Package net.sf.basedb.core

Enum Operator

java.lang.Object

java.lang.Enum<Operator>

net.sf.basedb.core.Operator

All Implemented Interfaces:

Serializable, Comparable<Operator>, java.lang.constant.Constable

public enum Operator
extends Enum<Operator>

Version:

2.0

Author:

Nicklas, Martin

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
AND
BETWEEN
EQ
GT
GTEQ
IN
LIKE
LIKE_IN
LT
LTEQ
NEQ
NOT
NOTIN
NOTLIKE
NOTLIKE_IN
OR
RLIKE

Field Summary

Fields

Modifier and Type	Field	Description
private boolean	expressionOperator
private boolean	isListOperator
private boolean	isNegationOperator
private String	sqlSymbol
private String	symbol
private int	value
private static Map<Integer,Operator>	valueMapping

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Operator(int value, String symbol, String sqlSymbol, boolean expressionOperator, boolean isListOperator, boolean isNegationOperator)

Method Summary

Modifier and Type	Method	Description
static Operator	fromValue(int value)	Get the Operator object when you know the integer code.
abstract Restriction	getRestriction(Expression lvalue, Expression rvalue)
abstract Restriction	getRestriction(Expression lvalue, Expression[] rvalues)
String	getSqlSymbol()	Get the SQL symbol for this operator.
String	getSymbol()	Get the symbol for this operator, useful for display in client applications.
int	getValue()	Get the integer value that is used when storing an operator in the database.
boolean	isExpressionOperator()
boolean	isListOperator()	Gets if the operator should be used with a list or not.
boolean	isNegationOperator()	Negation operators typically need to handle 'null' checks a bit differently.
String	toString()
static Operator	valueOf(String name)	Returns the enum constant of this type with the specified name.
static Operator[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

AND

public static final Operator AND

OR

public static final Operator OR

NOT

public static final Operator NOT

EQ

public static final Operator EQ

NEQ

public static final Operator NEQ

LT

public static final Operator LT

LTEQ

public static final Operator LTEQ

GT

public static final Operator GT

GTEQ

public static final Operator GTEQ

LIKE

public static final Operator LIKE

NOTLIKE

public static final Operator NOTLIKE

IN

public static final Operator IN

Since:

2.6

NOTIN

public static final Operator NOTIN

Since:

2.6

LIKE_IN

public static final Operator LIKE_IN

Since:

2.6

NOTLIKE_IN

public static final Operator NOTLIKE_IN

Since:

2.6

RLIKE

public static final Operator RLIKE

Since:

2.8

BETWEEN

public static final Operator BETWEEN

Since:

3.0

Field Details

valueMapping

private static final Map<Integer,Operator> valueMapping

value

private final int value

symbol

private final String symbol

sqlSymbol

private final String sqlSymbol

expressionOperator

private final boolean expressionOperator

isListOperator

private final boolean isListOperator

isNegationOperator

private final boolean isNegationOperator

Constructor Details

Operator

private Operator(int value,
String symbol,
String sqlSymbol,
boolean expressionOperator,
boolean isListOperator,
boolean isNegationOperator)

Method Details

values

public static Operator[] values()

Returns an array containing the constants of this enum type, in the order they are declared.

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static Operator valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

toString

public String toString()

Overrides:

toString in class Enum<Operator>

getValue

public int getValue()

Get the integer value that is used when storing an operator in the database.

Returns:

an Integer

getSymbol

public String getSymbol()

Get the symbol for this operator, useful for display in client applications.

Returns:

a String object

getSqlSymbol

public String getSqlSymbol()

Get the SQL symbol for this operator. This can be used when creating SQL/HQL queries.

Returns:

A String object

isExpressionOperator

public boolean isExpressionOperator()

isNegationOperator

public boolean isNegationOperator()

Negation operators typically need to handle 'null' checks a bit differently.

Since:

3.5

getRestriction

public abstract Restriction getRestriction(Expression lvalue,
Expression rvalue)
                                    throws InvalidDataException

Throws:

InvalidDataException

getRestriction

public abstract Restriction getRestriction(Expression lvalue,
Expression[] rvalues)
                                    throws InvalidDataException

Throws:

InvalidDataException

fromValue

public static Operator fromValue(int value)

Get the Operator object when you know the integer code.

Parameters:

value - The integer code

Returns:

an Operator object.

isListOperator

public boolean isListOperator()

Gets if the operator should be used with a list or not. The list items should be separated with '|'.

Returns:

TRUE if it should, FALSE otherwise.

Since:

2,6