Class MongoDbColumn

java.lang.Object

io.helidon.dbclient.DbColumnBase

io.helidon.dbclient.mongodb.MongoDbColumn

All Implemented Interfaces:

OptionalValue<Object>, Value<Object>, DbColumn

public final class MongoDbColumn
extends DbColumnBase

Mongo implementation of DbColumn.

Method Summary

Modifier and Type	Method	Description
String	dbType()	Type of the column in the language of the database.
Class<?>	javaType()	Type of the column as would be returned by the underlying database driver.
String	name()	Column name.

Methods inherited from class DbColumnBase

as, as, as, asBoolean, asDouble, asInt, asLong, asOptional, asString, get, get, map, map, rawValue

Modifier and Type	Method	Description
<N> OptionalValue<N>	as(GenericType<N> type)	Convert this value to a different type using a mapper.
<N> OptionalValue<N>	as(Class<N> type)	Convert this value to a different type using a mapper.
<N> OptionalValue<N>	as(Function<? super Object, ? extends N> mapper)	Convert this Value to a different type using a mapper function.
OptionalValue<Boolean>	asBoolean()	Boolean typed value.
OptionalValue<Double>	asDouble()	Double typed value.
OptionalValue<Integer>	asInt()	Integer typed value.
OptionalValue<Long>	asLong()	Long typed value.
Optional<Object>	asOptional()	Typed value as Optional.
OptionalValue<String>	asString()	String typed value.
<T> T	get(GenericType<T> type)	Value of this column as a generic type.
<T> T	get(Class<T> type)	Typed value of this column.
protected <SRC,T> T	map(SRC value, GenericType<T> type)	Map value to target type using Mapper.
protected <SRC,T> T	map(SRC value, Class<T> type)	Map value to target type using Mapper.
protected Object	rawValue()	Get raw value of the database column.

Methods inherited from class Object

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

Methods inherited from interface DbColumn

get, precision, scale

Modifier and Type	Method	Description
default Object	get()	Untyped value of this column, returns java type as provided by the underlying database driver.
default Optional<Integer>	precision()	Precision of this column.
default Optional<Integer>	scale()	Scale of this column.

Methods inherited from interface OptionalValue

ifPresent, ifPresentOrElse, isEmpty, isPresent, map, or, orElse, orElseGet, orElseThrow, orElseThrow

Modifier and Type	Method	Description
default void	ifPresent(Consumer<? super Object> consumer)	If a value is present, invoke the specified consumer with the value, otherwise do nothing.
default void	ifPresentOrElse(Consumer<Object> action, Runnable emptyAction)	If a value is present, performs the given action with the value, otherwise performs the given empty-based action.
default boolean	isEmpty()	Return false if there is a value present, otherwise true.
default boolean	isPresent()	Return true if there is a value present, otherwise false.
default <U> Optional<U>	map(Function<? super Object, ? extends U> mapper)	If a value is present, apply the provided mapping function to it, and if the result is non-null, return an Optional describing the result.
default Optional<Object>	or(Supplier<? extends Optional<Object>> supplier)	If the underlying Optional does not have a value, set it to the Optional produced by the supplying function.
default Object	orElse(Object other)	Return the value if present, otherwise return other.
default Object	orElseGet(Supplier<? extends Object> other)	Return the value if present, otherwise invoke other and return the result of that invocation.
default Object	orElseThrow()	If a value is present, returns the value, otherwise throws NoSuchElementException.
default <X extends Throwable> Object	orElseThrow(Supplier<? extends X> exceptionSupplier)	Return the contained value, if present, otherwise throw an exception to be created by the provided supplier.

Methods inherited from interface Value

filter, flatMap, getBoolean, getDouble, getInt, getLong, getString, stream

Modifier and Type	Method	Description
default Optional<Object>	filter(Predicate<? super Object> predicate)	If a value is present, and the value matches the given predicate, return an Optional describing the value, otherwise return an empty Optional.
default <U> Optional<U>	flatMap(Function<? super Object, Optional<? extends U>> mapper)	Apply the provided Optional-bearing mapping function to this value, return that result.
default boolean	getBoolean()	Boolean typed value.
default double	getDouble()	Double typed value.
default int	getInt()	Integer typed value.
default long	getLong()	Long typed value.
default String	getString()	String typed value.
default Stream<Object>	stream()	If a value is present, returns a sequential Stream containing only that value, otherwise returns an empty Stream.

Method Details

javaType

public Class<?> javaType()

Description copied from interface: DbColumn

Type of the column as would be returned by the underlying database driver.

Returns:

class of the type

See Also:

• DbColumn.dbType()

dbType

public String dbType()

Description copied from interface: DbColumn

Type of the column in the language of the database.

Example for SQL - if a column is declared as VARCHAR(256) in the database, this method would return VARCHAR and method DbColumn.javaType() would return String.

Returns:

column type as the database understands it

name

public String name()

Description copied from interface: DbColumn

Column name.

Returns:

name of this column