Example usage for com.amazonaws.services.dynamodbv2.xspec ExpressionSpecBuilder ExpressionSpecBuilder

Introduction

In this page you can find the example usage for com.amazonaws.services.dynamodbv2.xspec ExpressionSpecBuilder ExpressionSpecBuilder.

Prototype

public ExpressionSpecBuilder() 

Source Link

Document

Constructs a request-centric Expression Specification Builder that can be used to construct valid expressions, and the respective name maps and value maps, for various DynamoDB requests in a typeful manner.

Usage

From source file:com.github.fge.jsonpatch.JsonPatch.java

License:LGPL

/**
 * Converts this JsonPatch into an ExpressionSpecBuilder
 * @return an expression spec builder that contains the updates contained in this
 * patch/*from   ww w  . ja va2 s  . c o  m*/
 */
public ExpressionSpecBuilder get() {
    ExpressionSpecBuilder builder = new ExpressionSpecBuilder();
    for (JsonPatchOperation operation : operations) {
        operation.applyToBuilder(builder);
    }
    return builder;
}

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From source file:jp.classmethod.aws.dynamodb.DynamoDbRepository.java

License:Open Source License

@Override
public <S extends E> S update(S domain, VersionCondition condition) {
    Preconditions.checkNotNull(domain, "domain must not be null");
    final Item domainItem = convertDomainToItem(domain);
    Preconditions.checkArgument(domainItem.hasAttribute(hashKeyName),
            "hash key must be set in domain object when updating: " + hashKeyName);

    ExpressionSpecBuilder builder = new ExpressionSpecBuilder();
    builder.withCondition(ExpressionSpecBuilder.S(hashKeyName).exists());
    if (condition != null) {
        Preconditions.checkState(versionProperty != null);
        builder.withCondition(ExpressionSpecBuilder.N(versionProperty).eq(condition.getVersion()));
    }/*from  w w w  .  ja  v  a2s.c  o  m*/
    PutItemExpressionSpec xSpec = builder.buildForPut();
    PutItemSpec spec = new PutItemSpec().withItem(domainItem).withExpressionSpec(xSpec);
    try {
        table.putItem(spec);
    } catch (AmazonClientException e) {
        throw processUpdateItemException(getId(domain), e);
    }
    // PutItem does not accept ReturnValue.ALL_NEW
    return domain;
}

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