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

接口 CallExpressionConvertRule

所有已知实现类:

CustomizedConvertRule, DirectConvertRule, FunctionDefinitionConvertRule, LegacyScalarFunctionConvertRule, OverConvertRule

@Internal
public interface CallExpressionConvertRule

Rule to convert CallExpression.

嵌套类概要

嵌套类

限定符和类型	接口和说明
static interface	CallExpressionConvertRule.ConvertContext Context of CallExpressionConvertRule.

方法概要

限定符和类型	方法和说明
Optional<org.apache.calcite.rex.RexNode>	convert(org.apache.flink.table.expressions.CallExpression call, CallExpressionConvertRule.ConvertContext context) Convert call expression with context to RexNode.

方法详细资料

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.

返回:

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