org.apache.calcite.example.maze

Class MazeTable

java.lang.Object

org.apache.calcite.schema.impl.AbstractTable

org.apache.calcite.example.maze.MazeTable

All Implemented Interfaces:

org.apache.calcite.schema.ScannableTable, org.apache.calcite.schema.Table, org.apache.calcite.schema.Wrapper

public class MazeTable
extends org.apache.calcite.schema.impl.AbstractTable
implements org.apache.calcite.schema.ScannableTable

User-defined table function that generates a Maze and prints it in text form.

Method Summary

Modifier and Type	Method and Description
static org.apache.calcite.schema.ScannableTable	generate(int width, int height, int seed) Table function that generates a maze.
org.apache.calcite.rel.type.RelDataType	getRowType(org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)
org.apache.calcite.linq4j.Enumerable<Object[]>	scan(org.apache.calcite.DataContext root)
static org.apache.calcite.schema.ScannableTable	solve(int width, int height, int seed) Table function that generates a maze with a solution.

Methods inherited from class org.apache.calcite.schema.impl.AbstractTable

getJdbcTableType, getStatistic, isRolledUp, rolledUpColumnValidInsideAgg, unwrap

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.calcite.schema.Table

getJdbcTableType, getStatistic, isRolledUp, rolledUpColumnValidInsideAgg

Methods inherited from interface org.apache.calcite.schema.Wrapper

maybeUnwrap, unwrapOrThrow

Method Detail

generate

public static org.apache.calcite.schema.ScannableTable generate(int width,
                                                                int height,
                                                                int seed)

Table function that generates a maze.

Called by reflection based on the definition of the user-defined function in the schema.

Parameters:

width - Width of maze

height - Height of maze

seed - Random number seed, or -1 to create an unseeded random

Returns:

Table that prints the maze in text form

solve

public static org.apache.calcite.schema.ScannableTable solve(int width,
                                                             int height,
                                                             int seed)

Table function that generates a maze with a solution.

Called by reflection based on the definition of the user-defined function in the schema.

Parameters:

width - Width of maze

height - Height of maze

seed - Random number seed, or -1 to create an unseeded random

Returns:

Table that prints the maze in text form, with solution shown

getRowType

public org.apache.calcite.rel.type.RelDataType getRowType(org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)

Specified by:

getRowType in interface org.apache.calcite.schema.Table

scan

public org.apache.calcite.linq4j.Enumerable<Object[]> scan(org.apache.calcite.DataContext root)

Specified by:

scan in interface org.apache.calcite.schema.ScannableTable