1 files changed, 0 insertions, 274 deletions

diff --git a/store/database.cpp b/store/database.cpp
deleted file mode 100644
index c4dfbd6..0000000
--- a/store/database.cpp
+++ /dev/null
@@ -1,274 +0,0 @@
-#include "database.h"
-
-#include <iostream>
-
-#include <QAtomicInt>
-#include <QDebug>
-#include <QDir>
-#include <QReadWriteLock>
-#include <QString>
-#include <QTime>
-
-#include <lmdb.h>
-
-class Database::Private
-{
-public:
-    Private(const QString &s, const QString &name);
-    ~Private();
-
-    QString storageRoot;
-    QString name;
-    MDB_dbi dbi;
-    MDB_env *env;
-    MDB_txn *transaction;
-    bool readTransaction;
-    bool firstOpen;
-};
-
-Database::Private::Private(const QString &s, const QString &n)
-    : transaction(0),
-      readTransaction(false),
-      firstOpen(true),
-      storageRoot(s),
-      name(n)
-{
-    QDir dir;
-    dir.mkdir(storageRoot);
-
-    //create file
-    if (mdb_env_create(&env)) {
-        // TODO: handle error
-    } else {
-        int rc = mdb_env_open(env, storageRoot.toStdString().data(), 0, 0664);
-
-        if (rc) {
-            std::cerr << "mdb_env_open: " << rc << " " << mdb_strerror(rc) << std::endl;
-            mdb_env_close(env);
-            env = 0;
-        } else {
-            const size_t dbSize = 10485760 * 100; //10MB * 100
-            mdb_env_set_mapsize(env, dbSize);
-        }
-    }
-}
-
-Database::Private::~Private()
-{
-    if (transaction) {
-        mdb_txn_abort(transaction);
-    }
-
-    // it is still there and still unused, so we can shut it down
-    mdb_dbi_close(env, dbi);
-    mdb_env_close(env);
-}
-
-Database::Database(const QString &storageRoot, const QString &name)
-    : d(new Private(storageRoot, name))
-{
-}
-
-Database::~Database()
-{
-    delete d;
-}
-
-bool Database::isInTransaction() const
-{
-    return d->transaction;
-}
-
-bool Database::startTransaction(TransactionType type)
-{
-    if (!d->env) {
-        return false;
-    }
-
-    bool requestedRead = type == ReadOnly;
-    if (d->transaction && (!d->readTransaction || requestedRead)) {
-        return true;
-    }
-
-    if (d->transaction) {
-        // we are about to turn a read transaction into a writable one
-        abortTransaction();
-    }
-
-    if (d->firstOpen && requestedRead) {
-        //A write transaction is at least required the first time
-        mdb_txn_begin(d->env, nullptr, 0, &d->transaction);
-        //Open the database
-        //With this we could open multiple named databases if we wanted to
-        mdb_dbi_open(d->transaction, nullptr, 0, &d->dbi);
-        mdb_txn_abort(d->transaction);
-    }
-
-    int rc;
-    rc = mdb_txn_begin(d->env, NULL, requestedRead ? MDB_RDONLY : 0, &d->transaction);
-    if (!rc) {
-        rc = mdb_dbi_open(d->transaction, NULL, 0, &d->dbi);
-    }
-
-    d->firstOpen = false;
-    return !rc;
-}
-
-bool Database::commitTransaction()
-{
-    if (!d->env) {
-        return false;
-    }
-
-    if (!d->transaction) {
-        return false;
-    }
-
-    int rc;
-    rc = mdb_txn_commit(d->transaction);
-    d->transaction = 0;
-
-    if (rc) {
-        std::cerr << "mdb_txn_commit: " << rc << " " << mdb_strerror(rc) << std::endl;
-    }
-
-    return !rc;
-}
-
-void Database::abortTransaction()
-{
-    if (!d->env || !d->transaction) {
-        return;
-    }
-
-    mdb_txn_abort(d->transaction);
-    d->transaction = 0;
-}
-
-bool Database::write(const char *key, size_t keySize, const char *value, size_t valueSize)
-{
-    write(std::string(key, keySize), std::string(value, valueSize));
-}
-
-bool Database::write(const std::string &sKey, const std::string &sValue)
-{
-    if (!d->env) {
-        return false;
-    }
-
-    const bool implicitTransaction = !d->transaction || d->readTransaction;
-    if (implicitTransaction) {
-        // TODO: if this fails, still try the write below?
