/**
* Decorates the given <code>updateItemRequest</code> with attributes required for geo spatial
* querying.
*
* @param attributeValueMap the items that needs to be decorated with geo attributes
* @param latitude the latitude that needs to be attached with the item
* @param longitude the longitude that needs to be attached with the item
* @param configs the collection of configurations to be used for decorating the request with geo
* attributes
*/
public void updateAttributeValues(
Map<String, AttributeValue> attributeValueMap,
double latitude,
double longitude,
List<GeoConfig> configs) {
if (configs == null) {
throw new IllegalArgumentException("Geo configs should not be null");
}
for (GeoConfig config : configs) {
// Fail-fast if any of the preconditions fail
checkConfigParams(
config.getGeoIndexName(),
config.getGeoHashKeyColumn(),
config.getGeoHashColumn(),
config.getGeoHashKeyLength());
long geohash = s2Manager.generateGeohash(latitude, longitude);
long geoHashKey = s2Manager.generateHashKey(geohash, config.getGeoHashKeyLength());
// Decorate the request with the geohash
AttributeValue geoHashValue = new AttributeValue().withN(Long.toString(geohash));
attributeValueMap.put(config.getGeoHashColumn(), geoHashValue);
AttributeValue geoHashKeyValue;
if (config.getHashKeyDecorator().isPresent()
&& config.getCompositeHashKeyColumn().isPresent()) {
AttributeValue compositeHashKeyValue =
attributeValueMap.get(config.getCompositeHashKeyColumn().get());
if (compositeHashKeyValue == null) {
continue;
}
String compositeColumnValue = compositeHashKeyValue.getS();
String hashKey =
config.getHashKeyDecorator().get().decorate(compositeColumnValue, geoHashKey);
// Decorate the request with the composite geoHashKey (type String)
geoHashKeyValue = new AttributeValue().withS(String.valueOf(hashKey));
} else {
// Decorate the request with the geoHashKey (type Number)
geoHashKeyValue = new AttributeValue().withN(String.valueOf(geoHashKey));
}
attributeValueMap.put(config.getGeoHashKeyColumn(), geoHashKeyValue);
}
}
public Request<BatchGetItemRequest> marshall(BatchGetItemRequest batchGetItemRequest) {
if (batchGetItemRequest == null) {
throw new AmazonClientException("Invalid argument passed to marshall(...)");
}
Request<BatchGetItemRequest> request =
new DefaultRequest<BatchGetItemRequest>(batchGetItemRequest, "AmazonDynamoDB");
String target = "DynamoDB_20111205.BatchGetItem";
request.addHeader("X-Amz-Target", target);
request.addHeader("Content-Type", "application/x-amz-json-1.0");
request.setHttpMethod(HttpMethodName.POST);
String uriResourcePath = "";
uriResourcePath = uriResourcePath.replaceAll("//", "/");
if (uriResourcePath.contains("?")) {
String queryString = uriResourcePath.substring(uriResourcePath.indexOf("?") + 1);
uriResourcePath = uriResourcePath.substring(0, uriResourcePath.indexOf("?"));
for (String s : queryString.split("[;&]")) {
String[] nameValuePair = s.split("=");
if (nameValuePair.length == 2) {
request.addParameter(nameValuePair[0], nameValuePair[1]);
} else {
request.addParameter(s, null);
}
}
}
request.setResourcePath(uriResourcePath);
try {
StringWriter stringWriter = new StringWriter();
JSONWriter jsonWriter = new JSONWriter(stringWriter);
jsonWriter.object();
if (batchGetItemRequest.getRequestItems() != null) {
jsonWriter.key("RequestItems");
jsonWriter.object();
for (Map.Entry<String, KeysAndAttributes> requestItemsListValue :
batchGetItemRequest.getRequestItems().entrySet()) {
if (requestItemsListValue.getValue() != null) {
jsonWriter.key(requestItemsListValue.getKey());
jsonWriter.object();
java.util.List<Key> keysList = requestItemsListValue.getValue().getKeys();
if (keysList != null && keysList.size() > 0) {
