Example usage for com.amazonaws.services.dynamodbv2.datamodeling DynamoDBMapper load

Introduction

In this page you can find the example usage for com.amazonaws.services.dynamodbv2.datamodeling DynamoDBMapper load.

Prototype

@Override
    public <T> T load(Class<T> clazz, Object hashKey, DynamoDBMapperConfig config) 

Source Link

Usage

From source file:org.apache.gora.dynamodb.store.DynamoDBNativeStore.java

License:Apache License

@Override
/**// ww  w  .j a va2  s  .  c  o m
 * Gets the object with the specific key
 * @throws IOException
 */
public T get(K key) throws GoraException {
    T object = null;
    try {
        Object rangeKey;
        rangeKey = getRangeKeyFromKey(key);
        Object hashKey = getHashFromKey(key);
        if (hashKey != null) {
            DynamoDBMapper mapper = new DynamoDBMapper(dynamoDBStoreHandler.getDynamoDbClient());
            if (rangeKey != null)
                object = mapper.load(persistentClass, hashKey, rangeKey);
            else
                object = mapper.load(persistentClass, hashKey);
            return object;

        } else {
            throw new GoraException("Error while retrieving keys from object: " + key.toString());
        }
    } catch (GoraException e) {
        throw e;
    } catch (Exception e) {
        throw new GoraException(e);
    }
}

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From source file:org.apache.gora.dynamodb.store.DynamoDBNativeStore.java

License:Apache License

/**
 * Puts an object identified by a key//  w  ww . j  ava 2s  . co  m
 *
 * @param key
 * @param obj
 */
@Override
public void put(K key, T obj) throws GoraException {
    try {
        Object hashKey = getHashKey(key, obj);
        Object rangeKey = getRangeKey(key, obj);
        if (hashKey != null) {
            DynamoDBMapper mapper = new DynamoDBMapper(dynamoDBStoreHandler.getDynamoDbClient());
            if (rangeKey != null) {
                mapper.load(persistentClass, hashKey, rangeKey);
            } else {
                mapper.load(persistentClass, hashKey);
            }
            mapper.save(obj);
        } else
            throw new GoraException("No HashKey found in Key nor in Object.");
    } catch (Exception e) {
        throw new GoraException(e);
    }
}

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