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package dynamodb |
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import ( |
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"context" |
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SDK "github.com/aws/aws-sdk-go-v2/service/dynamodb" |
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"github.com/evalphobia/aws-sdk-go-v2-wrapper/errors" |
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"github.com/evalphobia/aws-sdk-go-v2-wrapper/private/pointers" |
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) |
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// UpdateItem executes `UpdateItem` operation. |
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func (svc *DynamoDB) UpdateItem(ctx context.Context, r UpdateItemRequest) (*UpdateItemResult, error) { |
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in, err := r.ToInput() |
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if err != nil { |
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return nil, err |
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} |
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out, err := svc.RawUpdateItem(ctx, in) |
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if err == nil { |
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return NewUpdateItemResult(out), nil |
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} |
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err = svc.errWrap(errors.ErrorData{ |
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Err: err, |
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AWSOperation: "UpdateItem", |
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}) |
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svc.Errorf(err.Error()) |
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return nil, err |
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} |
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// UpdateItemRequest has parameters for `UpdateItem` operation. |
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type UpdateItemRequest struct { |
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TableName string |
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Key map[string]AttributeValue |
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// optional |
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ConditionExpression string |
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ExpressionAttributeNames map[string]string |
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ExpressionAttributeValues map[string]AttributeValue |
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ReturnConsumedCapacity ReturnConsumedCapacity |
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ReturnItemCollectionMetrics ReturnItemCollectionMetrics |
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ReturnValues ReturnValue |
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UpdateExpression string |
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XConditions XConditions |
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} |
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func (r UpdateItemRequest) ToInput() (*SDK.UpdateItemInput, error) { |
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in := &SDK.UpdateItemInput{} |
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if r.TableName != "" { |
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in.TableName = pointers.String(r.TableName) |
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} |
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if len(r.Key) != 0 { |
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m := make(map[string]SDK.AttributeValue, len(r.Key)) |
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for key, val := range r.Key { |
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m[key] = val.ToSDK() |
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} |
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in.Key = m |
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} |
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if r.ConditionExpression != "" { |
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in.ConditionExpression = pointers.String(r.ConditionExpression) |
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} |
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if len(r.ExpressionAttributeValues) != 0 { |
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m := make(map[string]SDK.AttributeValue, len(r.ExpressionAttributeValues)) |
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for key, val := range r.ExpressionAttributeValues { |
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m[key] = val.ToSDK() |
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} |
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in.ExpressionAttributeValues = m |
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} |
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in.ReturnConsumedCapacity = SDK.ReturnConsumedCapacity(r.ReturnConsumedCapacity) |
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in.ReturnItemCollectionMetrics = SDK.ReturnItemCollectionMetrics(r.ReturnItemCollectionMetrics) |
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in.ReturnValues = SDK.ReturnValue(r.ReturnValues) |
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if r.UpdateExpression != "" { |
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in.UpdateExpression = pointers.String(r.UpdateExpression) |
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} |
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if r.XConditions.hasValue() { |
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expr, err := r.XConditions.Build() |
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if err != nil { |
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return nil, err |
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} |
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in.ConditionExpression = expr.Condition() |
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in.ExpressionAttributeNames = expr.Names() |
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in.ExpressionAttributeValues = expr.Values() |
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in.UpdateExpression = expr.Update() |
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} |
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return in, nil |
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} |
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// UpdateItemResult contains results from `UpdateItem` operation. |
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type UpdateItemResult struct { |
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Attributes map[string]AttributeValue |
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ConsumedCapacity ConsumedCapacity |
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ItemCollectionMetrics ItemCollectionMetrics |
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} |
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func NewUpdateItemResult(output *SDK.UpdateItemResponse) *UpdateItemResult { |
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r := &UpdateItemResult{} |
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if output == nil { |
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return r |
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} |
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r.Attributes = newAttributeValueMap(output.Attributes) |
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if output.ConsumedCapacity != nil { |
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r.ConsumedCapacity = newConsumedCapacity(*output.ConsumedCapacity) |
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} |
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if output.ItemCollectionMetrics != nil { |
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r.ItemCollectionMetrics = newItemCollectionMetrics(*output.ItemCollectionMetrics) |
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} |
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return r |
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} |
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