//$Id: IdentifierEqExpression.java 5685 2005-02-12 07:19:50Z steveebersole $
package org.hibernate.criterion;
import org.hibernate.Criteria;
import org.hibernate.HibernateException;
import org.hibernate.engine.TypedValue;
import org.hibernate.util.StringHelper;
/**
* An identifier constraint
* @author Gavin King
*/
public class IdentifierEqExpression implements Criterion {
private final Object value;
protected IdentifierEqExpression(Object value) {
this.value = value;
}
public String toSqlString(Criteria criteria, CriteriaQuery criteriaQuery)
throws HibernateException {
String[] columns = criteriaQuery.getIdentifierColumns(criteria);
String result = StringHelper.join(
" and ",
StringHelper.suffix( columns, " = ?" )
);
if (columns.length>1) result = '(' + result + ')';
return result;
//TODO: get SQL rendering out of this package!
}
public TypedValue[] getTypedValues(Criteria criteria, CriteriaQuery criteriaQuery)
throws HibernateException {
return new TypedValue[] { criteriaQuery.getTypedIdentifierValue(criteria, value) };
}
public String toString() {
return "id = " + value;
}
}
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