refactor: Refactors load_table_* methods to reduce code duplication #2267
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This commit refactors the `load_table_from_uri`, `load_table_from_file`, `load_table_from_dataframe`, and `load_table_from_json` methods in the BigQuery client. A new private helper method, `_prepare_load_job`, has been introduced to centralize the creation and configuration of `LoadJob` objects. This eliminates redundant code for setting up job IDs, projects, and locations. A second helper, `_prepare_load_config`, was also added to standardize the handling of `LoadJobConfig` objects, merging user-provided configurations with client defaults. These changes make the loading methods more concise, easier to read, and simpler to maintain.
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This commit refactors the
load_table_from_uri,load_table_from_file,load_table_from_dataframe, andload_table_from_jsonmethods in the BigQuery client.A new private helper method,
_prepare_load_job, has been introduced to centralize the creation and configuration ofLoadJobobjects. This eliminates redundant code for setting up job IDs, projects, and locations.A second helper,
_prepare_load_config, was also added to standardize the handling ofLoadJobConfigobjects, merging user-provided configurations with client defaults.These changes make the loading methods more concise, easier to read, and simpler to maintain.