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Java Source Code / Java Documentation » Database ORM » MMBase » org.mmbase.storage.search

Source Cross Reference Class Diagram Java Document (Java Doc)

org.mmbase.storage.search .Constraint

All known Subclasses:   org.mmbase.storage.search.implementation .BasicConstraint,
Constraint
public interface Constraint (Code)
A constaint on the search results.
This corresponds to constraints in a WHERE-clause in SQL SELECT-syntax.
author:
   Rob van Maris
version:
   $Id: Constraint.java,v 1.3 2007/12/06 08:13:36 michiel Exp $
since:
   MMBase-1.7

Method Summary
public boolean equals(Object obj)
     Compares this constraint to the specified object.
int getBasicSupportLevel()
     Tests if this constraint is supported by the basic queryhandler.
public int hashCode()

boolean isInverse()
     Tests if the condition must be inverted.

Method Detail
equals
public boolean equals(Object obj)(Code)
Compares this constraint to the specified object. The result is true if and only if the argument is a non-null Constraint object representing the same constraint(s).
Parameters:
  obj - The object to compare with. true if the objects are equal,false otherwise.

getBasicSupportLevel
int getBasicSupportLevel()(Code)
Tests if this constraint is supported by the basic queryhandler.

hashCode
public int hashCode()(Code)

isInverse
boolean isInverse()(Code)
Tests if the condition must be inverted.
This corresponds to the use of NOT in a WHERE-clause in SQL SELECT-syntax.

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