Bump versions 9.0.4-SNAPSHOT

[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / main / java / org / opendaylight / controller / cluster / databroker / AbstractDOMBrokerTransaction.java

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/databroker/AbstractDOMBrokerTransaction.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/databroker/AbstractDOMBrokerTransaction.java
deleted file mode 100644 (file)
index e064818..0000000
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/databroker/AbstractDOMBrokerTransaction.java
+++ /dev/null
@@ -1,135 +0,0 @@
-/*
- * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-package org.opendaylight.controller.cluster.databroker;
-
-import static com.google.common.base.Preconditions.checkArgument;
-import static java.util.Objects.requireNonNull;
-
-import com.google.common.annotations.VisibleForTesting;
-import com.google.common.base.MoreObjects;
-import com.google.common.base.MoreObjects.ToStringHelper;
-import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
-import java.lang.invoke.MethodHandles;
-import java.lang.invoke.VarHandle;
-import java.util.Map;
-import java.util.Map.Entry;
-import org.eclipse.jdt.annotation.NonNull;
-import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
-import org.opendaylight.mdsal.common.api.TransactionDatastoreMismatchException;
-import org.opendaylight.mdsal.dom.api.DOMDataTreeTransaction;
-import org.opendaylight.mdsal.dom.spi.store.DOMStoreTransaction;
-import org.opendaylight.mdsal.dom.spi.store.DOMStoreTransactionFactory;
-
-public abstract class AbstractDOMBrokerTransaction<T extends DOMStoreTransaction> implements DOMDataTreeTransaction {
-
-    private static final VarHandle BACKING_TX;
-
-    static {
-        try {
-            BACKING_TX = MethodHandles.lookup()
-                .findVarHandle(AbstractDOMBrokerTransaction.class, "backingTx", Entry.class);
-        } catch (NoSuchFieldException | IllegalAccessException e) {
-            throw new ExceptionInInitializerError(e);
-        }
-    }
-
-    private final @NonNull Object identifier;
-    private final Map<LogicalDatastoreType, ? extends DOMStoreTransactionFactory> storeTxFactories;
-
-    @SuppressFBWarnings(value = "UWF_UNWRITTEN_FIELD",
-        justification = "https://github.com/spotbugs/spotbugs/issues/2749")
-    private volatile Entry<LogicalDatastoreType, T> backingTx;
-
-    /**
-     * Creates new transaction.
-     *
-     * @param identifier Identifier of transaction.
-     */
-    protected AbstractDOMBrokerTransaction(final Object identifier,
-            final Map<LogicalDatastoreType, ? extends DOMStoreTransactionFactory> storeTxFactories) {
-        this.identifier = requireNonNull(identifier, "Identifier should not be null");
-        this.storeTxFactories = requireNonNull(storeTxFactories, "Store Transaction Factories should not be null");
-        checkArgument(!storeTxFactories.isEmpty(), "Store Transaction Factories should not be empty");
-    }
-
-    /**
-     * Returns sub-transaction associated with supplied key.
-     *
-     * @param datastoreType the data store type
-     * @return the sub-transaction
-     * @throws NullPointerException                  if datastoreType is null
-     * @throws IllegalArgumentException              if no sub-transaction is associated with datastoreType.
-     * @throws TransactionDatastoreMismatchException if datastoreType mismatches the one used at first access
-     */
-    protected final T getSubtransaction(final LogicalDatastoreType datastoreType) {
-        requireNonNull(datastoreType, "datastoreType must not be null.");
-
-        var entry = backingTx;
-        if (entry == null) {
-            if (!storeTxFactories.containsKey(datastoreType)) {
-                throw new IllegalArgumentException(datastoreType + " is not supported");
-            }
-            final var tx = createTransaction(datastoreType);
-            final var newEntry = Map.entry(datastoreType, tx);
-            final var witness = (Entry<LogicalDatastoreType, T>) BACKING_TX.compareAndExchange(this, null, newEntry);
-            if (witness != null) {
-                tx.close();
-                entry = witness;
-            } else {
-                entry = newEntry;
-            }
-        }
-
-        final var expected = entry.getKey();
-        if (expected != datastoreType) {
-            throw new TransactionDatastoreMismatchException(expected, datastoreType);
-        }
-        return entry.getValue();
-    }
-
-    /**
-     * Returns sub-transaction if initialized.
-     */
-    @VisibleForTesting
-    protected T getSubtransaction() {
-        final Entry<LogicalDatastoreType, T> entry;
-        return (entry = backingTx) == null ? null : entry.getValue();
-    }
-
-    protected abstract T createTransaction(LogicalDatastoreType datastoreType);
-
-    @Override
-    public Object getIdentifier() {
-        return identifier;
-    }
-
-    @SuppressWarnings("checkstyle:IllegalCatch")
-    protected void closeSubtransaction() {
-        final var local = backingTx;
-        if (local != null) {
-            try {
-                local.getValue().close();
-            } catch (Exception e) {
-                throw new IllegalStateException("Uncaught exception occurred during closing transaction", e);
-            }
-        }
-    }
-
-    protected DOMStoreTransactionFactory getTxFactory(final LogicalDatastoreType type) {
-        return storeTxFactories.get(type);
-    }
-
-    @Override
-    public final String toString() {
-        return addToStringAttributes(MoreObjects.toStringHelper(this).omitNullValues()).toString();
-    }
-
-    protected ToStringHelper addToStringAttributes(final ToStringHelper toStringHelper) {
-        return toStringHelper.add("identifier", identifier);
-    }
-}