org.hibernate.transform.AliasedTupleSubsetResultTransformer.java Source code

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Here is the source code for org.hibernate.transform.AliasedTupleSubsetResultTransformer.java

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/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
 * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
 */
package org.hibernate.transform;

/**
 * An implementation of TupleSubsetResultTransformer that ignores a
 * tuple element if its corresponding alias is null.
 *
 * @author Gail Badner
 */
public abstract class AliasedTupleSubsetResultTransformer extends BasicTransformerAdapter
        implements TupleSubsetResultTransformer {

    @Override
    public boolean[] includeInTransform(String[] aliases, int tupleLength) {
        if (aliases == null) {
            throw new IllegalArgumentException("aliases cannot be null");
        }
        if (aliases.length != tupleLength) {
            throw new IllegalArgumentException("aliases and tupleLength must have the same length; "
                    + "aliases.length=" + aliases.length + "tupleLength=" + tupleLength);
        }
        boolean[] includeInTransform = new boolean[tupleLength];
        for (int i = 0; i < aliases.length; i++) {
            if (aliases[i] != null) {
                includeInTransform[i] = true;
            }
        }
        return includeInTransform;
    }
}