jsonWriter.key("Keys");
jsonWriter.array();
for (Key keysListValue : keysList) {
if (keysListValue != null) {
jsonWriter.object();
AttributeValue hashKeyElement = keysListValue.getHashKeyElement();
if (hashKeyElement != null) {
jsonWriter.key("HashKeyElement");
jsonWriter.object();
if (hashKeyElement.getS() != null) {
jsonWriter.key("S").value(hashKeyElement.getS());
}
if (hashKeyElement.getN() != null) {
jsonWriter.key("N").value(hashKeyElement.getN());
}
if (hashKeyElement.getB() != null) {
jsonWriter.key("B").value(hashKeyElement.getB());
}
java.util.List<String> sSList = hashKeyElement.getSS();
if (sSList != null && sSList.size() > 0) {
jsonWriter.key("SS");
jsonWriter.array();
for (String sSListValue : sSList) {
if (sSListValue != null) {
jsonWriter.value(sSListValue);
}
}
jsonWriter.endArray();
}
java.util.List<String> nSList = hashKeyElement.getNS();
if (nSList != null && nSList.size() > 0) {
jsonWriter.key("NS");
jsonWriter.array();
for (String nSListValue : nSList) {
if (nSListValue != null) {
jsonWriter.value(nSListValue);
}
}
jsonWriter.endArray();
}
java.util.List<java.nio.ByteBuffer> bSList = hashKeyElement.getBS();
if (bSList != null && bSList.size() > 0) {
jsonWriter.key("BS");
jsonWriter.array();
for (java.nio.ByteBuffer bSListValue : bSList) {
if (bSListValue != null) {
jsonWriter.value(bSListValue);
}
}
jsonWriter.endArray();
}
jsonWriter.endObject();
}
AttributeValue rangeKeyElement = keysListValue.getRangeKeyElement();
if (rangeKeyElement != null) {
jsonWriter.key("RangeKeyElement");
jsonWriter.object();
if (rangeKeyElement.getS() != null) {
jsonWriter.key("S").value(rangeKeyElement.getS());
}
if (rangeKeyElement.getN() != null) {
jsonWriter.key("N").value(rangeKeyElement.getN());
}
if (rangeKeyElement.getB() != null) {
jsonWriter.key("B").value(rangeKeyElement.getB());
}
java.util.List<String> sSList = rangeKeyElement.getSS();
if (sSList != null && sSList.size() > 0) {
jsonWriter.key("SS");
jsonWriter.array();
for (String sSListValue : sSList) {
if (sSListValue != null) {
jsonWriter.value(sSListValue);
}
}
jsonWriter.endArray();
}
java.util.List<String> nSList = rangeKeyElement.getNS();
if (nSList != null && nSList.size() > 0) {
jsonWriter.key("NS");
jsonWriter.array();
for (String nSListValue : nSList) {
if (nSListValue != null) {
jsonWriter.value(nSListValue);
}
}
jsonWriter.endArray();
}
java.util.List<java.nio.ByteBuffer> bSList = rangeKeyElement.getBS();
if (bSList != null && bSList.size() > 0) {
jsonWriter.key("BS");
jsonWriter.array();
for (java.nio.ByteBuffer bSListValue : bSList) {
if (bSListValue != null) {
jsonWriter.value(bSListValue);
}
}
jsonWriter.endArray();
}
jsonWriter.endObject();
}
jsonWriter.endObject();
}
}
jsonWriter.endArray();
}
java.util.List<String> attributesToGetList =
requestItemsListValue.getValue().getAttributesToGet();
if (attributesToGetList != null && attributesToGetList.size() > 0) {
jsonWriter.key("AttributesToGet");
jsonWriter.array();
for (String attributesToGetListValue : attributesToGetList) {
if (attributesToGetListValue != null) {
jsonWriter.value(attributesToGetListValue);
}
}
jsonWriter.endArray();
}
if (requestItemsListValue.getValue().isConsistentRead() != null) {
jsonWriter
.key("ConsistentRead")
.value(requestItemsListValue.getValue().isConsistentRead());
}
jsonWriter.endObject();
}
}
jsonWriter.endObject();
}
jsonWriter.endObject();
String snippet = stringWriter.toString();
byte[] content = snippet.getBytes("UTF-8");
request.setContent(new StringInputStream(snippet));
request.addHeader("Content-Length", Integer.toString(content.length));
} catch (Throwable t) {
throw new AmazonClientException("Unable to marshall request to JSON: " + t.getMessage(), t);
}
return request;
}
