Example usage for com.amazonaws.services.dynamodbv2.model ScanRequest withScanFilter

Introduction

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

Prototype

public ScanRequest withScanFilter(java.util.Map<String, Condition> scanFilter) 

Source Link

Document

This is a legacy parameter.

Usage

From source file:awslabs.lab51.SolutionCode.java

License:Open Source License

@Override
public List<Map<String, AttributeValue>> getImageItems(AmazonDynamoDBClient dynamoDbClient) {
    try {/*  w w  w  .  j  ava2s.c  om*/
        String tableName = System.getProperty("SESSIONTABLE");
        String keyPrefix = System.getProperty("PARAM3");

        ScanRequest scanRequest = new ScanRequest(tableName).withSelect("ALL_ATTRIBUTES");

        if (!keyPrefix.isEmpty()) {
            Map<String, Condition> scanFilter = new HashMap<String, Condition>();
            scanFilter.put("Key", new Condition().withAttributeValueList(new AttributeValue().withS(keyPrefix))
                    .withComparisonOperator("BEGINS_WITH"));
            scanRequest.withScanFilter(scanFilter);
        }

        return dynamoDbClient.scan(scanRequest).getItems();
    } catch (Exception ex) {
        labController.logMessageToPage("getImageItems Error: " + ex.getMessage() + ":" + ex.getStackTrace());
        return null;
    }
}

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From source file:com.intuit.tank.persistence.databases.AmazonDynamoDatabaseDocApi.java

License:Open Source License

/**
 * @{inheritDoc//from   www .  j av a 2s .  co m
 */
@SuppressWarnings("unchecked")
@Override
public PagedDatabaseResult getPagedItems(String tableName, Object nextToken, String minRange, String maxRange,
        String instanceId, String jobId) {
    List<Item> ret = new ArrayList<Item>();
    Map<String, AttributeValue> lastKeyEvaluated = (Map<String, AttributeValue>) nextToken;
    ScanRequest scanRequest = new ScanRequest().withTableName(tableName);
    Map<String, Condition> conditions = new HashMap<String, Condition>();
    if (jobId != null) {
        Condition jobIdCondition = new Condition();
        jobIdCondition.withComparisonOperator(ComparisonOperator.EQ)
                .withAttributeValueList(new AttributeValue().withS(jobId));

        conditions.put(DatabaseKeys.JOB_ID_KEY.getShortKey(), jobIdCondition);
    }
    if (StringUtils.isNotBlank(instanceId)) {
        // add a filter
        Condition filter = new Condition();
        filter.withComparisonOperator(ComparisonOperator.EQ)
                .withAttributeValueList(new AttributeValue().withS(instanceId));
        scanRequest.addScanFilterEntry(DatabaseKeys.INSTANCE_ID_KEY.getShortKey(), filter);
    }
    Condition rangeKeyCondition = new Condition();
    if (minRange != null && maxRange != null) {
        rangeKeyCondition.withComparisonOperator(ComparisonOperator.BETWEEN.toString())
                .withAttributeValueList(new AttributeValue().withS(minRange))
                .withAttributeValueList(new AttributeValue().withS(maxRange));

    } else if (minRange != null) {
        rangeKeyCondition.withComparisonOperator(ComparisonOperator.GE.toString())
                .withAttributeValueList(new AttributeValue().withS(minRange));
    } else if (maxRange != null) {
        rangeKeyCondition.withComparisonOperator(ComparisonOperator.LT.toString())
                .withAttributeValueList(new AttributeValue().withS(maxRange));
    } else {
        rangeKeyCondition = null;
    }
    if (rangeKeyCondition != null) {
        conditions.put(DatabaseKeys.REQUEST_NAME_KEY.getShortKey(), rangeKeyCondition);
    }
    scanRequest.withScanFilter(conditions);
    scanRequest.withExclusiveStartKey(lastKeyEvaluated);

    ScanResult result = dynamoDb.scan(scanRequest);
    for (Map<String, AttributeValue> item : result.getItems()) {
        ret.add(getItemFromResult(item));
    }
    return new PagedDatabaseResult(ret, result.getLastEvaluatedKey());
}

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