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object CatalystExpressionBuilder extends Logging with Serializable

CatalystExpressionBuilder helper object, contains a function that is used to simplify a directly translated catalyst expression (from bytecode) into something simpler that the remaining catalyst optimizations can handle.

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  1. CatalystExpressionBuilder
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  29. final def simplify(expr: Expression): Expression

    simplify: given a raw converted catalyst expression, attempt to match patterns to simplify before handing it over to catalyst optimizers (the LogicalPlan does this later).

    simplify: given a raw converted catalyst expression, attempt to match patterns to simplify before handing it over to catalyst optimizers (the LogicalPlan does this later).

    It is called from State.merge, from itself, and from BB.propagateState.

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  1. def finalize(): Unit
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