| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| |
| #include <string.h> |
| |
| #include "SqLiteHelper.hpp" |
| |
| #define QUERY_SIZE 512 |
| |
| int SqLiteHelper::initDB(const char *regionName, int maxPageCount, int pageSize, |
| const char *regionDBfile, int busy_timeout_ms) { |
| // open the database |
| int retCode = sqlite3_open(regionDBfile, &m_dbHandle); |
| if (retCode == SQLITE_OK) { |
| // set region name to tablename. database name is also table name |
| m_tableName = regionName; |
| sqlite3_busy_timeout(m_dbHandle, busy_timeout_ms); |
| |
| // configure max page count |
| if (maxPageCount > 0) { |
| retCode = executePragma("max_page_count", maxPageCount); |
| } |
| |
| if (retCode == SQLITE_OK && pageSize > 0) { |
| retCode = executePragma("page_size", pageSize); |
| } |
| |
| // create table |
| if (retCode == SQLITE_OK) retCode = createTable(); |
| } |
| |
| return retCode; |
| } |
| |
| int SqLiteHelper::createTable() { |
| // construct query |
| char query[QUERY_SIZE]; |
| SNPRINTF(query, QUERY_SIZE, |
| "CREATE TABLE IF NOT EXISTS %s(key BLOB PRIMARY KEY,value BLOB);", |
| m_tableName); |
| sqlite3_stmt *stmt; |
| |
| // prepare statement |
| int retCode; |
| retCode = sqlite3_prepare_v2(m_dbHandle, query, -1, &stmt, nullptr); |
| |
| // execute statement |
| if (retCode == SQLITE_OK) retCode = sqlite3_step(stmt); |
| sqlite3_finalize(stmt); |
| return retCode == SQLITE_DONE ? 0 : retCode; |
| } |
| |
| int SqLiteHelper::insertKeyValue(void *keyData, int keyDataSize, |
| void *valueData, int valueDataSize) { |
| // construct query |
| char query[QUERY_SIZE]; |
| SNPRINTF(query, QUERY_SIZE, "REPLACE INTO %s VALUES(?,?);", m_tableName); |
| |
| // prepare statement |
| sqlite3_stmt *stmt; |
| int retCode = sqlite3_prepare_v2(m_dbHandle, query, -1, &stmt, nullptr); |
| if (retCode == SQLITE_OK) { |
| // bind parameters and execte statement |
| sqlite3_bind_blob(stmt, 1, keyData, keyDataSize, nullptr); |
| sqlite3_bind_blob(stmt, 2, valueData, valueDataSize, nullptr); |
| retCode = sqlite3_step(stmt); |
| } |
| |
| sqlite3_finalize(stmt); |
| return retCode == SQLITE_DONE ? 0 : retCode; |
| } |
| |
| int SqLiteHelper::removeKey(void *keyData, int keyDataSize) { |
| // construct query |
| char query[QUERY_SIZE]; |
| SNPRINTF(query, QUERY_SIZE, "DELETE FROM %s WHERE key=?;", m_tableName); |
| |
| // prepare statement |
| sqlite3_stmt *stmt; |
| int retCode = sqlite3_prepare_v2(m_dbHandle, query, -1, &stmt, nullptr); |
| if (retCode == SQLITE_OK) { |
| // bind parameters and execte statement |
| sqlite3_bind_blob(stmt, 1, keyData, keyDataSize, nullptr); |
| retCode = sqlite3_step(stmt); |
| } |
| |
| sqlite3_finalize(stmt); |
| return retCode == SQLITE_DONE ? 0 : retCode; |
| } |
| |
| int SqLiteHelper::getValue(void *keyData, int keyDataSize, void *&valueData, |
| int &valueDataSize) { |
| // construct query |
| char query[QUERY_SIZE]; |
| SNPRINTF(query, QUERY_SIZE, |
| "SELECT value, length(value) AS valLength FROM %s WHERE key=?;", |
| m_tableName); |
| |
| // prepare statement |
| sqlite3_stmt *stmt; |
| int retCode = sqlite3_prepare_v2(m_dbHandle, query, -1, &stmt, nullptr); |
| if (retCode == SQLITE_OK) { |
| // bind parameters and execte statement |
| sqlite3_bind_blob(stmt, 1, keyData, keyDataSize, nullptr); |
| retCode = sqlite3_step(stmt); |
| if (retCode == SQLITE_ROW) // we will get only one row |
| { |
| void *tempBuff = const_cast<void *>(sqlite3_column_blob(stmt, 0)); |
| valueDataSize = sqlite3_column_int(stmt, 1); |
| valueData = |
| reinterpret_cast<uint8_t *>(malloc(sizeof(uint8_t) * valueDataSize)); |
| memcpy(valueData, tempBuff, valueDataSize); |
| retCode = sqlite3_step(stmt); |
| } |
| } |
| |
| sqlite3_finalize(stmt); |
| return retCode == SQLITE_DONE ? 0 : retCode; |
| } |
| |
| int SqLiteHelper::dropTable() { |
| // create query |
| char query[QUERY_SIZE]; |
| SNPRINTF(query, QUERY_SIZE, "DROP TABLE %s;", m_tableName); |
| |
| // prepare statement |
| sqlite3_stmt *stmt; |
| int retCode; |
| retCode = sqlite3_prepare_v2(m_dbHandle, query, -1, &stmt, nullptr); |
| |
| // execute statement |
| if (retCode == SQLITE_OK) retCode = sqlite3_step(stmt); |
| |
| sqlite3_finalize(stmt); |
| return retCode == SQLITE_DONE ? 0 : retCode; |
| } |
| |
| int SqLiteHelper::closeDB() { |
| int retCode = dropTable(); |
| if (retCode == SQLITE_OK) retCode = sqlite3_close(m_dbHandle); |
| |
| return retCode; |
| } |
| |
| int SqLiteHelper::executePragma(const char *pragmaName, int pragmaValue) { |
| // create query |
| char query[QUERY_SIZE]; |
| char strVal[50]; |
| SNPRINTF(strVal, 50, "%d", pragmaValue); |
| SNPRINTF(query, QUERY_SIZE, "PRAGMA %s = %s;", pragmaName, strVal); |
| |
| // prepare statement |
| sqlite3_stmt *stmt; |
| int retCode; |
| retCode = sqlite3_prepare_v2(m_dbHandle, query, -1, &stmt, nullptr); |
| |
| // execute PRAGMA |
| if (retCode == SQLITE_OK && |
| sqlite3_step(stmt) == SQLITE_ROW) { // PRAGMA command return one row |
| retCode = sqlite3_step(stmt); |
| } |
| |
| sqlite3_finalize(stmt); |
| return retCode == SQLITE_DONE ? 0 : retCode; |
| } |