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list_sub_codec.go
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list_sub_codec.go
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/*
* Copyright (c) 2008-2021, Hazelcast, Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License")
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package codec
import (
"github.com/hazelcast/hazelcast-go-client/internal/proto"
iserialization "github.com/hazelcast/hazelcast-go-client/internal/serialization"
)
const (
// hex: 0x051500
ListSubCodecRequestMessageType = int32(333056)
// hex: 0x051501
ListSubCodecResponseMessageType = int32(333057)
ListSubCodecRequestFromOffset = proto.PartitionIDOffset + proto.IntSizeInBytes
ListSubCodecRequestToOffset = ListSubCodecRequestFromOffset + proto.IntSizeInBytes
ListSubCodecRequestInitialFrameSize = ListSubCodecRequestToOffset + proto.IntSizeInBytes
)
// Returns a view of the portion of this list between the specified from, inclusive, and to, exclusive.(If from and
// to are equal, the returned list is empty.) The returned list is backed by this list, so non-structural changes in
// the returned list are reflected in this list, and vice-versa. The returned list supports all of the optional list
// operations supported by this list.
// This method eliminates the need for explicit range operations (of the sort that commonly exist for arrays).
// Any operation that expects a list can be used as a range operation by passing a subList view instead of a whole list.
// Similar idioms may be constructed for indexOf and lastIndexOf, and all of the algorithms in the Collections class
// can be applied to a subList.
// The semantics of the list returned by this method become undefined if the backing list (i.e., this list) is
// structurally modified in any way other than via the returned list.(Structural modifications are those that change
// the size of this list, or otherwise perturb it in such a fashion that iterations in progress may yield incorrect results.)
func EncodeListSubRequest(name string, from int32, to int32) *proto.ClientMessage {
clientMessage := proto.NewClientMessageForEncode()
clientMessage.SetRetryable(true)
initialFrame := proto.NewFrameWith(make([]byte, ListSubCodecRequestInitialFrameSize), proto.UnfragmentedMessage)
FixSizedTypesCodec.EncodeInt(initialFrame.Content, ListSubCodecRequestFromOffset, from)
FixSizedTypesCodec.EncodeInt(initialFrame.Content, ListSubCodecRequestToOffset, to)
clientMessage.AddFrame(initialFrame)
clientMessage.SetMessageType(ListSubCodecRequestMessageType)
clientMessage.SetPartitionId(-1)
EncodeString(clientMessage, name)
return clientMessage
}
func DecodeListSubResponse(clientMessage *proto.ClientMessage) []*iserialization.Data {
frameIterator := clientMessage.FrameIterator()
// empty initial frame
frameIterator.Next()
return DecodeListMultiFrameForData(frameIterator)
}