Package overit.geocall.sql.code.criterion

Class OperationAssignNull

java.lang.Object

overit.geocall.sql.code.criterion.Criterion

overit.geocall.sql.code.criterion.OperationAssignNull

All Implemented Interfaces:

Cloneable

public class OperationAssignNull
extends Criterion

The class extends Criterion and aims to represent the equal-null operator used in the clauses definition.
This Operation could be used like this way "NAMEFIELD = NULL".

Field Summary

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
OperationAssignNull()

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.

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

fieldDepiction

Methods inherited from class java.lang.Object

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

Constructor Details

OperationAssignNull

public OperationAssignNull()

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