Example usage for com.amazonaws.services.dynamodbv2.model UpdateItemRequest getExpressionAttributeValues

Introduction

In this page you can find the example usage for com.amazonaws.services.dynamodbv2.model UpdateItemRequest getExpressionAttributeValues.

Prototype

public java.util.Map<String, AttributeValue> getExpressionAttributeValues() 

Source Link

Document

One or more values that can be substituted in an expression.

Usage

From source file:com.amazon.janusgraph.diskstorage.dynamodb.DynamoDbDelegate.java

License:Open Source License

/**
 * This method calculates a lower bound of the size of a new item created with UpdateItem UpdateExpression. It does not
 * account for the size of the attribute names of the document paths in the attribute names map and it assumes that the
 * UpdateExpression only uses the SET action to assign to top-level attributes.
 * @param request UpdateItem request that uses update expressions
 * @return the size of the post-update image of the item
 *//*from w  ww  .j  a v a 2 s .c  o  m*/
private int calculateExpressionBasedUpdateSize(final UpdateItemRequest request) {
    if (request == null || request.getUpdateExpression() == null) {
        throw new IllegalArgumentException("request did not use update expression");
    }
    int size = calculateItemSizeInBytes(request.getKey());
    for (AttributeValue value : request.getExpressionAttributeValues().values()) {
        size += calculateAttributeSizeInBytes(value);
    }
    return size;
}

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From source file:com.rapid7.diskstorage.dynamodb.DynamoDBDelegate.java

License:Open Source License

/**
 * This method calculates a lower bound of the size of a new item created with UpdateItem UpdateExpression. It does not
 * account for the size of the attribute names of the document paths in the attribute names map and it assumes that the
 * UpdateExpression only uses the SET action to assign to top-level attributes.
 * @param request UpdateItem request that uses update expressions
 * @return the size of the post-update image of the item
 *///from   w  w w. ja  v  a  2  s  .c  om
private int calculateExpressionBasedUpdateSize(UpdateItemRequest request) {
    if (request == null || request.getUpdateExpression() == null) {
        throw new IllegalArgumentException("request did not use update expression");
    }
    int size = calculateItemSizeInBytes(request.getKey());
    for (AttributeValue value : request.getExpressionAttributeValues().values()) {
        size += calculateAttributeSizeInBytes(value);
    }
    return size;
}

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