-/*
- * Copyright (c) 2014 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.md.sal.dom.broker.impl;
-
-import com.google.common.base.Preconditions;
-import com.google.common.collect.ImmutableMap;
-
-import java.util.Collection;
-
-import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransaction;
-import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
-import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
-
-/**
- * Composite DOM Transaction backed by {@link DOMStoreTransaction}.
- *
- * Abstract base for composite transaction, which provides access only to common
- * functionality as retrieval of subtransaction, close method and retrieval of
- * identifier.
- *
- * @param <K>
- * Subtransaction distinguisher
- * @param <T>
- * Subtransaction type
- */
-abstract class AbstractDOMForwardedCompositeTransaction<K, T extends DOMStoreTransaction> implements
- AsyncTransaction<YangInstanceIdentifier, NormalizedNode<?, ?>> {
-
- private final ImmutableMap<K, T> backingTxs;
- private final Object identifier;
-
- /**
- *
- * Creates new composite Transactions.
- *
- * @param identifier
- * Identifier of transaction.
- * @param backingTxs
- * Key,value map of backing transactions.
- */
- protected AbstractDOMForwardedCompositeTransaction(final Object identifier, final ImmutableMap<K, T> backingTxs) {
- this.identifier = Preconditions.checkNotNull(identifier, "Identifier should not be null");
- this.backingTxs = Preconditions.checkNotNull(backingTxs, "Backing transactions should not be null");
- }
-
- /**
- * Returns subtransaction associated with supplied key.
- *
- * @param key
- * @return
- * @throws NullPointerException
- * if key is null
- * @throws IllegalArgumentException
- * if no subtransaction is associated with key.
- */
- protected final T getSubtransaction(final K key) {
- Preconditions.checkNotNull(key, "key must not be null.");
- Preconditions.checkArgument(backingTxs.containsKey(key), "No subtransaction associated with %s", key);
- return backingTxs.get(key);
- }
-
- /**
- * Returns immutable Iterable of all subtransactions.
- *
- */
- protected Collection<T> getSubtransactions() {
- return backingTxs.values();
- }
-
- @Override
- public Object getIdentifier() {
- return identifier;
- }
-
- protected void closeSubtransactions() {
- /*
- * We share one exception for all failures, which are added
- * as supressedExceptions to it.
- *
- */
- IllegalStateException failure = null;
- for (T subtransaction : backingTxs.values()) {
- try {
- subtransaction.close();
- } catch (Exception e) {
- // If we did not allocated failure we allocate it
- if(failure == null) {
- failure = new IllegalStateException("Uncaught exception occured during closing transaction.", e);
- } else {
- // We update it with addotional exceptions, which occured during error.
- failure.addSuppressed(e);
- }
- }
- }
- // If we have failure, we throw it at after all attempts to close.
- if(failure != null) {
- throw failure;
- }
- }
-}
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