forked from D-Net/dnet-hadoop
57 lines
1.2 KiB
Java
57 lines
1.2 KiB
Java
package eu.dnetlib.pace.condition;
|
|
|
|
import java.util.List;
|
|
|
|
import com.google.common.collect.Iterables;
|
|
import eu.dnetlib.pace.distance.eval.ConditionEval;
|
|
import eu.dnetlib.pace.model.Field;
|
|
import eu.dnetlib.pace.model.FieldDef;
|
|
|
|
/**
|
|
* Returns true if the field values are different.
|
|
*
|
|
* @author claudio
|
|
*/
|
|
@ConditionClass("mustBeDifferent")
|
|
public class MustBeDifferent extends AbstractCondition {
|
|
|
|
/**
|
|
* Instantiates a new size match.
|
|
*
|
|
* @param fields the fields
|
|
*/
|
|
public MustBeDifferent(final String cond, final List<FieldDef> fields) {
|
|
super(cond, fields);
|
|
}
|
|
|
|
/*
|
|
* (non-Javadoc)
|
|
*
|
|
* @see eu.dnetlib.pace.condition.AbstractCondition#verify(eu.dnetlib.pace.model.FieldDef, java.util.List, java.util.List)
|
|
*/
|
|
@Override
|
|
protected ConditionEval verify(final FieldDef fd, final Field a, final Field b) {
|
|
|
|
final String fa = getValue(a);
|
|
final String fb = getValue(b);
|
|
|
|
return new ConditionEval(cond, a, b, fa.equals(fb) ? -1 : 1);
|
|
|
|
}
|
|
|
|
protected String getValue(final Field f) {
|
|
return getFirstValue(f);
|
|
}
|
|
|
|
/**
|
|
* Checks if is empty.
|
|
*
|
|
* @param a the a
|
|
* @return true, if is empty
|
|
*/
|
|
protected boolean isEmpty(final Iterable<?> a) {
|
|
return (a == null) || Iterables.isEmpty(a);
|
|
}
|
|
|
|
}
|