org.generationcp.core.ontology
Interface Operator

public interface Operator

Predefined constants for various operators, used in SearchFilter search filters.

The format of the operator unique identifiers is similar to the LSID syntax (except for the missing prefix URN:LSID:):

org.generationcp.demeter:operators:operator-name

The table below shows how the operators are used:

Operator	Description	Valid Attribute Type(s)	Valid Value Type(s)
EQUAL	operator for equality, the default operator	String, Integer	String, Integer
LIKE	operator similar to the SQL's LIKE operator. It can contain some wild-characters.	String	String
GT	operator for "greater-than"	Integer	Integer
GT_EQUAL	operator for "greater-than-or-equal-to"	Integer	Integer
LT	operator for "lower-than"	Integer	Integer
LT_EQUAL	operator for "lower-than-or-equal-to"	Integer	Integer

Version:

$Id: Operator.html 19678 2010-07-23 23:41:44Z jbmorales $

Author:

Martin Senger

Field Summary

static java.lang.String	CONSTRAINT An operator for "constraint".
static java.lang.String	EQUAL An operator for equality.
static java.lang.String	EQUAL_IN An operator for "equal_in".
static java.lang.String	GT An operator for "greater-than".
static java.lang.String	GT_EQUAL An operator for "greater-than-or-equal-to".
static java.lang.String	ID An ontology term defining a unique identifier for an operator for "id".
static java.lang.String	IN An operator for "in".
static java.lang.String	LIKE An operator similar to the SQL's LIKE operator.
static java.lang.String	LIKE_IN An operator for "like_in".
static java.lang.String	LT An operator for "lower-than".
static java.lang.String	LT_EQUAL An operator for "lower-than-or-equal-to".
static java.lang.String	NAMESPACE A string representing the namespace part of the LSIDs used for the ontology terms defined by this interface.
static java.lang.String	NOT_EQUAL An operator for not equality.
static java.lang.String	PREFIX A string prefixed to all ontology terms defined by this interface.
static java.lang.String	SUBSTR An operator expressing "contains" (or: a value is a substring of the attribute being search against).
static java.lang.String	UID An operator for "uid".
static java.lang.String	UID_IN Deprecated. As of 2.7.0, replaced by EQUAL_IN.

Field Detail

NAMESPACE

static final java.lang.String NAMESPACE

A string representing the namespace part of the LSIDs used for the ontology terms defined by this interface.

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Constant Field Values

PREFIX

static final java.lang.String PREFIX

A string prefixed to all ontology terms defined by this interface.

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Constant Field Values

EQUAL

static final java.lang.String EQUAL

An operator for equality. This is a default operator.

See Also:

Constant Field Values

NOT_EQUAL

static final java.lang.String NOT_EQUAL

An operator for not equality. Added by Guy Davenport.

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Constant Field Values

GT

static final java.lang.String GT

An operator for "greater-than".

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Constant Field Values

GT_EQUAL

static final java.lang.String GT_EQUAL

An operator for "greater-than-or-equal-to". Added by Guy Davenport.

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Constant Field Values

LT

static final java.lang.String LT

An operator for "lower-than".

See Also:

Constant Field Values

LT_EQUAL

static final java.lang.String LT_EQUAL

An operator for "lower-than-or-equal-to". Added by Guy Davenport.

See Also:

Constant Field Values

SUBSTR

static final java.lang.String SUBSTR

An operator expressing "contains" (or: a value is a substring of the attribute being search against).

See Also:

Constant Field Values

LIKE

static final java.lang.String LIKE

An operator similar to the SQL's LIKE operator. It can contain some wild-characters.

See Also:

Constant Field Values

UID

static final java.lang.String UID

An operator for "uid". For the given data type and attribute using this operator the DataSource.find() method will return a SimpleIdentifier object that have a given unique identifier(s). Added by Guy Davenport.

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Constant Field Values

ID

static final java.lang.String ID

An ontology term defining a unique identifier for an operator for "id". For the given data type and attribute using this operator the DataSource.find() method will return a SimpleIdentifier object that have a given object identifier(s) within the namespace defined by the dataTypeIdentifier parameter in the DataSource.find() method . Added by Guy Davenport.

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Constant Field Values

IN

static final java.lang.String IN

An operator for "in". For the given data type and attribute using this operator the DataSource.find() method will return objects that have the given objects in the collection, map or array defined by the attributeNames parameter. Added by Guy Davenport.

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Constant Field Values

UID_IN

static final java.lang.String UID_IN

Deprecated. As of 2.7.0, replaced by EQUAL_IN.

An operator for "uid_in". For the given data type and attribute using this operator the DataSource.find() method will return objects that have the given unique identifiers in the collection, map or array defined by the attributeNames parameter. Added by Guy Davenport.

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Constant Field Values

EQUAL_IN

static final java.lang.String EQUAL_IN

An operator for "equal_in". For the given data type and attribute using this operator the DataSource.find() method will return objects that are equal to at least one item in a collection, map or array.

This should be used as a replacement of the UID_IN operator.

Added by Martin Senger.

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Constant Field Values

LIKE_IN

static final java.lang.String LIKE_IN

An operator for "like_in". For the given data type and attribute using this operator the DataSource.find() method will return objects that are "like" at least one item in a collection, map or array. The "like" is the same as defined by the LIKE operator - but here it applies to any of the items.

Added by Martin Senger.

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Constant Field Values

CONSTRAINT

static final java.lang.String CONSTRAINT

An operator for "constraint". For the given data type and attribute using this operator the DataSource.find() method will return objects obey the constraint(s) provided by the values parameter in the search SearchFilter. These values must implement the one of the sub-interfaces of domain model Constraint object Added by Guy Davenport.

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Constant Field Values