ERXBetweenQualifier Class Reference

Inherits er::extensions::qualifiers::ERXKeyValueQualifier, and com::webobjects::eocontrol::EOQualifierEvaluation.

Collaboration diagram for ERXBetweenQualifier:

[legend]

List of all members.

Classes
class	BetweenQualifierSQLGenerationSupport
Public Member Functions
void	addQualifierKeysToSet (NSMutableSet aSet)
Object	clone ()
	ERXBetweenQualifier (String aKey, Object aMinimumValue, Object aMaximumValue)
boolean	evaluateWithObject (Object anObject)
String	key ()
Object	maximumValue ()
Object	minimumValue ()
EOQualifier	qualifierWithBindings (NSDictionary someBindings, boolean requiresAll)
void	setKey (String aValue)
void	setMaximumValue (Object aValue)
void	setMinimumValue (Object aValue)
String	toString ()
void	validateKeysWithRootClassDescription (EOClassDescription aClassDescription)
Protected Member Functions
NSComparator	comparatorForObject (Object anObject)
Static Package Functions
	[static initializer]
Private Member Functions
String	valueStringForValue (Object aValue)
Private Attributes
String	_key = null
Object	_maximumValue = null
Object	_minimumValue = null
Static Private Attributes
static final String	BetweenStatement = " BETWEEN "
static final String	Separator = " AND "

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Detailed Description

The between qualifier allows qualification on an attribute that is between two values. This qualifier supports both in-memory and sql based qualification.

The SQL generated is of the form: "FOO BETWEEN 1 AND 3"

Note this qualifier supports qualifing against String, Number and NSTimestamp values.

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Constructor & Destructor Documentation

ERXBetweenQualifier	(	String	aKey,
		Object	aMinimumValue,
		Object	aMaximumValue
	)

Creates a qualifier for a given key with a min and max value specified.

Parameters:

	aKey	key to qualify against
	aMinimumValue	minimum value of the key
	aMaximumValue	maximum value of the key

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Member Function Documentation

[static initializer]

(

)

[static, package]

register SQL generation support for the qualifier

void addQualifierKeysToSet

(

NSMutableSet

aSet

)

Adds the qualification key of the qualifier to the given set.

Parameters:

aSet

to add the qualification key to.

Object clone

(

)

Implementation of the Clonable interface.

Returns:

clone of the qualifier

NSComparator comparatorForObject

(

Object

anObject

)

[protected]

Determines the comparator to use for a given object based on the object's class.

Parameters:

anObject

to find the comparator for

Returns:

comparator to use when comparing objects of a given class.

boolean evaluateWithObject

(

Object

anObject

)

Compares an object to determine if it is within the between qualification of the current qualifier. This method is only used for in-memory qualification.

Returns:

if the given object is within the boundries of the qualifier.

String key

(

)

Gets the key to qualify against.

Returns:

qualifier key

Object maximumValue

(

)

Gets the maximum value.

Returns:

maximum value.

Object minimumValue

(

)

Gets the minimum value.

Returns:

minimum value.

EOQualifier qualifierWithBindings	(	NSDictionary	someBindings,
		boolean	requiresAll
	)

Creates another qualifier after replacing the values of the bindings. Since this qualifier does not support qualifier binding keys a clone of the qualifier is returned.

Parameters:

	someBindings	some bindings
	requiresAll	tells if the qualifier requires all bindings

Returns:

clone of the current qualifier.

void setKey

(

String

aValue

)

Sets the qualification key.

Parameters:

aValue

for the qualification key.

void setMaximumValue

(

Object

aValue

)

Sets the maximum value.

Parameters:

aValue

new maximum value

void setMinimumValue

(

Object

aValue

)

Sets the minimum value.

Parameters:

aValue

new minimum value

String toString

(

)

void validateKeysWithRootClassDescription

(

EOClassDescription

aClassDescription

)

This qualifier does not perform validation. This is a no-op method.

Parameters:

aClassDescription

to validation the qualifier keys against.

String valueStringForValue

(

Object

aValue

)

[private]

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Member Data Documentation

String _key = null [private]

holds the key used to compare against

Object _maximumValue = null [private]

holds the maximum value

Object _minimumValue = null [private]

holds the minimun value

final String BetweenStatement = " BETWEEN " [static, private]

holds the between sql string

final String Separator = " AND " [static, private]

holds the and sql string

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The documentation for this class was generated from the following file:

• /opt/source/Wonder/Frameworks/Core/ERExtensions/Sources/er/extensions/eof/qualifiers/ERXBetweenQualifier.java