public static void main(String[] args) {
AmazonDynamoDBClient client = new AmazonDynamoDBClient();
client.setEndpoint("http://localhost:8000");
DynamoDB dynamoDB = new DynamoDB(client);
Table table = dynamoDB.getTable("Movies");
HashMap<String, String> nameMap = new HashMap<String, String>();
nameMap.put("#yr", "year");
HashMap<String, Object> valueMap = new HashMap<String, Object>();
valueMap.put(":yyyy", 1985);
QuerySpec querySpec =
new QuerySpec()
.withKeyConditionExpression("#yr = :yyyy")
.withNameMap(new NameMap().with("#yr", "year"))
.withValueMap(valueMap);
ItemCollection<QueryOutcome> items = table.query(querySpec);
Iterator<Item> iterator = items.iterator();
Item item = null;
System.out.println("Movies from 1985");
while (iterator.hasNext()) {
item = iterator.next();
System.out.println(item.getNumber("year") + ": " + item.getString("title"));
}
valueMap.put(":yyyy", 1992);
valueMap.put(":letter1", "A");
valueMap.put(":letter2", "L");
querySpec
.withProjectionExpression("#yr, title, info.genres, info.actors[0]")
.withKeyConditionExpression("#yr = :yyyy and title between :letter1 and :letter2")
.withNameMap(nameMap)
.withValueMap(valueMap);
items = table.query(querySpec);
iterator = items.iterator();
System.out.println("Movies from 1992 - titles A-L, with genres and lead actor");
while (iterator.hasNext()) {
item = iterator.next();
System.out.println(item.toString());
}
}
