async database statement queue

[mobile-ledger.git] / app / src / main / java / net / ktnx / mobileledger / async / DbOpQueue.java

diff --git a/app/src/main/java/net/ktnx/mobileledger/async/DbOpQueue.java b/app/src/main/java/net/ktnx/mobileledger/async/DbOpQueue.java
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+++ b/app/src/main/java/net/ktnx/mobileledger/async/DbOpQueue.java
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+/*
+ * Copyright © 2019 Damyan Ivanov.
+ * This file is part of MoLe.
+ * MoLe is free software: you can distribute it and/or modify it
+ * under the term of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your opinion), any later version.
+ *
+ * MoLe 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 General Public License terms for details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package net.ktnx.mobileledger.async;
+
+import android.util.Log;
+
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.LinkedBlockingQueue;
+
+public class DbOpQueue {
+    static private final BlockingQueue<DbOpItem> queue = new LinkedBlockingQueue<>();
+    static private DbOpRunner runner;
+    synchronized static public void init() {
+        if (runner != null) return;
+        Log.d("opQueue", "Starting runner thread");
+        runner = new DbOpRunner(queue);
+        runner.start();
+    }
+    static public void done() {
+        runner.interrupt();
+    }
+    public static void add(String sql, Object[] params) {
+        init();
+        Log.d("opQueue", "Adding " + sql);
+        queue.add(new DbOpItem(sql, params));
+    }
+    static void add(String sql) {
+        queue.add(new DbOpItem(sql));
+    }
+}