RelJson (Calcite Core 1.2.0-incubating API)

```
public class RelJson
extends Object
```
Utilities for converting RelNode into JSON format.

Fields
Modifier and Type	Field and Description
`static List<String>`	`PACKAGES`

Constructors
Constructor and Description
`RelJson(JsonBuilder jsonBuilder)`

Methods
Modifier and Type	Method and Description
`String`	`classToTypeName(Class<? extends RelNode> class_)` Inverse of `typeNameToClass(java.lang.String)`.
`RelNode`	`create(Map<String,Object> map)`
`Constructor`	`getConstructor(String type)`
`RelCollation`	`toCollation(List<Map<String,Object>> jsonFieldCollations)`
`RelDistribution`	`toDistribution(Object o)`
`RelFieldCollation`	`toFieldCollation(Map<String,Object> map)`
`Object`	`toJson(AggregateCall node)`
`Object`	`toJson(RelCollationImpl node)`
`RelDataType`	`toType(RelDataTypeFactory typeFactory, Object o)`
`Class`	`typeNameToClass(String type)` Converts a type name to a class.

public static final List<String> PACKAGES

public RelJson(JsonBuilder jsonBuilder)

public RelNode create(Map<String,Object> map)

public Constructor getConstructor(String type)

typeNameToClass
```
public Class typeNameToClass(String type)
```
Converts a type name to a class. E.g. getClass("LogicalProject") returns LogicalProject.class.

public String classToTypeName(Class<? extends RelNode> class_)

public Object toJson(RelCollationImpl node)

public RelCollation toCollation(List<Map<String,Object>> jsonFieldCollations)

public RelFieldCollation toFieldCollation(Map<String,Object> map)

public RelDistribution toDistribution(Object o)

public RelDataType toType(RelDataTypeFactory typeFactory,
                 Object o)

public Object toJson(AggregateCall node)

Class RelJson