org.apache.calcite.model

Class ModelHandler

java.lang.Object

org.apache.calcite.model.ModelHandler

public class ModelHandler
extends Object

Reads a model and creates schema objects accordingly.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ModelHandler.ExtraOperand Extra operands automatically injected into a JsonCustomSchema.operand, as extra context for the adapter.

Constructor Summary

Constructors

Constructor and Description
ModelHandler(CalciteConnection connection, String uri)

Method Summary

Modifier and Type	Method and Description
static void	addFunctions(SchemaPlus schema, @Nullable String functionName, List<String> path, String className, @Nullable String methodName, boolean upCase) Creates and validates a ScalarFunctionImpl, and adds it to a schema.
static void	create(SchemaPlus schema, String functionName, List<String> path, String className, String methodName) Deprecated. Use addFunctions(org.apache.calcite.schema.SchemaPlus, java.lang.String, java.util.List<java.lang.String>, java.lang.String, java.lang.String, boolean).
protected Map<String,Object>	operandMap(@Nullable JsonSchema jsonSchema, @Nullable Map<String,Object> operand) Adds extra entries to an operand to a custom schema.
void	visit(JsonColumn jsonColumn)
void	visit(JsonCustomSchema jsonSchema)
void	visit(JsonCustomTable jsonTable)
void	visit(JsonFunction jsonFunction)
void	visit(JsonJdbcSchema jsonSchema)
void	visit(JsonLattice jsonLattice)
void	visit(JsonMapSchema jsonSchema)
void	visit(JsonMaterialization jsonMaterialization)
void	visit(JsonMeasure jsonMeasure)
void	visit(JsonRoot jsonRoot)
void	visit(JsonTile jsonTile)
void	visit(JsonType jsonType)
void	visit(JsonView jsonView)

Methods inherited from class java.lang.Object

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

Constructor Detail

ModelHandler

public ModelHandler(CalciteConnection connection,
                    String uri)
             throws IOException

Throws:

IOException

Method Detail

create

@Deprecated
public static void create(SchemaPlus schema,
                                      String functionName,
                                      List<String> path,
                                      String className,
                                      String methodName)

Deprecated. Use addFunctions(org.apache.calcite.schema.SchemaPlus, java.lang.String, java.util.List<java.lang.String>, java.lang.String, java.lang.String, boolean).

addFunctions

public static void addFunctions(SchemaPlus schema,
                                @Nullable String functionName,
                                List<String> path,
                                String className,
                                @Nullable String methodName,
                                boolean upCase)

Creates and validates a ScalarFunctionImpl, and adds it to a schema. If methodName is "*", may add more than one function.

Parameters:

schema - Schema to add to

functionName - Name of function; null to derived from method name

path - Path to look for functions

className - Class to inspect for methods that may be user-defined functions

methodName - Method name; null means use the class as a UDF; "*" means add all methods

upCase - Whether to convert method names to upper case, so that they can be called without using quotes

visit

public void visit(JsonRoot jsonRoot)

visit

public void visit(JsonMapSchema jsonSchema)

visit

public void visit(JsonCustomSchema jsonSchema)

operandMap

protected Map<String,Object> operandMap(@Nullable JsonSchema jsonSchema,
                                        @Nullable Map<String,Object> operand)

Adds extra entries to an operand to a custom schema.

visit

public void visit(JsonJdbcSchema jsonSchema)

visit

public void visit(JsonMaterialization jsonMaterialization)

visit

public void visit(JsonLattice jsonLattice)

visit

public void visit(JsonCustomTable jsonTable)

visit

public void visit(JsonColumn jsonColumn)

visit

public void visit(JsonView jsonView)

visit

public void visit(JsonType jsonType)

visit

public void visit(JsonFunction jsonFunction)

visit

public void visit(JsonMeasure jsonMeasure)

visit

public void visit(JsonTile jsonTile)