svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.impl / src / main / java / org / gvsig / expressionevaluator / impl / function / dataaccess / CurrentRowFunction.java @ 44738
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1 | 44738 | jjdelcerro | /**
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2 | * gvSIG. Desktop Geographic Information System.
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3 | *
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4 | * Copyright (C) 2007-2020 gvSIG Association.
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5 | *
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6 | * This program is free software; you can redistribute it and/or
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7 | * modify it under the terms of the GNU General Public License
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8 | * as published by the Free Software Foundation; either version 3
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9 | * of the License, or (at your option) any later version.
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10 | *
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11 | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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19 | * MA 02110-1301, USA.
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20 | *
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21 | * For any additional information, do not hesitate to contact us
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22 | * at info AT gvsig.com, or visit our website www.gvsig.com.
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23 | */
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24 | package org.gvsig.expressionevaluator.impl.function.dataaccess; |
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25 | |||
26 | import org.apache.commons.lang3.Range; |
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27 | import org.gvsig.expressionevaluator.Interpreter; |
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28 | import org.gvsig.expressionevaluator.impl.DALFunctions; |
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29 | import org.gvsig.expressionevaluator.spi.AbstractFunction; |
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30 | |||
31 | /**
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32 | *
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33 | * @author jjdelcerro
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34 | */
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35 | public class CurrentRowFunction extends AbstractFunction { |
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36 | |||
37 | public CurrentRowFunction() {
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38 | super(
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39 | DALFunctions.GROUP_DATA_ACCESS, |
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40 | DALFunctions.FUNCTION_CURRENT_ROW, |
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41 | Range.is(0),
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42 | "Return the current row when used in a table filter.\n"
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43 | + "Return null if used outer a table filter.",
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44 | DALFunctions.FUNCTION_CURRENT_ROW + "()",
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45 | null,
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46 | "Feature"
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47 | ); |
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48 | } |
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49 | |||
50 | @Override
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51 | public boolean allowConstantFolding() { |
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52 | return false; |
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53 | } |
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54 | |||
55 | @Override
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56 | public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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57 | return null; |
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58 | } |
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59 | |||
60 | } |