Revision 1577
Added by Jing Tao over 21 years ago
| src/edu/ucsb/nceas/metacat/RelationHandler.java | ||
|---|---|---|
| 20 | 20 |
|
| 21 | 21 |
package edu.ucsb.nceas.metacat; |
| 22 | 22 |
|
| 23 |
import edu.ucsb.nceas.morpho.datapackage.Triple; |
|
| 24 |
import edu.ucsb.nceas.morpho.datapackage.TripleCollection; |
|
| 25 |
|
|
| 26 |
import java.io.StringReader; |
|
| 23 | 27 |
import java.sql.*; |
| 24 | 28 |
import java.util.*; |
| 25 | 29 |
import java.net.*; |
| 26 | 30 |
|
| 31 |
|
|
| 27 | 32 |
public class RelationHandler //implements Runnable |
| 28 | 33 |
{
|
| 29 | 34 |
private Thread btThread = null; |
| ... | ... | |
| 47 | 52 |
public RelationHandler(String docid, DBConnection conn) |
| 48 | 53 |
throws McdbException, SQLException, AccessionNumberException |
| 49 | 54 |
{
|
| 55 |
System.out.println("docid is: "+docid);
|
|
| 50 | 56 |
this.connection = conn; |
| 51 | 57 |
this.docid = docid; |
| 52 |
putRelations(); |
|
| 58 |
//putRelations(); |
|
| 59 |
createRelations(); |
|
| 53 | 60 |
} |
| 54 | 61 |
|
| 55 |
/** |
|
| 62 |
/**
|
|
| 56 | 63 |
* insert the relations specified in the triples into xml_relation table |
| 57 | 64 |
*/ |
| 58 |
private void putRelations()
|
|
| 65 |
private void createRelations()
|
|
| 59 | 66 |
throws McdbException, SQLException, AccessionNumberException |
| 60 | 67 |
{
|
| 61 | 68 |
String packagetype = null; |
| ... | ... | |
| 65 | 72 |
String relationship = null; |
| 66 | 73 |
String relationshipParentId = null; |
| 67 | 74 |
String object = null; |
| 68 |
String objectParentId = null; |
|
| 69 | 75 |
String objDoctype = null; |
| 70 |
PreparedStatement pstmt = null; // to get the relations from xml_nodes |
|
| 71 | 76 |
PreparedStatement tstmt = null; // to insert each relation into xml_relation |
| 72 | 77 |
|
| 73 | 78 |
MetaCatUtil.debugMessage("Running relation handler!", 40);
|
| ... | ... | |
| 80 | 85 |
* put r into xml_relation |
| 81 | 86 |
*/ |
| 82 | 87 |
|
| 83 |
//DocumentImpl xmldoc = new DocumentImpl(conn,docid,false);
|
|
| 88 |
DocumentImpl xmldoc = new DocumentImpl(docid,true);
|
|
| 84 | 89 |
packagetype = (new DocumentImpl(docid,false)).getDoctype(); |
| 85 |
|
|
| 86 | 90 |
// first delete the relations for this package document if any |
| 87 | 91 |
deleteRelations(docid); |
| 88 |
|
|
| 89 |
// to put the new relations get them out of xml_nodes |
|
| 90 |
pstmt = connection.prepareStatement |
|
| 91 |
(QuerySpecification.printPackageSQL(docid)); |
|
| 92 |
|
|
| 93 |
//increase usage cont |
|
| 94 |
connection.increaseUsageCount(1); |
|
| 95 |
pstmt.execute(); |
|
| 96 |
ResultSet rs = pstmt.getResultSet(); |
|
| 97 |
boolean hasmorerows = rs.next(); |
|
| 98 |
|
|
| 99 |
while(hasmorerows) {
|
|
| 100 |
Vector parentId = new Vector(); |
|
| 101 |
Vector sbjReObj = new Vector(); |
|
| 102 |
boolean mergeSubject = false; |
|
| 103 |
boolean mergeRelation = false; |
|
| 104 |
boolean mergerObject = false; |
|
| 105 |
subject = rs.getString(1); |
|
| 106 |
subjectParentId = rs.getString(2); |
