Example usage for com.amazonaws.services.dynamodbv2.xspec ExpressionSpecBuilder addUpdate

Introduction

In this page you can find the example usage for com.amazonaws.services.dynamodbv2.xspec ExpressionSpecBuilder addUpdate.

Prototype

public ExpressionSpecBuilder addUpdate(UpdateAction updateAction) 

Source Link

Document

Fluent API to add the given Update expression for a request.

Usage

From source file:com.github.fge.jsonpatch.CopyOperation.java

License:LGPL

@Override
public void applyToBuilder(ExpressionSpecBuilder builder) {
    String copyPath = pathGenerator.apply(from);
    String setPath = pathGenerator.apply(path);
    //set the attribute in the path location
    builder.addUpdate(new PathSetAction(ExpressionSpecBuilder.attribute(setPath),
            ExpressionSpecBuilder.attribute(copyPath)));
}

---

From source file:com.github.fge.jsonpatch.MoveOperation.java

License:LGPL

@Override
public void applyToBuilder(ExpressionSpecBuilder builder) {
    String removePath = pathGenerator.apply(from);
    String setPath = pathGenerator.apply(path);
    //remove the attribute in the from location
    builder.addUpdate(ExpressionSpecBuilder.remove(removePath));
    //set the attribute in the path location
    builder.addUpdate(new PathSetAction(ExpressionSpecBuilder.attribute(setPath),
            ExpressionSpecBuilder.attribute(removePath)));
}

---

From source file:com.github.fge.jsonpatch.PathValueOperation.java

License:LGPL

@Override
public void applyToBuilder(ExpressionSpecBuilder builder) {
    String attributePath = pathGenerator.apply(path);
    JsonNodeType type = value.getNodeType();
    switch (type) {
    case NUMBER:/*from   w w  w.j a  va  2 s .c  o m*/
        builder.addUpdate(ExpressionSpecBuilder.N(attributePath).set(value.numberValue()));
        break;

    case STRING:
        builder.addUpdate(ExpressionSpecBuilder.S(attributePath).set(value.textValue()));
        break;

    case BOOLEAN:
        builder.addUpdate(ExpressionSpecBuilder.BOOL(attributePath).set(value.booleanValue()));
        break;

    case NULL:
        builder.addUpdate(ExpressionSpecBuilder.NULL(attributePath).set());
        break;

    case ARRAY:
        if (value.iterator().hasNext() == false) {
            builder.addUpdate(ExpressionSpecBuilder.L(attributePath).set(Collections.emptyList()));
        } else {
            JsonNode repNode = value.iterator().next();
            if (repNode.isNumber()) {
                builder.addUpdate(ExpressionSpecBuilder.NS(attributePath).set(convertNumberList(value)));
            } else if (repNode.isTextual()) {
                builder.addUpdate(ExpressionSpecBuilder.SS(attributePath).set(convertStringList(value)));
            } else {
                throw new UnsupportedOperationException("Not implemented yet: " + repNode.getNodeType());
            }
        }
        break;

    case OBJECT:
        Map<String, ?> m = toMap(value);
        builder.addUpdate(ExpressionSpecBuilder.M(attributePath).set(m));
        break;

    default:
        // TODO Auto-generated method stub
        throw new UnsupportedOperationException("Not implemented yet: " + type);
    }
}

---

From source file:com.github.fge.jsonpatch.RemoveOperation.java

License:LGPL

@Override
public void applyToBuilder(ExpressionSpecBuilder builder) {
    String attributePath = pathGenerator.apply(path);
    builder.addUpdate(ExpressionSpecBuilder.remove(attributePath));
    //because it is an error to remove a path that does not exist
    //add an attribute_exists() condition
    builder.withCondition(ExpressionSpecBuilder.attribute_exists(pathGenerator.apply(path)));
}

---

From source file:jp.classmethod.aws.dynamodb.DynamoDbRepository.java

License:Open Source License

@Override
public E update(K key, JsonPatch patch, boolean increment, long version) {
    final PrimaryKey pk = createKeys(key);
    Preconditions.checkNotNull(patch, "patch must not be null");
    Preconditions.checkArgument(version >= -1);

    ExpressionSpecBuilder builder = patch.get();

    //add a condition on item existence
    builder.withCondition(ExpressionSpecBuilder.attribute_exists(hashKeyName));
    //add update expression for incrementing the version
    if (increment && versionProperty != null) {
        builder.addUpdate(ExpressionSpecBuilder.N(versionProperty)
                .set(ExpressionSpecBuilder.N(versionProperty).plus(1L)));
    }/*from   www. j a  v  a  2  s  . c o  m*/
    //add version condition
    if (version >= 0) {
        Preconditions.checkState(versionProperty != null);
        builder.withCondition(ExpressionSpecBuilder.N(versionProperty).eq(version));
    }

    UpdateItemExpressionSpec spec = builder.buildForUpdate();
    Preconditions.checkArgument(false == Strings.isNullOrEmpty(spec.getUpdateExpression()),
            "patch may not be empty"); // TODO add mechanism to JSON patch to allow iterating over list of ops
    try {
        UpdateItemOutcome updateItemOutcome = table.updateItem(new UpdateItemSpec().withExpressionSpec(spec)
                .withPrimaryKey(pk).withReturnValues(ReturnValue.ALL_NEW));
        return convertItemToDomain(updateItemOutcome.getItem());
    } catch (AmazonClientException e) {
        throw processUpdateItemException(key, e);
    }
}

---