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Read Modify Write Rules

class google.cloud.bigtable.data.read_modify_write_rules.AppendValueRule(family: str, qualifier: bytes | str, append_value: bytes | str)

Bases: google.cloud.bigtable.data.read_modify_write_rules.ReadModifyWriteRule

Rule to append a value to a cell’s value.

• Parameters

  • family – The family name of the cell to append to.

  • qualifier – The qualifier of the cell to append to.

  • append_value – The value to append to the cell’s value.

• Raises

  TypeError – If append_value is not bytes or str.

class google.cloud.bigtable.data.read_modify_write_rules.IncrementRule(family: str, qualifier: bytes | str, increment_amount: int = 1)

Bases: google.cloud.bigtable.data.read_modify_write_rules.ReadModifyWriteRule

Rule to increment a cell’s value.

• Parameters

  • family – The family name of the cell to increment.

  • qualifier – The qualifier of the cell to increment.

  • increment_amount – The amount to increment the cell’s value. Must be between -2**63 and 2**63 (64-bit signed int).

• Raises

  • TypeError – If increment_amount is not an integer.

  • ValueError – If increment_amount is not between -2**63 and 2**63 (64-bit signed int).

class google.cloud.bigtable.data.read_modify_write_rules.ReadModifyWriteRule(family: str, qualifier: bytes | str)

Bases: abc.ABC

Abstract base class for read-modify-write rules.