|
| 107 |
relationship = rs.getString(3); |
|
| 108 |
relationshipParentId = rs.getString(4); |
|
| 109 |
object = rs.getString(5); |
|
| 110 |
objectParentId = rs.getString(6); |
|
| 92 |
|
|
| 93 |
|
|
| 94 |
//transfer to documentImpl object to string |
|
| 95 |
String xml = xmldoc.toString(); |
|
| 96 |
|
|
| 97 |
//create a tripcollection object |
|
| 98 |
TripleCollection tripleForPackage = new |
|
| 99 |
TripleCollection(new StringReader(xml)); |
|
| 100 |
//get the vetor of triples |
|
| 101 |
Vector tripleList=tripleForPackage.getCollection(); |
|
| 102 |
|
|
| 103 |
if (tripleList != null && tripleList.size()>0) |
|
| 104 |
{
|
|
| 111 | 105 |
|
| 112 |
|
|
| 113 |
MetaCatUtil.debugMessage("oringal subjectparentid: " +
|
|
| 114 |
subjectParentId, 40); |
|
| 115 |
MetaCatUtil.debugMessage("oringinal subject: "+subject, 40);
|
|
| 116 |
MetaCatUtil.debugMessage("oringal relation parentid: "+
|
|
| 117 |
relationshipParentId, 40); |
|
| 118 |
MetaCatUtil.debugMessage("oringinal relationship: "+relationship, 40);
|
|
| 119 |
MetaCatUtil.debugMessage("oringal objectparentid: "+
|
|
| 120 |
objectParentId, 40); |
|
| 121 |
MetaCatUtil.debugMessage("oringinal object: "+object, 40);
|
|
| 122 |
|
|
| 123 |
if ( hasSameId(subjectParentId) ) |
|
| 124 |
{
|
|
| 125 |
// subject was splited and need to conbined |
|
| 126 |
String prefixSubject = getValueFromParentIdList(subjectParentId); |
|
| 127 |
if (prefixSubject !=null && !prefixSubject.equals(subject)) |
|
| 128 |
{
|
|
| 129 |
MetaCatUtil.debugMessage("merger subject: "+prefixSubject +
|
|
| 130 |
subject, 40); |
|
| 131 |
subject = prefixSubject + subject; |
|
| 132 |
mergeSubject = true; |
|
| 133 |
} |
|
| 134 |
} |
|
| 135 |
|
|
| 136 |
if ( hasSameId(relationshipParentId) ) |
|
| 137 |
{
|
|
| 138 |
// relationship need to be combined |
|
| 139 |
String relationPrefix = getValueFromParentIdList(relationshipParentId); |
|
| 140 |
if (relationPrefix != null && !relationPrefix.equals(relationship)) |
|
| 141 |
{
|
|
| 142 |
MetaCatUtil.debugMessage("merge relation: "+ relationPrefix +
|
|
| 143 |
relationship, 40); |
|
| 144 |
relationship = relationPrefix + relationship; |
|
| 145 |
mergeRelation = true; |
|
| 146 |
} |
|
| 147 |
} |
|
| 148 |
|
|
| 149 |
if ( hasSameId(objectParentId) ) |
|
| 150 |
{
|
|
| 151 |
String objectPrefix = getValueFromParentIdList(objectParentId); |
|
| 152 |
if (objectPrefix != null && !objectPrefix.equals(object)) |
|
| 153 |
{
|
|
| 154 |
MetaCatUtil.debugMessage("merge object: "+ objectPrefix + object, 40);
|
|
| 155 |
object = objectPrefix + object; |
|
| 156 |
mergerObject = true; |
|
| 157 |
} |
|
| 158 |
} |
|
| 159 |
|
|
| 160 |
if (mergeSubject) |
|
| 161 |
{
|
|
| 162 |
removeEntryFromParentIdList(subjectParentId); |
|
| 163 |
} |
|
| 164 |
if (mergeRelation) |
|
| 165 |
{
|
|
| 166 |
removeEntryFromParentIdList(relationshipParentId); |
|
| 167 |
} |
|
| 168 |
if (mergerObject) |
|
| 169 |
{
|
|
| 170 |
removeEntryFromParentIdList(objectParentId); |
|
| 171 |
} |
|
