Example usage for org.eclipse.jgit.lib Ref getStorage

Introduction

In this page you can find the example usage for org.eclipse.jgit.lib Ref getStorage.

Prototype

@NonNull
Storage getStorage();

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How was this ref obtained?

Usage

From source file:com.benhumphreys.jgitcassandra.repo.CassandraRefDatabase.java

License:Apache License

/**
 * Compare a reference, and put if it matches.
 *
 * @param oldRef old value to compare to. If the reference is expected
 *               to not exist the old value has a storage of
 *               Ref.Storage.NEW and an ObjectId value of null.
 * @param newRef new reference to store.
 * @return true if the put was successful; false otherwise.
 * @throws IOException the reference cannot be put due to a system error.
 *//*from   ww w.  j a v a2s  .c om*/
@Override
protected boolean compareAndPut(Ref oldRef, Ref newRef) throws IOException {
    String name = newRef.getName();
    if (oldRef == null || oldRef.getStorage() == Ref.Storage.NEW)
        return refs.putIfAbsent(name, newRef) == null;
    Ref cur = refs.get(name);
    if (cur != null && Utils.refsHaveEqualObjectId(cur, oldRef)) {
        return refs.replace(name, cur, newRef);
    } else {
        return false;
    }
}

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From source file:org.chodavarapu.jgitaws.repositories.RefRepository.java

License:Eclipse Distribution License

public Observable<Boolean> compareAndPut(String repositoryName, Ref oldRef, Ref newRef) {
    boolean isSymbolic = newRef.isSymbolic();
    boolean isPeeled = newRef.isPeeled();
    String target = newRef.isSymbolic() ? newRef.getTarget().getName() : newRef.getObjectId().name();

    logger.debug("Saving ref {} -> {} in repository {}", newRef.getName(), target, repositoryName);

    UpdateItemSpec updateSpec = new UpdateItemSpec()
            .withPrimaryKey(new PrimaryKey(new KeyAttribute(REPOSITORY_NAME_ATTRIBUTE, repositoryName),
                    new KeyAttribute(NAME_ATTRIBUTE, newRef.getName())));

    StringBuilder updateExpression = new StringBuilder(COMPARE_AND_PUT_EXPRESSION);
    ValueMap valueMap = new ValueMap().withString(":target", target).withBoolean(":isSymbolic", isSymbolic)
            .withBoolean(":isPeeled", isPeeled);

    if (isPeeled && newRef.getPeeledObjectId() != null) {
        updateExpression.append(", ");
        updateExpression.append(PEELED_TARGET_ATTRIBUTE);
        updateExpression.append(" = :peeledTarget");
        valueMap = valueMap.withString(":peeledTarget", newRef.getPeeledObjectId().name());
    }/*w w  w. j  av  a2s .c o m*/

    if (oldRef != null && oldRef.getStorage() != Ref.Storage.NEW) {
        String expected = oldRef.isSymbolic() ? oldRef.getTarget().getName() : oldRef.getObjectId().name();
        updateSpec = updateSpec.withConditionExpression("#target = :expected")
                .withNameMap(new NameMap().with("#target", TARGET_ATTRIBUTE));
        valueMap = valueMap.withString(":expected", expected);
    }

    updateSpec = updateSpec.withUpdateExpression(updateExpression.toString()).withValueMap(valueMap);

    return configuration.getDynamoClient()
            .updateItem(configuration.getRefsTableName(), updateSpec, tableCreator).map(v -> true)
            .doOnNext(v -> logger.debug("Saved ref {} in repository {}", newRef.getName(), repositoryName))
            .onErrorReturn(t -> false);
}

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