1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
/*
* This file is part of rasdaman community.
*
* Rasdaman community is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Rasdaman community 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with rasdaman community. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
rasdaman GmbH.
*
* For more information please see <http://www.rasdaman.org>
* or contact Peter Baumann via <baumann@rasdaman.com>.
*/
package petascope.wcps.server.core;
import petascope.wcps.server.exceptions.ResourceException;
import petascope.wcps.server.exceptions.WCPSException;
import org.w3c.dom.*;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
public class CoverageIterator implements IRasNode {
private List<String> coverageNames;
private String iteratorName;
private boolean dynamic = false; // created from a Construct Coverage expr?
public CoverageIterator(Node x, XmlQuery xq) throws WCPSException {
IDynamicMetadataSource source = xq.getMetadataSource();
coverageNames = new ArrayList<String>();
if (!x.getNodeName().equals("coverageIterator")) {
throw new WCPSException("Invalid cast from " + x.getNodeName()
+ " XML node to CoverageIterator node");
}
Node it = x.getFirstChild();
while (it != null) {
if (it.getNodeName().equals("#text")) {
it = it.getNextSibling();
continue;
}
if (it.getNodeName().equals("iteratorVar")) {
iteratorName = it.getFirstChild().getNodeValue();
System.err.println("*** Iterator variable : " + iteratorName);
} else if (it.getNodeName().equals("coverageName")) {
String cn = it.getFirstChild().getNodeValue();
System.err.println("*** Coverage reference : " + cn);
try {
if (!source.coverages().contains(cn)) {
throw new WCPSException("Unknown coverage " + cn);
}
} catch (ResourceException e) {
throw new WCPSException(
"Cannot load coverage information!", e);
}
coverageNames.add(cn);
}
it = it.getNextSibling();
}
}
public CoverageIterator(String iterator, String coverage) throws WCPSException {
coverageNames = new ArrayList<String>();
iteratorName = iterator;
coverageNames.add(coverage);
this.dynamic = true;
}
public Iterator<String> getCoverages() {
return coverageNames.iterator();
}
public String getIteratorName() {
return iteratorName;
}
public String toRasQL() {
// TODO(andreia) : How to translate multiple coverages?
return coverageNames.get(0) + " AS " + iteratorName;
}
}
|
