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

类 CustomizedConvertRule

java.lang.Object

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

所有已实现的接口:

CallExpressionConvertRule

@Internal
public class CustomizedConvertRule
extends Object
implements CallExpressionConvertRule

Customized CallExpressionConvertRule, Functions conversion here all require special logic, and there may be some special rules, such as needing get the literal values of inputs, such as converting to combinations of functions, to convert to RexNode of calcite.

嵌套类概要

从接口继承的嵌套类/接口 org.apache.flink.table.planner.expressions.converter.CallExpressionConvertRule

CallExpressionConvertRule.ConvertContext

构造器概要

构造器

构造器和说明
CustomizedConvertRule()

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.

从类继承的方法 java.lang.Object

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

构造器详细资料

CustomizedConvertRule

public CustomizedConvertRule()

方法详细资料

convert

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

从接口复制的说明: CallExpressionConvertRule

Convert call expression with context to RexNode.

指定者:

convert 在接口中 CallExpressionConvertRule

返回:

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