org.hrorm

Class ParentColumnImpl<CHILD,PARENT,CHILDBUILDER,PARENTBUILDER>

java.lang.Object

org.hrorm.ParentColumnImpl<CHILD,PARENT,CHILDBUILDER,PARENTBUILDER>

Type Parameters:

CHILD - The child entity type

PARENT - The parent entity type

CHILDBUILDER - The class used to construct new CHILD instances

PARENTBUILDER - The class used to construct new PARENT instances

All Implemented Interfaces:

Column<CHILD,CHILDBUILDER>, ParentColumn<CHILD,PARENT,CHILDBUILDER,PARENTBUILDER>

public class ParentColumnImpl<CHILD,PARENT,CHILDBUILDER,PARENTBUILDER>
extends Object
implements ParentColumn<CHILD,PARENT,CHILDBUILDER,PARENTBUILDER>

Represents a reference from a child entity to its parent where the child class has a pointer back to the parent.

Most users of hrorm will have no need to directly use this.

Constructor Summary

Constructors

Constructor and Description
ParentColumnImpl(String name, String prefix, Function<CHILD,PARENT> getter, BiConsumer<CHILDBUILDER,PARENT> setter)
ParentColumnImpl(String name, String prefix, Function<CHILD,PARENT> getter, BiConsumer<CHILDBUILDER,PARENT> setter, PrimaryKey<PARENT,PARENTBUILDER> parentPrimaryKey, boolean nullable)

Method Summary

Modifier and Type	Method and Description
String	getName() The name of the database column this instance represents.
Long	getParentId(CHILD child)
String	getPrefix() The prefix that should be used for this column when generating SQL.
boolean	isNullable() Indicator of whether or not this column is nullable or not.
void	notNull() Calling this method will enforce a not-null constraint on this column.
PopulateResult	populate(CHILDBUILDER item, ResultSet resultSet) Populates the object with the data read from the database.
void	setParentPrimaryKey(PrimaryKey<PARENT,PARENTBUILDER> parentPrimaryKey)
BiConsumer<CHILDBUILDER,PARENT>	setter()
void	setValue(CHILD item, int index, PreparedStatement preparedStatement) Sets a value onto the prepared statement based on the state of the object passed.
Set<Integer>	supportedTypes() The members of java.sql.Types that this column should support.
Column<CHILD,CHILDBUILDER>	withPrefix(String prefix, Prefixer prefixer) Make a new instance of the column, identical to this instance, except with a new prefix.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.hrorm.ParentColumn

isParentColumn

Methods inherited from interface org.hrorm.Column

isPrimaryKey

Constructor Detail

ParentColumnImpl

public ParentColumnImpl(String name,
                        String prefix,
                        Function<CHILD,PARENT> getter,
                        BiConsumer<CHILDBUILDER,PARENT> setter)

ParentColumnImpl

public ParentColumnImpl(String name,
                        String prefix,
                        Function<CHILD,PARENT> getter,
                        BiConsumer<CHILDBUILDER,PARENT> setter,
                        PrimaryKey<PARENT,PARENTBUILDER> parentPrimaryKey,
                        boolean nullable)

Method Detail

getName

public String getName()

Description copied from interface: Column

The name of the database column this instance represents.

Specified by:

getName in interface Column<CHILD,CHILDBUILDER>

Returns:

The name of the column in the underlying database.

getPrefix

public String getPrefix()

Description copied from interface: Column

The prefix that should be used for this column when generating SQL. This is necessary to prevent name clashes between columns of other tables that might be joined with this one.

Specified by:

getPrefix in interface Column<CHILD,CHILDBUILDER>

Returns:

The prefix to use when generating SQL with this column instance.

populate

public PopulateResult populate(CHILDBUILDER item,
                               ResultSet resultSet)

Description copied from interface: Column

Populates the object with the data read from the database.

Specified by:

populate in interface Column<CHILD,CHILDBUILDER>

Parameters:

item - The object being populated

resultSet - The result said being read

Returns:

A coded value indicating information about what happened during population

setValue

public void setValue(CHILD item,
                     int index,
                     PreparedStatement preparedStatement)

Description copied from interface: Column

Sets a value onto the prepared statement based on the state of the object passed.

Specified by:

setValue in interface Column<CHILD,CHILDBUILDER>

Parameters:

item - The object to read the data from.

index - Where in the prepared statement to set the read value

preparedStatement - The statement being populated

withPrefix

public Column<CHILD,CHILDBUILDER> withPrefix(String prefix,
                                             Prefixer prefixer)

Description copied from interface: Column

Make a new instance of the column, identical to this instance, except with a new prefix.

Specified by:

withPrefix in interface Column<CHILD,CHILDBUILDER>

Parameters:

prefix - The new prefix

prefixer - The source for new prefixes

Returns:

A new instance of the column with the reset prefix

notNull

public void notNull()

Description copied from interface: Column

Calling this method will enforce a not-null constraint on this column.

Specified by:

notNull in interface Column<CHILD,CHILDBUILDER>

setter

public BiConsumer<CHILDBUILDER,PARENT> setter()

Specified by:

setter in interface ParentColumn<CHILD,PARENT,CHILDBUILDER,PARENTBUILDER>

setParentPrimaryKey

public void setParentPrimaryKey(PrimaryKey<PARENT,PARENTBUILDER> parentPrimaryKey)

Specified by:

setParentPrimaryKey in interface ParentColumn<CHILD,PARENT,CHILDBUILDER,PARENTBUILDER>

supportedTypes

public Set<Integer> supportedTypes()

Description copied from interface: Column

The members of java.sql.Types that this column should support.

Specified by:

supportedTypes in interface Column<CHILD,CHILDBUILDER>

Returns:

The types that should be handled by this column type.

getParentId

public Long getParentId(CHILD child)

Specified by:

getParentId in interface ParentColumn<CHILD,PARENT,CHILDBUILDER,PARENTBUILDER>

isNullable

public boolean isNullable()

Description copied from interface: Column

Indicator of whether or not this column is nullable or not.

Specified by:

isNullable in interface Column<CHILD,CHILDBUILDER>

Returns:

true if this column is allowed to contain null values, false otherwise.