org.mmbase.storage.search
Interface FieldValueConstraint

All Superinterfaces:

Constraint, FieldCompareConstraint, FieldConstraint

All Known Subinterfaces:

FieldValueDateConstraint

All Known Implementing Classes:

BasicFieldValueConstraint, BasicFieldValueDateConstraint, BasicFunctionValueConstraint

public interface FieldValueConstraint
extends FieldCompareConstraint

A constraint that compares a stepfield value with a fixed value.

This corresponds with comparison operators <, =, > and LIKE in SQL SELECT-syntax.

Since:

MMBase-1.7

Version:

$Id: FieldValueConstraint.java 42627 2010-06-21 09:54:05Z michiel $

Author:

Rob van Maris

Field Summary

Fields inherited from interface org.mmbase.storage.search.FieldCompareConstraint

EQUAL, GREATER, GREATER_EQUAL, LESS, LESS_EQUAL, LIKE, NOT_EQUAL, OPERATOR_DESCRIPTIONS, REGEXP

Method Summary

Object	getValue() Gets the value to compare with.
boolean	matches(Object value) Determines whether a certain given value would match this constraint.
String	toString() Returns a string representation of this FieldValueConstraint.

Methods inherited from interface org.mmbase.storage.search.FieldCompareConstraint

getOperator

Methods inherited from interface org.mmbase.storage.search.FieldConstraint

getField, isCaseSensitive

Methods inherited from interface org.mmbase.storage.search.Constraint

equals, getBasicSupportLevel, hashCode, isInverse, setUnmodifiable

Method Detail

getValue

Object getValue()

Gets the value to compare with. Depending on the field type, the value is of type String or Number.

If the associated field type is of string type, when used in combination with the operator LIKE, this may contain the following wildcard characters as well:

• % for any string
• _ for a single character

toString

String toString()

Returns a string representation of this FieldValueConstraint. The string representation has the form "FieldValueConstraint(inverse:<:inverse>, field:<field>, casesensitive:<casesensitive>, operator:<operator>, value:<value>)" where

• <inverse>is the value returned by isInverse()
• <field> is the field alias returned by FieldConstraint#getField().getAlias(), or FieldConstraint#getField().getFieldName() when the former is null.
• <casesensitive> is the value returned by isCaseSensitive()
• <operator> is the value returned by (@link FieldCompareConstraint#getOperator getOperator()}
• <value> is the value returned by getValue()

Overrides:

toString in class Object

Returns:

A string representation of this FieldValueConstraint.

matches

boolean matches(Object value)

Description copied from interface: FieldConstraint

Determines whether a certain given value would match this constraint.

Specified by:

matches in interface FieldConstraint

Since:

MMBase-1.9.4