org.mmbase.storage.search
Interface FieldCompareConstraint

All Superinterfaces:

Constraint, FieldConstraint

All Known Subinterfaces:

CompareFieldsConstraint, FieldValueConstraint

All Known Implementing Classes:

BasicCompareFieldsConstraint, BasicFieldCompareConstraint, BasicFieldValueConstraint

public interface FieldCompareConstraint

extends FieldConstraint

A constraint that compares a stepfield value with another value.

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

Since:

MMBase-1.7

Version:

$Id: FieldCompareConstraint.java,v 1.3 2003/03/10 11:50:45 pierre Exp $

Author:

Rob van Maris

Field Summary

static int	EQUAL
static int	GREATER
static int	GREATER_EQUAL
static int	LESS
static int	LESS_EQUAL
static int	LIKE
static int	NOT_EQUAL

Method Summary

int	getOperator() Gets the operator used to compare values.

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

getField, isCaseSensitive

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

equals, getBasicSupportLevel, hashCode, isInverse

Field Detail

LESS

public static final int LESS

See Also:

Constant Field Values

LESS_EQUAL

public static final int LESS_EQUAL

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Constant Field Values

EQUAL

public static final int EQUAL

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Constant Field Values

NOT_EQUAL

public static final int NOT_EQUAL

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Constant Field Values

GREATER

public static final int GREATER

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Constant Field Values

GREATER_EQUAL

public static final int GREATER_EQUAL

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Constant Field Values

LIKE

public static final int LIKE

See Also:

Constant Field Values

Method Detail

getOperator

public int getOperator()

Gets the operator used to compare values. This must be one of the values declared here. The value LIKE is allowed only when the associated field is of string type.