Module litebridge.db.spi

Package org.litebridge.db.spi.expression

Class LiteralExpression

java.lang.Object

org.litebridge.db.spi.expression.LiteralExpression

All Implemented Interfaces:

SelectExpression

public class LiteralExpression
extends Object
implements SelectExpression

An encapsulated literal value in a query expression.

Constructor Summary

Constructors

Constructor	Description
LiteralExpression(@Nullable Object value)	Constructs a new LiteralExpression with the given value.

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
int	hashCode()
String	toBindValueSql(Operation operation)	Generates a SQL fragment with a placeholder for a bind value.
String	toSql(Operation operation, ClauseType clause, @Nullable DelegateExpression parent)	Creates a SQL representation of the expression, providing the immediate nesting/parent expression.
String	toString()
@Nullable Object	value()	Retrieves the value of this literal expression.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.litebridge.db.spi.expression.SelectExpression

toSql

Constructor Details

LiteralExpression

public LiteralExpression(@Nullable Object value)

Constructs a new LiteralExpression with the given value.

Parameters:

value - the literal value to be represented

Method Details

value

public @Nullable Object value()

Retrieves the value of this literal expression.

Returns:

the literal value encapsulated by this expression

toSql

public String toSql(Operation operation,
 ClauseType clause,
 @Nullable DelegateExpression parent)

Description copied from interface: SelectExpression

Creates a SQL representation of the expression, providing the immediate nesting/parent expression.

Specified by:

toSql in interface SelectExpression

Parameters:

operation - the operation that is being executed

clause - The current clause type being evaluated

parent - The parent expression/nesting expression, or null if this is a top-level expression

Returns:

the SQL representation of the expression

toBindValueSql

public String toBindValueSql(Operation operation)

Generates a SQL fragment with a placeholder for a bind value.

Parameters:

operation - the database operation context

Returns:

the SQL fragment with bind placeholders

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object