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

Introduction

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

Prototype

public void setFilterExpression(String filterExpression) 

Source Link

Document

A string that contains conditions that DynamoDB applies after the Query operation, but before the data is returned to you.

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//from   w ww.j  a  v a  2 s  .  co  m
                    .setExpressionAttributeValues(conditionExpressionBuilder.getExpressionAttributeValues());
        }

        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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