-        if (!startTransaction()) {
-            return false;
-        }
-    }
-
-    int rc;
-    MDB_val key, data;
-    key.mv_size = sKey.size();
-    key.mv_data = (void*)sKey.data();
-    data.mv_size = sValue.size();
-    data.mv_data = (void*)sValue.data();
-    rc = mdb_put(d->transaction, d->dbi, &key, &data, 0);
-
-    if (rc) {
-        std::cerr << "mdb_put: " << rc << " " << mdb_strerror(rc) << std::endl;
-    }
-
-    if (implicitTransaction) {
-        if (rc) {
-            abortTransaction();
-        } else {
-            rc = commitTransaction();
-        }
-    }
-
-    return !rc;
-}
-
-bool Database::read(const std::string &sKey, const std::function<void(const std::string &value)> &resultHandler)
-{
-    return read(sKey,
-         [&](void *ptr, int size) {
-            const std::string resultValue(static_cast<char*>(ptr), size);
-            resultHandler(resultValue);
-         });
-// std::cout << "key: " << resultKey << " data: " << resultValue << std::endl;
-}
-
-bool Database::read(const std::string &sKey, const std::function<void(void *ptr, int size)> &resultHandler)
-{
-    if (!d->env) {
-        return false;
-    }
-
-    int rc;
-    MDB_val key;
-    MDB_val data;
-    MDB_cursor *cursor;
-
-    key.mv_size = sKey.size();
-    key.mv_data = (void*)sKey.data();
-
-    const bool implicitTransaction = !d->transaction;
-    if (implicitTransaction) {
-        // TODO: if this fails, still try the write below?
-        if (!startTransaction(ReadOnly)) {
-            return false;
-        }
-    }
-
-    rc = mdb_cursor_open(d->transaction, d->dbi, &cursor);
-    if (rc) {
-        std::cerr << "mdb_cursor_get: " << rc << " " << mdb_strerror(rc) << std::endl;
-        return false;
-    }
-
-    if (sKey.empty()) {
-        std::cout << "Iterating over all values of store!" << std::endl;
-        rc = mdb_cursor_get(cursor, &key, &data, MDB_FIRST);
-        while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) {
-            resultHandler(key.mv_data, data.mv_size);
-        }
-
-        //We never find the last value
-        if (rc == MDB_NOTFOUND) {
-            rc = 0;
-        }
-    } else {
-        if ((rc = mdb_cursor_get(cursor, &key, &data, MDB_SET)) == 0) {
-            resultHandler(data.mv_data, data.mv_size);
-        } else {
-            std::cout << "couldn't find value " << sKey << " " << std::endl;
-        }
-    }
-
-    if (rc) {
-        std::cerr << "mdb_cursor_get: " << rc << " " << mdb_strerror(rc) << std::endl;
-        return false;
-    }
-
-    mdb_cursor_close(cursor);
-
-    /**
-      we don't abort the transaction since we need it for reading the values
-    if (implicitTransaction) {
-        abortTransaction();
-    }
-    */
-    return true;
-}
-
-qint64 Database::diskUsage() const
-{
-    QFileInfo info(d->storageRoot + "/data.mdb");
-    return info.size();
-}
-
-void Database::removeFromDisk() const
-{
-    QDir dir(d->storageRoot);
-    dir.remove("data.mdb");
-    dir.remove("lock.mdb");
-}