Package org.apache.flink.table.planner.expressions.converter

Interface CallExpressionConvertRule

All Known Implementing Classes:

CustomizedConvertRule, DirectConvertRule, FunctionDefinitionConvertRule, LegacyScalarFunctionConvertRule, OverConvertRule

@Internal
public interface CallExpressionConvertRule

Rule to convert CallExpression.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	CallExpressionConvertRule.ConvertContext	Context of CallExpressionConvertRule.

Method Summary

Modifier and Type	Method	Description
Optional<org.apache.calcite.rex.RexNode>	convert(org.apache.flink.table.expressions.CallExpression call, CallExpressionConvertRule.ConvertContext context)	Convert call expression with context to RexNode.

Method Details

convert

Optional<org.apache.calcite.rex.RexNode> convert(org.apache.flink.table.expressions.CallExpression call,
 CallExpressionConvertRule.ConvertContext context)

Convert call expression with context to RexNode.

Returns:

Success return RexNode of Optional.of(T), Fail return Optional.empty().