java.lang.Object
- org.apache.calcite.plan.RelOptRule
- - org.apache.flink.table.planner.plan.rules.logical.PushLimitIntoTableSourceScanRule

```
public class PushLimitIntoTableSourceScanRule
extends org.apache.calcite.plan.RelOptRule
```
Planner rule that tries to push limit into a FlinkLogicalTableSourceScan, which table is a TableSourceTable. And the table source in the table is a SupportsLimitPushDown. The original limit will still be retained. The reasons why the limit still be retained: 1.If the source is required to return the exact number of limit number, the implementation of the source is highly required. The source is required to accurately control the record number of split, and the parallelism setting also need to be adjusted accordingly. 2.When remove the limit, maybe filter will be pushed down to the source after limit pushed down. The source need know it should do limit first and do the filter later, it is hard to implement. 3.We can support limit with offset, we can push down offset + fetch to table source.

Nested Class Summary
- Nested classes/interfaces inherited from class org.apache.calcite.plan.RelOptRule
  org.apache.calcite.plan.RelOptRule.ConverterRelOptRuleOperand

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`matches(org.apache.calcite.plan.RelOptRuleCall call)`
`void`	`onMatch(org.apache.calcite.plan.RelOptRuleCall call)`

Methods inherited from class org.apache.calcite.plan.RelOptRule
any, convert, convert, convertList, convertOperand, convertOperand, equals, equals, getOperand, getOperands, getOutConvention, getOutTrait, hashCode, none, operand, operand, operand, operand, operand, operandJ, operandJ, some, toString, unordered

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

public static final PushLimitIntoTableSourceScanRule INSTANCE

Constructor Detail
- PushLimitIntoTableSourceScanRule
```
public PushLimitIntoTableSourceScanRule()
```

Class PushLimitIntoTableSourceScanRule