MatchFieldQueryFactory.java

package won.matcher.solr.query.factory;

/**
 * Created by hfriedrich on 01.08.2016.
 */
public class MatchFieldQueryFactory extends SolrQueryFactory {
    protected String fieldName;
    protected String value;

    public MatchFieldQueryFactory() {
        fieldName = null;
        value = null;
    }

    public MatchFieldQueryFactory(String fieldName, String value) {
        this.value = value;
        this.fieldName = fieldName;
    }

    @Override
    protected String makeQueryString() {

        if (fieldName == null || value == null) {
            throw new NullPointerException("fieldName or value may not be null");
        }
        // these surrounding brackets are important to really search for all terms (that the value field may contain)
        // in the specified in the field
        return String.join("", fieldName, " : (", value, ")");
    }
}