pt.webdetails.cda.utils.DataTableFilter.java Source code

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Here is the source code for pt.webdetails.cda.utils.DataTableFilter.java

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/*!
* Copyright 2002 - 2013 Webdetails, a Pentaho company.  All rights reserved.
* 
* This software was developed by Webdetails and is provided under the terms
* of the Mozilla Public License, Version 2.0, or any later version. You may not use
* this file except in compliance with the license. If you need a copy of the license,
* please go to  http://mozilla.org/MPL/2.0/. The Initial Developer is Webdetails.
*
* Software distributed under the Mozilla Public License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or  implied. Please refer to
* the license for the specific language governing your rights and limitations.
*/

package pt.webdetails.cda.utils;

import javax.swing.table.TableModel;

import org.apache.commons.lang.StringUtils;

/**
 * Provides server-side filtering akin to <a href="http://datatables.net/ref">DataTables</a>' bFilter option.<br>
 * All search terms must have a hit in one of the columns for a match  
 */
public class DataTableFilter {

    private static final String TERM_SEPARATOR = " ";

    private String[] searchTerms;
    private int[] searchableColumns;

    /**
     * 
     * @param searchText space-separated list of search terms
     * @param searchableColumns columns indexes to search on
     */
    public DataTableFilter(String searchText, int[] searchableColumns) {

        if (searchableColumns == null || searchText == null) {
            throw new IllegalArgumentException(DataTableFilter.class.getName() + " cannot have null arguments.");
        }

        this.searchableColumns = searchableColumns;
        this.searchTerms = StringUtils.split(searchText, TERM_SEPARATOR);
    }

    public boolean rowContainsSearchTerms(TableModel table, int rowIndex) {
        String[] columnValues = getRelevantColumns(table, rowIndex);

        for (String searchTerm : searchTerms) {
            boolean containsTerm = false;
            for (String value : columnValues) {
                if (StringUtils.containsIgnoreCase(value, searchTerm)) {
                    containsTerm = true;
                    continue;
                }
            }
            if (!containsTerm)
                return false;
        }

        return true;

    }

    private String[] getRelevantColumns(TableModel table, int rowIndex) {
        String[] row = new String[searchableColumns.length];
        for (int i = 0; i < row.length; i++) {
            Object rawValue = table.getValueAt(rowIndex, searchableColumns[i]);
            row[i] = (rawValue == null) ? null : rawValue.toString();
        }
        return row;
    }

}