case class GenerateIdentityValues(generator: PartitionIdentityValueGenerator) extends LeafExpression with Nondeterministic with Product with Serializable
Returns the next generated IDENTITY column value based on the underlying PartitionIdentityValueGenerator.
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- new GenerateIdentityValues(generator: PartitionIdentityValueGenerator)
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Returns the DataType of the result of evaluating this expression.
Returns the DataType of the result of evaluating this expression. It is invalid to query the dataType of an unresolved expression (i.e., when
resolved== false).- Definition Classes
- GenerateIdentityValues → Expression
- final lazy val deterministic: Boolean
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- def doGenCode(ctx: CodegenContext, ev: ExprCode): ExprCode
Returns Java source code that can be compiled to evaluate this expression.
Returns Java source code that can be compiled to evaluate this expression. The default behavior is to call the eval method of the expression. Concrete expression implementations should override this to do actual code generation.
- ctx
a CodegenContext
- ev
an ExprCode with unique terms.
- returns
an ExprCode containing the Java source code to generate the given expression
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- final def eq(arg0: AnyRef): Boolean
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- def evalInternal(input: InternalRow): Long
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- val generator: PartitionIdentityValueGenerator
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- final def initialize(partitionIndex: Int): Unit
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- def nullIntolerant: Boolean
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- GenerateIdentityValues → Expression
- def numberedTreeString: String
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- val origin: Origin
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- def p(number: Int): Expression
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- def transform(rule: PartialFunction[Expression, Expression]): Expression
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- def transformDown(rule: PartialFunction[Expression, Expression]): Expression
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- def transformDownWithPruning(cond: (TreePatternBits) => Boolean, ruleId: RuleId)(rule: PartialFunction[Expression, Expression]): Expression
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- def transformUp(rule: PartialFunction[Expression, Expression]): Expression
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- def transformUpWithBeforeAndAfterRuleOnChildren(cond: (Expression) => Boolean, ruleId: RuleId)(rule: PartialFunction[(Expression, Expression), Expression]): Expression
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- def transformUpWithPruning(cond: (TreePatternBits) => Boolean, ruleId: RuleId)(rule: PartialFunction[Expression, Expression]): Expression
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- def transformWithPruning(cond: (TreePatternBits) => Boolean, ruleId: RuleId)(rule: PartialFunction[Expression, Expression]): Expression
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- lazy val treePatternBits: BitSet
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- def treeString(append: (String) => Unit, verbose: Boolean, addSuffix: Boolean, maxFields: Int, printOperatorId: Boolean): Unit
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- final def withNewChildren(newChildren: Seq[Expression]): Expression
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- Deprecated
(Since version 9)