Package org.fastnate.generator.statements

Class PrimitiveColumnExpression<T>

java.lang.Object

org.fastnate.generator.statements.PrimitiveColumnExpression<T>

Type Parameters:

T - the type of the primitive value

All Implemented Interfaces:

ColumnExpression

public class PrimitiveColumnExpression<T>
extends Object
implements ColumnExpression

A ColumnExpression which contains a primitive value.

Author:

Tobias Liefke

Field Summary

Fields

Modifier and Type	Field	Description
private final Function<T,String>	converter	Converts the primitive value to an SQL string.
private final T	databaseValue	The primitive database value (which may be used in an prepared statement).
static final PrimitiveColumnExpression<Object>	NULL	Represents an expression of a null value.
private final T	value	The original primitive value.

Constructor Summary

Constructors

Constructor	Description
PrimitiveColumnExpression(T value, Function<T,String> converter)	Creates a new instance of an expression where the original value is the database value.
PrimitiveColumnExpression(T value, T databaseValue, Function<T,String> converter)	Creates a new PrimitiveColumnExpression instance.

Method Summary

Modifier and Type	Method	Description
static final PrimitiveColumnExpression<String>	create(String value, GeneratorDialect dialect)	Creates a new instance of a PrimitiveColumnExpression for a string.
static final <N extends Number> PrimitiveColumnExpression<N>	create(N value, GeneratorDialect dialect)	Creates a new instance of PrimitiveColumnExpression for a number.
Function<T,String>	getConverter()	Converts the primitive value to an SQL string.
T	getDatabaseValue()	The primitive database value (which may be used in an prepared statement).
T	getValue()	The original primitive value.
String	toSql()	Generates the SQL for this expression.
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.fastnate.generator.statements.ColumnExpression

appendSql

Field Details

NULL

public static final PrimitiveColumnExpression<Object> NULL

Represents an expression of a null value.

value

private final T value

The original primitive value.

databaseValue

private final T databaseValue

The primitive database value (which may be used in an prepared statement).

converter

private final Function<T,String> converter

Converts the primitive value to an SQL string.

Constructor Details

PrimitiveColumnExpression

public PrimitiveColumnExpression(T value,
 Function<T,String> converter)

Creates a new instance of an expression where the original value is the database value.

Parameters:

value - the primitive value

converter - converts the primitive value to an SQL string

PrimitiveColumnExpression

public PrimitiveColumnExpression(T value,
 T databaseValue,
 Function<T,String> converter)

Creates a new PrimitiveColumnExpression instance.

Parameters:

value - The original primitive value.

databaseValue - The primitive database value (which may be used in an prepared statement).

converter - Converts the primitive value to an SQL string.

Method Details

create

public static final <N extends Number>
PrimitiveColumnExpression<N> create(N value,
 GeneratorDialect dialect)

Creates a new instance of PrimitiveColumnExpression for a number.

Parameters:

value - the number value

dialect - the dialect of the current database

Returns:

the new expression

create

public static final PrimitiveColumnExpression<String> create(String value,
 GeneratorDialect dialect)

Creates a new instance of a PrimitiveColumnExpression for a string.

Parameters:

value - the string value

dialect - the dialect of the current database

Returns:

the new expression

toSql

public String toSql()

Description copied from interface: ColumnExpression

Generates the SQL for this expression.

Specified by:

toSql in interface ColumnExpression

Returns:

the SQL string

toString

public String toString()

Overrides:

toString in class Object

getValue

public T getValue()

The original primitive value.

getDatabaseValue

public T getDatabaseValue()

The primitive database value (which may be used in an prepared statement).

getConverter

public Function<T,String> getConverter()

Converts the primitive value to an SQL string.