org.eobjects.analyzer.result.ValueCountingAnalyzerResult Maven / Gradle / Ivy

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/**
 * AnalyzerBeans
 * Copyright (C) 2014 Neopost - Customer Information Management
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program 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 distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.eobjects.analyzer.result;

import java.util.Collection;

/**
 * Interface for analyzer results that generally work as "value counters". Such
 * results have counted the occurrence of certain values, as well as some
 * (optional) value types like unique values, unexpected values etc.
 */
public interface ValueCountingAnalyzerResult extends AnalyzerResult {

    public String getName();

    public Collection getValueCounts();

    /**
     * Gets a {@link ValueFrequency} list similar to that of
     * {@link #getValueCounts()}, but allowing the underlying implementation to
     * reduce the list by building {@link CompositeValueFrequency} objects if
     * necesary to reach the preferred maximum number of elements.
     * 
     * @param preferredMaximum
     *            the preferred maximum number of elements. Note that this is a
     *            hint, but depending on the implementation and the data, it
     *            might not always be possible to reduce to this preferred
     *            maximum.
     * @return
     */
    public Collection getReducedValueFrequencies(int preferredMaximum);

    public int getNullCount();

    public int getTotalCount();

    public Integer getCount(String value);

    public Integer getDistinctCount();

    public Integer getUniqueCount();

    public Integer getUnexpectedValueCount();

    public boolean hasAnnotatedRows(String value);

    public AnnotatedRowsResult getAnnotatedRowsForValue(String value);

    public AnnotatedRowsResult getAnnotatedRowsForNull();

    public AnnotatedRowsResult getAnnotatedRowsForUnexpectedValues();

    public Collection getUniqueValues();

}