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.

Field Summary

Fields

Modifier and Type	Field and Description
private CalciteConnection	connection
(package private) Lattice.Builder	latticeBuilder
private String	modelUri
private Deque<Pair<String,SchemaPlus>>	schemaStack
(package private) Lattice.TileBuilder	tileBuilder

Constructor Summary

Constructors

Constructor and Description
ModelHandler(CalciteConnection connection, String uri)

Method Summary

Modifier and Type	Method and Description
static void	addFunctions(SchemaPlus schema, String functionName, List<String> path, String className, String methodName, boolean upCase) Creates and validates a ScalarFunctionImpl, and adds it to a schema.
private void	checkRequiredAttributes(Object json, String... attributeNames)
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).
private SchemaPlus	currentMutableSchema(String elementType)
private SchemaPlus	currentSchema()
private String	currentSchemaName()
private List<String>	currentSchemaPath()
protected Map<String,Object>	operandMap(JsonSchema jsonSchema, Map<String,Object> operand) Adds extra entries to an operand to a custom schema.
private void	populateLattice(JsonLattice jsonLattice, Lattice.Builder latticeBuilder)
private void	populateSchema(JsonSchema jsonSchema, SchemaPlus schema)
private static com.google.common.collect.ImmutableList<String>	stringList(Object s)
private static com.google.common.collect.ImmutableList<com.google.common.collect.ImmutableList<String>>	stringListList(List path)
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(JsonView jsonView)

Methods inherited from class java.lang.Object

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

Field Detail

connection

private final CalciteConnection connection

schemaStack

private final Deque<Pair<String,SchemaPlus>> schemaStack

modelUri

private final String modelUri

latticeBuilder

Lattice.Builder latticeBuilder

tileBuilder

Lattice.TileBuilder tileBuilder

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,
                                String functionName,
                                List<String> path,
                                String className,
                                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

checkRequiredAttributes

private void checkRequiredAttributes(Object json,
                                     String... attributeNames)

visit

public void visit(JsonRoot jsonRoot)

visit

public void visit(JsonMapSchema jsonSchema)

stringListList

private static com.google.common.collect.ImmutableList<com.google.common.collect.ImmutableList<String>> stringListList(List path)

stringList

private static com.google.common.collect.ImmutableList<String> stringList(Object s)

populateSchema

private void populateSchema(JsonSchema jsonSchema,
                            SchemaPlus schema)

visit

public void visit(JsonCustomSchema jsonSchema)

operandMap

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

populateLattice

private void populateLattice(JsonLattice jsonLattice,
                             Lattice.Builder latticeBuilder)

visit

public void visit(JsonCustomTable jsonTable)

visit

public void visit(JsonColumn jsonColumn)

visit

public void visit(JsonView jsonView)

currentSchemaPath

private List<String> currentSchemaPath()

currentSchema

private SchemaPlus currentSchema()

currentSchemaName

private String currentSchemaName()

currentMutableSchema

private SchemaPlus currentMutableSchema(String elementType)

visit

public void visit(JsonFunction jsonFunction)

visit

public void visit(JsonMeasure jsonMeasure)

visit

public void visit(JsonTile jsonTile)