/*
BEGIN LICENSE BLOCK
Copyright 2010-2011, Heiko Mueller, Sam Lindley, James Cheney and
University of Edinburgh
This file is part of Database Wiki.
Database Wiki 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.
Database Wiki 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 Database Wiki. If not, see <http://www.gnu.org/licenses/>.
END LICENSE BLOCK
*/
package org.dbwiki.web.ui.printer;
import java.util.Vector;
import org.dbwiki.data.database.DatabaseElementNode;
import org.dbwiki.data.database.DatabaseNode;
import org.dbwiki.data.database.DatabaseTextNode;
import org.dbwiki.data.provenance.ProvenanceCopy;
import org.dbwiki.data.provenance.ProvenanceImport;
import org.dbwiki.data.time.Version;
import org.dbwiki.user.User;
import org.dbwiki.web.html.HtmlLinePrinter;
import org.dbwiki.web.request.WikiDataRequest;
import org.dbwiki.web.request.parameter.RequestParameter;
import org.dbwiki.web.request.parameter.RequestParameterVersionSingle;
import org.dbwiki.web.ui.CSS;
import org.dbwiki.web.ui.layout.DatabaseLayouter;
/**
* Printer for provenance records.
* @author jcheney
*
*/
public class ObjectProvenancePrinter extends HtmlContentPrinter {
/*
* Private Variables
*/
private DatabaseLayouter _layouter;
private WikiDataRequest _request;
/*
* Constructors
*/
public ObjectProvenancePrinter(WikiDataRequest request, DatabaseLayouter layouter) {
_request = request;
_layouter = layouter;
}
/*
* Public Methods
*/
public void print(HtmlLinePrinter body) throws org.dbwiki.exception.WikiException {
body.openTABLE(CSS.CSSProvenanceListing);
body.openTR();
body.openTH(CSS.CSSProvenanceListing);
body.text("Version");
body.closeTH();
body.openTH(CSS.CSSProvenanceListing);
body.text("User");
body.closeTH();
body.openTH(CSS.CSSProvenanceListing);
body.text("Action");
body.closeTH();
body.openTH(CSS.CSSProvenanceListing);
body.text("Object");
body.closeTH();
body.closeTR();
Vector<Version> versionVec = _request.versionIndex().getNodeChanges(_request.node());
for (int iVersion = 0; iVersion < versionVec.size(); iVersion++) {
Version version = versionVec.get(iVersion);
String css = CSS.CSSProvenanceNeutral;
if(version.provenance().isDelete()) {
css = CSS.CSSProvenanceMinus;
} else if (! version.provenance().isUpdate()) {
css = CSS.CSSProvenancePlus;
}
this.printProvenanceLine(version, css, body);
}
body.closeTABLE();
}
private void printProvenanceLine(Version version, String css, HtmlLinePrinter body) throws org.dbwiki.exception.WikiException {
String targetURL = null;
String targetName = null;
try {
targetURL = _request.wri().databaseIdentifier().linkPrefix()
+ version.provenance().identifier().toURLString()
+ "?" + RequestParameter.ParameterVersion
+ "=" + version.number();
if (_request.node().identifier().equals(version.provenance().identifier())) {
targetName = "this";
} else {
DatabaseNode targetNode = _request.node().find(version.provenance().identifier());
if (targetNode != null) {
RequestParameterVersionSingle versionParameter = new RequestParameterVersionSingle(version.number());
DatabaseNode node = targetNode;
while (!node.identifier().equals(_request.node().identifier())) {
if (node.isElement()) {
DatabaseElementNode element = (DatabaseElementNode)node;
String elementName = _layouter.get(element.schema()).getShortLabel(element, versionParameter);
if (targetName != null) {
targetName = elementName + "/" + targetName;
} else {
targetName = elementName;
}
}
node = node.parent();
}
if ((targetName == null) && (targetNode.isText())) {
targetName = "\'" + ((DatabaseTextNode)targetNode).getValue() + "\'";
//targetName = "this";
}
} else {
targetName = "Target";
}
}
} catch (NullPointerException e) {
targetURL = targetName = null;
}
body.openTR();
body.openTD(css);
body.text(version.name());
body.closeTD();
body.openTD(css);
if (version.provenance().user() != null) {
body.text(version.provenance().user().fullName());
} else {
body.text(User.UnknownUserName);
}
body.closeTD();
body.openTD(css);
if (version.provenance().isCopy()) {
body.text(version.provenance().name() + " (");
body.link(((ProvenanceCopy)version.provenance()).sourceURL(), "Source", CSS.CSSLinkActive);
body.text(")");
} else if (version.provenance().isImport()) {
body.text(version.provenance().name() + " (");
body.link(((ProvenanceImport)version.provenance()).sourceURL(), "Source", CSS.CSSLinkActive);
body.text(")");
} else {
body.text(version.provenance().name());
}
body.closeTD();
body.openTD(css);
if (targetURL != null) {
body.link(targetURL, targetName, CSS.CSSLinkActive);
}
body.closeTD();
body.closeTR();
}
}