org.mmbase.storage.search
Interface FieldValueConstraint

All Superinterfaces:

Constraint, FieldCompareConstraint, FieldConstraint

All Known Subinterfaces:

FieldValueDateConstraint

All Known Implementing Classes:

BasicFieldValueConstraint, BasicFieldValueDateConstraint

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,v 1.4 2003/11/26 14:11:57 robmaris Exp $

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

Method Summary

Object	getValue() Gets the value to compare with.
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

Method Detail

getValue

public 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

public 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()

Returns:

A string representation of this FieldValueConstraint.