Package org.apache.nifi.sql

Class ColumnSchema

java.lang.Object

org.apache.nifi.sql.ColumnSchema

public class ColumnSchema
extends Object

A schema that describes a single column in a NiFiTable

Field Summary

Fields

Modifier and Type	Field	Description
private final ColumnType	columnType
private final String	name
private final boolean	nullable

Constructor Summary

Constructors

Constructor	Description
ColumnSchema(String name, Class<?> type, boolean nullable)	Convenience method to create a schema for a column with a scalar value.
ColumnSchema(String name, ColumnType type, boolean nullable)	Creates a column schema with the given name and type that is optionally nullable

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object other)
String	getName()
int	hashCode()
boolean	isNullable()
(package private) org.apache.calcite.rel.type.RelDataType	toRelationalDataType(org.apache.calcite.adapter.java.JavaTypeFactory typeFactory)
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

name

private final String name

columnType

private final ColumnType columnType

nullable

private final boolean nullable

Constructor Details

ColumnSchema

public ColumnSchema(String name,
 Class<?> type,
 boolean nullable)

Convenience method to create a schema for a column with a scalar value.

This is equivalent to calling new ColumnSchema(name, new ScalarType(type), nullable);

Parameters:

name - the name of the column

type - the type of the column

nullable - whether or not the column supports null values

ColumnSchema

public ColumnSchema(String name,
 ColumnType type,
 boolean nullable)

Creates a column schema with the given name and type that is optionally nullable

Parameters:

name - the name of the column

type - the type of the column

nullable - whether or not the column supports null values

Method Details

getName

public String getName()

isNullable

public boolean isNullable()

toRelationalDataType

org.apache.calcite.rel.type.RelDataType toRelationalDataType(org.apache.calcite.adapter.java.JavaTypeFactory typeFactory)

equals

public boolean equals(Object other)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object