Package org.apache.calcite.adapter.enumerable

Interface NestedBlockBuilder

All Known Subinterfaces:

AggAddContext, AggResetContext, AggResultContext, WinAggAddContext, WinAggResetContext, WinAggResultContext

All Known Implementing Classes:

AggAddContextImpl, AggResetContextImpl, AggResultContextImpl, NestedBlockBuilderImpl, WinAggAddContextImpl, WinAggResetContextImpl, WinAggResultContextImpl

public interface NestedBlockBuilder

Allows to build nested code blocks with tracking of current context.

See Also:

• StrictAggImplementor.implementAdd(AggContext, AggAddContext)

Method Summary

Modifier and Type	Method	Description
BlockBuilder	currentBlock()	Returns the current code block.
void	exitBlock()	Leaves the current code block.
BlockBuilder	nestBlock()	Starts nested code block.
void	nestBlock(BlockBuilder block)	Uses given block as the new code context.

Method Details

nestBlock

BlockBuilder nestBlock()

Starts nested code block. The resulting block can optimize expressions and reuse already calculated values from the parent blocks.

Returns:

new code block that can optimize expressions and reuse already calculated values from the parent blocks.

nestBlock

void nestBlock(BlockBuilder block)

Uses given block as the new code context. The current block will be restored after exitBlock() call.

Parameters:

block - new code block

See Also:

• exitBlock()

currentBlock

BlockBuilder currentBlock()

Returns the current code block.

exitBlock

void exitBlock()

Leaves the current code block.

See Also:

• nestBlock()