Examples of cern.entwined.exception.ConflictException

cern.entwined.exception.ConflictException
Exception is thrown by transactional data types at commit time when a conflict is detected. @author Ivan Koblik

        }


        // Checking for conflicts
        if (this.globallyAccessed) {
            if (!globalState.sourceMap.equals(this.sourceMap)) {
                throw new ConflictException("All the items of this map have been accessed "
                        + "this prohibits commit in the case of concurrent changes");
            }
        }
        for (K key : this.accessed) {
            checkConsistency(globalState.sourceMap, key);

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        V sourceValue = this.sourceMap.get(key);
        V globalValue = globalMap.get(key);
        if ((sourceValue != globalValue) || // <br>
                ((null == sourceValue || null == globalValue)// <br>
                && (this.sourceMap.containsKey(key) ^ globalMap.containsKey(key)))) {
            throw new ConflictException("Conflicting changes for [" + key + "]");
        }
    }

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        int sourceSize = this.sourceQueue.size();
        if (this.peekCount != 0) {
            // There were readings, check for the conflicts.
            if (globalState.globalPollCount != this.globalPollCount) {
                // We were reading from the head, and it is different the global state.
                throw new ConflictException("Queue's head was updated");
            }


            boolean pastSource = this.peekCount > sourceSize;
            if (pastSource && globalState.sourceQueue != this.sourceQueue) {
                // We read past the source queue length, into the tail, while the global state had been extended with
                // more elements on the tail. (difference of references in this case means exactly that)
                throw new ConflictException("Reading past source queue with tail concurrently updated");
            }
        }


        if (this.pollCount == 0 && tail.isEmpty()) {
            return globalState;

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        Utils.checkNull("Transactional reference", globalState);
        if (globalState.accessed) {
            throw new IllegalArgumentException("Global state must be commited before calling this method");
        }
        if (this.accessed && globalState.sourceValue != this.sourceValue) {
            throw new ConflictException("Conflicting update detected");
        }


        if (!this.updated) {
            // Return current global state if value hasn't been changed.
            return globalState;

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Related Classes of cern.entwined.exception.ConflictException

cern.entwined.TransactionalMap

cern.entwined.TransactionalQueue

cern.entwined.TransactionalRef

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