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/**
* Conjunction
* Copyright 2014 by Michael Peter Christen
* First released 03.08.2014 at http://yacy.net
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program in the file lgpl21.txt
* If not, see <http://www.gnu.org/licenses/>.
*/
package net.yacy.cora.federate.solr.logic;
import org.apache.solr.common.SolrDocument;
/**
* A Conjunction is a conjunction of terms to Solr. The purpose of this class is,
* to provide a mechanism to reduce the calls to Solr when calling Solr several times with sets of
* terms which are all conjunctive.
*/
public class Conjunction extends AbstractOperations implements Operations {
public Conjunction() {
super("AND");
}
public Conjunction(final Term t1, final Term t2) {
super("AND");
this.addOperand(t1);
this.addOperand(t2);
}
@Override
public Object clone() {
Conjunction c = new Conjunction();
for (Term t: this.terms) c.addOperand(t);
return c;
}
@Override
public boolean equals(Object otherTerm) {
if (!(otherTerm instanceof Conjunction)) return false;
Conjunction o = (Conjunction) otherTerm;
for (Term t: this.terms) {
if (!TermTools.isIn(t, o.getOperands())) return false;
}
return true;
}
/**
* check if this conjunction matches with a given SolrDocument
* @param doc the SolrDocument to match to
* @return true, if all literals of this conjunction match with the terms of the document
*/
@Override
public boolean matches(SolrDocument doc) {
for (Term term: this.terms) {
if (!term.matches(doc)) return false;
}
return true;
}
}
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