Package ai.rapids.cudf.ast

Class CompiledExpression

java.lang.Object

ai.rapids.cudf.ast.CompiledExpression

All Implemented Interfaces:

AutoCloseable

public class CompiledExpression
extends Object
implements AutoCloseable

This class wraps a native compiled AST and must be closed to avoid native memory leaks.

Method Summary

Modifier and Type	Method	Description
void	close()
ColumnVector	computeColumn(Table table)	Compute a new column by applying this AST expression to the specified table.
long	getNativeHandle()	Returns the native address of a compiled expression.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

computeColumn

public ColumnVector computeColumn(Table table)

Compute a new column by applying this AST expression to the specified table. All ColumnReference instances within the expression will use the sole input table, even if they try to specify a non-existent table, e.g.: TableReference.RIGHT.

Parameters:

table - input table for this expression

Returns:

new column computed from this expression applied to the input table

close

public void close()

Specified by:

close in interface AutoCloseable

getNativeHandle

public long getNativeHandle()

Returns the native address of a compiled expression. Intended for internal cudf use only.