trait FunctionRegistryBase[T] extends AnyRef
A catalog for looking up user defined functions, used by an Analyzer.
Note: 1) The implementation should be thread-safe to allow concurrent access. 2) the database name is always case-sensitive here, callers are responsible to format the database name w.r.t. case-sensitive config.
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Type Members
- type FunctionBuilder = (Seq[Expression]) => T
Abstract Value Members
- abstract def clear(): Unit
Clear all registered functions.
- abstract def dropFunction(name: FunctionIdentifier): Boolean
Drop a function and return whether the function existed.
- abstract def listFunction(): Seq[FunctionIdentifier]
- abstract def lookupFunction(name: FunctionIdentifier): Option[ExpressionInfo]
- abstract def lookupFunction(name: FunctionIdentifier, children: Seq[Expression]): T
- Annotations
- @throws("If function does not exist")
- abstract def lookupFunctionBuilder(name: FunctionIdentifier): Option[FunctionBuilder]
- abstract def registerFunction(name: FunctionIdentifier, info: ExpressionInfo, builder: FunctionBuilder): Unit
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- final def !=(arg0: Any): Boolean
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- @throws(classOf[java.lang.CloneNotSupportedException]) @native()
- final def createOrReplaceTempFunction(name: String, builder: FunctionBuilder, source: String): Unit
- final def eq(arg0: AnyRef): Boolean
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- def finalize(): Unit
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- def functionExists(name: FunctionIdentifier): Boolean
Checks if a function with a given name exists.
- final def getClass(): Class[_ <: AnyRef]
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- def hashCode(): Int
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- final def registerFunction(name: FunctionIdentifier, builder: FunctionBuilder, source: String): Unit
- final def synchronized[T0](arg0: => T0): T0
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- final def wait(): Unit
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- final def wait(arg0: Long, arg1: Int): Unit
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