{
  "$id": "https://opendatafabric.org/schemas/datasets/v1alpha1/ExecuteTransformInput",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "description": "Describes a slice of the input dataset used during a transformation",
  "type": "object",
  "required": [
    "datasetId"
  ],
  "properties": {
    "datasetId": {
      "type": "string",
      "format": "dataset-id",
      "description": "Input dataset identifier."
    },
    "prevBlockHash": {
      "type": "string",
      "format": "multihash",
      "description": "Last block of the input dataset that was previously incorporated into the derivative transformation, if any. Must be equal to the last non-empty `newBlockHash`. Together with `newBlockHash` defines a half-open `(prevBlockHash, newBlockHash]` interval of blocks that will be considered in this transaction."
    },
    "newBlockHash": {
      "type": "string",
      "format": "multihash",
      "description": "Hash of the last block that will be incorporated into the derivative transformation. When present, defines a half-open `(prevBlockHash, newBlockHash]` interval of blocks that will be considered in this transaction."
    },
    "prevOffset": {
      "type": "integer",
      "format": "uint64",
      "description": "Last data record offset in the input dataset that was previously incorporated into the derivative transformation, if any. Must be equal to the last non-empty `newOffset`. Together with `newOffset` defines a half-open `(prevOffset, newOffset]` interval of data records that will be considered in this transaction."
    },
    "newOffset": {
      "type": "integer",
      "format": "uint64",
      "description": "Offset of the last data record that will be incorporated into the derivative transformation, if any. When present, defines a half-open `(prevOffset, newOffset]` interval of data records that will be considered in this transaction."
    }
  }
}