svn-gvsig-desktop / branches / v02_desarrollo / libraries / sld / temp / org.gvsig.sldsupport.lib.api / oldcode / filterencoding / operations / GreaterThanOperator.java @ 40781
History | View | Annotate | Download (3.09 KB)
1 |
/* gvSIG. Sistema de Informaci�n Geogr�fica de la Generalitat Valenciana
|
---|---|
2 |
*
|
3 |
* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
|
4 |
*
|
5 |
* This program is free software; you can redistribute it and/or
|
6 |
* modify it under the terms of the GNU General Public License
|
7 |
* as published by the Free Software Foundation; either version 2
|
8 |
* of the License, or (at your option) any later version.
|
9 |
*
|
10 |
* This program is distributed in the hope that it will be useful,
|
11 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
12 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
13 |
* GNU General Public License for more details.
|
14 |
*
|
15 |
* You should have received a copy of the GNU General Public License
|
16 |
* along with this program; if not, write to the Free Software
|
17 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
18 |
*
|
19 |
* For more information, contact:
|
20 |
*
|
21 |
* Generalitat Valenciana
|
22 |
* Conselleria d'Infraestructures i Transport
|
23 |
* Av. Blasco Ib��ez, 50
|
24 |
* 46010 VALENCIA
|
25 |
* SPAIN
|
26 |
*
|
27 |
* +34 963862235
|
28 |
* gvsig@gva.es
|
29 |
* www.gvsig.gva.es
|
30 |
*
|
31 |
* or
|
32 |
*
|
33 |
* IVER T.I. S.A
|
34 |
* Salamanca 50
|
35 |
* 46005 Valencia
|
36 |
* Spain
|
37 |
*
|
38 |
* +34 963163400
|
39 |
* dac@iver.es
|
40 |
*/
|
41 |
package org.gvsig.sldsupport.filterencoding.operations; |
42 |
|
43 |
import java.util.ArrayList; |
44 |
import java.util.Hashtable; |
45 |
|
46 |
import org.gvsig.i18n.Messages; |
47 |
|
48 |
|
49 |
/**
|
50 |
* Implements the funcionality of a ( > ) operator
|
51 |
*
|
52 |
* @author Pepe Vidal Salvador - jose.vidal.salvador@iver.es
|
53 |
*
|
54 |
*/
|
55 |
|
56 |
public class GreaterThanOperator extends Operator { |
57 |
|
58 |
private ArrayList<Expression> arguments = new ArrayList<Expression>(); |
59 |
|
60 |
public String getName() { |
61 |
return OperationTags.GREATER_THAN_OP;
|
62 |
} |
63 |
|
64 |
public GreaterThanOperator(Hashtable<String, Object> symbol_table) { |
65 |
super(symbol_table);
|
66 |
} |
67 |
|
68 |
public Object evaluate()throws ExpressionException { |
69 |
Object eval1=((Expression)arguments.get(0)).evaluate(); |
70 |
Object eval2=((Expression)arguments.get(1)).evaluate(); |
71 |
if (eval1==null || eval2==null){ |
72 |
return false; |
73 |
} |
74 |
Double left = new Double(eval1.toString()); |
75 |
Double right = new Double(eval2.toString()); |
76 |
|
77 |
if (left > right)
|
78 |
return true; |
79 |
else
|
80 |
return false; |
81 |
} |
82 |
|
83 |
public void addArgument(int i, Expression arg) { |
84 |
arguments.add(i, arg); |
85 |
} |
86 |
|
87 |
public String getPattern() { |
88 |
return "("+Messages.getText(OperationTags.OPERAND) |
89 |
+ OperationTags.GREATER_THAN_OP +Messages.getText(OperationTags.OPERAND)+ ")\n"+
|
90 |
Messages.getText(OperationTags.OPERAND) +" = "+
|
91 |
Messages.getText(OperationTags.NUMERIC_VALUE); |
92 |
} |
93 |
|
94 |
public ArrayList<Expression> getArguments() { |
95 |
return arguments;
|
96 |
} |
97 |
|
98 |
public void setArguments(ArrayList<Expression> arguments) { |
99 |
this.arguments = arguments;
|
100 |
} |
101 |
|
102 |
public void check() throws ExpressionException { |
103 |
|
104 |
if (arguments.size() > 2) |
105 |
throw new ExpressionException(ExpressionException.INCORRECT_NUMBER_OF_ARGUMENTS); |
106 |
|
107 |
for (int i = 0; i < arguments.size(); i++) { |
108 |
if(!(arguments.get(i).evaluate()instanceof Double)) |
109 |
throw new ExpressionException(ExpressionException.CLASS_CASTING_EXCEPTION); |
110 |
} |
111 |
|
112 |
} |
113 |
|
114 |
} |