Example usage for com.amazonaws.services.dynamodbv2.model QueryRequest setExpressionAttributeValues

Introduction

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

Prototype

public void setExpressionAttributeValues(java.util.Map<String, AttributeValue> expressionAttributeValues) 

Source Link

Document

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

Usage

From source file:org.iternine.jeppetto.dao.dynamodb.DynamoDBQueryModelDAO.java

License:Apache License

private void applyExpressions(ConditionExpressionBuilder conditionExpressionBuilder,
        QueryRequest queryRequest) {
    Map<String, String> expressionAttributeNames;

    queryRequest.setProjectionExpression(projectionExpression);

    if (conditionExpressionBuilder.hasExpression()) {
        queryRequest.setFilterExpression(conditionExpressionBuilder.getExpression());

        if (!conditionExpressionBuilder.getExpressionAttributeValues().isEmpty()) {
            queryRequest
                    .setExpressionAttributeValues(conditionExpressionBuilder.getExpressionAttributeValues());
        }/*from w  w w.ja  va2s .c  om*/

        if (projectionExpressionNames.isEmpty()) {
            expressionAttributeNames = conditionExpressionBuilder.getExpressionAttributeNames();
        } else if (conditionExpressionBuilder.getExpressionAttributeNames().isEmpty()) {
            expressionAttributeNames = projectionExpressionNames;
        } else {
            expressionAttributeNames = new LinkedHashMap<String, String>();
            expressionAttributeNames.putAll(conditionExpressionBuilder.getExpressionAttributeNames());
            expressionAttributeNames.putAll(projectionExpressionNames);
        }
    } else {
        expressionAttributeNames = projectionExpressionNames;
    }

    if (!expressionAttributeNames.isEmpty()) {
        queryRequest.setExpressionAttributeNames(expressionAttributeNames);
    }
}

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