com.db4o.QEStringCmp Maven / Gradle / Ivy
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/* Copyright (C) 2004 - 2005 db4objects Inc. http://www.db4o.com
This file is part of the db4o open source object database.
db4o is free software; you can redistribute it and/or modify it under
the terms of version 2 of the GNU General Public License as published
by the Free Software Foundation and as clarified by db4objects' GPL
interpretation policy, available at
http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
Suite 350, San Mateo, CA 94403, USA.
db4o is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
package com.db4o;
/**
*/
public abstract class QEStringCmp extends QEAbstract {
private boolean caseSensitive;
public QEStringCmp(boolean caseSensitive) {
this.caseSensitive = caseSensitive;
}
boolean evaluate(QConObject a_constraint, QCandidate a_candidate, Object a_value){
if(a_value != null){
if(a_value instanceof YapReader) {
a_value = ((YapReader)a_value).toString(a_constraint.i_trans);
}
String candidate=a_value.toString();
String constraint=a_constraint.i_object.toString();
if(!caseSensitive) {
candidate=candidate.toLowerCase();
constraint=constraint.toLowerCase();
}
return compareStrings(candidate,constraint);
}
return a_constraint.i_object.equals(null);
}
public boolean supportsIndex(){
return false;
}
protected abstract boolean compareStrings(String candidate,String constraint);
}