| 172 |
// Store the parentids into parentId vector |
|
| 173 |
parentId.addElement(subjectParentId); |
|
| 174 |
parentId.addElement(relationshipParentId); |
|
| 175 |
parentId.addElement(objectParentId); |
|
| 176 |
// Store the value into sbjRelObj vector |
|
| 177 |
sbjReObj.addElement(subject); |
|
| 178 |
sbjReObj.addElement(relationship); |
|
| 179 |
sbjReObj.addElement(object); |
|
| 180 |
// Store the parent id and value into hashtable |
|
| 181 |
parentNodeIdList.put(parentId, sbjReObj); |
|
| 182 |
hasmorerows = rs.next(); |
|
| 183 |
} |
|
| 184 |
Enumeration en = parentNodeIdList.elements(); |
|
| 185 |
if (en.hasMoreElements()) {
|
|
| 186 |
tstmt = connection.prepareStatement("INSERT INTO xml_relation (" +
|
|
| 106 |
tstmt = connection.prepareStatement("INSERT INTO xml_relation (" +
|
|
| 187 | 107 |
"docid,packagetype,subject,subdoctype," + |
| 188 | 108 |
"relationship, object, objdoctype) " + |
| 189 | 109 |
"VALUES (?, ?, ?, ?, ?, ?, ?)"); |
| 190 | 110 |
//increase usage count |
| 191 | 111 |
connection.increaseUsageCount(1); |
| 192 | 112 |
} |
| 193 |
|
|
| 194 |
while (en.hasMoreElements())
|
|
| 113 |
// go through tripe list |
|
| 114 |
for (int i= 0; i<tripleList.size(); i++)
|
|
| 195 | 115 |
{
|
| 196 |
Vector values = (Vector)en.nextElement(); |
|
| 197 |
// cut out the revision number for subject and object |
|
| 198 |
subject = (new DocumentIdentifier((String)values.elementAt(SUBJECTINDEX))) |
|
| 199 |
.getIdentifier(); |
|
| 200 |
relationship = (String)values.elementAt(RELATIONINDEX); |
|
| 201 |
object = (new DocumentIdentifier((String)values.elementAt(OBJECTINDEX))) |
|
| 202 |
.getIdentifier(); |
|
| 116 |
// Get the triple |
|
| 117 |
Triple triple = (Triple)tripleList.elementAt(i); |
|
| 118 |
subject = (new DocumentIdentifier(triple.getSubject())).getIdentifier(); |
|
| 119 |
relationship = triple.getRelationship(); |
|
| 120 |
object = (new DocumentIdentifier(triple.getObject())).getIdentifier(); |
|
| 203 | 121 |
|
| 204 |
//subDoctype and objDoctype are N/A |
|
| 205 |
subDoctype = null; |
|
| 206 |
objDoctype = null; |
|
| 207 | 122 |
//put the new relation into xml_relation |
| 208 | 123 |
MetaCatUtil.debugMessage("Insert into xml_relation table", 30);
|
| 209 | 124 |
tstmt.setString(1, docid); |
| ... | ... | |
| 219 | 134 |
relationship, 30); |
| 220 | 135 |
tstmt.setString(6, object); |
| 221 | 136 |
tstmt.setString(7, objDoctype); |
| 222 |
tstmt.execute(); |
|
| 223 |
} |
|
| 224 |
if ( tstmt != null ) {
|
|
| 137 |
tstmt.execute(); |
|
| 138 |
|
|
| 139 |
}//for |
|
| 140 |
|
|
| 141 |
if ( tstmt != null ) |
|
| 142 |
{
|
|
| 225 | 143 |
tstmt.close(); |
| 226 | 144 |
} |
| 227 |
pstmt.close(); |
|
| 228 |
connection.commit(); |
|
| 145 |
|
|
| 146 |
|
|
| 229 | 147 |
} |
| 230 | 148 |
|
| 149 |
|
|
| 150 |
|
|
| 151 |
|
|
| 231 | 152 |
/* |
| 232 | 153 |
* A method to check if a parentid is already in the paretnIdlist |
| 233 | 154 |
*/ |
Also available in: Unified diff
Using triple rather than query to get relation.