Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.procore / src / fi / vtt / simantics / procore / internal / ClusterChange2.java

diff --git a/bundles/org.simantics.db.procore/src/fi/vtt/simantics/procore/internal/ClusterChange2.java b/bundles/org.simantics.db.procore/src/fi/vtt/simantics/procore/internal/ClusterChange2.java
new file mode 100644 (file)
index 0000000..acbb5c7
--- /dev/null
+++ b/bundles/org.simantics.db.procore/src/fi/vtt/simantics/procore/internal/ClusterChange2.java
@@ -0,0 +1,74 @@
+package fi.vtt.simantics.procore.internal;\r
+\r
+import java.util.Arrays;\r
+\r
+import org.simantics.db.procore.cluster.ClusterImpl;\r
+import org.simantics.db.service.Bytes;\r
+import org.simantics.db.service.ClusterUID;\r
+\r
+class ClusterChange2 {\r
+    public static final int VERSION = 2;\r
+    public static final byte SET_IMMUTABLE_OPERATION = 1; // <byte : 0 = false>\r
+    public static final byte UNDO_VALUE_OPERATION = 2; // <int : resource index>\r
+    public static final byte SET_DELETED_OPERATION = 3; // <byte : 0 = false>\r
+    private static final int INCREMENT = 1<<10;\r
+    private boolean dirty = false;\r
+    private byte[] bytes;\r
+    private int byteIndex;\r
+    private ClusterUID clusterUID;\r
+    ClusterChange2(ClusterUID clusterUID, ClusterImpl cluster) {\r
+        this.clusterUID = clusterUID;\r
+        init();\r
+    }\r
+    void init() {\r
+//        System.err.println("clusterChange2 dirty " + cluster.clusterId);\r
+        dirty = false;\r
+        bytes = new byte[INCREMENT];\r
+        byteIndex = 0;\r
+        addInt(0); // Size of byte vector. Set by flush.\r
+        addInt(VERSION);\r
+        byteIndex = clusterUID.toByte(bytes, 8);\r
+    }\r
+    boolean isDirty() {\r
+        return dirty;\r
+    }\r
+    void flush(GraphSession graphSession) {\r
+//        System.err.println("flush2 clusterChange2 " + dirty + this);\r
+        if (!dirty)\r
+            return;\r
+        Bytes.writeLE(bytes, 0, byteIndex - 4);\r
+        byte[] ops = Arrays.copyOf(bytes, byteIndex);\r
+//        System.err.println("flush2 clusterChange2 " + cluster.clusterId + " " + ops.length + " bytes.");\r
+        graphSession.updateCluster(new UpdateClusterFunction(ops));\r
+        init();\r
+    }\r
+    void setImmutable(boolean immutable) {\r
+        dirty = true;\r
+        addByte(SET_IMMUTABLE_OPERATION);\r
+        addByte((byte)(immutable ? -1 : 0));\r
+    }\r
+    void setDeleted(boolean deleted) {\r
+        dirty = true;\r
+        addByte(SET_DELETED_OPERATION);\r
+        addByte((byte)(deleted ? -1 : 0));\r
+    }\r
+    void undoValueEx(int resourceIndex) {\r
+        dirty = true;\r
+        addByte(UNDO_VALUE_OPERATION);\r
+        addInt(resourceIndex);\r
+    }\r
+    private final void checkSpace(int len) {\r
+        if (bytes.length - byteIndex > len)\r
+            return;\r
+       bytes = Arrays.copyOf(bytes, bytes.length + len + INCREMENT);\r
+    }\r
+    private final void addByte(byte value) {\r
+        checkSpace(1);\r
+        bytes[byteIndex++] = value;\r
+    }\r
+    private final void addInt(int value) {\r
+        checkSpace(4);\r
+        Bytes.writeLE(bytes, byteIndex, value);\r
+        byteIndex += 4;\r
+    }\r
+}\r