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Metadata replacement

Node PostProcessor module.

MetadataReplacementPostProcessor #

Bases: BaseNodePostprocessor

Parameters:

Name Type Description Default
target_metadata_key str

Target metadata key to replace node content with.

 required
Source code in llama-index-core/llama_index/core/postprocessor/metadata_replacement.py 
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class MetadataReplacementPostProcessor(BaseNodePostprocessor):
    target_metadata_key: str = Field(
        description="Target metadata key to replace node content with."
    )

    def __init__(self, target_metadata_key: str) -> None:
        super().__init__(target_metadata_key=target_metadata_key)

    @classmethod
    def class_name(cls) -> str:
        return "MetadataReplacementPostProcessor"

    def _postprocess_nodes(
        self,
        nodes: List[NodeWithScore],
        query_bundle: Optional[QueryBundle] = None,
    ) -> List[NodeWithScore]:
        for n in nodes:
            n.node.set_content(
                n.node.metadata.get(
                    self.target_metadata_key,
                    n.node.get_content(metadata_mode=MetadataMode.NONE),
                )
            )

        return nodes