FunctionRegistry

abstract def clear(): Unit

Clear all registered functions.

abstract def dropFunction(name: String): Boolean

Drop a function and return whether the function existed.

abstract def listFunction(): Seq[String]

abstract def lookupFunction(name: String): Option[ExpressionInfo]

abstract def lookupFunction(name: String, children: Seq[Expression]): Expression

abstract def lookupFunctionBuilder(name: String): Option[FunctionBuilder]

abstract def registerFunction(name: String, info: ExpressionInfo, builder: FunctionBuilder): Unit

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

def clone(): AnyRef

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def finalize(): Unit

def functionExists(name: String): Boolean

Checks if a function with a given name exists.

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

final def registerFunction(name: String, builder: FunctionBuilder): Unit

final def synchronized[T0](arg0: ⇒ T0): T0

def toString(): String

final def wait(): Unit

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit