[LIB-13] Add common scanner functional

[chesshog-scanner.git] / src / main / java / org / hedgecode / chess / scanner / ChessHogScanner.java

diff --git a/src/main/java/org/hedgecode/chess/scanner/ChessHogScanner.java b/src/main/java/org/hedgecode/chess/scanner/ChessHogScanner.java
new file mode 100644 (file)
index 0000000..45a8064
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+++ b/src/main/java/org/hedgecode/chess/scanner/ChessHogScanner.java
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2019-2020. Developed by Hedgecode.
+ *
+ * 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.
+ */
+
+package org.hedgecode.chess.scanner;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * ChessHogScanner
+ *
+ * @author Dmitry Samoshin aka gotty
+ */
+public final class ChessHogScanner {
+
+    private static ChessHogScanner _instance;
+
+    private final Map<ScannerType, Scanner> SCANNERS = new HashMap<ScannerType, Scanner>();
+
+    public static Scanner get(ScannerType type) {
+        return getInstance().scanner(type);
+    }
+
+    private void init() {
+        try {
+            for (Scanner scanner : SCANNERS.values()) {
+                if (scanner instanceof Initiable) {
+                    Initiable initiableScanner = (Initiable) scanner;
+                    initiableScanner.init();
+                }
+            }
+        } catch (ChessHogScannerException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    private Scanner scanner(ScannerType type) {
+        return SCANNERS.get(type);
+    }
+
+    private ChessHogScanner() {
+    }
+
+    private static ChessHogScanner getInstance() {
+        if (_instance == null) {
+            _instance = new ChessHogScanner();
+            _instance.init();
+        }
+        return _instance;
+    }
+
+}