SQLITE_OK) {
+        char buf[32];
+        sprintf(buf, "handle %p", statement);
+        throw_sqlite3_exception(env, GET_HANDLE(env, object), buf);
+        return;
+    }
+}
+
+static void native_clear_bindings(JNIEnv* env, jobject object)
+{
+    int err;
+    sqlite3_stmt * statement = GET_STATEMENT(env, object);
+
+    err = sqlite3_clear_bindings(statement);
+    if (err != SQLITE_OK) {
+        throw_sqlite3_exception(env, GET_HANDLE(env, object));
+        return;
+    }
+}
+
+static void native_finalize(JNIEnv* env, jobject object)
+{
+    int err;
+    sqlite3_stmt * statement = GET_STATEMENT(env, object);
+
+    if (statement != NULL) {
+        sqlite3_finalize(statement);
+        env->SetIntField(object, gStatementField, 0);
+    }
+}
+
+
+static JNINativeMethod sMethods[] =
+{
+     /* name, signature, funcPtr */
+    {"native_compile", "(Ljava/lang/String;)V", (void *)native_compile},
+    {"native_bind_null", "(I)V", (void *)native_bind_null},
+    {"native_bind_long", "(IJ)V", (void *)native_bind_long},
+    {"native_bind_double", "(ID)V", (void *)native_bind_double},
+    {"native_bind_string", "(ILjava/lang/String;)V", (void *)native_bind_string},
+    {"native_bind_blob", "(I[B)V", (void *)native_bind_blob},    
+    {"native_clear_bindings", "()V", (void *)native_clear_bindings},
+    {"native_finalize", "()V", (void *)native_finalize},
+};
+
+int register_android_database_SQLiteProgram(JNIEnv * env)
+{
+    jclass clazz;
+
+    clazz = env->FindClass("android/database/sqlite/SQLiteProgram");
+    if (clazz == NULL) {
+        LOGE("Can't find android/database/sqlite/SQLiteProgram");
+        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/SQLiteProgram", sMethods, NELEM(sMethods));
+}
+
+} // namespace android