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trunk/extensions/extSymbology/src/org/gvsig/symbology/fmap/rendering/filter/operations/FieldExpressionOperator.java | ||
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana |
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* |
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* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA. |
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* |
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* For more information, contact: |
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* |
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* Generalitat Valenciana |
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* Conselleria d'Infraestructures i Transport |
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* Av. Blasco Ib??ez, 50 |
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* 46010 VALENCIA |
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* SPAIN |
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* |
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* +34 963862235 |
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* gvsig@gva.es |
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* www.gvsig.gva.es |
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* |
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* or |
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* |
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* IVER T.I. S.A |
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* Salamanca 50 |
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* 46005 Valencia |
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* Spain |
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* |
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* +34 963163400 |
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* dac@iver.es |
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*/ |
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package org.gvsig.symbology.fmap.rendering.filter.operations; |
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import java.util.ArrayList; |
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import java.util.Hashtable; |
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import com.hardcode.gdbms.engine.values.Value; |
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public class FieldExpressionOperator implements Expression { |
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private ArrayList<Expression> arguments = new ArrayList<Expression>(); |
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public void addArgument(int i, Expression arg) { |
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arguments.add(i, arg); |
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} |
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public void check(Hashtable<String, Value> symbol_table) |
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throws ExpressionException { |
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} |
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public Object evaluate(Hashtable<String, Value> symbol_table) |
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throws ExpressionException { |
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String result = ""; |
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if(arguments != null) { |
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for (int i = arguments.size()-1; i >= 0; i--) { |
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Expression function = (Expression)arguments.get(i); |
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result += ((String) (function.evaluate(symbol_table).toString())); |
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} |
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return result; |
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} |
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return null; |
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} |
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public ArrayList<Expression> getArguments() { |
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return arguments; |
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} |
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public String getName() { |
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return null; |
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} |
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public String getPattern() { |
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throw new Error ("Not yet implemented"); |
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} |
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public void setArguments(ArrayList<Expression> arguments) { |
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this.arguments = arguments; |
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} |
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} |
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