1
|
/**
|
2
|
* '$RCSfile$'
|
3
|
* Purpose: A Class that represents an XML element and its contents,
|
4
|
* and can build itself from a database connection
|
5
|
* Copyright: 2000 Regents of the University of California and the
|
6
|
* National Center for Ecological Analysis and Synthesis
|
7
|
* Authors: Matt Jones
|
8
|
* Release: @release@
|
9
|
*
|
10
|
* '$Author: tao $'
|
11
|
* '$Date: 2003-03-19 15:27:58 -0800 (Wed, 19 Mar 2003) $'
|
12
|
* '$Revision: 1497 $'
|
13
|
*
|
14
|
* This program is free software; you can redistribute it and/or modify
|
15
|
* it under the terms of the GNU General Public License as published by
|
16
|
* the Free Software Foundation; either version 2 of the License, or
|
17
|
* (at your option) any later version.
|
18
|
*
|
19
|
* This program is distributed in the hope that it will be useful,
|
20
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
21
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
22
|
* GNU General Public License for more details.
|
23
|
*
|
24
|
* You should have received a copy of the GNU General Public License
|
25
|
* along with this program; if not, write to the Free Software
|
26
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
27
|
*/
|
28
|
|
29
|
package edu.ucsb.nceas.metacat;
|
30
|
|
31
|
import java.sql.*;
|
32
|
import java.io.IOException;
|
33
|
import java.util.Enumeration;
|
34
|
import java.util.Iterator;
|
35
|
import java.util.TreeSet;
|
36
|
import java.util.Vector;
|
37
|
|
38
|
/**
|
39
|
* A Class that represents an XML element and its contents,
|
40
|
* and can build itself from a database connection
|
41
|
*/
|
42
|
public class ElementNode extends BasicNode {
|
43
|
|
44
|
/**
|
45
|
* Construct a new ElementNode instance, and recursively create its children
|
46
|
*
|
47
|
* @param nodeRecordList the nodedata to use to initialize, which is a
|
48
|
* TreeSet of NodeRecord objects
|
49
|
* @param nodeid the identifier for the node to be created
|
50
|
*/
|
51
|
public ElementNode (TreeSet nodeRecordList, long nodeid) {
|
52
|
|
53
|
MetaCatUtil util = new MetaCatUtil();
|
54
|
|
55
|
// Step through all of the node records we were given
|
56
|
Iterator it = nodeRecordList.iterator();
|
57
|
while (it.hasNext()) {
|
58
|
NodeRecord currentNode = (NodeRecord)it.next();
|
59
|
if (currentNode.nodeid == nodeid) {
|
60
|
util.debugMessage("Got Node ID: " + currentNode.nodeid +
|
61
|
" (" + currentNode.parentnodeid +
|
62
|
", " + currentNode.nodeindex +
|
63
|
", " + currentNode.nodetype + ")", 50);
|
64
|
// Process the current node
|
65
|
setNodeType(currentNode.nodetype);
|
66
|
setNodeID(currentNode.nodeid);
|
67
|
setParentID(currentNode.parentnodeid);
|
68
|
setTagName(currentNode.nodename);
|
69
|
} else {
|
70
|
// Process the children nodes
|
71
|
if (currentNode.parentnodeid == getNodeID()) {
|
72
|
util.debugMessage(" Processing child: " + currentNode.nodeid +
|
73
|
" (" + currentNode.parentnodeid +
|
74
|
", " + currentNode.nodeindex +
|
75
|
", " + currentNode.nodetype + ")", 50);
|
76
|
|
77
|
if ((currentNode.nodetype).equals("ELEMENT")) {
|
78
|
util.debugMessage("Creating child node: " + currentNode.nodeid, 50);
|
79
|
ElementNode child = new ElementNode(nodeRecordList,
|
80
|
currentNode.nodeid);
|
81
|
addChildNode(child);
|
82
|
} else if (currentNode.nodetype.equals("ATTRIBUTE")) {
|
83
|
setAttribute(currentNode.nodename,currentNode.nodedata);
|
84
|
} else if (currentNode.nodetype.equals("TEXT")) {
|
85
|
TextNode child = new TextNode(currentNode.nodeid,
|
86
|
currentNode.parentnodeid,
|
87
|
currentNode.nodedata);
|
88
|
addChildNode(child);
|
89
|
} else if (currentNode.nodetype.equals("COMMENT")) {
|
90
|
CommentNode child = new CommentNode(currentNode.nodeid,
|
91
|
currentNode.parentnodeid,
|
92
|
currentNode.nodedata);
|
93
|
addChildNode(child);
|
94
|
} else if (currentNode.nodetype.equals("PI")) {
|
95
|
PINode child = new PINode(currentNode.nodeid,
|
96
|
currentNode.parentnodeid,
|
97
|
currentNode.nodename,
|
98
|
currentNode.nodedata);
|
99
|
addChildNode(child);
|
100
|
}
|
101
|
|
102
|
} else {
|
103
|
util.debugMessage(" Discarding child: " + currentNode.nodeid +
|
104
|
" (" + currentNode.parentnodeid +
|
105
|
", " + currentNode.nodeindex +
|
106
|
", " + currentNode.nodetype + ")", 50);
|
107
|
}
|
108
|
}
|
109
|
}
|
110
|
}
|
111
|
|
112
|
/**
|
113
|
* String representation for display purposes (recursively descends through
|
114
|
* children to create an XML subtree)
|
115
|
*/
|
116
|
public String toString () {
|
117
|
|
118
|
StringBuffer value = new StringBuffer();
|
119
|
String nodetype = getNodeType();
|
120
|
|
121
|
if (nodetype.equals("ELEMENT")) {
|
122
|
value.append('<');
|
123
|
value.append(getTagName());
|
124
|
value.append(getAttributes().toString());
|
125
|
value.append('>');
|
126
|
}
|
127
|
|
128
|
// Process children recursively here
|
129
|
BasicNode child = null;
|
130
|
Enumeration e = getChildren();
|
131
|
while (e.hasMoreElements()) {
|
132
|
child = (BasicNode)e.nextElement();
|
133
|
value.append(child);
|
134
|
}
|
135
|
|
136
|
if (nodetype.equals("ELEMENT")) {
|
137
|
value.append("</");
|
138
|
value.append(getTagName());
|
139
|
value.append('>');
|
140
|
}
|
141
|
|
142
|
return value.toString();
|
143
|
}
|
144
|
}
|