Package overit.geocall.sql.code.criterion

Class OperationIsNull

java.lang.Object

overit.geocall.sql.code.criterion.Criterion

overit.geocall.sql.code.criterion.OperationIsNull

All Implemented Interfaces:

Cloneable

public class OperationIsNull
extends Criterion

The class extends Criterion and aims to represent the IS-NULL (or IS NOT NULL) operator used in the clauses definition.
This Operation could be used like this way "NAMEFIELD IS NOT NULL" or "NAMEFIELD IS NULL".

Field Summary

Fields

Modifier and Type	Field	Description
protected final boolean	_not

Fields inherited from class overit.geocall.sql.code.criterion.Criterion

ASSIGN_NULL, DIFFERENT, DISCARD, DISCARD_CONTROLS, DISCARD_NULLS, DISCARD_USELESS_COLLECTION, DISCARD_USELESS_LIKE, DISCARD_USELESS_SET, DISCARD_USELESS_STRING, EMPTY_SET, EQUAL, GREATER, GREATEREQUAL, IN, IS, ISNOT, ISNOTNULL, ISNULL, LESS, LESSEQUAL, LIKE, NOT_EQUAL, NOTIN, NULL_SET, REQUIRE_IS_DIFFERENT, REQUIRE_IS_EQUAL_TO, REQUIRE_IS_GREATER_THAN, REQUIRE_IS_GREATER_THAN_OR_EQUAL_TO, REQUIRE_IS_IN, REQUIRE_IS_LESS_THAN, REQUIRE_IS_LESS_THAN_OR_EQUAL_TO, REQUIRE_IS_LIKE, REQUIRE_IS_NOT_IN, REQUIRE_IS_NOT_NULL, REQUIRE_IS_NULL, RESET_EMPTY_SET, TAKE_EMPTY_COLLECTION, TAKE_EMPTY_SET, TAKE_IN, TAKE_IS_NULL, TAKE_LIKE, USELESS_COLLECTION, USELESS_LIKE, USELESS_SET, USELESS_STRING

Constructor Summary

Constructors

Constructor	Description
OperationIsNull()	Creates a new OperationIsNull
OperationIsNull(boolean not)	Creates a new OperationIsNull

Method Summary

Modifier and Type	Method	Description
Parts	define(String name, Object value)	defines the Parts of the operation with all the information to become a fragment.
boolean	equals(Object o)
int	hashCode()

Methods inherited from class overit.geocall.sql.code.criterion.Criterion

fieldDepiction

Methods inherited from class java.lang.Object

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

Field Details

_not

protected final boolean _not

Constructor Details

OperationIsNull

public OperationIsNull()

Creates a new OperationIsNull

OperationIsNull

public OperationIsNull(boolean not)

Creates a new OperationIsNull

Parameters:

not - Boolean value indicating the operator IN or NOT IN depending on the value

Method Details

define

public Parts define(String name,
 Object value)

Description copied from class: Criterion

defines the Parts of the operation with all the information to become a fragment.

Specified by:

define in class Criterion

Parameters:

name - the nome of the context field

value - the current value of the context field

Returns:

return null if the Criterion don't find an information, a Parts otherwise. Then Parts con also contain empty strings if the decision is to discard the name and the value

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object